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102 lines
3.8 KiB
C++
102 lines
3.8 KiB
C++
// Copyright 2016 The Draco Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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#ifndef DRACO_JAVASCRIPT_EMSCRITPEN_WEBIDL_WRAPPER_H_
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#define DRACO_JAVASCRIPT_EMSCRITPEN_WEBIDL_WRAPPER_H_
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#include <vector>
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#include "compression/config/compression_shared.h"
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#include "core/decoder_buffer.h"
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#include "mesh/mesh.h"
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#include "point_cloud/point_attribute.h"
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typedef draco::GeometryAttribute draco_GeometryAttribute;
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typedef draco_GeometryAttribute::Type draco_GeometryAttribute_Type;
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typedef draco::EncodedGeometryType draco_EncodedGeometryType;
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// To generate Draco JabvaScript bindings you must have emscripten installed.
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// Then run make -f Makefile.emcc jslib.
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namespace draco {
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class DracoFloat32Array {
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public:
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DracoFloat32Array();
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float GetValue(int index) const;
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// In case |values| is nullptr, the data is allocated but not initialized.
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bool SetValues(const float *values, int count);
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// Directly sets a value for a specific index. The array has to be already
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// allocated at this point (using SetValues() method).
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void SetValue(int index, float val) { values_[index] = val; }
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private:
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std::vector<float> values_;
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};
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class DracoInt32Array {
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public:
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DracoInt32Array();
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int GetValue(int index) const;
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bool SetValues(const int *values, int count);
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private:
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std::vector<int> values_;
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};
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// Class used by emscripten WebIDL Binder [1] to wrap calls to decode Draco
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// data.
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// [1]http://kripken.github.io/emscripten-site/docs/porting/connecting_cpp_and_javascript/WebIDL-Binder.html
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class WebIDLWrapper {
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public:
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WebIDLWrapper();
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// Returns the geometry type stored in the |in_buffer|. Return values can be
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// INVALID_GEOMETRY_TYPE, POINT_CLOUD, or MESH.
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draco_EncodedGeometryType GetEncodedGeometryType(DecoderBuffer *in_buffer);
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// Decodes a point cloud from the provided buffer. The caller is responsible
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// for deleting the PointCloud pointer.
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static PointCloud *DecodePointCloudFromBuffer(DecoderBuffer *in_buffer);
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// Decodes a triangular mesh from the provided buffer. The caller is
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// responsible for deleting the Mesh pointer.
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static Mesh *DecodeMeshFromBuffer(DecoderBuffer *in_buffer);
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// Returns an attribute id for the first attribute of a given type.
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long GetAttributeId(const PointCloud &pc, draco_GeometryAttribute_Type type);
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// Returns a PointAttribute pointer from |att_id| index.
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static const PointAttribute *GetAttribute(const PointCloud &pc, long att_id);
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// Returns Mesh::Face values in |out_values| from |face_id| index.
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static bool GetFaceFromMesh(const Mesh &m, FaceIndex::ValueType face_id,
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DracoInt32Array *out_values);
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// Returns float attribute values in |out_values| from |entry_index| index.
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static bool GetAttributeFloat(const PointAttribute &pa,
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AttributeValueIndex::ValueType entry_index,
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DracoFloat32Array *out_values);
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// Returns float attribute values for all point ids of the point cloud.
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// I.e., the |out_values| is going to contain m.num_points() entries.
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static bool GetAttributeFloatForAllPoints(const PointCloud &pc,
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const PointAttribute &pa,
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DracoFloat32Array *out_values);
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};
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} // namespace draco
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#endif // DRACO_JAVASCRIPT_EMSCRITPEN_WEBIDL_WRAPPER_H_
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