Updated snapshot to 1.3.5

* Added option to build Draco for Universal Scene Description
* Code cleanup
* Bug fixes

CMakeLists.txt

@@ -1,4 +1,13 @@
 cmake_minimum_required(VERSION 3.5 FATAL_ERROR)
+
+if (NOT CMAKE_BUILD_TYPE AND NOT IGNORE_EMPTY_BUILD_TYPE)
+  if (CMAKE_CURRENT_LIST_FILE STREQUAL CMAKE_PARENT_LIST_FILE)
+    message(INFO "|Draco: ignoring empty build type, forcing release mode.")
+    set(CMAKE_BUILD_TYPE "Release" CACHE STRING "Draco overridden build type"
+        FORCE)
+  endif ()
+endif ()
+
 project(draco C CXX)
 
 set(draco_root "${CMAKE_CURRENT_SOURCE_DIR}")
@@ -41,10 +50,11 @@ option(ENABLE_WASM "" OFF)
 option(ENABLE_WERROR "" OFF)
 option(ENABLE_WEXTRA "" OFF)
 option(IGNORE_EMPTY_BUILD_TYPE "" OFF)
-option(BUILD_UNITY_PLUGIN "Build plugin library for Unity" OFF)
+option(BUILD_UNITY_PLUGIN "Build plugin library for Unity." OFF)
 option(BUILD_ANIMATION_ENCODING "" OFF)
 option(BUILD_FOR_GLTF "" OFF)
-option(BUILD_MAYA_PLUGIN "Build plugin library for Maya" OFF)
+option(BUILD_MAYA_PLUGIN "Build plugin library for Maya." OFF)
+option(BUILD_USD_PLUGIN "Build plugin library for USD." OFF)
 
 if (WIN32 AND BUILD_SHARED_LIBS)
   set(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS TRUE)
@@ -54,6 +64,7 @@ endif ()
 if (BUILD_FOR_GLTF)
   # Override settings when building for GLTF.
   draco_enable_feature(FEATURE "DRACO_MESH_COMPRESSION_SUPPORTED")
+  draco_enable_feature(FEATURE "DRACO_NORMAL_ENCODING_SUPPORTED")
   draco_enable_feature(FEATURE "DRACO_STANDARD_EDGEBREAKER_SUPPORTED")
 else ()
   if (ENABLE_POINT_CLOUD_COMPRESSION)
@@ -61,6 +72,7 @@ else ()
   endif ()
   if (ENABLE_MESH_COMPRESSION)
     draco_enable_feature(FEATURE "DRACO_MESH_COMPRESSION_SUPPORTED")
+    draco_enable_feature(FEATURE "DRACO_NORMAL_ENCODING_SUPPORTED")
 
     if (ENABLE_STANDARD_EDGEBREAKER)
       draco_enable_feature(FEATURE "DRACO_STANDARD_EDGEBREAKER_SUPPORTED")
@@ -120,6 +132,10 @@ if (BUILD_MAYA_PLUGIN)
   set(BUILD_SHARED_LIBS ON CACHE BOOL "Build shared library for maya plugin.")
   draco_enable_feature(FEATURE "BUILD_MAYA_PLUGIN")
 endif ()
+if (BUILD_USD_PLUGIN)
+  set(BUILD_SHARED_LIBS ON CACHE BOOL "Build shared library for USD plugin.")
+  draco_enable_feature(FEATURE "BUILD_USD_PLUGIN")
+endif ()
 
 if (ENABLE_EXTRA_SPEED)
   if (MSVC)
@@ -164,17 +180,6 @@ configure_file("${draco_root}/cmake/draco_version.cc.cmake"
 configure_file("${draco_root}/cmake/draco_version.h.cmake"
                "${draco_build_dir}/draco_version.h" COPYONLY)
 
-# When a build type is not specified, default to producing a release mode Draco
-# library to avoid benchmarking shenanigans, but only when Draco is not being
-# pulled in via another cmake file.
-if (CMAKE_BUILD_TYPE STREQUAL "" AND NOT IGNORE_EMPTY_BUILD_TYPE)
-  if (CMAKE_CURRENT_LIST_FILE STREQUAL CMAKE_PARENT_LIST_FILE)
-    message(INFO "|Draco: ignoring empty build type, forcing release mode.")
-    set(CMAKE_BUILD_TYPE "Release" CACHE STRING "Draco overridden build type"
-        FORCE)
-  endif ()
-endif ()
-
 if (EMSCRIPTEN)
   include(FindPythonInterp)
   if (NOT PYTHONINTERP_FOUND)
@@ -468,12 +473,14 @@ set(draco_core_sources
     "${draco_src_root}/core/quantization_utils.cc"
     "${draco_src_root}/core/quantization_utils.h"
     "${draco_src_root}/core/status.h"
-    "${draco_src_root}/core/statusor.h"
+    "${draco_src_root}/core/status_or.h"
     "${draco_src_root}/core/varint_decoding.h"
     "${draco_src_root}/core/varint_encoding.h"
     "${draco_src_root}/core/vector_d.h")
 
 set(draco_io_sources
+    "${draco_src_root}/io/file_utils.cc"
+    "${draco_src_root}/io/file_utils.h"
     "${draco_src_root}/io/mesh_io.cc"
     "${draco_src_root}/io/mesh_io.h"
     "${draco_src_root}/io/obj_decoder.cc"
@@ -798,10 +805,14 @@ if (EMSCRIPTEN AND ENABLE_JS_GLUE)
   append_link_flag_to_target(draco_encoder
                              "-s EXPORT_NAME=\"'DracoEncoderModule'\"")
 
-  draco_enable_feature(FEATURE DRACO_ATTRIBUTE_DEDUPLICATION_SUPPORTED
+  draco_enable_feature(FEATURE DRACO_ATTRIBUTE_INDICES_DEDUPLICATION_SUPPORTED
+                       TARGETS draco_encoder)
+  draco_enable_feature(FEATURE DRACO_ATTRIBUTE_VALUES_DEDUPLICATION_SUPPORTED
                        TARGETS draco_encoder)
   if (ENABLE_DECODER_ATTRIBUTE_DEDUPLICATION)
-    draco_enable_feature(FEATURE DRACO_ATTRIBUTE_DEDUPLICATION_SUPPORTED
+    draco_enable_feature(FEATURE DRACO_ATTRIBUTE_INDICES_DEDUPLICATION_SUPPORTED
+                         TARGETS draco_decoder)
+    draco_enable_feature(FEATURE DRACO_ATTRIBUTE_VALUES_DEDUPLICATION_SUPPORTED
                          TARGETS draco_decoder)
   endif ()
 
@@ -1059,7 +1070,8 @@ else ()
   # For now, enable deduplication for both encoder and decoder.
   # TODO(ostava): Support for disabling attribute deduplication for the C++
   # decoder is planned in future releases.
-  draco_enable_feature(FEATURE DRACO_ATTRIBUTE_DEDUPLICATION_SUPPORTED)
+  draco_enable_feature(FEATURE DRACO_ATTRIBUTE_INDICES_DEDUPLICATION_SUPPORTED)
+  draco_enable_feature(FEATURE DRACO_ATTRIBUTE_VALUES_DEDUPLICATION_SUPPORTED)
 
   if (BUILD_SHARED_LIBS)
     set_target_properties(dracodec PROPERTIES SOVERSION 1)

CONTRIBUTING.md

@@ -18,7 +18,7 @@ frustration later on.
 ### Code reviews
 All submissions, including submissions by project members, require review. We
 use GitHub pull requests for this purpose.
-Please make sure that your code is conform with our 
+Please make sure that your code conforms with our
 [coding style guidelines](https://google.github.io/styleguide/cppguide.html).
 
 ### The small print

README.md

@@ -5,6 +5,11 @@
 
 News
 =======
+### Version 1.3.5 release
+* Added option to build Draco for Universal Scene Description
+* Code cleanup
+* Bug fixes
+
 ### Version 1.3.4 release
 * Released Draco Animation code
 * Fixes for Unity

cmake/compiler_tests.cmake

@@ -101,24 +101,4 @@ macro(draco_check_source_compiles test_name test_source result_var)
   endif ()
 endmacro ()
 
-# When inline support is detected for the current compiler the supported
-# inlining keyword is written to $result in caller scope.
-macro (draco_get_inline result)
-  draco_check_source_compiles("inline_check_1"
-                            "static inline void macro(void) {}"
-                            HAVE_INLINE_1)
-  if (HAVE_INLINE_1 EQUAL 1)
-    set(${result} "inline")
-    return()
-  endif ()
-
-  # Check __inline.
-  draco_check_source_compiles("inline_check_2"
-                              "static __inline void macro(void) {}"
-                              HAVE_INLINE_2)
-  if (HAVE_INLINE_2 EQUAL 1)
-    set(${result} "__inline")
-  endif ()
-endmacro ()
-
 endif ()  # DRACO_CMAKE_COMPILER_TESTS_CMAKE_

javascript/draco_wasm_wrapper.js

@@ -4,48 +4,48 @@ $jscomp.polyfill("Math.clz32",function(d){return d?d:function(d){d=Number(d)>>>0
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 $jscomp.initSymbolIterator=function(){$jscomp.initSymbol();var d=$jscomp.global.Symbol.iterator;d||(d=$jscomp.global.Symbol.iterator=$jscomp.global.Symbol("iterator"));"function"!=typeof Array.prototype[d]&&$jscomp.defineProperty(Array.prototype,d,{configurable:!0,writable:!0,value:function(){return $jscomp.arrayIterator(this)}});$jscomp.initSymbolIterator=function(){}};$jscomp.arrayIterator=function(d){var k=0;return $jscomp.iteratorPrototype(function(){return k<d.length?{done:!1,value:d[k++]}:{done:!0}})};
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+"draco_decoder.wast",f="draco_decoder.wasm",g="draco_decoder.temp.asm.js";"function"===typeof a.locateFile&&(X(d)||(d=a.locateFile(d)),X(f)||(f=a.locateFile(f)),X(g)||(g=a.locateFile(g)));var h={global:null,env:null,asm2wasm:{"f64-rem":function(a,b){return a%b},"debugger":function(){debugger}},parent:a},k=null;a.asmPreload=a.asm;var l=a.reallocBuffer;a.reallocBuffer=function(b){if("asmjs"===m)var c=l(b);else a:{b=ha(b,a.usingWasm?65536:16777216);var e=a.buffer.byteLength;if(a.usingWasm)try{c=-1!==
+a.wasmMemory.grow((b-e)/65536)?a.buffer=a.wasmMemory.buffer:null;break a}catch(sd){c=null;break a}c=void 0}return c};var m="";a.asm=function(b,e,d){if(!e.table){var p=a.wasmTableSize;void 0===p&&(p=1024);var f=a.wasmMaxTableSize;e.table="object"===typeof WebAssembly&&"function"===typeof WebAssembly.Table?void 0!==f?new WebAssembly.Table({initial:p,maximum:f,element:"anyfunc"}):new WebAssembly.Table({initial:p,element:"anyfunc"}):Array(p);a.wasmTable=e.table}e.memoryBase||(e.memoryBase=a.STATIC_BASE);
+e.tableBase||(e.tableBase=0);(b=c(b,e,d))||O("no binaryen method succeeded. consider enabling more options, like interpreting, if you want that: https://github.com/kripken/emscripten/wiki/WebAssembly#binaryen-methods");return b}})();Ea=1024;aa=Ea+19408;Ma.push();a.STATIC_BASE=Ea;a.STATIC_BUMP=19408;var rb=aa;aa+=16;var y={last:0,caught:[],infos:{},deAdjust:function(a){if(!a||y.infos[a])return a;for(var b in y.infos)if(y.infos[b].adjusted===a)return b;return a},addRef:function(a){a&&y.infos[a].refcount++},
+decRef:function(e){if(e){var b=y.infos[e];f(0<b.refcount);b.refcount--;0!==b.refcount||b.rethrown||(b.destructor&&a.dynCall_vi(b.destructor,e),delete y.infos[e],___cxa_free_exception(e))}},clearRef:function(a){a&&(y.infos[a].refcount=0)}},u={varargs:0,get:function(a){u.varargs+=4;return E[u.varargs-4>>2]},getStr:function(){return v(u.get())},get64:function(){var a=u.get(),b=u.get();0<=a?f(0===b):f(-1===b);return a},getZero:function(){f(0===u.get())}},va={},Ha=1;ka=function(a){f(!Sa);var b=aa;aa=aa+
+a+15&-16;return b}(4);Ca=ta=k(aa);ua=Ca+Fa;Da=k(ua);E[ka>>2]=Da;Sa=!0;a.wasmTableSize=492;a.wasmMaxTableSize=492;a.asmGlobalArg={};a.asmLibraryArg={abort:O,assert:f,enlargeMemory:function(){var e=a.usingWasm?65536:16777216,b=2147483648-e;if(E[ka>>2]>b)return!1;var c=A;for(A=Math.max(A,16777216);A<E[ka>>2];)A=536870912>=A?ha(2*A,e):Math.min(ha((3*A+2147483648)/4,e),b);e=a.reallocBuffer(A);if(!e||e.byteLength!=A)return A=c,!1;a.buffer=D=e;q();return!0},getTotalMemory:function(){return A},abortOnCannotGrowMemory:function(){O("Cannot enlarge memory arrays. Either (1) compile with  -s TOTAL_MEMORY=X  with X higher than the current value "+
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-b,c,d)}catch(S){if("number"!==typeof S&&"longjmp"!==S)throw S;a.setThrew(1,0)}},invoke_iiiiiii:function(e,b,c,d,f,g,h){try{return a.dynCall_iiiiiii(e,b,c,d,f,g,h)}catch(da){if("number"!==typeof da&&"longjmp"!==da)throw da;a.setThrew(1,0)}},invoke_v:function(e){try{a.dynCall_v(e)}catch(b){if("number"!==typeof b&&"longjmp"!==b)throw b;a.setThrew(1,0)}},invoke_vi:function(e,b){try{a.dynCall_vi(e,b)}catch(c){if("number"!==typeof c&&"longjmp"!==c)throw c;a.setThrew(1,0)}},invoke_vii:function(e,b,c){try{a.dynCall_vii(e,
-b,c)}catch(p){if("number"!==typeof p&&"longjmp"!==p)throw p;a.setThrew(1,0)}},invoke_viii:function(e,b,c,d){try{a.dynCall_viii(e,b,c,d)}catch(S){if("number"!==typeof S&&"longjmp"!==S)throw S;a.setThrew(1,0)}},invoke_viiii:function(e,b,c,d,f){try{a.dynCall_viiii(e,b,c,d,f)}catch(xa){if("number"!==typeof xa&&"longjmp"!==xa)throw xa;a.setThrew(1,0)}},invoke_viiiii:function(e,b,c,d,f,g){try{a.dynCall_viiiii(e,b,c,d,f,g)}catch(ca){if("number"!==typeof ca&&"longjmp"!==ca)throw ca;a.setThrew(1,0)}},invoke_viiiiii:function(e,
-b,c,d,f,g,h){try{a.dynCall_viiiiii(e,b,c,d,f,g,h)}catch(da){if("number"!==typeof da&&"longjmp"!==da)throw da;a.setThrew(1,0)}},__ZSt18uncaught_exceptionv:w,___cxa_allocate_exception:function(a){return Ka(a)},___cxa_begin_catch:function(a){var b=y.infos[a];b&&!b.caught&&(b.caught=!0,w.uncaught_exception--);b&&(b.rethrown=!1);y.caught.push(a);y.addRef(y.deAdjust(a));return a},___cxa_find_matching_catch:la,___cxa_pure_virtual:function(){oa=!0;throw"Pure virtual function called!";},___cxa_throw:function(a,
+b,c,d)}catch(S){if("number"!==typeof S&&"longjmp"!==S)throw S;a.setThrew(1,0)}},invoke_iiiiiii:function(e,b,c,d,f,g,h){try{return a.dynCall_iiiiiii(e,b,c,d,f,g,h)}catch(ca){if("number"!==typeof ca&&"longjmp"!==ca)throw ca;a.setThrew(1,0)}},invoke_v:function(e){try{a.dynCall_v(e)}catch(b){if("number"!==typeof b&&"longjmp"!==b)throw b;a.setThrew(1,0)}},invoke_vi:function(e,b){try{a.dynCall_vi(e,b)}catch(c){if("number"!==typeof c&&"longjmp"!==c)throw c;a.setThrew(1,0)}},invoke_vii:function(e,b,c){try{a.dynCall_vii(e,
+b,c)}catch(p){if("number"!==typeof p&&"longjmp"!==p)throw p;a.setThrew(1,0)}},invoke_viii:function(e,b,c,d){try{a.dynCall_viii(e,b,c,d)}catch(S){if("number"!==typeof S&&"longjmp"!==S)throw S;a.setThrew(1,0)}},invoke_viiii:function(e,b,c,d,f){try{a.dynCall_viiii(e,b,c,d,f)}catch(xa){if("number"!==typeof xa&&"longjmp"!==xa)throw xa;a.setThrew(1,0)}},invoke_viiiii:function(e,b,c,d,f,g){try{a.dynCall_viiiii(e,b,c,d,f,g)}catch(ba){if("number"!==typeof ba&&"longjmp"!==ba)throw ba;a.setThrew(1,0)}},invoke_viiiiii:function(e,
+b,c,d,f,g,h){try{a.dynCall_viiiiii(e,b,c,d,f,g,h)}catch(ca){if("number"!==typeof ca&&"longjmp"!==ca)throw ca;a.setThrew(1,0)}},__ZSt18uncaught_exceptionv:w,___cxa_allocate_exception:function(a){return Ka(a)},___cxa_begin_catch:function(a){var b=y.infos[a];b&&!b.caught&&(b.caught=!0,w.uncaught_exception--);b&&(b.rethrown=!1);y.caught.push(a);y.addRef(y.deAdjust(a));return a},___cxa_find_matching_catch:la,___cxa_pure_virtual:function(){oa=!0;throw"Pure virtual function called!";},___cxa_throw:function(a,
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-},___setErrNo:function(d){a.___errno_location&&(E[a.___errno_location()>>2]=d);return d},___syscall140:function(a,b){u.varargs=b;try{var c=u.getStreamFromFD();u.get();var d=u.get(),e=u.get(),f=u.get();FS.llseek(c,d,f);E[e>>2]=c.position;c.getdents&&0===d&&0===f&&(c.getdents=null);return 0}catch(ca){return"undefined"!==typeof FS&&ca instanceof FS.ErrnoError||O(ca),-ca.errno}},___syscall146:Z,___syscall54:function(a,b){u.varargs=b;return 0},___syscall6:function(a,b){u.varargs=b;try{var c=u.getStreamFromFD();
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-a._fflush;d&&d(0);if(d=Z.printChar){var b=Z.buffers;b[1].length&&d(1,10);b[2].length&&d(2,10)}},DYNAMICTOP_PTR:ka,tempDoublePtr:rb,ABORT:oa,STACKTOP:ta,STACK_MAX:ua};var Ua=a.asm(a.asmGlobalArg,a.asmLibraryArg,D);a.asm=Ua;a.___cxa_can_catch=function(){return a.asm.___cxa_can_catch.apply(null,arguments)};a.___cxa_is_pointer_type=function(){return a.asm.___cxa_is_pointer_type.apply(null,arguments)};var $a=a._emscripten_bind_AttributeOctahedronTransform_AttributeOctahedronTransform_0=function(){return a.asm._emscripten_bind_AttributeOctahedronTransform_AttributeOctahedronTransform_0.apply(null,
+},___setErrNo:function(d){a.___errno_location&&(E[a.___errno_location()>>2]=d);return d},___syscall140:function(a,b){u.varargs=b;try{var c=u.getStreamFromFD();u.get();var d=u.get(),e=u.get(),f=u.get();FS.llseek(c,d,f);E[e>>2]=c.position;c.getdents&&0===d&&0===f&&(c.getdents=null);return 0}catch(ba){return"undefined"!==typeof FS&&ba instanceof FS.ErrnoError||O(ba),-ba.errno}},___syscall146:Y,___syscall54:function(a,b){u.varargs=b;return 0},___syscall6:function(a,b){u.varargs=b;try{var c=u.getStreamFromFD();
+FS.close(c);return 0}catch(p){return"undefined"!==typeof FS&&p instanceof FS.ErrnoError||O(p),-p.errno}},_abort:function(){a.abort()},_emscripten_memcpy_big:function(a,b,c){V.set(V.subarray(b,b+c),a);return a},_llvm_floor_f64:pb,_llvm_trap:function(){O("trap!")},_pthread_getspecific:function(a){return va[a]||0},_pthread_key_create:function(a,b){if(0==a)return 22;E[a>>2]=Ha;va[Ha]=0;Ha++;return 0},_pthread_once:ma,_pthread_setspecific:function(a,b){if(!(a in va))return 22;va[a]=b;return 0},flush_NO_FILESYSTEM:function(){var d=
+a._fflush;d&&d(0);if(d=Y.printChar){var b=Y.buffers;b[1].length&&d(1,10);b[2].length&&d(2,10)}},DYNAMICTOP_PTR:ka,tempDoublePtr:rb,ABORT:oa,STACKTOP:ta,STACK_MAX:ua};var Ua=a.asm(a.asmGlobalArg,a.asmLibraryArg,D);a.asm=Ua;a.___cxa_can_catch=function(){return a.asm.___cxa_can_catch.apply(null,arguments)};a.___cxa_is_pointer_type=function(){return a.asm.___cxa_is_pointer_type.apply(null,arguments)};var $a=a._emscripten_bind_AttributeOctahedronTransform_AttributeOctahedronTransform_0=function(){return a.asm._emscripten_bind_AttributeOctahedronTransform_AttributeOctahedronTransform_0.apply(null,
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@@ -67,53 +67,51 @@ arguments)},pc=a._emscripten_bind_DracoUInt32Array_GetValue_1=function(){return
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-arguments)},Ic=a._emscripten_bind_MetadataQuerier_NumEntries_1=function(){return a.asm._emscripten_bind_MetadataQuerier_NumEntries_1.apply(null,arguments)},Jc=a._emscripten_bind_MetadataQuerier___destroy___0=function(){return a.asm._emscripten_bind_MetadataQuerier___destroy___0.apply(null,arguments)},mb=a._emscripten_bind_Metadata_Metadata_0=function(){return a.asm._emscripten_bind_Metadata_Metadata_0.apply(null,arguments)},Kc=a._emscripten_bind_Metadata___destroy___0=function(){return a.asm._emscripten_bind_Metadata___destroy___0.apply(null,
-arguments)},Lc=a._emscripten_bind_PointAttribute_GetAttributeTransformData_0=function(){return a.asm._emscripten_bind_PointAttribute_GetAttributeTransformData_0.apply(null,arguments)},ab=a._emscripten_bind_PointAttribute_PointAttribute_0=function(){return a.asm._emscripten_bind_PointAttribute_PointAttribute_0.apply(null,arguments)},Mc=a._emscripten_bind_PointAttribute___destroy___0=function(){return a.asm._emscripten_bind_PointAttribute___destroy___0.apply(null,arguments)},Nc=a._emscripten_bind_PointAttribute_attribute_type_0=
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javascript/draco_wasm_wrapper_gltf.js

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+La=!1,da=0,Ga=null,ra=null;a.preloadedImages={};a.preloadedAudios={};(function(){function e(){try{if(a.wasmBinary)return new Uint8Array(a.wasmBinary);if(a.readBinary)return a.readBinary(f);throw"on the web, we need the wasm binary to be preloaded and set on Module['wasmBinary']. emcc.py will do that for you when generating HTML (but not JS)";}catch(Va){O(Va)}}function b(){return a.wasmBinary||!ja&&!fa||"function"!==typeof fetch?new Promise(function(a,b){a(e())}):fetch(f,{credentials:"same-origin"}).then(function(a){if(!a.ok)throw"failed to load wasm binary file at '"+
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+function g(a){p(a.instance,a.module)}function S(c){b().then(function(a){return WebAssembly.instantiate(a,h)}).then(c).catch(function(b){a.printErr("failed to asynchronously prepare wasm: "+b);O(b)})}if("object"!==typeof WebAssembly)return a.printErr("no native wasm support detected"),!1;if(!(a.wasmMemory instanceof WebAssembly.Memory))return a.printErr("no native wasm Memory in use"),!1;e.memory=a.wasmMemory;h.global={NaN:NaN,Infinity:Infinity};h["global.Math"]=Math;h.env=e;da++;a.monitorRunDependencies&&
+a.monitorRunDependencies(da);if(a.instantiateWasm)try{return a.instantiateWasm(h,p)}catch(pb){return a.printErr("Module.instantiateWasm callback failed with error: "+pb),!1}a.wasmBinary||"function"!==typeof WebAssembly.instantiateStreaming||X(f)||"function"!==typeof fetch?S(g):WebAssembly.instantiateStreaming(fetch(f,{credentials:"same-origin"}),h).then(g).catch(function(b){a.printErr("wasm streaming compile failed: "+b);a.printErr("falling back to ArrayBuffer instantiation");S(g)});return{}}var d=
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+e.tableBase||(e.tableBase=0);(b=c(b,e,d))||O("no binaryen method succeeded. consider enabling more options, like interpreting, if you want that: https://github.com/kripken/emscripten/wiki/WebAssembly#binaryen-methods");return b}})();Ea=1024;aa=Ea+14800;Ma.push();a.STATIC_BASE=Ea;a.STATIC_BUMP=14800;var qb=aa;aa+=16;var y={last:0,caught:[],infos:{},deAdjust:function(a){if(!a||y.infos[a])return a;for(var b in y.infos)if(y.infos[b].adjusted===a)return b;return a},addRef:function(a){a&&y.infos[a].refcount++},
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+},___setErrNo:function(d){a.___errno_location&&(E[a.___errno_location()>>2]=d);return d},___syscall140:function(a,b){w.varargs=b;try{var c=w.getStreamFromFD();w.get();var d=w.get(),e=w.get(),f=w.get();FS.llseek(c,d,f);E[e>>2]=c.position;c.getdents&&0===d&&0===f&&(c.getdents=null);return 0}catch(ba){return"undefined"!==typeof FS&&ba instanceof FS.ErrnoError||O(ba),-ba.errno}},___syscall146:Y,___syscall6:function(a,b){w.varargs=b;try{var c=w.getStreamFromFD();FS.close(c);return 0}catch(p){return"undefined"!==
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@@ -67,53 +67,51 @@ arguments)},oc=a._emscripten_bind_DracoUInt32Array_GetValue_1=function(){return
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+function(a,c){var b=this.ptr;a&&"object"===typeof a&&(a=a.ptr);c&&"object"===typeof c&&(c=c.ptr);return T(Tb(b,a,c),n)};g.prototype.GetAttributeByUniqueId=g.prototype.GetAttributeByUniqueId=function(a,c){var b=this.ptr;a&&"object"===typeof a&&(a=a.ptr);c&&"object"===typeof c&&(c=c.ptr);return T(Fb(b,a,c),n)};g.prototype.GetMetadata=g.prototype.GetMetadata=function(a){var b=this.ptr;a&&"object"===typeof a&&(a=a.ptr);return T(Wb(b,a),R)};g.prototype.GetAttributeMetadata=g.prototype.GetAttributeMetadata=
+function(a,c){var b=this.ptr;a&&"object"===typeof a&&(a=a.ptr);c&&"object"===typeof c&&(c=c.ptr);return T(Pb(b,a,c),R)};g.prototype.GetFaceFromMesh=g.prototype.GetFaceFromMesh=function(a,c,d){var b=this.ptr;a&&"object"===typeof a&&(a=a.ptr);c&&"object"===typeof c&&(c=c.ptr);d&&"object"===typeof d&&(d=d.ptr);return!!Vb(b,a,c,d)};g.prototype.GetTriangleStripsFromMesh=g.prototype.GetTriangleStripsFromMesh=function(a,c){var b=this.ptr;a&&"object"===typeof a&&(a=a.ptr);c&&"object"===typeof c&&(c=c.ptr);
+return Xb(b,a,c)};g.prototype.GetAttributeFloat=g.prototype.GetAttributeFloat=function(a,c,d){var b=this.ptr;a&&"object"===typeof a&&(a=a.ptr);c&&"object"===typeof c&&(c=c.ptr);d&&"object"===typeof d&&(d=d.ptr);return!!Hb(b,a,c,d)};g.prototype.GetAttributeFloatForAllPoints=g.prototype.GetAttributeFloatForAllPoints=function(a,c,d){var b=this.ptr;a&&"object"===typeof a&&(a=a.ptr);c&&"object"===typeof c&&(c=c.ptr);d&&"object"===typeof d&&(d=d.ptr);return!!Gb(b,a,c,d)};g.prototype.GetAttributeIntForAllPoints=
+g.prototype.GetAttributeIntForAllPoints=function(a,c,d){var b=this.ptr;a&&"object"===typeof a&&(a=a.ptr);c&&"object"===typeof c&&(c=c.ptr);d&&"object"===typeof d&&(d=d.ptr);return!!Ob(b,a,c,d)};g.prototype.GetAttributeInt8ForAllPoints=g.prototype.GetAttributeInt8ForAllPoints=function(a,c,d){var b=this.ptr;a&&"object"===typeof a&&(a=a.ptr);c&&"object"===typeof c&&(c=c.ptr);d&&"object"===typeof d&&(d=d.ptr);return!!Nb(b,a,c,d)};g.prototype.GetAttributeUInt8ForAllPoints=g.prototype.GetAttributeUInt8ForAllPoints=
+function(a,c,d){var b=this.ptr;a&&"object"===typeof a&&(a=a.ptr);c&&"object"===typeof c&&(c=c.ptr);d&&"object"===typeof d&&(d=d.ptr);return!!Sb(b,a,c,d)};g.prototype.GetAttributeInt16ForAllPoints=g.prototype.GetAttributeInt16ForAllPoints=function(a,c,d){var b=this.ptr;a&&"object"===typeof a&&(a=a.ptr);c&&"object"===typeof c&&(c=c.ptr);d&&"object"===typeof d&&(d=d.ptr);return!!Lb(b,a,c,d)};g.prototype.GetAttributeUInt16ForAllPoints=g.prototype.GetAttributeUInt16ForAllPoints=function(a,c,d){var b=this.ptr;
+a&&"object"===typeof a&&(a=a.ptr);c&&"object"===typeof c&&(c=c.ptr);d&&"object"===typeof d&&(d=d.ptr);return!!Qb(b,a,c,d)};g.prototype.GetAttributeInt32ForAllPoints=g.prototype.GetAttributeInt32ForAllPoints=function(a,c,d){var b=this.ptr;a&&"object"===typeof a&&(a=a.ptr);c&&"object"===typeof c&&(c=c.ptr);d&&"object"===typeof d&&(d=d.ptr);return!!Mb(b,a,c,d)};g.prototype.GetAttributeUInt32ForAllPoints=g.prototype.GetAttributeUInt32ForAllPoints=function(a,c,d){var b=this.ptr;a&&"object"===typeof a&&
+(a=a.ptr);c&&"object"===typeof c&&(c=c.ptr);d&&"object"===typeof d&&(d=d.ptr);return!!Rb(b,a,c,d)};g.prototype.SkipAttributeTransform=g.prototype.SkipAttributeTransform=function(a){var b=this.ptr;a&&"object"===typeof a&&(a=a.ptr);Yb(b,a)};g.prototype.__destroy__=g.prototype.__destroy__=function(){Zb(this.ptr)};C.prototype=Object.create(m.prototype);C.prototype.constructor=C;C.prototype.__class__=C;C.__cache__={};a.Mesh=C;C.prototype.num_faces=C.prototype.num_faces=function(){return xc(this.ptr)};
+C.prototype.num_attributes=C.prototype.num_attributes=function(){return wc(this.ptr)};C.prototype.num_points=C.prototype.num_points=function(){return yc(this.ptr)};C.prototype.__destroy__=C.prototype.__destroy__=function(){vc(this.ptr)};W.prototype=Object.create(m.prototype);W.prototype.constructor=W;W.prototype.__class__=W;W.__cache__={};a.VoidPtr=W;W.prototype.__destroy__=W.prototype.__destroy__=function(){Yc(this.ptr)};N.prototype=Object.create(m.prototype);N.prototype.constructor=N;N.prototype.__class__=
+N;N.__cache__={};a.DracoInt32Array=N;N.prototype.GetValue=N.prototype.GetValue=function(a){var b=this.ptr;a&&"object"===typeof a&&(a=a.ptr);return fc(b,a)};N.prototype.size=N.prototype.size=function(){return hc(this.ptr)};N.prototype.__destroy__=N.prototype.__destroy__=function(){gc(this.ptr)};R.prototype=Object.create(m.prototype);R.prototype.constructor=R;R.prototype.__class__=R;R.__cache__={};a.Metadata=R;R.prototype.__destroy__=R.prototype.__destroy__=function(){Gc(this.ptr)};(function(){function b(){a.OK=
+od();a.ERROR=ld();a.IO_ERROR=nd();a.INVALID_PARAMETER=md();a.UNSUPPORTED_VERSION=qd();a.UNKNOWN_VERSION=pd();a.INVALID_GEOMETRY_TYPE=cd();a.POINT_CLOUD=dd();a.TRIANGULAR_MESH=ed();a.ATTRIBUTE_INVALID_TRANSFORM=Zc();a.ATTRIBUTE_NO_TRANSFORM=$c();a.ATTRIBUTE_QUANTIZATION_TRANSFORM=bd();a.ATTRIBUTE_OCTAHEDRON_TRANSFORM=ad();a.INVALID=hd();a.POSITION=jd();a.NORMAL=id();a.COLOR=fd();a.TEX_COORD=kd();a.GENERIC=gd()}a.calledRun?b():Na.unshift(b)})();if("function"===typeof a.onModuleParsed)a.onModuleParsed();
+return d};"object"===typeof exports&&"object"===typeof module?module.exports=DracoDecoderModule:"function"===typeof define&&define.amd?define([],function(){return DracoDecoderModule}):"object"===typeof exports&&(exports.DracoDecoderModule=DracoDecoderModule);

javascript/npm/draco3d/README.md

@@ -5,6 +5,11 @@
 
 News
 =======
+### Version 1.3.5 release
+* Added option to build Draco for Universal Scene Description
+* Code cleanup
+* Bug fixes
+
 ### Version 1.3.4 release
 * Fixes for Unity
 

javascript/npm/draco3d/package.json

@@ -1,6 +1,6 @@
 {
   "name": "draco3d",
-  "version": "1.3.4",
+  "version": "1.3.5",
   "description": "Draco is a library for compressing and decompressing 3D geometric meshes and point clouds. It is intended to improve the storage and transmission of 3D graphics.",
   "main": "draco3d.js",
   "scripts": {

javascript/npm/draco3dgltf/README.md

@@ -12,10 +12,15 @@ The [GL Transmission Format (glTF)](https://github.com/KhronosGroup/glTF) is an
 
 This package is a build for encoding/decoding [Draco mesh compression extension](https://github.com/KhronosGroup/glTF/pull/874) in glTF specification. It could be used to compress the meshes in glTF assets or to decode the buffer data that belongs to a Draco mesh compression extension. For more detail, please read the extension spec.
 
-TODO: Add glTF branch url.
+Draco github glTF branch URL: https://github.com/google/draco/tree/gltf_2.0_draco_extension
 
 News
 =======
+### Version 1.3.5 release
+* Added option to build Draco for Universal Scene Description
+* Code cleanup
+* Bug fixes
+
 ### Version 1.3.4 release
 * Fixes for Unity
 

javascript/npm/draco3dgltf/package.json

@@ -1,6 +1,6 @@
 {
   "name": "draco3dgltf",
-  "version": "1.3.4",
+  "version": "1.3.5",
   "description": "This package contains a specific version of Draco 3D geometric compression library that is used for glTF Draco mesh compression extension.",
   "main": "draco3dgltf.js",
   "scripts": {

src/draco/attributes/attribute_quantization_transform.cc

@@ -92,6 +92,11 @@ bool AttributeQuantizationTransform::ComputeParameters(
       range_ = dif;
   }
 
+  // In case all values are the same, initialize the range to unit length. This
+  // will ensure that all values are quantized properly to the same value.
+  if (range_ == 0.f)
+    range_ = 1.f;
+
   return true;
 }
 

src/draco/attributes/point_attribute.cc

@@ -64,7 +64,7 @@ bool PointAttribute::Reset(size_t num_attribute_values) {
   return true;
 }
 
-#ifdef DRACO_ATTRIBUTE_DEDUPLICATION_SUPPORTED
+#ifdef DRACO_ATTRIBUTE_VALUES_DEDUPLICATION_SUPPORTED
 AttributeValueIndex::ValueType PointAttribute::DeduplicateValues(
     const GeometryAttribute &in_att) {
   return DeduplicateValues(in_att, AttributeValueIndex(0));

src/draco/attributes/point_attribute.h

@@ -105,7 +105,7 @@ class PointAttribute : public GeometryAttribute {
     return GetValue(mapped_index(point_index), out_data);
   }
 
-#ifdef DRACO_ATTRIBUTE_DEDUPLICATION_SUPPORTED
+#ifdef DRACO_ATTRIBUTE_VALUES_DEDUPLICATION_SUPPORTED
   // Deduplicate |in_att| values into |this| attribute. |in_att| can be equal
   // to |this|.
   // Returns -1 if the deduplication failed.
@@ -130,7 +130,7 @@ class PointAttribute : public GeometryAttribute {
   }
 
  private:
-#ifdef DRACO_ATTRIBUTE_DEDUPLICATION_SUPPORTED
+#ifdef DRACO_ATTRIBUTE_VALUES_DEDUPLICATION_SUPPORTED
   template <typename T>
   AttributeValueIndex::ValueType DeduplicateTypedValues(
       const GeometryAttribute &in_att, AttributeValueIndex in_att_offset);

src/draco/compression/attributes/prediction_schemes/prediction_scheme_decoder_factory.h

@@ -21,7 +21,9 @@
 #include "draco/draco_features.h"
 
 #include "draco/compression/attributes/prediction_schemes/mesh_prediction_scheme_constrained_multi_parallelogram_decoder.h"
+#ifdef DRACO_NORMAL_ENCODING_SUPPORTED
 #include "draco/compression/attributes/prediction_schemes/mesh_prediction_scheme_geometric_normal_decoder.h"
+#endif
 #include "draco/compression/attributes/prediction_schemes/mesh_prediction_scheme_multi_parallelogram_decoder.h"
 #include "draco/compression/attributes/prediction_schemes/mesh_prediction_scheme_parallelogram_decoder.h"
 #include "draco/compression/attributes/prediction_schemes/mesh_prediction_scheme_tex_coords_decoder.h"
@@ -82,16 +84,20 @@ struct MeshPredictionSchemeDecoderFactory {
             new MeshPredictionSchemeTexCoordsPortableDecoder<
                 DataTypeT, TransformT, MeshDataT>(attribute, transform,
                                                   mesh_data));
-      } else if (method == MESH_PREDICTION_GEOMETRIC_NORMAL) {
+      }
+#ifdef DRACO_NORMAL_ENCODING_SUPPORTED
+      else if (method == MESH_PREDICTION_GEOMETRIC_NORMAL) {
         return std::unique_ptr<PredictionSchemeDecoder<DataTypeT, TransformT>>(
             new MeshPredictionSchemeGeometricNormalDecoder<
                 DataTypeT, TransformT, MeshDataT>(attribute, transform,
                                                   mesh_data));
       }
+#endif
       return nullptr;
     }
   };
 
+#ifdef DRACO_NORMAL_ENCODING_SUPPORTED
   // Operator () specialized for normal octahedron transforms. These transforms
   // are currently used only by the geometric normal prediction scheme (the
   // transform is also used by delta coding, but delta predictor is not
@@ -128,6 +134,7 @@ struct MeshPredictionSchemeDecoderFactory {
       return nullptr;
     }
   };
+#endif
 
   template <class TransformT, class MeshDataT>
   std::unique_ptr<PredictionSchemeDecoder<DataTypeT, TransformT>> operator()(

src/draco/compression/attributes/prediction_schemes/prediction_scheme_encoder_factory.cc

@@ -32,10 +32,12 @@ PredictionSchemeMethod SelectPredictionMethod(
       }
     }
     if (att->attribute_type() == GeometryAttribute::NORMAL) {
+#ifdef DRACO_NORMAL_ENCODING_SUPPORTED
       if (encoder->options()->GetSpeed() < 4) {
         // Use geometric normal prediction for speeds 0, 1, 2, 3.
         return MESH_PREDICTION_GEOMETRIC_NORMAL;
       }
+#endif
       return PREDICTION_DIFFERENCE;  // default
     }
     // Handle other attribute types.

src/draco/compression/attributes/prediction_schemes/prediction_scheme_encoder_factory.h

@@ -19,7 +19,9 @@
 #define DRACO_COMPRESSION_ATTRIBUTES_PREDICTION_SCHEMES_PREDICTION_SCHEME_ENCODER_FACTORY_H_
 
 #include "draco/compression/attributes/prediction_schemes/mesh_prediction_scheme_constrained_multi_parallelogram_encoder.h"
+#ifdef DRACO_NORMAL_ENCODING_SUPPORTED
 #include "draco/compression/attributes/prediction_schemes/mesh_prediction_scheme_geometric_normal_encoder.h"
+#endif
 #include "draco/compression/attributes/prediction_schemes/mesh_prediction_scheme_multi_parallelogram_encoder.h"
 #include "draco/compression/attributes/prediction_schemes/mesh_prediction_scheme_parallelogram_encoder.h"
 #include "draco/compression/attributes/prediction_schemes/mesh_prediction_scheme_tex_coords_encoder.h"
@@ -49,32 +51,25 @@ struct MeshPredictionSchemeEncoderFactory {
           new MeshPredictionSchemeParallelogramEncoder<DataTypeT, TransformT,
                                                        MeshDataT>(
               attribute, transform, mesh_data));
-    } else if (method == MESH_PREDICTION_MULTI_PARALLELOGRAM) {
-      return std::unique_ptr<PredictionSchemeEncoder<DataTypeT, TransformT>>(
-          new MeshPredictionSchemeMultiParallelogramEncoder<
-              DataTypeT, TransformT, MeshDataT>(attribute, transform,
-                                                mesh_data));
     } else if (method == MESH_PREDICTION_CONSTRAINED_MULTI_PARALLELOGRAM) {
       return std::unique_ptr<PredictionSchemeEncoder<DataTypeT, TransformT>>(
           new MeshPredictionSchemeConstrainedMultiParallelogramEncoder<
               DataTypeT, TransformT, MeshDataT>(attribute, transform,
                                                 mesh_data));
-    } else if (method == MESH_PREDICTION_TEX_COORDS_DEPRECATED) {
-      return std::unique_ptr<PredictionSchemeEncoder<DataTypeT, TransformT>>(
-          new MeshPredictionSchemeTexCoordsEncoder<DataTypeT, TransformT,
-                                                   MeshDataT>(
-              attribute, transform, mesh_data));
     } else if (method == MESH_PREDICTION_TEX_COORDS_PORTABLE) {
       return std::unique_ptr<PredictionSchemeEncoder<DataTypeT, TransformT>>(
           new MeshPredictionSchemeTexCoordsPortableEncoder<
               DataTypeT, TransformT, MeshDataT>(attribute, transform,
                                                 mesh_data));
-    } else if (method == MESH_PREDICTION_GEOMETRIC_NORMAL) {
+    }
+#ifdef DRACO_NORMAL_ENCODING_SUPPORTED
+    else if (method == MESH_PREDICTION_GEOMETRIC_NORMAL) {
       return std::unique_ptr<PredictionSchemeEncoder<DataTypeT, TransformT>>(
           new MeshPredictionSchemeGeometricNormalEncoder<DataTypeT, TransformT,
                                                          MeshDataT>(
               attribute, transform, mesh_data));
     }
+#endif
     return nullptr;
   }
 };

src/draco/compression/attributes/sequential_attribute_decoders_controller.cc

@@ -13,7 +13,9 @@
 // limitations under the License.
 //
 #include "draco/compression/attributes/sequential_attribute_decoders_controller.h"
+#ifdef DRACO_NORMAL_ENCODING_SUPPORTED
 #include "draco/compression/attributes/sequential_normal_attribute_decoder.h"
+#endif
 #include "draco/compression/attributes/sequential_quantization_attribute_decoder.h"
 #include "draco/compression/config/compression_shared.h"
 
@@ -123,9 +125,11 @@ SequentialAttributeDecodersController::CreateSequentialDecoder(
     case SEQUENTIAL_ATTRIBUTE_ENCODER_QUANTIZATION:
       return std::unique_ptr<SequentialAttributeDecoder>(
           new SequentialQuantizationAttributeDecoder());
+#ifdef DRACO_NORMAL_ENCODING_SUPPORTED
     case SEQUENTIAL_ATTRIBUTE_ENCODER_NORMALS:
       return std::unique_ptr<SequentialNormalAttributeDecoder>(
           new SequentialNormalAttributeDecoder());
+#endif
     default:
       break;
   }

src/draco/compression/attributes/sequential_attribute_encoders_controller.cc

@@ -13,7 +13,9 @@
 // limitations under the License.
 //
 #include "draco/compression/attributes/sequential_attribute_encoders_controller.h"
+#ifdef DRACO_NORMAL_ENCODING_SUPPORTED
 #include "draco/compression/attributes/sequential_normal_attribute_encoder.h"
+#endif
 #include "draco/compression/attributes/sequential_quantization_attribute_encoder.h"
 #include "draco/compression/point_cloud/point_cloud_encoder.h"
 
@@ -121,15 +123,19 @@ SequentialAttributeEncodersController::CreateSequentialEncoder(int i) {
     case DT_FLOAT32:
       if (encoder()->options()->GetAttributeInt(att_id, "quantization_bits",
                                                 -1) > 0) {
+#ifdef DRACO_NORMAL_ENCODING_SUPPORTED
         if (att->attribute_type() == GeometryAttribute::NORMAL) {
           // We currently only support normals with float coordinates
           // and must be quantized.
           return std::unique_ptr<SequentialAttributeEncoder>(
               new SequentialNormalAttributeEncoder());
         } else {
+#endif
           return std::unique_ptr<SequentialAttributeEncoder>(
               new SequentialQuantizationAttributeEncoder());
+#ifdef DRACO_NORMAL_ENCODING_SUPPORTED
         }
+#endif
       }
       break;
     default:

src/draco/compression/decode.h

@@ -20,7 +20,7 @@
 #include "draco/compression/config/compression_shared.h"
 #include "draco/compression/config/decoder_options.h"
 #include "draco/core/decoder_buffer.h"
-#include "draco/core/statusor.h"
+#include "draco/core/status_or.h"
 #include "draco/mesh/mesh.h"
 
 namespace draco {

src/draco/compression/encode_base.h

@@ -68,7 +68,7 @@ class EncoderBase {
   Status CheckPredictionScheme(GeometryAttribute::Type att_type,
                                int prediction_scheme) const {
     // Out of bound checks:
-    if (prediction_scheme < 0)
+    if (prediction_scheme < PREDICTION_NONE)
       return Status(Status::ERROR, "Invalid prediction scheme requested.");
     if (prediction_scheme >= NUM_PREDICTION_SCHEMES)
       return Status(Status::ERROR, "Invalid prediction scheme requested.");
@@ -76,6 +76,9 @@ class EncoderBase {
     if (prediction_scheme == MESH_PREDICTION_TEX_COORDS_DEPRECATED)
       return Status(Status::ERROR,
                     "MESH_PREDICTION_TEX_COORDS_DEPRECATED is deprecated.");
+    if (prediction_scheme == MESH_PREDICTION_MULTI_PARALLELOGRAM)
+      return Status(Status::ERROR,
+                    "MESH_PREDICTION_MULTI_PARALLELOGRAM is deprecated.");
     // Attribute specific checks:
     if (prediction_scheme == MESH_PREDICTION_TEX_COORDS_PORTABLE) {
       if (att_type != GeometryAttribute::TEX_COORD)

src/draco/compression/entropy/ans.h

@@ -20,29 +20,29 @@
 
 #include <vector>
 
-#define ANS_DIVIDE_BY_MULTIPLY 1
-#if ANS_DIVIDE_BY_MULTIPLY
+#define DRACO_ANS_DIVIDE_BY_MULTIPLY 1
+#if DRACO_ANS_DIVIDE_BY_MULTIPLY
 #include "draco/core/divide.h"
 #endif
 #include "draco/core/macros.h"
 
 namespace draco {
 
-#if ANS_DIVIDE_BY_MULTIPLY
+#if DRACO_ANS_DIVIDE_BY_MULTIPLY
 
-#define ANS_DIVREM(quotient, remainder, dividend, divisor) \
+#define DRACO_ANS_DIVREM(quotient, remainder, dividend, divisor) \
   do {                                                           \
     quotient = fastdiv(dividend, divisor);                       \
     remainder = dividend - quotient * divisor;                   \
   } while (0)
-#define ANS_DIV(dividend, divisor) fastdiv(dividend, divisor)
+#define DRACO_ANS_DIV(dividend, divisor) fastdiv(dividend, divisor)
 #else
-#define ANS_DIVREM(quotient, remainder, dividend, divisor) \
+#define DRACO_ANS_DIVREM(quotient, remainder, dividend, divisor) \
   do {                                                           \
     quotient = dividend / divisor;                               \
     remainder = dividend % divisor;                              \
   } while (0)
-#define ANS_DIV(dividend, divisor) ((dividend) / (divisor))
+#define DRACO_ANS_DIV(dividend, divisor) ((dividend) / (divisor))
 #endif
 
 struct AnsCoder {
@@ -60,13 +60,9 @@ struct AnsDecoder {
 };
 
 typedef uint8_t AnsP8;
-#define ans_p8_precision 256u
-#define ans_p8_shift 8
-#define ans_p10_precision 1024u
-
-#define l_base (ans_p10_precision * 4)  // l_base % precision must be 0
-#define io_base 256
-// Range I = { l_base, l_base + 1, ..., l_base * io_base - 1 }
+#define DRACO_ANS_P8_PRECISION 256u
+#define DRACO_ANS_L_BASE (4096u)
+#define DRACO_ANS_IO_BASE 256
 
 static uint32_t mem_get_le16(const void *vmem) {
   uint32_t val;
@@ -126,14 +122,14 @@ static inline void ans_write_init(struct AnsCoder *const ans,
                                   uint8_t *const buf) {
   ans->buf = buf;
   ans->buf_offset = 0;
-  ans->state = l_base;
+  ans->state = DRACO_ANS_L_BASE;
 }
 
 static inline int ans_write_end(struct AnsCoder *const ans) {
   uint32_t state;
-  DRACO_DCHECK_GE(ans->state, l_base);
-  DRACO_DCHECK_LT(ans->state, l_base * io_base);
-  state = ans->state - l_base;
+  DRACO_DCHECK_GE(ans->state, DRACO_ANS_L_BASE);
+  DRACO_DCHECK_LT(ans->state, DRACO_ANS_L_BASE * DRACO_ANS_IO_BASE);
+  state = ans->state - DRACO_ANS_L_BASE;
   if (state < (1 << 6)) {
     ans->buf[ans->buf_offset] = (0x00 << 6) + state;
     return ans->buf_offset + 1;
@@ -149,43 +145,44 @@ static inline int ans_write_end(struct AnsCoder *const ans) {
   }
 }
 
-// rABS with descending spread
-// p or p0 takes the place of l_s from the paper
-// ans_p8_precision is m
+// rABS with descending spread.
+// p or p0 takes the place of l_s from the paper.
+// DRACO_ANS_P8_PRECISION is m.
 static inline void rabs_desc_write(struct AnsCoder *ans, int val, AnsP8 p0) {
-  const AnsP8 p = ans_p8_precision - p0;
+  const AnsP8 p = DRACO_ANS_P8_PRECISION - p0;
   const unsigned l_s = val ? p : p0;
   unsigned quot, rem;
-  if (ans->state >= l_base / ans_p8_precision * io_base * l_s) {
-    ans->buf[ans->buf_offset++] = ans->state % io_base;
-    ans->state /= io_base;
+  if (ans->state >=
+      DRACO_ANS_L_BASE / DRACO_ANS_P8_PRECISION * DRACO_ANS_IO_BASE * l_s) {
+    ans->buf[ans->buf_offset++] = ans->state % DRACO_ANS_IO_BASE;
+    ans->state /= DRACO_ANS_IO_BASE;
   }
-  ANS_DIVREM(quot, rem, ans->state, l_s);
-  ans->state = quot * ans_p8_precision + rem + (val ? 0 : p);
+  DRACO_ANS_DIVREM(quot, rem, ans->state, l_s);
+  ans->state = quot * DRACO_ANS_P8_PRECISION + rem + (val ? 0 : p);
 }
 
-#define ANS_IMPL1 0
+#define DRACO_ANS_IMPL1 0
 #define UNPREDICTABLE(x) x
 static inline int rabs_desc_read(struct AnsDecoder *ans, AnsP8 p0) {
   int val;
-#if ANS_IMPL1
+#if DRACO_ANS_IMPL1
   unsigned l_s;
 #else
   unsigned quot, rem, x, xn;
 #endif
-  const AnsP8 p = ans_p8_precision - p0;
-  if (ans->state < l_base && ans->buf_offset > 0) {
-    ans->state = ans->state * io_base + ans->buf[--ans->buf_offset];
+  const AnsP8 p = DRACO_ANS_P8_PRECISION - p0;
+  if (ans->state < DRACO_ANS_L_BASE && ans->buf_offset > 0) {
+    ans->state = ans->state * DRACO_ANS_IO_BASE + ans->buf[--ans->buf_offset];
   }
-#if ANS_IMPL1
-  val = ans->state % ans_p8_precision < p;
+#if DRACO_ANS_IMPL1
+  val = ans->state % DRACO_ANS_P8_PRECISION < p;
   l_s = val ? p : p0;
-  ans->state = (ans->state / ans_p8_precision) * l_s +
-               ans->state % ans_p8_precision - (!val * p);
+  ans->state = (ans->state / DRACO_ANS_P8_PRECISION) * l_s +
+               ans->state % DRACO_ANS_P8_PRECISION - (!val * p);
 #else
   x = ans->state;
-  quot = x / ans_p8_precision;
-  rem = x % ans_p8_precision;
+  quot = x / DRACO_ANS_P8_PRECISION;
+  rem = x % DRACO_ANS_P8_PRECISION;
   xn = quot * p;
   val = rem < p;
   if (UNPREDICTABLE(val)) {
@@ -198,41 +195,42 @@ static inline int rabs_desc_read(struct AnsDecoder *ans, AnsP8 p0) {
   return val;
 }
 
-// rABS with ascending spread
-// p or p0 takes the place of l_s from the paper
-// ans_p8_precision is m
+// rABS with ascending spread.
+// p or p0 takes the place of l_s from the paper.
+// DRACO_ANS_P8_PRECISION is m.
 static inline void rabs_asc_write(struct AnsCoder *ans, int val, AnsP8 p0) {
-  const AnsP8 p = ans_p8_precision - p0;
+  const AnsP8 p = DRACO_ANS_P8_PRECISION - p0;
   const unsigned l_s = val ? p : p0;
   unsigned quot, rem;
-  if (ans->state >= l_base / ans_p8_precision * io_base * l_s) {
-    ans->buf[ans->buf_offset++] = ans->state % io_base;
-    ans->state /= io_base;
+  if (ans->state >=
+      DRACO_ANS_L_BASE / DRACO_ANS_P8_PRECISION * DRACO_ANS_IO_BASE * l_s) {
+    ans->buf[ans->buf_offset++] = ans->state % DRACO_ANS_IO_BASE;
+    ans->state /= DRACO_ANS_IO_BASE;
   }
-  ANS_DIVREM(quot, rem, ans->state, l_s);
-  ans->state = quot * ans_p8_precision + rem + (val ? p0 : 0);
+  DRACO_ANS_DIVREM(quot, rem, ans->state, l_s);
+  ans->state = quot * DRACO_ANS_P8_PRECISION + rem + (val ? p0 : 0);
 }
 
 static inline int rabs_asc_read(struct AnsDecoder *ans, AnsP8 p0) {
   int val;
-#if ANS_IMPL1
+#if DRACO_ANS_IMPL1
   unsigned l_s;
 #else
   unsigned quot, rem, x, xn;
 #endif
-  const AnsP8 p = ans_p8_precision - p0;
-  if (ans->state < l_base) {
-    ans->state = ans->state * io_base + ans->buf[--ans->buf_offset];
+  const AnsP8 p = DRACO_ANS_P8_PRECISION - p0;
+  if (ans->state < DRACO_ANS_L_BASE) {
+    ans->state = ans->state * DRACO_ANS_IO_BASE + ans->buf[--ans->buf_offset];
   }
-#if ANS_IMPL1
-  val = ans->state % ans_p8_precision < p;
+#if DRACO_ANS_IMPL1
+  val = ans->state % DRACO_ANS_P8_PRECISION < p;
   l_s = val ? p : p0;
-  ans->state = (ans->state / ans_p8_precision) * l_s +
-               ans->state % ans_p8_precision - (!val * p);
+  ans->state = (ans->state / DRACO_ANS_P8_PRECISION) * l_s +
+               ans->state % DRACO_ANS_P8_PRECISION - (!val * p);
 #else
   x = ans->state;
-  quot = x / ans_p8_precision;
-  rem = x % ans_p8_precision;
+  quot = x / DRACO_ANS_P8_PRECISION;
+  rem = x % DRACO_ANS_P8_PRECISION;
   xn = quot * p;
   val = rem >= p0;
   if (UNPREDICTABLE(val)) {
@@ -248,32 +246,34 @@ static inline int rabs_asc_read(struct AnsDecoder *ans, AnsP8 p0) {
 #define rabs_read rabs_desc_read
 #define rabs_write rabs_desc_write
 
-// uABS with normalization
+// uABS with normalization.
 static inline void uabs_write(struct AnsCoder *ans, int val, AnsP8 p0) {
-  AnsP8 p = ans_p8_precision - p0;
+  AnsP8 p = DRACO_ANS_P8_PRECISION - p0;
   const unsigned l_s = val ? p : p0;
-  while (ans->state >= l_base / ans_p8_precision * io_base * l_s) {
-    ans->buf[ans->buf_offset++] = ans->state % io_base;
-    ans->state /= io_base;
+  while (ans->state >=
+         DRACO_ANS_L_BASE / DRACO_ANS_P8_PRECISION * DRACO_ANS_IO_BASE * l_s) {
+    ans->buf[ans->buf_offset++] = ans->state % DRACO_ANS_IO_BASE;
+    ans->state /= DRACO_ANS_IO_BASE;
   }
   if (!val)
-    ans->state = ANS_DIV(ans->state * ans_p8_precision, p0);
+    ans->state = DRACO_ANS_DIV(ans->state * DRACO_ANS_P8_PRECISION, p0);
   else
-    ans->state = ANS_DIV((ans->state + 1) * ans_p8_precision + p - 1, p) - 1;
+    ans->state =
+        DRACO_ANS_DIV((ans->state + 1) * DRACO_ANS_P8_PRECISION + p - 1, p) - 1;
 }
 
 static inline int uabs_read(struct AnsDecoder *ans, AnsP8 p0) {
-  AnsP8 p = ans_p8_precision - p0;
+  AnsP8 p = DRACO_ANS_P8_PRECISION - p0;
   int s;
   // unsigned int xp1;
   unsigned xp, sp;
   unsigned state = ans->state;
-  while (state < l_base && ans->buf_offset > 0) {
-    state = state * io_base + ans->buf[--ans->buf_offset];
+  while (state < DRACO_ANS_L_BASE && ans->buf_offset > 0) {
+    state = state * DRACO_ANS_IO_BASE + ans->buf[--ans->buf_offset];
   }
   sp = state * p;
-  // xp1 = (sp + p) / ans_p8_precision;
-  xp = sp / ans_p8_precision;
+  // xp1 = (sp + p) / DRACO_ANS_P8_PRECISION;
+  xp = sp / DRACO_ANS_P8_PRECISION;
   // s = xp1 - xp;
   s = (sp & 0xFF) >= p0;
   if (UNPREDICTABLE(s))
@@ -286,8 +286,8 @@ static inline int uabs_read(struct AnsDecoder *ans, AnsP8 p0) {
 static inline int uabs_read_bit(struct AnsDecoder *ans) {
   int s;
   unsigned state = ans->state;
-  while (state < l_base && ans->buf_offset > 0) {
-    state = state * io_base + ans->buf[--ans->buf_offset];
+  while (state < DRACO_ANS_L_BASE && ans->buf_offset > 0) {
+    state = state * DRACO_ANS_IO_BASE + ans->buf[--ans->buf_offset];
   }
   s = static_cast<int>(state & 1);
   ans->state = state >> 1;
@@ -317,23 +317,23 @@ static inline int ans_read_init(struct AnsDecoder *const ans,
   } else {
     return 1;
   }
-  ans->state += l_base;
-  if (ans->state >= l_base * io_base)
+  ans->state += DRACO_ANS_L_BASE;
+  if (ans->state >= DRACO_ANS_L_BASE * DRACO_ANS_IO_BASE)
     return 1;
   return 0;
 }
 
 static inline int ans_read_end(struct AnsDecoder *const ans) {
-  return ans->state == l_base;
+  return ans->state == DRACO_ANS_L_BASE;
 }
 
 static inline int ans_reader_has_error(const struct AnsDecoder *const ans) {
-  return ans->state < l_base && ans->buf_offset == 0;
+  return ans->state < DRACO_ANS_L_BASE && ans->buf_offset == 0;
 }
 
 struct rans_sym {
   uint32_t prob;
-  uint32_t cum_prob;  // not-inclusive
+  uint32_t cum_prob;  // not-inclusive.
 };
 
 // Class for performing rANS encoding using a desired number of precision bits.
@@ -356,7 +356,7 @@ class RAnsEncoder {
   inline int write_end() {
     uint32_t state;
     DRACO_DCHECK_GE(ans_.state, l_rans_base);
-    DRACO_DCHECK_LT(ans_.state, l_rans_base * io_base);
+    DRACO_DCHECK_LT(ans_.state, l_rans_base * DRACO_ANS_IO_BASE);
     state = ans_.state - l_rans_base;
     if (state < (1 << 6)) {
       ans_.buf[ans_.buf_offset] = (0x00 << 6) + state;
@@ -376,14 +376,14 @@ class RAnsEncoder {
     }
   }
 
-  // rANS with normalization
-  // sym->prob takes the place of l_s from the paper
-  // rans_precision is m
+  // rANS with normalization.
+  // sym->prob takes the place of l_s from the paper.
+  // rans_precision is m.
   inline void rans_write(const struct rans_sym *const sym) {
     const uint32_t p = sym->prob;
-    while (ans_.state >= l_rans_base / rans_precision * io_base * p) {
-      ans_.buf[ans_.buf_offset++] = ans_.state % io_base;
-      ans_.state /= io_base;
+    while (ans_.state >= l_rans_base / rans_precision * DRACO_ANS_IO_BASE * p) {
+      ans_.buf[ans_.buf_offset++] = ans_.state % DRACO_ANS_IO_BASE;
+      ans_.state /= DRACO_ANS_IO_BASE;
     }
     // TODO(ostava): The division and multiplication should be optimized.
     ans_.state =
@@ -399,7 +399,7 @@ class RAnsEncoder {
 struct rans_dec_sym {
   uint32_t val;
   uint32_t prob;
-  uint32_t cum_prob;  // not-inclusive
+  uint32_t cum_prob;  // not-inclusive.
 };
 
 // Class for performing rANS decoding using a desired number of precision bits.
@@ -439,7 +439,7 @@ class RAnsDecoder {
       return 1;
     }
     ans_.state += l_rans_base;
-    if (ans_.state >= l_rans_base * io_base)
+    if (ans_.state >= l_rans_base * DRACO_ANS_IO_BASE)
       return 1;
     return 0;
   }
@@ -455,7 +455,7 @@ class RAnsDecoder {
     unsigned quo;
     struct rans_dec_sym sym;
     while (ans_.state < l_rans_base && ans_.buf_offset > 0) {
-      ans_.state = ans_.state * io_base + ans_.buf[--ans_.buf_offset];
+      ans_.state = ans_.state * DRACO_ANS_IO_BASE + ans_.buf[--ans_.buf_offset];
     }
     // |rans_precision| is a power of two compile time constant, and the below
     // division and modulo are going to be optimized by the compiler.
@@ -507,7 +507,10 @@ class RAnsDecoder {
   AnsDecoder ans_;
 };
 
-#undef ANS_DIVREM
+#undef DRACO_ANS_DIVREM
+#undef DRACO_ANS_P8_PRECISION
+#undef DRACO_ANS_L_BASE
+#undef DRACO_ANS_IO_BASE
 
 }  // namespace draco
 

src/draco/compression/entropy/rans_symbol_coding.h

@@ -40,8 +40,8 @@ constexpr int ComputeRAnsPrecisionFromUniqueSymbolsBitLength(
 
 // Compute approximate frequency table size needed for storing the provided
 // symbols.
-static int64_t ApproximateRAnsFrequencyTableBits(int32_t max_value,
-                                                 int num_unique_symbols) {
+static inline int64_t ApproximateRAnsFrequencyTableBits(
+    int32_t max_value, int num_unique_symbols) {
   // Approximate number of bits for storing zero frequency entries using the
   // run length encoding (with max length of 64).
   const int64_t table_zero_frequency_bits =

src/draco/compression/expert_encode.cc

@@ -16,8 +16,10 @@
 
 #include "draco/compression/mesh/mesh_edgebreaker_encoder.h"
 #include "draco/compression/mesh/mesh_sequential_encoder.h"
+#ifdef DRACO_POINT_CLOUD_COMPRESSION_SUPPORTED
 #include "draco/compression/point_cloud/point_cloud_kd_tree_encoder.h"
 #include "draco/compression/point_cloud/point_cloud_sequential_encoder.h"
+#endif
 
 namespace draco {
 
@@ -38,6 +40,7 @@ Status ExpertEncoder::EncodeToBuffer(EncoderBuffer *out_buffer) {
 
 Status ExpertEncoder::EncodePointCloudToBuffer(const PointCloud &pc,
                                                EncoderBuffer *out_buffer) {
+#ifdef DRACO_POINT_CLOUD_COMPRESSION_SUPPORTED
   std::unique_ptr<PointCloudEncoder> encoder;
   const int encoding_method = options().GetGlobalInt("encoding_method", -1);
 
@@ -87,6 +90,9 @@ Status ExpertEncoder::EncodePointCloudToBuffer(const PointCloud &pc,
   set_num_encoded_points(encoder->num_encoded_points());
   set_num_encoded_faces(0);
   return OkStatus();
+#else
+  return Status(Status::ERROR, "Point cloud encoding is not enabled.");
+#endif
 }
 
 Status ExpertEncoder::EncodeMeshToBuffer(const Mesh &m,

src/draco/compression/mesh/mesh_edgebreaker_encoder.cc

@@ -31,9 +31,7 @@ bool MeshEdgebreakerEncoder::InitializeEncoder() {
   impl_ = nullptr;
   // For tiny meshes it's usually better to use the basic edgebreaker as the
   // overhead of the predictive one may turn out to be too big.
-  // TODO(ostava): For now we have a set limit for forcing the basic edgebreaker
-  // based on the number of faces, but a more complex heuristic may be used if
-  // needed.
+  // TODO(b/111065939): Check if this can be improved.
   const bool is_tiny_mesh = mesh()->num_faces() < 1000;
 
   int selected_edgebreaker_method =
@@ -81,7 +79,7 @@ bool MeshEdgebreakerEncoder::EncodeAttributesEncoderIdentifier(
   return true;
 }
 
-bool MeshEdgebreakerEncoder::EncodeConnectivity() {
+Status MeshEdgebreakerEncoder::EncodeConnectivity() {
   return impl_->EncodeConnectivity();
 }
 

src/draco/compression/mesh/mesh_edgebreaker_encoder.h

@@ -51,7 +51,7 @@ class MeshEdgebreakerEncoder : public MeshEncoder {
 
  protected:
   bool InitializeEncoder() override;
-  bool EncodeConnectivity() override;
+  Status EncodeConnectivity() override;
   bool GenerateAttributesEncoder(int32_t att_id) override;
   bool EncodeAttributesEncoderIdentifier(int32_t att_encoder_id) override;
   void ComputeNumberOfEncodedPoints() override;

src/draco/compression/mesh/mesh_edgebreaker_encoder_impl.cc

@@ -263,7 +263,7 @@ bool MeshEdgebreakerEncoderImpl<TraversalEncoder>::
 }
 
 template <class TraversalEncoder>
-bool MeshEdgebreakerEncoderImpl<TraversalEncoder>::EncodeConnectivity() {
+Status MeshEdgebreakerEncoderImpl<TraversalEncoder>::EncodeConnectivity() {
   // To encode the mesh, we need face connectivity data stored in a corner
   // table. To compute the connectivity we must use indices associated with
   // POSITION attribute, because they define which edges can be connected
@@ -279,7 +279,7 @@ bool MeshEdgebreakerEncoderImpl<TraversalEncoder>::EncodeConnectivity() {
       corner_table_->num_faces() == corner_table_->NumDegeneratedFaces()) {
     // Failed to construct the corner table.
     // TODO(ostava): Add better error reporting.
-    return false;
+    return Status(Status::ERROR, "All triangles are degenerate.");
   }
 
   traversal_encoder_.Init(this);
@@ -317,10 +317,10 @@ bool MeshEdgebreakerEncoderImpl<TraversalEncoder>::EncodeConnectivity() {
   pos_encoding_data_.num_values = 0;
 
   if (!FindHoles())
-    return false;
+    return Status(Status::ERROR, "Failed to process mesh holes.");
 
   if (!InitAttributeData())
-    return false;
+    return Status(Status::ERROR, "Failed to initialize attribute data.");
 
   const uint8_t num_attribute_data =
       static_cast<uint8_t>(attribute_data_.size());
@@ -376,7 +376,7 @@ bool MeshEdgebreakerEncoderImpl<TraversalEncoder>::EncodeConnectivity() {
       if (opp_face_id != kInvalidFaceIndex &&
           !visited_faces_[opp_face_id.value()]) {
         if (!EncodeConnectivityFromCorner(opp_id))
-          return false;
+          return Status(Status::ERROR, "Failed to encode mesh component.");
       }
     } else {
       // Boundary configuration. We start on a boundary rather than on a face.
@@ -385,7 +385,7 @@ bool MeshEdgebreakerEncoderImpl<TraversalEncoder>::EncodeConnectivity() {
       // Start processing the face opposite to the boundary edge (the face
       // containing the start_corner).
       if (!EncodeConnectivityFromCorner(start_corner))
-        return false;
+        return Status(Status::ERROR, "Failed to encode mesh component.");
     }
   }
   // Reverse the order of connectivity corners to match the order in which
@@ -417,11 +417,11 @@ bool MeshEdgebreakerEncoderImpl<TraversalEncoder>::EncodeConnectivity() {
 
   // Append the traversal buffer.
   if (!EncodeSplitData())
-    return false;
+    return Status(Status::ERROR, "Failed to encode split data.");
   encoder_->buffer()->Encode(traversal_encoder_.buffer().data(),
                              traversal_encoder_.buffer().size());
 
-  return true;
+  return OkStatus();
 }
 
 template <class TraversalEncoder>

src/draco/compression/mesh/mesh_edgebreaker_encoder_impl.h

@@ -45,7 +45,7 @@ class MeshEdgebreakerEncoderImpl : public MeshEdgebreakerEncoderImplInterface {
 
   bool GenerateAttributesEncoder(int32_t att_id) override;
   bool EncodeAttributesEncoderIdentifier(int32_t att_encoder_id) override;
-  bool EncodeConnectivity() override;
+  Status EncodeConnectivity() override;
 
   const CornerTable *GetCornerTable() const override {
     return corner_table_.get();

src/draco/compression/mesh/mesh_edgebreaker_encoder_impl_interface.h

@@ -41,7 +41,7 @@ class MeshEdgebreakerEncoderImplInterface {
       int att_id) const = 0;
   virtual bool GenerateAttributesEncoder(int32_t att_id) = 0;
   virtual bool EncodeAttributesEncoderIdentifier(int32_t att_encoder_id) = 0;
-  virtual bool EncodeConnectivity() = 0;
+  virtual Status EncodeConnectivity() = 0;
 
   // Returns corner table of the encoded mesh.
   virtual const CornerTable *GetCornerTable() const = 0;

src/draco/compression/mesh/mesh_encoder.cc

@@ -23,12 +23,11 @@ void MeshEncoder::SetMesh(const Mesh &m) {
   SetPointCloud(m);
 }
 
-bool MeshEncoder::EncodeGeometryData() {
-  if (!EncodeConnectivity())
-    return false;
+Status MeshEncoder::EncodeGeometryData() {
+  DRACO_RETURN_IF_ERROR(EncodeConnectivity());
   if (options()->GetGlobalBool("store_number_of_encoded_faces", false))
     ComputeNumberOfEncodedFaces();
-  return true;
+  return OkStatus();
 }
 
 }  // namespace draco

src/draco/compression/mesh/mesh_encoder.h

@@ -61,10 +61,10 @@ class MeshEncoder : public PointCloudEncoder {
   const Mesh *mesh() const { return mesh_; }
 
  protected:
-  bool EncodeGeometryData() override;
+  Status EncodeGeometryData() override;
 
   // Needs to be implemented by the derived classes.
-  virtual bool EncodeConnectivity() = 0;
+  virtual Status EncodeConnectivity() = 0;
 
   // Computes and sets the num_encoded_faces_ for the encoder.
   virtual void ComputeNumberOfEncodedFaces() = 0;

src/draco/compression/mesh/mesh_encoder_test.cc

@@ -87,7 +87,7 @@ TEST_P(MeshEncoderTest, EncodeGoldenMesh) {
   }
 }
 
-INSTANTIATE_TEST_CASE_P(MeshEncoderTests, MeshEncoderTest,
+INSTANTIATE_TEST_SUITE_P(MeshEncoderTests, MeshEncoderTest,
                          ::testing::Values("sequential", "edgebreaker"));
 
 }  // namespace draco

src/draco/compression/mesh/mesh_sequential_encoder.cc

@@ -25,7 +25,7 @@ namespace draco {
 
 MeshSequentialEncoder::MeshSequentialEncoder() {}
 
-bool MeshSequentialEncoder::EncodeConnectivity() {
+Status MeshSequentialEncoder::EncodeConnectivity() {
   // Serialize indices.
   const uint32_t num_faces = mesh()->num_faces();
   EncodeVarint(num_faces, buffer());
@@ -38,7 +38,7 @@ bool MeshSequentialEncoder::EncodeConnectivity() {
     // 0 = Encode compressed indices.
     buffer()->Encode(static_cast<uint8_t>(0));
     if (!CompressAndEncodeIndices())
-      return false;
+      return Status(Status::ERROR, "Failed to compress connectivity.");
   } else {
     // 1 = Encode indices directly.
     buffer()->Encode(static_cast<uint8_t>(1));
@@ -77,7 +77,7 @@ bool MeshSequentialEncoder::EncodeConnectivity() {
       }
     }
   }
-  return true;
+  return OkStatus();
 }
 
 bool MeshSequentialEncoder::GenerateAttributesEncoder(int32_t att_id) {

src/draco/compression/mesh/mesh_sequential_encoder.h

@@ -42,7 +42,7 @@ class MeshSequentialEncoder : public MeshEncoder {
   }
 
  protected:
-  bool EncodeConnectivity() override;
+  Status EncodeConnectivity() override;
   bool GenerateAttributesEncoder(int32_t att_id) override;
   void ComputeNumberOfEncodedPoints() override;
   void ComputeNumberOfEncodedFaces() override;

src/draco/compression/point_cloud/point_cloud_encoder.cc

@@ -43,8 +43,7 @@ Status PointCloudEncoder::Encode(const EncoderOptions &options,
     return Status(Status::ERROR, "Failed to initialize encoder.");
   if (!EncodeEncoderData())
     return Status(Status::ERROR, "Failed to encode internal data.");
-  if (!EncodeGeometryData())
-    return Status(Status::ERROR, "Failed to encode geometry data.");
+  DRACO_RETURN_IF_ERROR(EncodeGeometryData());
   if (!EncodePointAttributes())
     return Status(Status::ERROR, "Failed to encode point attributes.");
   if (options.GetGlobalBool("store_number_of_encoded_points", false))

src/draco/compression/point_cloud/point_cloud_encoder.h

@@ -85,7 +85,7 @@ class PointCloudEncoder {
   virtual bool EncodeEncoderData() { return true; }
 
   // Encodes any global geometry data (such as the number of points).
-  virtual bool EncodeGeometryData() { return true; }
+  virtual Status EncodeGeometryData() { return OkStatus(); }
 
   // encode all attribute values. The attribute encoders are sorted to resolve
   // any attribute dependencies and all the encoded data is stored into the

src/draco/compression/point_cloud/point_cloud_kd_tree_encoder.cc

@@ -17,10 +17,10 @@
 
 namespace draco {
 
-bool PointCloudKdTreeEncoder::EncodeGeometryData() {
+Status PointCloudKdTreeEncoder::EncodeGeometryData() {
   const int32_t num_points = point_cloud()->num_points();
   buffer()->Encode(num_points);
-  return true;
+  return OkStatus();
 }
 
 bool PointCloudKdTreeEncoder::GenerateAttributesEncoder(int32_t att_id) {

src/draco/compression/point_cloud/point_cloud_kd_tree_encoder.h

@@ -35,7 +35,7 @@ class PointCloudKdTreeEncoder : public PointCloudEncoder {
   }
 
  protected:
-  bool EncodeGeometryData() override;
+  Status EncodeGeometryData() override;
   bool GenerateAttributesEncoder(int32_t att_id) override;
   void ComputeNumberOfEncodedPoints() override;
 };

src/draco/compression/point_cloud/point_cloud_sequential_encoder.cc

@@ -19,10 +19,10 @@
 
 namespace draco {
 
-bool PointCloudSequentialEncoder::EncodeGeometryData() {
+Status PointCloudSequentialEncoder::EncodeGeometryData() {
   const int32_t num_points = point_cloud()->num_points();
   buffer()->Encode(num_points);
-  return true;
+  return OkStatus();
 }
 
 bool PointCloudSequentialEncoder::GenerateAttributesEncoder(int32_t att_id) {

src/draco/compression/point_cloud/point_cloud_sequential_encoder.h

@@ -33,7 +33,7 @@ class PointCloudSequentialEncoder : public PointCloudEncoder {
   }
 
  protected:
-  bool EncodeGeometryData() override;
+  Status EncodeGeometryData() override;
   bool GenerateAttributesEncoder(int32_t att_id) override;
   void ComputeNumberOfEncodedPoints() override;
 };

src/draco/core/data_buffer.cc

@@ -13,6 +13,7 @@
 // limitations under the License.
 //
 #include "draco/core/data_buffer.h"
+#include <algorithm>
 
 namespace draco {
 

src/draco/core/draco_test_utils.h

@@ -53,6 +53,11 @@ inline std::unique_ptr<Mesh> ReadMeshFromTestFile(const std::string &file_name,
   const std::string path = GetTestFileFullPath(file_name);
   return ReadMeshFromFile(path, use_metadata).value();
 }
+inline std::unique_ptr<Mesh> ReadMeshFromTestFile(const std::string &file_name,
+                                                  const Options &options) {
+  const std::string path = GetTestFileFullPath(file_name);
+  return ReadMeshFromFile(path, options).value();
+}
 
 inline std::unique_ptr<PointCloud> ReadPointCloudFromTestFile(
     const std::string &file_name) {

src/draco/core/draco_types.cc

@@ -41,4 +41,21 @@ int32_t DataTypeLength(DataType dt) {
   }
 }
 
+bool IsDataTypeIntegral(DataType dt) {
+  switch (dt) {
+    case DT_INT8:
+    case DT_UINT8:
+    case DT_INT16:
+    case DT_UINT16:
+    case DT_INT32:
+    case DT_UINT32:
+    case DT_INT64:
+    case DT_UINT64:
+    case DT_BOOL:
+      return true;
+    default:
+      return false;
+  }
+}
+
 }  // namespace draco

src/draco/core/draco_types.h

@@ -41,6 +41,11 @@ enum DataType {
 
 int32_t DataTypeLength(DataType dt);
 
+// Equivalent to std::is_integral for draco::DataType. Returns true for all
+// signed and unsigned integer types (including DT_BOOL). Returns false
+// otherwise.
+bool IsDataTypeIntegral(DataType dt);
+
 }  // namespace draco
 
 #endif  // DRACO_CORE_DRACO_TYPES_H_

src/draco/core/draco_version.h

@@ -18,7 +18,7 @@
 namespace draco {
 
 // Draco version is comprised of <major>.<minor>.<revision>.
-static const char kDracoVersion[] = "1.3.4";
+static const char kDracoVersion[] = "1.3.5";
 
 const char *Version() { return kDracoVersion; }
 

src/draco/core/macros.h

@@ -32,12 +32,27 @@
 #include <iostream>
 namespace draco {
 
+#ifndef DISALLOW_COPY_AND_ASSIGN
 #define DISALLOW_COPY_AND_ASSIGN(TypeName) \
   TypeName(const TypeName &) = delete;     \
   void operator=(const TypeName &) = delete;
+#endif
 
 #ifndef FALLTHROUGH_INTENDED
-#define FALLTHROUGH_INTENDED void(0);
+#if defined(__clang__) && defined(__has_warning)
+#if __has_feature(cxx_attributes) && __has_warning("-Wimplicit-fallthrough")
+#define FALLTHROUGH_INTENDED [[clang::fallthrough]]
+#endif
+#elif defined(__GNUC__) && __GNUC__ >= 7
+#define FALLTHROUGH_INTENDED [[gnu::fallthrough]]
+#endif
+
+// If FALLTHROUGH_INTENDED is still not defined, define it.
+#ifndef FALLTHROUGH_INTENDED
+#define FALLTHROUGH_INTENDED \
+  do {                       \
+  } while (0)
+#endif
 #endif
 
 #ifndef LOG

src/draco/core/math_utils.h

@@ -17,6 +17,8 @@
 
 #include <inttypes.h>
 
+#include "draco/core/vector_d.h"
+
 #define DRACO_INCREMENT_MOD(I, M) (((I) == ((M)-1)) ? 0 : ((I) + 1))
 
 // Returns floor(sqrt(x)) where x is an integer number. The main intend of this

src/draco/core/math_utils_test.cc

@@ -1,9 +1,12 @@
 #include "draco/core/math_utils.h"
 
+#include <cmath>
 #include <random>
 
 #include "draco/core/draco_test_base.h"
 
+using draco::Vector3f;
+
 TEST(MathUtils, Mod) { EXPECT_EQ(DRACO_INCREMENT_MOD(1, 1 << 1), 0); }
 
 TEST(MathUtils, IntSqrt) {

src/draco/core/options.cc

@@ -16,11 +16,17 @@
 
 #include <cstdlib>
 #include <string>
+#include <utility>
 
 namespace draco {
 
 Options::Options() {}
 
+void Options::MergeAndReplace(const Options &other_options) {
+  for (const auto &item : other_options.options_)
+    options_[item.first] = item.second;
+}
+
 void Options::SetInt(const std::string &name, int val) {
   options_[name] = std::to_string(val);
 }

src/draco/core/options.h

@@ -28,6 +28,11 @@ namespace draco {
 class Options {
  public:
   Options();
+
+  // Merges |other_options| on top of the existing options of this instance
+  // replacing all entries that are present in both options instances.
+  void MergeAndReplace(const Options &other_options);
+
   void SetInt(const std::string &name, int val);
   void SetFloat(const std::string &name, float val);
   void SetBool(const std::string &name, bool val);

src/draco/core/status_or.h

@@ -12,8 +12,8 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 //
-#ifndef DRACO_CORE_STATUSOR_H_
-#define DRACO_CORE_STATUSOR_H_
+#ifndef DRACO_CORE_STATUS_OR_H_
+#define DRACO_CORE_STATUS_OR_H_
 
 #include "draco/core/macros.h"
 #include "draco/core/status.h"
@@ -78,4 +78,4 @@ class StatusOr {
 
 }  // namespace draco
 
-#endif  // DRACO_CORE_STATUSOR_H_
+#endif  // DRACO_CORE_STATUS_OR_H_

src/draco/core/vector_d.h

@@ -24,16 +24,20 @@
 
 namespace draco {
 // D-dimensional vector class with basic operations.
-template <class CoeffT, int dimension_t>
+template <class ScalarT, int dimension_t>
 class VectorD {
  public:
-  typedef VectorD<CoeffT, dimension_t> Self;
-  typedef CoeffT CoefficientType;
   static constexpr int dimension = dimension_t;
 
+  typedef ScalarT Scalar;
+  typedef VectorD<Scalar, dimension_t> Self;
+
+  // TODO(hemmer): Deprecate.
+  typedef ScalarT CoefficientType;
+
   VectorD() {
-    for (int i = 0; i < dimension_t; ++i)
-      (*this)[i] = CoeffT(0);
+    for (int i = 0; i < dimension; ++i)
+      (*this)[i] = Scalar(0);
   }
 
   // The following constructor does not compile in opt mode, which for now led
@@ -42,58 +46,75 @@ class VectorD {
   // template <typename... Args>
   // explicit VectorD(Args... args) : v_({args...}) {}
 
-  VectorD(const CoeffT &c0, const CoeffT &c1) : v_({{c0, c1}}) {
-    DRACO_DCHECK_EQ(dimension_t, 2);
+  VectorD(const Scalar &c0, const Scalar &c1) : v_({{c0, c1}}) {
+    DRACO_DCHECK_EQ(dimension, 2);
     v_[0] = c0;
     v_[1] = c1;
   }
 
-  VectorD(const CoeffT &c0, const CoeffT &c1, const CoeffT &c2)
+  VectorD(const Scalar &c0, const Scalar &c1, const Scalar &c2)
       : v_({{c0, c1, c2}}) {
-    DRACO_DCHECK_EQ(dimension_t, 3);
+    DRACO_DCHECK_EQ(dimension, 3);
   }
 
-  VectorD(const CoeffT &c0, const CoeffT &c1, const CoeffT &c2,
-          const CoeffT &c3)
+  VectorD(const Scalar &c0, const Scalar &c1, const Scalar &c2,
+          const Scalar &c3)
       : v_({{c0, c1, c2, c3}}) {
-    DRACO_DCHECK_EQ(dimension_t, 4);
+    DRACO_DCHECK_EQ(dimension, 4);
   }
 
-  VectorD(const CoeffT &c0, const CoeffT &c1, const CoeffT &c2,
-          const CoeffT &c3, const CoeffT &c4)
+  VectorD(const Scalar &c0, const Scalar &c1, const Scalar &c2,
+          const Scalar &c3, const Scalar &c4)
       : v_({{c0, c1, c2, c3, c4}}) {
-    DRACO_DCHECK_EQ(dimension_t, 5);
+    DRACO_DCHECK_EQ(dimension, 5);
   }
 
-  VectorD(const CoeffT &c0, const CoeffT &c1, const CoeffT &c2,
-          const CoeffT &c3, const CoeffT &c4, const CoeffT &c5)
+  VectorD(const Scalar &c0, const Scalar &c1, const Scalar &c2,
+          const Scalar &c3, const Scalar &c4, const Scalar &c5)
       : v_({{c0, c1, c2, c3, c4, c5}}) {
-    DRACO_DCHECK_EQ(dimension_t, 6);
+    DRACO_DCHECK_EQ(dimension, 6);
   }
 
-  VectorD(const CoeffT &c0, const CoeffT &c1, const CoeffT &c2,
-          const CoeffT &c3, const CoeffT &c4, const CoeffT &c5,
-          const CoeffT &c6)
+  VectorD(const Scalar &c0, const Scalar &c1, const Scalar &c2,
+          const Scalar &c3, const Scalar &c4, const Scalar &c5,
+          const Scalar &c6)
       : v_({{c0, c1, c2, c3, c4, c5, c6}}) {
-    DRACO_DCHECK_EQ(dimension_t, 7);
+    DRACO_DCHECK_EQ(dimension, 7);
   }
 
   VectorD(const Self &o) {
-    for (int i = 0; i < dimension_t; ++i)
+    for (int i = 0; i < dimension; ++i)
       (*this)[i] = o[i];
   }
 
-  CoeffT &operator[](int i) { return v_[i]; }
-  const CoeffT &operator[](int i) const { return v_[i]; }
+  // Constructs the vector from another vector with a different data type or a
+  // different number of components. If the |src_vector| has more components
+  // than |this| vector, the excess components are truncated. If the
+  // |src_vector| has fewer components than |this| vector, the remaining
+  // components are padded with 0.
+  // Note that the constructor is intentionally explicit to avoid accidental
+  // conversions between different vector types.
+  template <class OtherScalarT, int other_dimension_t>
+  explicit VectorD(const VectorD<OtherScalarT, other_dimension_t> &src_vector) {
+    for (int i = 0; i < dimension; ++i) {
+      if (i < other_dimension_t)
+        v_[i] = Scalar(src_vector[i]);
+      else
+        v_[i] = Scalar(0);
+    }
+  }
+
+  Scalar &operator[](int i) { return v_[i]; }
+  const Scalar &operator[](int i) const { return v_[i]; }
   // TODO(hemmer): remove.
   // Similar to interface of Eigen library.
-  CoeffT &operator()(int i) { return v_[i]; }
-  const CoeffT &operator()(int i) const { return v_[i]; }
+  Scalar &operator()(int i) { return v_[i]; }
+  const Scalar &operator()(int i) const { return v_[i]; }
 
   // Unary operators.
   Self operator-() const {
     Self ret;
-    for (int i = 0; i < dimension_t; ++i) {
+    for (int i = 0; i < dimension; ++i) {
       ret[i] = -(*this)[i];
     }
     return ret;
@@ -102,7 +123,7 @@ class VectorD {
   // Binary operators.
   Self operator+(const Self &o) const {
     Self ret;
-    for (int i = 0; i < dimension_t; ++i) {
+    for (int i = 0; i < dimension; ++i) {
       ret[i] = (*this)[i] + o[i];
     }
     return ret;
@@ -110,30 +131,46 @@ class VectorD {
 
   Self operator-(const Self &o) const {
     Self ret;
-    for (int i = 0; i < dimension_t; ++i) {
+    for (int i = 0; i < dimension; ++i) {
       ret[i] = (*this)[i] - o[i];
     }
     return ret;
   }
 
-  Self operator*(const CoeffT &o) const {
+  Self operator*(const Scalar &o) const {
     Self ret;
-    for (int i = 0; i < dimension_t; ++i) {
+    for (int i = 0; i < dimension; ++i) {
       ret[i] = (*this)[i] * o;
     }
     return ret;
   }
 
-  Self operator/(const CoeffT &o) const {
+  Self operator/(const Scalar &o) const {
     Self ret;
-    for (int i = 0; i < dimension_t; ++i) {
+    for (int i = 0; i < dimension; ++i) {
       ret[i] = (*this)[i] / o;
     }
     return ret;
   }
 
+  Self operator+(const Scalar &o) const {
+    Self ret;
+    for (int i = 0; i < dimension; ++i) {
+      ret[i] = (*this)[i] + o;
+    }
+    return ret;
+  }
+
+  Self operator-(const Scalar &o) const {
+    Self ret;
+    for (int i = 0; i < dimension; ++i) {
+      ret[i] = (*this)[i] - o;
+    }
+    return ret;
+  }
+
   bool operator==(const Self &o) const {
-    for (int i = 0; i < dimension_t; ++i) {
+    for (int i = 0; i < dimension; ++i) {
       if ((*this)[i] != o[i])
         return false;
     }
@@ -143,67 +180,75 @@ class VectorD {
   bool operator!=(const Self &x) const { return !((*this) == x); }
 
   bool operator<(const Self &x) const {
-    for (int i = 0; i < dimension_t - 1; ++i) {
+    for (int i = 0; i < dimension - 1; ++i) {
       if (v_[i] < x.v_[i])
         return true;
       if (v_[i] > x.v_[i])
         return false;
     }
     // Only one check needed for the last dimension.
-    if (v_[dimension_t - 1] < x.v_[dimension_t - 1])
+    if (v_[dimension - 1] < x.v_[dimension - 1])
       return true;
     return false;
   }
 
   // Functions.
-  CoeffT SquaredNorm() const { return this->Dot(*this); }
+  Scalar SquaredNorm() const { return this->Dot(*this); }
 
   // Computes L1, the sum of absolute values of all entries.
-  CoeffT AbsSum() const {
-    CoeffT result(0);
-    for (int i = 0; i < dimension_t; ++i) {
+  Scalar AbsSum() const {
+    Scalar result(0);
+    for (int i = 0; i < dimension; ++i) {
       result += std::abs(v_[i]);
     }
     return result;
   }
 
-  CoeffT Dot(const Self &o) const {
-    CoeffT ret(0);
-    for (int i = 0; i < dimension_t; ++i) {
+  Scalar Dot(const Self &o) const {
+    Scalar ret(0);
+    for (int i = 0; i < dimension; ++i) {
       ret += (*this)[i] * o[i];
     }
     return ret;
   }
 
   void Normalize() {
-    const CoeffT magnitude = std::sqrt(this->SquaredNorm());
+    const Scalar magnitude = std::sqrt(this->SquaredNorm());
     if (magnitude == 0) {
       return;
     }
-    for (int i = 0; i < dimension_t; ++i) {
+    for (int i = 0; i < dimension; ++i) {
       (*this)[i] /= magnitude;
     }
   }
 
-  CoeffT *data() { return &(v_[0]); }
+  const Scalar &MaxCoeff() const {
+    return *std::max_element(v_.begin(), v_.end());
+  }
+
+  const Scalar &MinCoeff() const {
+    return *std::min_element(v_.begin(), v_.end());
+  }
+
+  Scalar *data() { return &(v_[0]); }
 
  private:
-  std::array<CoeffT, dimension_t> v_;
+  std::array<Scalar, dimension> v_;
 };
 
 // Scalar multiplication from the other side too.
-template <class CoeffT, int dimension_t>
-VectorD<CoeffT, dimension_t> operator*(const CoeffT &o,
-                                       const VectorD<CoeffT, dimension_t> &v) {
+template <class ScalarT, int dimension_t>
+VectorD<ScalarT, dimension_t> operator*(
+    const ScalarT &o, const VectorD<ScalarT, dimension_t> &v) {
   return v * o;
 }
 
 // Calculates the squared distance between two points.
-template <class CoeffT, int dimension_t>
-CoeffT SquaredDistance(const VectorD<CoeffT, dimension_t> &v1,
-                       const VectorD<CoeffT, dimension_t> &v2) {
-  CoeffT difference;
-  CoeffT squared_distance = 0;
+template <class ScalarT, int dimension_t>
+ScalarT SquaredDistance(const VectorD<ScalarT, dimension_t> &v1,
+                        const VectorD<ScalarT, dimension_t> &v2) {
+  ScalarT difference;
+  ScalarT squared_distance = 0;
   // Check each index separately so difference is never negative and underflow
   // is avoided for unsigned types.
   for (int i = 0; i < dimension_t; ++i) {
@@ -218,22 +263,22 @@ CoeffT SquaredDistance(const VectorD<CoeffT, dimension_t> &v1,
 }
 
 // Global function computing the cross product of two 3D vectors.
-template <class CoeffT>
-VectorD<CoeffT, 3> CrossProduct(const VectorD<CoeffT, 3> &u,
-                                const VectorD<CoeffT, 3> &v) {
+template <class ScalarT>
+VectorD<ScalarT, 3> CrossProduct(const VectorD<ScalarT, 3> &u,
+                                 const VectorD<ScalarT, 3> &v) {
   // Preventing accidental use with uint32_t and the like.
-  static_assert(std::is_signed<CoeffT>::value,
-                "CoeffT must be a signed type. ");
-  VectorD<CoeffT, 3> r;
+  static_assert(std::is_signed<ScalarT>::value,
+                "ScalarT must be a signed type. ");
+  VectorD<ScalarT, 3> r;
   r[0] = (u[1] * v[2]) - (u[2] * v[1]);
   r[1] = (u[2] * v[0]) - (u[0] * v[2]);
   r[2] = (u[0] * v[1]) - (u[1] * v[0]);
   return r;
 }
 
-template <class CoeffT, int dimension_t>
+template <class ScalarT, int dimension_t>
 inline std::ostream &operator<<(
-    std::ostream &out, const draco::VectorD<CoeffT, dimension_t> &vec) {
+    std::ostream &out, const draco::VectorD<ScalarT, dimension_t> &vec) {
   for (int i = 0; i < dimension_t - 1; ++i) {
     out << vec[i] << " ";
   }

src/draco/core/vector_d_test.cc

@@ -32,20 +32,17 @@ typedef draco::Vector5ui Vector5ui;
 typedef draco::VectorD<int32_t, 3> Vector3i;
 typedef draco::VectorD<int32_t, 4> Vector4i;
 
-class VectorDTest : public ::testing::Test {
- protected:
-  template <class CoeffT, int dimension_t>
-  void TestSquaredDistance(const draco::VectorD<CoeffT, dimension_t> v1,
+template <class CoeffT, int dimension_t>
+void TestSquaredDistance(const draco::VectorD<CoeffT, dimension_t> v1,
                          const draco::VectorD<CoeffT, dimension_t> v2,
                          const CoeffT result) {
   CoeffT squared_distance = SquaredDistance(v1, v2);
   ASSERT_EQ(squared_distance, result);
   squared_distance = SquaredDistance(v2, v1);
   ASSERT_EQ(squared_distance, result);
-  }
-};
+}
 
-TEST_F(VectorDTest, TestOperators) {
+TEST(VectorDTest, TestOperators) {
   {
     const Vector3f v;
     ASSERT_EQ(v[0], 0);
@@ -58,10 +55,8 @@ TEST_F(VectorDTest, TestOperators) {
   ASSERT_EQ(v[2], 3);
 
   Vector3f w = v;
-  bool comp = (v == w);
-  ASSERT_TRUE(comp);
-  comp = (v != w);
-  ASSERT_TRUE(!comp);
+  ASSERT_TRUE(v == w);
+  ASSERT_FALSE(v != w);
   ASSERT_EQ(w[0], 1);
   ASSERT_EQ(w[1], 2);
   ASSERT_EQ(w[2], 3);
@@ -81,10 +76,15 @@ TEST_F(VectorDTest, TestOperators) {
   ASSERT_EQ(w[1], 2);
   ASSERT_EQ(w[2], 3);
 
+  // Scalar multiplication from left and right.
   w = v * 2.f;
   ASSERT_EQ(w[0], 2);
   ASSERT_EQ(w[1], 4);
   ASSERT_EQ(w[2], 6);
+  w = 2.f * v;
+  ASSERT_EQ(w[0], 2);
+  ASSERT_EQ(w[1], 4);
+  ASSERT_EQ(w[2], 6);
 
   ASSERT_EQ(v.SquaredNorm(), 14);
   ASSERT_EQ(v.Dot(v), 14);
@@ -109,7 +109,7 @@ TEST_F(VectorDTest, TestOperators) {
   }
 }
 
-TEST_F(VectorDTest, TestSquaredDistance) {
+TEST(VectorDTest, TestSquaredDistance) {
   // Test Vector2f: float, 2D.
   Vector2f v1_2f(5.5, 10.5);
   Vector2f v2_2f(3.5, 15.5);
@@ -158,7 +158,8 @@ TEST_F(VectorDTest, TestSquaredDistance) {
   result_ui = 158;
   TestSquaredDistance(v1_5ui, v2_5ui, result_ui);
 }
-TEST_F(VectorDTest, TestCrossProduct3D) {
+
+TEST(VectorDTest, TestCrossProduct3D) {
   const Vector3i e1(1, 0, 0);
   const Vector3i e2(0, 1, 0);
   const Vector3i e3(0, 0, 1);
@@ -181,7 +182,7 @@ TEST_F(VectorDTest, TestCrossProduct3D) {
   ASSERT_EQ(0, v2.Dot(orth));
 }
 
-TEST_F(VectorDTest, TestAbsSum) {
+TEST(VectorDTest, TestAbsSum) {
   // Testing const of function and zero.
   const Vector3i v(0, 0, 0);
   ASSERT_EQ(v.AbsSum(), 0);
@@ -194,7 +195,18 @@ TEST_F(VectorDTest, TestAbsSum) {
   ASSERT_EQ(Vector4i(-2, 4, -8, 3).AbsSum(), 17);
 }
 
-TEST_F(VectorDTest, TestOstream) {
+TEST(VectorDTest, TestMinMaxCoeff) {
+  // Test verifies that MinCoeff() and MaxCoeff() functions work as intended.
+  const Vector4i vi(-10, 5, 2, 3);
+  ASSERT_EQ(vi.MinCoeff(), -10);
+  ASSERT_EQ(vi.MaxCoeff(), 5);
+
+  const Vector3f vf(6.f, 1000.f, -101.f);
+  ASSERT_EQ(vf.MinCoeff(), -101.f);
+  ASSERT_EQ(vf.MaxCoeff(), 1000.f);
+}
+
+TEST(VectorDTest, TestOstream) {
   // Tests that the vector can be stored in a provided std::ostream.
   const draco::VectorD<int64_t, 3> vector(1, 2, 3);
   std::stringstream str;
@@ -202,4 +214,22 @@ TEST_F(VectorDTest, TestOstream) {
   ASSERT_EQ(str.str(), "1 2 3 ");
 }
 
+TEST(VectorDTest, TestConvertConstructor) {
+  // Tests that a vector can be constructed from another vector with a different
+  // type.
+  const draco::VectorD<int64_t, 3> vector(1, 2, 3);
+
+  const draco::VectorD<float, 3> vector3f(vector);
+  ASSERT_EQ(vector3f, draco::Vector3f(1.f, 2.f, 3.f));
+
+  const draco::VectorD<float, 2> vector2f(vector);
+  ASSERT_EQ(vector2f, draco::Vector2f(1.f, 2.f));
+
+  const draco::VectorD<float, 4> vector4f(vector3f);
+  ASSERT_EQ(vector4f, draco::Vector4f(1.f, 2.f, 3.f, 0.f));
+
+  const draco::VectorD<double, 1> vector1d(vector3f);
+  ASSERT_EQ(vector1d[0], 1.0);
+}
+
 }  // namespace

src/draco/io/file_utils.cc

@@ -0,0 +1,65 @@
+// Copyright 2018 The Draco Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+#include "draco/io/file_utils.h"
+
+#include "draco/io/parser_utils.h"
+
+namespace draco {
+
+bool SplitPath(const std::string &full_path, std::string *out_folder_path,
+               std::string *out_file_name) {
+  const auto pos = full_path.find_last_of("/\\");
+  if (pos != std::string::npos) {
+    if (out_folder_path)
+      *out_folder_path = full_path.substr(0, pos);
+    if (out_file_name)
+      *out_file_name = full_path.substr(pos + 1, full_path.length());
+  } else {
+    if (out_folder_path)
+      *out_folder_path = ".";
+    if (out_file_name)
+      *out_file_name = full_path;
+  }
+  return true;
+}
+
+std::string ReplaceFileExtension(const std::string &in_file_name,
+                                 const std::string &new_extension) {
+  const auto pos = in_file_name.find_last_of(".");
+  if (pos == std::string::npos) {
+    // No extension found.
+    return in_file_name + "." + new_extension;
+  }
+  return in_file_name.substr(0, pos + 1) + new_extension;
+}
+
+std::string LowercaseFileExtension(const std::string &filename) {
+  const size_t pos = filename.find_last_of('.');
+  if (pos == 0 || pos == std::string::npos || pos == filename.length() - 1)
+    return "";
+  return parser::ToLower(filename.substr(pos + 1));
+}
+
+std::string GetFullPath(const std::string &input_file_relative_path,
+                        const std::string &sibling_file_full_path) {
+  const auto pos = sibling_file_full_path.find_last_of("/\\");
+  std::string input_file_full_path;
+  if (pos != std::string::npos)
+    input_file_full_path = sibling_file_full_path.substr(0, pos + 1);
+  input_file_full_path += input_file_relative_path;
+  return input_file_full_path;
+}
+
+}  // namespace draco

src/draco/io/file_utils.h

@@ -0,0 +1,51 @@
+// Copyright 2018 The Draco Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+#ifndef DRACO_IO_FILE_UTILS_H_
+#define DRACO_IO_FILE_UTILS_H_
+
+#include <string>
+
+namespace draco {
+
+// Splits full path to a file into a folder path + file name.
+// |out_folder_path| will contain the path to the folder containing the file
+// excluding the final slash. If no folder is specified in the |full_path|, then
+// |out_folder_path| is set to "."
+// Returns false on error.
+bool SplitPath(const std::string &full_path, std::string *out_folder_path,
+               std::string *out_file_name);
+
+// Replaces file extension in |in_file_name| with |new_extension|.
+// If |in_file_name| does not have any extension, the extension is appended.
+std::string ReplaceFileExtension(const std::string &in_file_name,
+                                 const std::string &new_extension);
+
+// Returns the file extension in lowercase if present, else "". Extension is
+// defined as the string after the last '.' character. If the file starts with
+// '.' (e.g. Linux hidden files), the first delimiter is ignored.
+std::string LowercaseFileExtension(const std::string &filename);
+
+// Given a path of the input file |input_file_relative_path| relative to the
+// parent directory of |sibling_file_full_path|, this function returns full path
+// to the input file. If |sibling_file_full_path| has no directory, the relative
+// path itself |input_file_relative_path| is returned. A common use case is for
+// the |input_file_relative_path| to be just a file name. See usage examples in
+// the unit test.
+std::string GetFullPath(const std::string &input_file_relative_path,
+                        const std::string &sibling_file_full_path);
+
+}  // namespace draco
+
+#endif  // DRACO_IO_FILE_UTILS_H_

src/draco/io/file_utils_test.cc

@@ -0,0 +1,55 @@
+// Copyright 2018 The Draco Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+#include "draco/io/file_utils.h"
+#include "draco/core/draco_test_base.h"
+#include "draco/core/draco_test_utils.h"
+
+namespace {
+
+TEST(FileUtilsTest, SplitsPath) {
+  // Tests that the function SplitPath correctly splits a set of test paths.
+  std::string folder_path, file_name;
+  draco::SplitPath("file.x", &folder_path, &file_name);
+  ASSERT_EQ(folder_path, ".");
+  ASSERT_EQ(file_name, "file.x");
+
+  draco::SplitPath("a/b/file.y", &folder_path, &file_name);
+  ASSERT_EQ(folder_path, "a/b");
+  ASSERT_EQ(file_name, "file.y");
+
+  draco::SplitPath("//a/b/c/d/file.z", &folder_path, &file_name);
+  ASSERT_EQ(folder_path, "//a/b/c/d");
+  ASSERT_EQ(file_name, "file.z");
+}
+
+TEST(FileUtilsTest, ReplaceExtension) {
+  // Tests that the function ReplaceFileExtension correctly replaces extensions
+  // of specified files.
+  ASSERT_EQ(draco::ReplaceFileExtension("a.abc", "x"), "a.x");
+  ASSERT_EQ(draco::ReplaceFileExtension("abc", "x"), "abc.x");  // No extension
+  ASSERT_EQ(draco::ReplaceFileExtension("a/b/c.d", "xyz"), "a/b/c.xyz");
+}
+
+TEST(FileUtilsTest, GetFullPath) {
+  // Tests that full path is returned when a sibling file has full path.
+  ASSERT_EQ(draco::GetFullPath("xo.png", "/d/i/r/xo.gltf"), "/d/i/r/xo.png");
+  ASSERT_EQ(draco::GetFullPath("buf/01.bin", "dir/xo.gltf"), "dir/buf/01.bin");
+  ASSERT_EQ(draco::GetFullPath("xo.mtl", "/xo.obj"), "/xo.mtl");
+
+  // Tests that only file name is returned when a sibling file has no full path.
+  ASSERT_EQ(draco::GetFullPath("xo.mtl", "xo.obj"), "xo.mtl");
+}
+
+}  // namespace

src/draco/io/mesh_io.cc

@@ -16,37 +16,33 @@
 
 #include <fstream>
 
+#include "draco/io/file_utils.h"
 #include "draco/io/obj_decoder.h"
-#include "draco/io/parser_utils.h"
 #include "draco/io/ply_decoder.h"
 
 namespace draco {
 
-namespace {
-
-// Returns the file extension in lowercase if present, else ""
-inline std::string LowercaseFileExtension(const std::string &filename) {
-  size_t pos = filename.find_last_of('.');
-  if (pos == std::string::npos || pos >= filename.length() - 1)
-    return "";
-  return parser::ToLower(filename.substr(pos + 1));
-}
-
-}  // namespace
-
 StatusOr<std::unique_ptr<Mesh>> ReadMeshFromFile(const std::string &file_name) {
-  return ReadMeshFromFile(file_name, false);
+  const Options options;
+  return ReadMeshFromFile(file_name, options);
 }
 
 StatusOr<std::unique_ptr<Mesh>> ReadMeshFromFile(const std::string &file_name,
                                                  bool use_metadata) {
+  Options options;
+  options.SetBool("use_metadata", use_metadata);
+  return ReadMeshFromFile(file_name, options);
+}
+
+StatusOr<std::unique_ptr<Mesh>> ReadMeshFromFile(const std::string &file_name,
+                                                 const Options &options) {
   std::unique_ptr<Mesh> mesh(new Mesh());
   // Analyze file extension.
   const std::string extension = LowercaseFileExtension(file_name);
   if (extension == "obj") {
     // Wavefront OBJ file format.
     ObjDecoder obj_decoder;
-    obj_decoder.set_use_metadata(use_metadata);
+    obj_decoder.set_use_metadata(options.GetBool("use_metadata", false));
     const Status obj_status = obj_decoder.DecodeFromFile(file_name, mesh.get());
     if (!obj_status.ok())
       return obj_status;
@@ -55,8 +51,7 @@ StatusOr<std::unique_ptr<Mesh>> ReadMeshFromFile(const std::string &file_name,
   if (extension == "ply") {
     // Wavefront PLY file format.
     PlyDecoder ply_decoder;
-    if (!ply_decoder.DecodeFromFile(file_name, mesh.get()))
-      return Status(Status::ERROR, "Unknown error.");
+    DRACO_RETURN_IF_ERROR(ply_decoder.DecodeFromFile(file_name, mesh.get()));
     return std::move(mesh);
   }
 

src/draco/io/mesh_io.h

@@ -18,6 +18,7 @@
 #include "draco/compression/config/compression_shared.h"
 #include "draco/compression/decode.h"
 #include "draco/compression/expert_encode.h"
+#include "draco/core/options.h"
 
 namespace draco {
 
@@ -89,6 +90,13 @@ StatusOr<std::unique_ptr<Mesh>> ReadMeshFromFile(const std::string &file_name);
 StatusOr<std::unique_ptr<Mesh>> ReadMeshFromFile(const std::string &file_name,
                                                  bool use_metadata);
 
+// Reads a mesh from a file. Reading is configured with |options|:
+// use_metadata  : Read obj file info like material names and object names into
+// metadata. Default is false.
+// Returns nullptr with an error status if the decoding failed.
+StatusOr<std::unique_ptr<Mesh>> ReadMeshFromFile(const std::string &file_name,
+                                                 const Options &options);
+
 }  // namespace draco
 
 #endif  // DRACO_MESH_MESH_IO_H_

src/draco/io/obj_decoder.cc

@@ -18,6 +18,7 @@
 #include <cmath>
 #include <fstream>
 
+#include "draco/io/file_utils.h"
 #include "draco/io/parser_utils.h"
 #include "draco/metadata/geometry_metadata.h"
 
@@ -151,12 +152,13 @@ Status ObjDecoder::DecodeInternal() {
   }
   if (num_materials_ > 0 && num_obj_faces_ > 0) {
     GeometryAttribute va;
+    const auto geometry_attribute_type = GeometryAttribute::GENERIC;
     if (num_materials_ < 256) {
-      va.Init(GeometryAttribute::GENERIC, nullptr, 1, DT_UINT8, false, 1, 0);
+      va.Init(geometry_attribute_type, nullptr, 1, DT_UINT8, false, 1, 0);
     } else if (num_materials_ < (1 << 16)) {
-      va.Init(GeometryAttribute::GENERIC, nullptr, 1, DT_UINT16, false, 2, 0);
+      va.Init(geometry_attribute_type, nullptr, 1, DT_UINT16, false, 2, 0);
     } else {
-      va.Init(GeometryAttribute::GENERIC, nullptr, 1, DT_UINT32, false, 4, 0);
+      va.Init(geometry_attribute_type, nullptr, 1, DT_UINT32, false, 4, 0);
     }
     material_att_id_ =
         out_point_cloud_->AddAttribute(va, false, num_materials_);
@@ -234,10 +236,13 @@ Status ObjDecoder::DecodeInternal() {
       out_mesh_->SetFace(i, face);
     }
   }
-#ifdef DRACO_ATTRIBUTE_DEDUPLICATION_SUPPORTED
+
+#ifdef DRACO_ATTRIBUTE_VALUES_DEDUPLICATION_SUPPORTED
   if (deduplicate_input_values_) {
     out_point_cloud_->DeduplicateAttributeValues();
   }
+#endif
+#ifdef DRACO_ATTRIBUTE_INDICES_DEDUPLICATION_SUPPORTED
   out_point_cloud_->DeduplicatePointIds();
 #endif
   return status;
@@ -492,6 +497,7 @@ bool ObjDecoder::ParseMaterial(Status * /* status */) {
     // will be added to the list.
     last_material_id_ = num_materials_;
     material_name_to_id_[mat_name] = num_materials_++;
+
     return true;
   }
   last_material_id_ = it->second;
@@ -626,15 +632,7 @@ void ObjDecoder::MapPointToVertexIndices(
 
 bool ObjDecoder::ParseMaterialFile(const std::string &file_name,
                                    Status *status) {
-  // Get the correct path to the |file_name| using the folder from
-  // |input_file_name_| as the root folder.
-  const auto pos = input_file_name_.find_last_of("/\\");
-  std::string full_path;
-  if (pos != std::string::npos) {
-    full_path = input_file_name_.substr(0, pos + 1);
-  }
-  full_path += file_name;
-
+  const std::string full_path = GetFullPath(file_name, input_file_name_);
   std::ifstream file(full_path, std::ios::binary);
   if (!file)
     return false;
@@ -676,15 +674,14 @@ bool ObjDecoder::ParseMaterialFileDefinition(Status * /* status */) {
   std::string str;
   if (!parser::ParseString(buffer(), &str))
     return false;
-  if (str.compare("newmtl") == 0) {
+  if (str == "newmtl") {
     parser::SkipWhitespace(buffer());
     parser::ParseLine(buffer(), &str);
-    if (str.length() == 0)
+    if (str.empty())
       return false;
     // Add new material to our map.
     material_name_to_id_[str] = num_materials_++;
   }
-  parser::SkipLine(buffer());
   return true;
 }
 

src/draco/io/parser_utils.cc

@@ -128,7 +128,7 @@ bool ParseFloat(DecoderBuffer *buffer, float *value) {
         return false;
 
       // Apply exponent scaling to value.
-      v *= pow(10.0, exponent);
+      v *= pow(static_cast<double>(10.0), exponent);
     }
   }
 

src/draco/io/ply_decoder.cc

@@ -17,28 +17,30 @@
 #include <fstream>
 
 #include "draco/core/macros.h"
+#include "draco/core/status.h"
 #include "draco/io/ply_property_reader.h"
 
 namespace draco {
 
 PlyDecoder::PlyDecoder() : out_mesh_(nullptr), out_point_cloud_(nullptr) {}
 
-bool PlyDecoder::DecodeFromFile(const std::string &file_name, Mesh *out_mesh) {
+Status PlyDecoder::DecodeFromFile(const std::string &file_name,
+                                  Mesh *out_mesh) {
   out_mesh_ = out_mesh;
   return DecodeFromFile(file_name, static_cast<PointCloud *>(out_mesh));
 }
 
-bool PlyDecoder::DecodeFromFile(const std::string &file_name,
+Status PlyDecoder::DecodeFromFile(const std::string &file_name,
                                   PointCloud *out_point_cloud) {
   std::ifstream file(file_name, std::ios::binary);
   if (!file)
-    return false;
+    return Status(Status::IO_ERROR, "Couldn't open file");
   // Read the whole file into a buffer.
   auto pos0 = file.tellg();
   file.seekg(0, std::ios::end);
   auto file_size = file.tellg() - pos0;
   if (file_size == 0)
-    return false;
+    return Status(Status::IO_ERROR, "Zero file size");
   file.seekg(0, std::ios::beg);
   std::vector<char> data(file_size);
   file.read(&data[0], file_size);
@@ -47,44 +49,45 @@ bool PlyDecoder::DecodeFromFile(const std::string &file_name,
   return DecodeFromBuffer(&buffer_, out_point_cloud);
 }
 
-bool PlyDecoder::DecodeFromBuffer(DecoderBuffer *buffer, Mesh *out_mesh) {
+Status PlyDecoder::DecodeFromBuffer(DecoderBuffer *buffer, Mesh *out_mesh) {
   out_mesh_ = out_mesh;
   return DecodeFromBuffer(buffer, static_cast<PointCloud *>(out_mesh));
 }
 
-bool PlyDecoder::DecodeFromBuffer(DecoderBuffer *buffer,
+Status PlyDecoder::DecodeFromBuffer(DecoderBuffer *buffer,
                                     PointCloud *out_point_cloud) {
   out_point_cloud_ = out_point_cloud;
   buffer_.Init(buffer->data_head(), buffer->remaining_size());
   return DecodeInternal();
 }
 
-bool PlyDecoder::DecodeInternal() {
+Status PlyDecoder::DecodeInternal() {
   PlyReader ply_reader;
-  if (!ply_reader.Read(buffer()))
-    return false;
+  DRACO_RETURN_IF_ERROR(ply_reader.Read(buffer()));
   // First, decode the connectivity data.
-  if (out_mesh_ && !DecodeFaceData(ply_reader.GetElementByName("face")))
-    return false;
+  if (out_mesh_)
+    DRACO_RETURN_IF_ERROR(DecodeFaceData(ply_reader.GetElementByName("face")));
   // Decode all attributes.
-  if (!DecodeVertexData(ply_reader.GetElementByName("vertex")))
-    return false;
-#ifdef DRACO_ATTRIBUTE_DEDUPLICATION_SUPPORTED
+  DRACO_RETURN_IF_ERROR(
+      DecodeVertexData(ply_reader.GetElementByName("vertex")));
   // In case there are no faces this is just a point cloud which does
   // not require deduplication.
   if (out_mesh_ && out_mesh_->num_faces() != 0) {
+#ifdef DRACO_ATTRIBUTE_VALUES_DEDUPLICATION_SUPPORTED
     if (!out_point_cloud_->DeduplicateAttributeValues())
-      return false;
-    out_point_cloud_->DeduplicatePointIds();
-  }
+      return Status(Status::ERROR, "Could not deduplicate attribute values");
 #endif
-  return true;
+#ifdef DRACO_ATTRIBUTE_INDICES_DEDUPLICATION_SUPPORTED
+    out_point_cloud_->DeduplicatePointIds();
+#endif
+  }
+  return OkStatus();
 }
 
-bool PlyDecoder::DecodeFaceData(const PlyElement *face_element) {
+Status PlyDecoder::DecodeFaceData(const PlyElement *face_element) {
   // We accept point clouds now.
   if (face_element == nullptr) {
-    return true;
+    return Status(Status::INVALID_PARAMETER, "face_element is null");
   }
   const int64_t num_faces = face_element->num_entries();
   out_mesh_->SetNumFaces(num_faces);
@@ -95,7 +98,7 @@ bool PlyDecoder::DecodeFaceData(const PlyElement *face_element) {
     vertex_indices = face_element->GetPropertyByName("vertex_index");
   }
   if (vertex_indices == nullptr || !vertex_indices->is_list()) {
-    return false;  // No faces defined.
+    return Status(Status::ERROR, "No faces defined");
   }
 
   PlyPropertyReader<PointIndex::ValueType> vertex_index_reader(vertex_indices);
@@ -114,7 +117,7 @@ bool PlyDecoder::DecodeFaceData(const PlyElement *face_element) {
     face_index++;
   }
   out_mesh_->SetNumFaces(face_index.value());
-  return true;
+  return OkStatus();
 }
 
 template <typename DataTypeT>
@@ -138,9 +141,9 @@ bool PlyDecoder::ReadPropertiesToAttribute(
   return true;
 }
 
-bool PlyDecoder::DecodeVertexData(const PlyElement *vertex_element) {
+Status PlyDecoder::DecodeVertexData(const PlyElement *vertex_element) {
   if (vertex_element == nullptr)
-    return false;
+    return Status(Status::INVALID_PARAMETER, "vertex_element is null");
   // TODO(ostava): For now, try to load x,y,z vertices and red,green,blue,alpha
   // colors. We need to add other properties later.
   const PlyProperty *const x_prop = vertex_element->GetPropertyByName("x");
@@ -149,7 +152,7 @@ bool PlyDecoder::DecodeVertexData(const PlyElement *vertex_element) {
   if (!x_prop || !y_prop || !z_prop) {
     // Currently, we require 3 vertex coordinates (this should be generalized
     // later on).
-    return false;
+    return Status(Status::INVALID_PARAMETER, "x, y, or z property is missing");
   }
   const PointIndex::ValueType num_vertices = vertex_element->num_entries();
   out_point_cloud_->set_num_points(num_vertices);
@@ -158,12 +161,14 @@ bool PlyDecoder::DecodeVertexData(const PlyElement *vertex_element) {
     // All properties must have the same type.
     if (x_prop->data_type() != y_prop->data_type() ||
         y_prop->data_type() != z_prop->data_type()) {
-      return false;
+      return Status(Status::INVALID_PARAMETER,
+                    "x, y, and z properties must have the same type");
     }
     // TODO(ostava): For now assume the position types are float32 or int32.
     const DataType dt = x_prop->data_type();
     if (dt != DT_FLOAT32 && dt != DT_INT32)
-      return false;
+      return Status(Status::INVALID_PARAMETER,
+                    "x, y, and z properties must be of type float32 or int32");
 
     GeometryAttribute va;
     va.Init(GeometryAttribute::POSITION, nullptr, 3, dt, false,
@@ -232,7 +237,8 @@ bool PlyDecoder::DecodeVertexData(const PlyElement *vertex_element) {
       // TODO(ostava): For now ensure the data type of all components is uint8.
       DRACO_DCHECK_EQ(true, p->data_type() == DT_UINT8);
       if (p->data_type() != DT_UINT8)
-        return false;
+        return Status(Status::INVALID_PARAMETER,
+                      "Type of 'red' property must be uint8");
       color_readers.push_back(std::unique_ptr<PlyPropertyReader<uint8_t>>(
           new PlyPropertyReader<uint8_t>(p)));
     }
@@ -241,7 +247,8 @@ bool PlyDecoder::DecodeVertexData(const PlyElement *vertex_element) {
       // TODO(ostava): For now ensure the data type of all components is uint8.
       DRACO_DCHECK_EQ(true, p->data_type() == DT_UINT8);
       if (p->data_type() != DT_UINT8)
-        return false;
+        return Status(Status::INVALID_PARAMETER,
+                      "Type of 'green' property must be uint8");
       color_readers.push_back(std::unique_ptr<PlyPropertyReader<uint8_t>>(
           new PlyPropertyReader<uint8_t>(p)));
     }
@@ -250,7 +257,8 @@ bool PlyDecoder::DecodeVertexData(const PlyElement *vertex_element) {
       // TODO(ostava): For now ensure the data type of all components is uint8.
       DRACO_DCHECK_EQ(true, p->data_type() == DT_UINT8);
       if (p->data_type() != DT_UINT8)
-        return false;
+        return Status(Status::INVALID_PARAMETER,
+                      "Type of 'blue' property must be uint8");
       color_readers.push_back(std::unique_ptr<PlyPropertyReader<uint8_t>>(
           new PlyPropertyReader<uint8_t>(p)));
     }
@@ -259,7 +267,8 @@ bool PlyDecoder::DecodeVertexData(const PlyElement *vertex_element) {
       // TODO(ostava): For now ensure the data type of all components is uint8.
       DRACO_DCHECK_EQ(true, p->data_type() == DT_UINT8);
       if (p->data_type() != DT_UINT8)
-        return false;
+        return Status(Status::INVALID_PARAMETER,
+                      "Type of 'alpha' property must be uint8");
       color_readers.push_back(std::unique_ptr<PlyPropertyReader<uint8_t>>(
           new PlyPropertyReader<uint8_t>(p)));
     }
@@ -279,7 +288,7 @@ bool PlyDecoder::DecodeVertexData(const PlyElement *vertex_element) {
     }
   }
 
-  return true;
+  return OkStatus();
 }
 
 }  // namespace draco

src/draco/io/ply_decoder.h

@@ -20,6 +20,7 @@
 #include "draco/draco_features.h"
 
 #include "draco/core/decoder_buffer.h"
+#include "draco/core/status.h"
 #include "draco/io/ply_reader.h"
 #include "draco/mesh/mesh.h"
 
@@ -35,21 +36,20 @@ class PlyDecoder {
   PlyDecoder();
 
   // Decodes an obj file stored in the input file.
-  // Returns nullptr if the decoding failed.
-  bool DecodeFromFile(const std::string &file_name, Mesh *out_mesh);
-  bool DecodeFromFile(const std::string &file_name,
+  Status DecodeFromFile(const std::string &file_name, Mesh *out_mesh);
+  Status DecodeFromFile(const std::string &file_name,
                         PointCloud *out_point_cloud);
 
-  bool DecodeFromBuffer(DecoderBuffer *buffer, Mesh *out_mesh);
-  bool DecodeFromBuffer(DecoderBuffer *buffer, PointCloud *out_point_cloud);
+  Status DecodeFromBuffer(DecoderBuffer *buffer, Mesh *out_mesh);
+  Status DecodeFromBuffer(DecoderBuffer *buffer, PointCloud *out_point_cloud);
 
  protected:
-  bool DecodeInternal();
+  Status DecodeInternal();
   DecoderBuffer *buffer() { return &buffer_; }
 
  private:
-  bool DecodeFaceData(const PlyElement *face_element);
-  bool DecodeVertexData(const PlyElement *vertex_element);
+  Status DecodeFaceData(const PlyElement *face_element);
+  Status DecodeVertexData(const PlyElement *vertex_element);
 
   template <typename DataTypeT>
   bool ReadPropertiesToAttribute(

src/draco/io/ply_decoder_test.cc

@@ -26,8 +26,11 @@ class PlyDecoderTest : public ::testing::Test {
     const std::string path = GetTestFileFullPath(file_name);
     PlyDecoder decoder;
     std::unique_ptr<Geometry> geometry(new Geometry());
-    if (!decoder.DecodeFromFile(path, geometry.get()))
+    Status status = decoder.DecodeFromFile(path, geometry.get());
+    if (!status.ok()) {
+      LOG(ERROR) << "Failed to decode " << file_name << ": " << status;
       return nullptr;
+    }
     return geometry;
   }
 

src/draco/io/ply_reader.cc

@@ -17,6 +17,7 @@
 #include <array>
 #include <regex>
 
+#include "draco/core/status.h"
 #include "draco/io/parser_utils.h"
 #include "draco/io/ply_property_writer.h"
 
@@ -34,13 +35,11 @@ PlyElement::PlyElement(const std::string &name, int64_t num_entries)
 
 PlyReader::PlyReader() : format_(kLittleEndian) {}
 
-bool PlyReader::Read(DecoderBuffer *buffer) {
-  error_message_.clear();
+Status PlyReader::Read(DecoderBuffer *buffer) {
   std::string value;
   // The first line needs to by "ply".
   if (!parser::ParseString(buffer, &value) || value != "ply") {
-    error_message_ = "Not a valid ply file.";
-    return false;
+    return Status(Status::INVALID_PARAMETER, "Not a valid ply file");
   }
   parser::SkipLine(buffer);
 
@@ -52,52 +51,49 @@ bool PlyReader::Read(DecoderBuffer *buffer) {
     format = words[1];
     version = words[2];
   } else {
-    error_message_ = "Missing or wrong format line.";
-    return false;
+    return Status(Status::INVALID_PARAMETER, "Missing or wrong format line");
   }
   if (version != "1.0") {
-    error_message_ = "Unsupported PLY version.";
-    return false;  // Wrong version.
+    return Status(Status::UNSUPPORTED_VERSION, "Unsupported PLY version");
   }
   if (format == "binary_big_endian") {
-    error_message_ =
+    return Status(Status::UNSUPPORTED_VERSION,
                   "Unsupported format. Currently we support only ascii and"
-        " binary_little_endian format.";
-    return false;
+                  " binary_little_endian format.");
   }
   if (format == "ascii") {
     format_ = kAscii;
   } else {
     format_ = kLittleEndian;
   }
-  if (!ParseHeader(buffer))
-    return false;
-  if (!ParsePropertiesData(buffer))
-    return false;
-  return true;
+  DRACO_RETURN_IF_ERROR(ParseHeader(buffer));
+  if (!ParsePropertiesData(buffer)) {
+    return Status(Status::INVALID_PARAMETER, "Couldn't parse properties");
+  }
+  return OkStatus();
 }
 
-bool PlyReader::ParseHeader(DecoderBuffer *buffer) {
-  while (error_message_.length() == 0 && !ParseEndHeader(buffer)) {
+Status PlyReader::ParseHeader(DecoderBuffer *buffer) {
+  while (true) {
+    DRACO_ASSIGN_OR_RETURN(bool end, ParseEndHeader(buffer));
+    if (end)
+      break;
     if (ParseElement(buffer))
       continue;
-    if (ParseProperty(buffer))
+    DRACO_ASSIGN_OR_RETURN(bool property_parsed, ParseProperty(buffer));
+    if (property_parsed)
       continue;
     parser::SkipLine(buffer);
   }
-  if (error_message_.length() > 0) {
-    printf("ERROR %s\n", error_message_.c_str());
-    return false;
-  }
-  return true;
+  return OkStatus();
 }
 
-bool PlyReader::ParseEndHeader(DecoderBuffer *buffer) {
+StatusOr<bool> PlyReader::ParseEndHeader(DecoderBuffer *buffer) {
   parser::SkipWhitespace(buffer);
   std::array<char, 10> c;
   if (!buffer->Peek(&c)) {
-    error_message_ = "End of file reached before the end_header.";
-    return false;
+    return Status(Status::INVALID_PARAMETER,
+                  "End of file reached before the end_header");
   }
   if (std::memcmp(&c[0], "end_header", 10) != 0)
     return false;
@@ -126,7 +122,7 @@ bool PlyReader::ParseElement(DecoderBuffer *buffer) {
   return true;
 }
 
-bool PlyReader::ParseProperty(DecoderBuffer *buffer) {
+StatusOr<bool> PlyReader::ParseProperty(DecoderBuffer *buffer) {
   if (elements_.empty())
     return false;  // Ignore properties if there is no active element.
   DecoderBuffer line_buffer(*buffer);
@@ -154,15 +150,13 @@ bool PlyReader::ParseProperty(DecoderBuffer *buffer) {
   }
   const DataType data_type = GetDataTypeFromString(data_type_str);
   if (data_type == DT_INVALID) {
-    error_message_ = "Wrong property data type.";
-    return true;  // Parsed.
+    return Status(Status::INVALID_PARAMETER, "Wrong property data type");
   }
   DataType list_type = DT_INVALID;
   if (property_list_search) {
     list_type = GetDataTypeFromString(list_type_str);
     if (list_type == DT_INVALID) {
-      error_message_ = "Wrong property list type.";
-      return true;  // Parsed.
+      return Status(Status::INVALID_PARAMETER, "Wrong property list type");
     }
   }
   elements_.back().AddProperty(

src/draco/io/ply_reader.h

@@ -26,6 +26,8 @@
 
 #include "draco/core/decoder_buffer.h"
 #include "draco/core/draco_types.h"
+#include "draco/core/status.h"
+#include "draco/core/status_or.h"
 
 namespace draco {
 
@@ -111,7 +113,7 @@ class PlyElement {
 class PlyReader {
  public:
   PlyReader();
-  bool Read(DecoderBuffer *buffer);
+  Status Read(DecoderBuffer *buffer);
 
   const PlyElement *GetElementByName(const std::string &name) const {
     const auto it = element_index_.find(name);
@@ -128,10 +130,10 @@ class PlyReader {
  private:
   enum Format { kLittleEndian = 0, kAscii };
 
-  bool ParseHeader(DecoderBuffer *buffer);
-  bool ParseEndHeader(DecoderBuffer *buffer);
+  Status ParseHeader(DecoderBuffer *buffer);
+  StatusOr<bool> ParseEndHeader(DecoderBuffer *buffer);
   bool ParseElement(DecoderBuffer *buffer);
-  bool ParseProperty(DecoderBuffer *buffer);
+  StatusOr<bool> ParseProperty(DecoderBuffer *buffer);
   bool ParsePropertiesData(DecoderBuffer *buffer);
   bool ParseElementData(DecoderBuffer *buffer, int element_index);
   bool ParseElementDataAscii(DecoderBuffer *buffer, int element_index);
@@ -141,7 +143,6 @@ class PlyReader {
   DataType GetDataTypeFromString(const std::string &name) const;
 
   std::vector<PlyElement> elements_;
-  std::string error_message_;
   std::map<std::string, int> element_index_;
   Format format_;
 };

src/draco/io/ply_reader_test.cc

@@ -45,7 +45,8 @@ TEST_F(PlyReaderTest, TestReader) {
   DecoderBuffer buf;
   buf.Init(data.data(), data.size());
   PlyReader reader;
-  ASSERT_TRUE(reader.Read(&buf));
+  Status status = reader.Read(&buf);
+  ASSERT_TRUE(status.ok()) << status;
   ASSERT_EQ(reader.num_elements(), 2);
   ASSERT_EQ(reader.element(0).num_properties(), 7);
   ASSERT_EQ(reader.element(1).num_properties(), 1);
@@ -68,13 +69,15 @@ TEST_F(PlyReaderTest, TestReaderAscii) {
   DecoderBuffer buf;
   buf.Init(data.data(), data.size());
   PlyReader reader;
-  ASSERT_TRUE(reader.Read(&buf));
+  Status status = reader.Read(&buf);
+  ASSERT_TRUE(status.ok()) << status;
 
   const std::string file_name_ascii = "test_pos_color_ascii.ply";
   const std::vector<char> data_ascii = ReadPlyFile(file_name_ascii);
   buf.Init(data_ascii.data(), data_ascii.size());
   PlyReader reader_ascii;
-  ASSERT_TRUE(reader_ascii.Read(&buf));
+  status = reader_ascii.Read(&buf);
+  ASSERT_TRUE(status.ok()) << status;
   ASSERT_EQ(reader.num_elements(), reader_ascii.num_elements());
   ASSERT_EQ(reader.element(0).num_properties(),
             reader_ascii.element(0).num_properties());
@@ -97,7 +100,8 @@ TEST_F(PlyReaderTest, TestReaderExtraWhitespace) {
   DecoderBuffer buf;
   buf.Init(data.data(), data.size());
   PlyReader reader;
-  ASSERT_TRUE(reader.Read(&buf));
+  Status status = reader.Read(&buf);
+  ASSERT_TRUE(status.ok()) << status;
 
   ASSERT_EQ(reader.num_elements(), 2);
   ASSERT_EQ(reader.element(0).num_properties(), 7);
@@ -121,7 +125,8 @@ TEST_F(PlyReaderTest, TestReaderMoreDataTypes) {
   DecoderBuffer buf;
   buf.Init(data.data(), data.size());
   PlyReader reader;
-  ASSERT_TRUE(reader.Read(&buf));
+  Status status = reader.Read(&buf);
+  ASSERT_TRUE(status.ok()) << status;
 
   ASSERT_EQ(reader.num_elements(), 2);
   ASSERT_EQ(reader.element(0).num_properties(), 7);

src/draco/io/point_cloud_io.cc

@@ -40,8 +40,7 @@ StatusOr<std::unique_ptr<PointCloud>> ReadPointCloudFromFile(
   if (extension == ".ply") {
     // Wavefront PLY file format.
     PlyDecoder ply_decoder;
-    if (!ply_decoder.DecodeFromFile(file_name, pc.get()))
-      return Status(Status::ERROR, "Unknown error.");
+    DRACO_RETURN_IF_ERROR(ply_decoder.DecodeFromFile(file_name, pc.get()));
     return std::move(pc);
   }
 

src/draco/javascript/emscripten/decoder_webidl_wrapper.cc

@@ -32,15 +32,6 @@ bool MetadataQuerier::HasEntry(const Metadata &metadata,
   return metadata.entries().count(entry_name) > 0;
 }
 
-bool MetadataQuerier::HasIntEntry(const Metadata &metadata,
-                                  const char *entry_name) const {
-  int32_t value = 0;
-  const std::string name(entry_name);
-  if (!metadata.GetEntryInt(name, &value))
-    return false;
-  return true;
-}
-
 long MetadataQuerier::GetIntEntry(const Metadata &metadata,
                                   const char *entry_name) const {
   int32_t value = 0;
@@ -49,15 +40,6 @@ long MetadataQuerier::GetIntEntry(const Metadata &metadata,
   return value;
 }
 
-bool MetadataQuerier::HasDoubleEntry(const Metadata &metadata,
-                                     const char *entry_name) const {
-  double value = 0;
-  const std::string name(entry_name);
-  if (!metadata.GetEntryDouble(name, &value))
-    return false;
-  return true;
-}
-
 double MetadataQuerier::GetDoubleEntry(const Metadata &metadata,
                                        const char *entry_name) const {
   double value = 0;
@@ -66,21 +48,13 @@ double MetadataQuerier::GetDoubleEntry(const Metadata &metadata,
   return value;
 }
 
-bool MetadataQuerier::HasStringEntry(const Metadata &metadata,
-                                     const char *entry_name) const {
-  std::string return_value;
-  const std::string name(entry_name);
-  if (!metadata.GetEntryString(name, &return_value))
-    return false;
-  return true;
-}
-
 const char *MetadataQuerier::GetStringEntry(const Metadata &metadata,
-                                            const char *entry_name) const {
-  std::string return_value;
+                                            const char *entry_name) {
   const std::string name(entry_name);
-  metadata.GetEntryString(name, &return_value);
-  const char *value = return_value.c_str();
+  if (!metadata.GetEntryString(name, &last_string_returned_))
+    return nullptr;
+
+  const char *value = last_string_returned_.c_str();
   return value;
 }
 

src/draco/javascript/emscripten/decoder_webidl_wrapper.h

@@ -39,18 +39,18 @@ class MetadataQuerier {
   MetadataQuerier();
 
   bool HasEntry(const draco::Metadata &metadata, const char *entry_name) const;
-  bool HasIntEntry(const draco::Metadata &metadata,
-                   const char *entry_name) const;
+
+  // This function does not guarantee that entry's type is long.
   long GetIntEntry(const draco::Metadata &metadata,
                    const char *entry_name) const;
-  bool HasDoubleEntry(const draco::Metadata &metadata,
-                      const char *entry_name) const;
+
+  // This function does not guarantee that entry's type is double.
   double GetDoubleEntry(const draco::Metadata &metadata,
                         const char *entry_name) const;
-  bool HasStringEntry(const draco::Metadata &metadata,
-                      const char *entry_name) const;
+
+  // This function does not guarantee that entry's type is char*.
   const char *GetStringEntry(const draco::Metadata &metadata,
-                             const char *entry_name) const;
+                             const char *entry_name);
 
   long NumEntries(const draco::Metadata &metadata) const;
   const char *GetEntryName(const draco::Metadata &metadata, int entry_id);
@@ -59,6 +59,9 @@ class MetadataQuerier {
   // Cached values for metadata entries.
   std::vector<std::string> entry_names_;
   const draco::Metadata *entry_names_metadata_;
+
+  // Cached value for GetStringEntry() to avoid scoping issues.
+  std::string last_string_returned_;
 };
 
 class DracoFloat32Array {

src/draco/javascript/emscripten/draco_web_decoder.idl

@@ -116,16 +116,10 @@ interface MetadataQuerier {
 
   boolean HasEntry([Ref, Const] Metadata metadata,
                    [Const] DOMString entry_name);
-  boolean HasIntEntry([Ref, Const] Metadata metadata,
-                      [Const] DOMString entry_name);
   long GetIntEntry([Ref, Const] Metadata metadata,
                    [Const] DOMString entry_name);
-  boolean HasDoubleEntry([Ref, Const] Metadata metadata,
-                         [Const] DOMString entry_name);
   double GetDoubleEntry([Ref, Const] Metadata metadata,
                         [Const] DOMString entry_name);
-  boolean HasStringEntry([Ref, Const] Metadata metadata,
-                         [Const] DOMString entry_name);
   [Const] DOMString GetStringEntry([Ref, Const] Metadata metadata,
                                    [Const] DOMString entry_name);
 

src/draco/maya/draco_maya_plugin.cc

@@ -237,8 +237,10 @@ EncodeResult drc2py_encode(Drc2PyMesh *in_mesh, char *file_path) {
   }
 
 // Deduplicate Attributes and Points
-#ifdef DRACO_ATTRIBUTE_DEDUPLICATION_SUPPORTED
+#ifdef DRACO_ATTRIBUTE_VALUES_DEDUPLICATION_SUPPORTED
   drc_mesh->DeduplicateAttributeValues();
+#endif
+#ifdef DRACO_ATTRIBUTE_INDICES_DEDUPLICATION_SUPPORTED
   drc_mesh->DeduplicatePointIds();
 #endif
 

src/draco/mesh/corner_table.cc

@@ -16,6 +16,7 @@
 
 #include <limits>
 
+#include "draco/attributes/geometry_indices.h"
 #include "draco/mesh/corner_table_iterators.h"
 
 namespace draco {
@@ -46,6 +47,8 @@ bool CornerTable::Init(const IndexTypeVector<FaceIndex, FaceType> &faces) {
   int num_vertices = -1;
   if (!ComputeOppositeCorners(&num_vertices))
     return false;
+  if (!BreakNonManifoldEdges())
+    return false;
   if (!ComputeVertexCorners(num_vertices))
     return false;
   return true;
@@ -193,6 +196,110 @@ bool CornerTable::ComputeOppositeCorners(int *num_vertices) {
   return true;
 }
 
+bool CornerTable::BreakNonManifoldEdges() {
+  // This function detects and breaks non-manifold edges that are caused by
+  // folds in 1-ring neighborhood around a vertex. Non-manifold edges can occur
+  // when the 1-ring surface around a vertex self-intersects in a common edge.
+  // For example imagine a surface around a pivot vertex 0, where the 1-ring
+  // is defined by vertices |1, 2, 3, 1, 4|. The surface passes edge <0, 1>
+  // twice which would result in a non-manifold edge that needs to be broken.
+  // For now all faces connected to these non-manifold edges are disconnected
+  // resulting in open boundaries on the mesh. New vertices will be created
+  // automatically for each new disjoint patch in the ComputeVertexCorners()
+  // method.
+  // Note that all other non-manifold edges are implicitly handled by the
+  // function ComputeVertexCorners() that automatically creates new vertices
+  // on disjoint 1-ring surface patches.
+
+  std::vector<bool> visited_corners(num_corners(), false);
+  std::vector<std::pair<VertexIndex, CornerIndex>> sink_vertices;
+  bool mesh_connectivity_updated = false;
+  do {
+    mesh_connectivity_updated = false;
+    for (CornerIndex c(0); c < num_corners(); ++c) {
+      if (visited_corners[c.value()])
+        continue;
+      sink_vertices.clear();
+
+      // First swing all the way to find the left-most corner connected to the
+      // corner's vertex.
+      CornerIndex first_c = c;
+      CornerIndex current_c = c;
+      CornerIndex next_c;
+      while (next_c = SwingLeft(current_c),
+             next_c != first_c && next_c != kInvalidCornerIndex &&
+                 !visited_corners[next_c.value()]) {
+        current_c = next_c;
+      }
+
+      first_c = current_c;
+
+      // Swing right from the first corner and check if all visited edges
+      // are unique.
+      do {
+        visited_corners[current_c.value()] = true;
+        // Each new edge is defined by the pivot vertex (that is the same for
+        // all faces) and by the sink vertex (that is the |next| vertex from the
+        // currently processed pivot corner. I.e., each edge is uniquely defined
+        // by the sink vertex index.
+        const CornerIndex sink_c = Next(current_c);
+        const VertexIndex sink_v = corner_to_vertex_map_[sink_c];
+
+        // Corner that defines the edge on the face.
+        const CornerIndex edge_corner = Previous(current_c);
+        bool vertex_connectivity_updated = false;
+        // Go over all processed edges (sink vertices). If the current sink
+        // vertex has been already encountered before it may indicate a
+        // non-manifold edge that needs to be broken.
+        for (auto &&attached_sink_vertex : sink_vertices) {
+          if (attached_sink_vertex.first == sink_v) {
+            // Sink vertex has been already processed.
+            const CornerIndex other_edge_corner = attached_sink_vertex.second;
+            const CornerIndex opp_edge_corner = Opposite(edge_corner);
+
+            if (opp_edge_corner == other_edge_corner) {
+              // We are closing the loop so no need to change the connectivity.
+              continue;
+            }
+
+            // Break the connectivity on the non-manifold edge.
+            // TODO(ostava): It may be possible to reconnect the faces in a way
+            // that the final surface would be manifold.
+            const CornerIndex opp_other_edge_corner =
+                Opposite(other_edge_corner);
+            if (opp_edge_corner != kInvalidCornerIndex)
+              SetOppositeCorner(opp_edge_corner, kInvalidCornerIndex);
+            if (opp_other_edge_corner != kInvalidCornerIndex)
+              SetOppositeCorner(opp_other_edge_corner, kInvalidCornerIndex);
+
+            SetOppositeCorner(edge_corner, kInvalidCornerIndex);
+            SetOppositeCorner(other_edge_corner, kInvalidCornerIndex);
+
+            vertex_connectivity_updated = true;
+            break;
+          }
+        }
+        if (vertex_connectivity_updated) {
+          // Because of the updated connectivity, not all corners connected to
+          // this vertex have been processed and we need to go over them again.
+          // TODO(ostava): This can be optimized as we don't really need to
+          // iterate over all corners.
+          mesh_connectivity_updated = true;
+          break;
+        }
+        // Insert new sink vertex information <sink vertex index, edge corner>.
+        std::pair<VertexIndex, CornerIndex> new_sink_vert;
+        new_sink_vert.first = corner_to_vertex_map_[Previous(current_c)];
+        new_sink_vert.second = sink_c;
+        sink_vertices.push_back(new_sink_vert);
+
+        current_c = SwingRight(current_c);
+      } while (current_c != first_c && current_c != kInvalidCornerIndex);
+    }
+  } while (mesh_connectivity_updated);
+  return true;
+}
+
 bool CornerTable::ComputeVertexCorners(int num_vertices) {
   DRACO_DCHECK(GetValenceCache().IsCacheEmpty());
   num_original_vertices_ = num_vertices;

src/draco/mesh/corner_table.h

@@ -51,7 +51,6 @@ namespace draco {
 // non-manifold edges and vertices are automatically split.
 class CornerTable {
  public:
-  // TODO(hemmer): rename to Face.
   // Corner table face type.
   typedef std::array<VertexIndex, 3> FaceType;
 
@@ -333,10 +332,14 @@ class CornerTable {
 
  private:
   // Computes opposite corners mapping from the data stored in
-  // |corner_to_vertex_map_|. Any non-manifold edge will be split so the result
-  // is always a 2-manifold surface.
+  // |corner_to_vertex_map_|.
   bool ComputeOppositeCorners(int *num_vertices);
 
+  // Finds and breaks non-manifold edges in the 1-ring neighborhood around
+  // vertices (vertices themselves will be split in the ComputeVertexCorners()
+  // function if necessary).
+  bool BreakNonManifoldEdges();
+
   // Computes the lookup map for going from a vertex to a corner. This method
   // can handle non-manifold vertices by splitting them into multiple manifold
   // vertices.

src/draco/mesh/mesh.cc

@@ -27,7 +27,7 @@ using conditional_t = typename std::conditional<B, T, F>::type;
 
 Mesh::Mesh() {}
 
-#ifdef DRACO_ATTRIBUTE_DEDUPLICATION_SUPPORTED
+#ifdef DRACO_ATTRIBUTE_INDICES_DEDUPLICATION_SUPPORTED
 void Mesh::ApplyPointIdDeduplication(
     const IndexTypeVector<PointIndex, PointIndex> &id_map,
     const std::vector<PointIndex> &unique_point_ids) {

src/draco/mesh/mesh.h

@@ -17,11 +17,11 @@
 
 #include <memory>
 
-#include "draco/draco_features.h"
-
 #include "draco/attributes/geometry_indices.h"
 #include "draco/core/hash_utils.h"
 #include "draco/core/macros.h"
+#include "draco/core/status.h"
+#include "draco/draco_features.h"
 #include "draco/point_cloud/point_cloud.h"
 
 namespace draco {
@@ -109,7 +109,7 @@ class Mesh : public PointCloud {
   };
 
  protected:
-#ifdef DRACO_ATTRIBUTE_DEDUPLICATION_SUPPORTED
+#ifdef DRACO_ATTRIBUTE_INDICES_DEDUPLICATION_SUPPORTED
   // Extends the point deduplication to face corners. This method is called from
   // the PointCloud::DeduplicatePointIds() and it remaps all point ids stored in
   // |faces_| to the new deduplicated point ids using the map |id_map|.

src/draco/mesh/mesh_misc_functions.h

@@ -56,6 +56,25 @@ inline bool IsCornerOppositeToAttributeSeam(CornerIndex ci,
   return false;
 }
 
+// Interpolates an attribute value on a face using given barycentric
+// coordinates. InterpolatedVectorT should be a VectorD that corresponds to the
+// values stored in the attribute.
+// TODO(ostava): Find a better place for this.
+template <typename InterpolatedVectorT>
+InterpolatedVectorT ComputeInterpolatedAttributeValueOnMeshFace(
+    const Mesh &mesh, const PointAttribute &attribute, FaceIndex fi,
+    const std::array<float, 3> &barycentric_coord) {
+  const Mesh::Face &face = mesh.face(fi);
+  // Get values for all three corners of the face.
+  InterpolatedVectorT val[3];
+  for (int c = 0; c < 3; ++c) {
+    attribute.GetMappedValue(face[c], &(val[c][0]));
+  }
+  // Return an interpolated value.
+  return barycentric_coord[0] * val[0] + barycentric_coord[1] * val[1] +
+         barycentric_coord[2] * val[2];
+}
+
 }  // namespace draco
 
 #endif  // DRACO_MESH_MESH_MISC_FUNCTIONS_H_

src/draco/mesh/triangle_soup_mesh_builder.cc

@@ -65,10 +65,12 @@ void TriangleSoupMeshBuilder::SetPerFaceAttributeValueForFace(
 }
 
 std::unique_ptr<Mesh> TriangleSoupMeshBuilder::Finalize() {
-#ifdef DRACO_ATTRIBUTE_DEDUPLICATION_SUPPORTED
+#ifdef DRACO_ATTRIBUTE_VALUES_DEDUPLICATION_SUPPORTED
   // First deduplicate attribute values.
   if (!mesh_->DeduplicateAttributeValues())
     return nullptr;
+#endif
+#ifdef DRACO_ATTRIBUTE_INDICES_DEDUPLICATION_SUPPORTED
   // Also deduplicate vertex indices.
   mesh_->DeduplicatePointIds();
 #endif

src/draco/metadata/metadata.h

@@ -101,27 +101,45 @@ class Metadata {
   // accessing entries of common data types. For now, developers need to know
   // the type of entries they are requesting.
   void AddEntryInt(const std::string &name, int32_t value);
+
+  // Returns false if Metadata does not contain an entry with a key of |name|.
+  // This function does not guarantee that entry's type is int32_t.
   bool GetEntryInt(const std::string &name, int32_t *value) const;
 
   void AddEntryIntArray(const std::string &name,
                         const std::vector<int32_t> &value);
+
+  // Returns false if Metadata does not contain an entry with a key of |name|.
+  // This function does not guarantee that entry's type is a vector of int32_t.
   bool GetEntryIntArray(const std::string &name,
                         std::vector<int32_t> *value) const;
 
   void AddEntryDouble(const std::string &name, double value);
+
+  // Returns false if Metadata does not contain an entry with a key of |name|.
+  // This function does not guarantee that entry's type is double.
   bool GetEntryDouble(const std::string &name, double *value) const;
 
   void AddEntryDoubleArray(const std::string &name,
                            const std::vector<double> &value);
+
+  // Returns false if Metadata does not contain an entry with a key of |name|.
+  // This function does not guarantee that entry's type is a vector of double.
   bool GetEntryDoubleArray(const std::string &name,
                            std::vector<double> *value) const;
 
   void AddEntryString(const std::string &name, const std::string &value);
+
+  // Returns false if Metadata does not contain an entry with a key of |name|.
+  // This function does not guarantee that entry's type is std::string.
   bool GetEntryString(const std::string &name, std::string *value) const;
 
   // Add a blob of data as an entry.
   void AddEntryBinary(const std::string &name,
                       const std::vector<uint8_t> &value);
+
+  // Returns false if Metadata does not contain an entry with a key of |name|.
+  // This function does not guarantee that entry's type is a vector of uint8_t.
   bool GetEntryBinary(const std::string &name,
                       std::vector<uint8_t> *value) const;
 

src/draco/point_cloud/point_cloud.cc

@@ -87,23 +87,32 @@ int PointCloud::AddAttribute(std::unique_ptr<PointAttribute> pa) {
 int PointCloud::AddAttribute(
     const GeometryAttribute &att, bool identity_mapping,
     AttributeValueIndex::ValueType num_attribute_values) {
-  const GeometryAttribute::Type type = att.attribute_type();
-  if (type == GeometryAttribute::INVALID)
+  auto pa = CreateAttribute(att, identity_mapping, num_attribute_values);
+  if (!pa)
     return -1;
-  const int32_t att_id =
-      AddAttribute(std::unique_ptr<PointAttribute>(new PointAttribute(att)));
+  const int32_t att_id = AddAttribute(std::move(pa));
+  return att_id;
+}
+
+std::unique_ptr<PointAttribute> PointCloud::CreateAttribute(
+    const GeometryAttribute &att, bool identity_mapping,
+    AttributeValueIndex::ValueType num_attribute_values) const {
+  if (att.attribute_type() == GeometryAttribute::INVALID)
+    return nullptr;
+  std::unique_ptr<PointAttribute> pa =
+      std::unique_ptr<PointAttribute>(new PointAttribute(att));
   // Initialize point cloud specific attribute data.
   if (!identity_mapping) {
     // First create mapping between indices.
-    attribute(att_id)->SetExplicitMapping(num_points_);
+    pa->SetExplicitMapping(num_points_);
   } else {
-    attribute(att_id)->SetIdentityMapping();
-    attribute(att_id)->Resize(num_points_);
+    pa->SetIdentityMapping();
+    pa->Resize(num_points_);
   }
   if (num_attribute_values > 0) {
-    attribute(att_id)->Reset(num_attribute_values);
+    pa->Reset(num_attribute_values);
   }
-  return att_id;
+  return pa;
 }
 
 void PointCloud::SetAttribute(int att_id, std::unique_ptr<PointAttribute> pa) {
@@ -148,7 +157,7 @@ void PointCloud::DeleteAttribute(int att_id) {
   }
 }
 
-#ifdef DRACO_ATTRIBUTE_DEDUPLICATION_SUPPORTED
+#ifdef DRACO_ATTRIBUTE_INDICES_DEDUPLICATION_SUPPORTED
 void PointCloud::DeduplicatePointIds() {
   // Hashing function for a single vertex.
   auto point_hash = [this](PointIndex p) {
@@ -214,7 +223,9 @@ void PointCloud::ApplyPointIdDeduplication(
     attribute(a)->SetExplicitMapping(num_unique_points);
   }
 }
+#endif
 
+#ifdef DRACO_ATTRIBUTE_VALUES_DEDUPLICATION_SUPPORTED
 bool PointCloud::DeduplicateAttributeValues() {
   // Go over all attributes and create mapping between duplicate entries.
   if (num_points() == 0)

src/draco/point_cloud/point_cloud.h

@@ -89,10 +89,17 @@ class PointCloud {
   // PointAttribute::SetPointMapEntry() method. |num_attribute_values| can be
   // used to specify the number of attribute values that are going to be
   // stored in the newly created attribute. Returns attribute id of the newly
-  // created attribute.
+  // created attribute or -1 in case of failure.
   int AddAttribute(const GeometryAttribute &att, bool identity_mapping,
                    AttributeValueIndex::ValueType num_attribute_values);
 
+  // Creates and returns a new attribute or nullptr in case of failure. This
+  // method is similar to AddAttribute(), except that it returns the new
+  // attribute instead of adding it to the point cloud.
+  std::unique_ptr<PointAttribute> CreateAttribute(
+      const GeometryAttribute &att, bool identity_mapping,
+      AttributeValueIndex::ValueType num_attribute_values) const;
+
   // Assigns an attribute id to a given PointAttribute. If an attribute with
   // the same attribute id already exists, it is deleted.
   virtual void SetAttribute(int att_id, std::unique_ptr<PointAttribute> pa);
@@ -101,11 +108,13 @@ class PointCloud {
   // attribute ids of all subsequent attributes.
   virtual void DeleteAttribute(int att_id);
 
-#ifdef DRACO_ATTRIBUTE_DEDUPLICATION_SUPPORTED
+#ifdef DRACO_ATTRIBUTE_VALUES_DEDUPLICATION_SUPPORTED
   // Deduplicates all attribute values (all attribute entries with the same
   // value are merged into a single entry).
   virtual bool DeduplicateAttributeValues();
+#endif
 
+#ifdef DRACO_ATTRIBUTE_INDICES_DEDUPLICATION_SUPPORTED
   // Removes duplicate point ids (two point ids are duplicate when all of their
   // attributes are mapped to the same entry ids).
   virtual void DeduplicatePointIds();
@@ -173,7 +182,7 @@ class PointCloud {
   void set_num_points(PointIndex::ValueType num) { num_points_ = num; }
 
  protected:
-#ifdef DRACO_ATTRIBUTE_DEDUPLICATION_SUPPORTED
+#ifdef DRACO_ATTRIBUTE_INDICES_DEDUPLICATION_SUPPORTED
   // Applies id mapping of deduplicated points (called by DeduplicatePointIds).
   virtual void ApplyPointIdDeduplication(
       const IndexTypeVector<PointIndex, PointIndex> &id_map,

src/draco/point_cloud/point_cloud_builder.cc

@@ -61,12 +61,14 @@ void PointCloudBuilder::SetAttributeValuesForAllPoints(
 
 std::unique_ptr<PointCloud> PointCloudBuilder::Finalize(
     bool deduplicate_points) {
-#ifdef DRACO_ATTRIBUTE_DEDUPLICATION_SUPPORTED
   if (deduplicate_points) {
+#ifdef DRACO_ATTRIBUTE_VALUES_DEDUPLICATION_SUPPORTED
     point_cloud_->DeduplicateAttributeValues();
-    point_cloud_->DeduplicatePointIds();
-  }
 #endif
+#ifdef DRACO_ATTRIBUTE_INDICES_DEDUPLICATION_SUPPORTED
+    point_cloud_->DeduplicatePointIds();
+#endif
+  }
   return std::move(point_cloud_);
 }
 

src/draco/tools/draco_decoder.cc

@@ -134,7 +134,7 @@ int main(int argc, char **argv) {
   }
 
   // Save the decoded geometry into a file.
-  // TODO(ostava): Currently only .ply and .obj are supported.
+  // TODO(fgalligan): Change extension code to look for '.'.
   const std::string extension = draco::parser::ToLower(
       options.output.size() >= 4
           ? options.output.substr(options.output.size() - 4)
@@ -167,7 +167,9 @@ int main(int argc, char **argv) {
       }
     }
   } else {
-    printf("Invalid extension of the output file. Use either .ply or .obj\n");
+    printf(
+        "Invalid extension of the output file. Use either .ply, .obj, or "
+        ".gltf\n");
     return -1;
   }
   printf("Decoded geometry saved to %s (%" PRId64 " ms to decode)\n",

src/draco/tools/draco_encoder.cc

@@ -316,7 +316,7 @@ int main(int argc, char **argv) {
           pc->GetNamedAttributeId(draco::GeometryAttribute::GENERIC, 0));
     }
   }
-#ifdef DRACO_ATTRIBUTE_DEDUPLICATION_SUPPORTED
+#ifdef DRACO_ATTRIBUTE_INDICES_DEDUPLICATION_SUPPORTED
   // If any attribute has been deleted, run deduplication of point indices again
   // as some points can be possibly combined.
   if (options.tex_coords_deleted || options.normals_deleted ||

testdata/triangle.obj

@@ -0,0 +1,5 @@
+v 0.123 0.6514 0.000001
+v 0.342 0.1234 0.000002
+v 0.156 0.8422 0.000003
+
+f 1 2 3

testdata/triangle_with_degenerate_tex_coords.obj

@@ -0,0 +1,6 @@
+v 0.123 0.6514 0.000001
+v 0.342 0.1234 0.000002
+v 0.156 0.8422 0.000003
+vt 0.0 0.0 0.0
+
+f 1/1 2/1 3/1