ENH: filamet shrinkage

Github: 2769

This feature ported from superslicer

Signed-off-by: qing.zhang <qing.zhang@bambulab.com>
Change-Id: Ic92d248aa90222e6f74530f01876cc14944f2444

resources/profiles/BBL.json

@@ -1,7 +1,7 @@
 {
     "name": "Bambulab",
     "url": "http://www.bambulab.com/Parameters/vendor/BBL.json",
-    "version": "01.10.00.11",
+    "version": "01.10.00.12",
     "force_update": "0",
     "description": "the initial version of BBL configurations",
     "machine_model_list": [

resources/profiles/BBL/filament/fdm_filament_common.json

@@ -174,6 +174,9 @@
     "filament_scarf_length":[
         "10"
     ],
+    "filament_shrink": [
+        "100%"
+    ],
     "compatible_printers": [],
     "filament_start_gcode": [
         "; Filament gcode\n{if activate_air_filtration[current_extruder] && support_air_filtration}\nM106 P3 S{during_print_exhaust_fan_speed_num[current_extruder]} \n{endif}"

src/libslic3r/Preset.cpp

@@ -879,7 +879,7 @@ static std::vector<std::string> s_Preset_filament_options {
     "nozzle_temperature_range_low", "nozzle_temperature_range_high",
     //OrcaSlicer
     "enable_pressure_advance", "pressure_advance", "chamber_temperatures","filament_notes",
-    "filament_long_retractions_when_cut","filament_retraction_distances_when_cut"
+    "filament_long_retractions_when_cut","filament_retraction_distances_when_cut","filament_shrink"
 };
 
 static std::vector<std::string> s_Preset_machine_limits_options {

src/libslic3r/Print.cpp

@@ -217,6 +217,7 @@ bool Print::invalidate_state_by_config_options(const ConfigOptionResolver & /* n
             || opt_key == "nozzle_diameter"
             || opt_key == "resolution"
             || opt_key == "precise_z_height"
+            || opt_key == "filament_shrink"
             // Spiral Vase forces different kind of slicing than the normal model:
             // In Spiral Vase mode, holes are closed and only the largest area contour is kept at each layer.
             // Therefore toggling the Spiral Vase on / off requires complete reslicing.

src/libslic3r/PrintConfig.cpp

@@ -1548,6 +1548,19 @@ void PrintConfigDef::init_fff_params()
     def->min = 0;
     def->set_default_value(new ConfigOptionFloats { 1.75 });
 
+    def = this->add("filament_shrink", coPercents);
+    def->label = L("Shrinkage");
+    // xgettext:no-c-format, no-boost-format
+    def->tooltip = L("Enter the shrinkage percentage that the filament will get after cooling (94% if you measure 94mm instead of 100mm)."
+        " The part will be scaled in xy to compensate."
+        " Only the filament used for the perimeter is taken into account."
+        "\nBe sure to allow enough space between objects, as this compensation is done after the checks.");
+    def->sidetext = L("%");
+    def->ratio_over = "";
+    def->min = 10;
+    def->mode = comAdvanced;
+    def->set_default_value(new ConfigOptionPercents{ 100 });
+
     def = this->add("filament_density", coFloats);
     def->label = L("Density");
     def->tooltip = L("Filament density. For statistics only");

src/libslic3r/PrintConfig.hpp

@@ -1118,6 +1118,7 @@ PRINT_CONFIG_CLASS_DERIVED_DEFINE(
     // BBS: move from PrintObjectConfig
     ((ConfigOptionBool,               independent_support_layer_height))
     ((ConfigOptionBool,               exclude_object))
+    ((ConfigOptionPercents,            filament_shrink))
 )
 
 // This object is mapped to Perl as Slic3r::Config::Full.

src/libslic3r/PrintObjectSlice.cpp

@@ -1016,6 +1016,21 @@ void PrintObject::slice_volumes()
         PrintObject::clip_multipart_objects,
         throw_on_cancel_callback);
 
+    // SuperSlicer: filament shrink
+    for (const std::unique_ptr<PrintRegion> &pr : m_shared_regions->all_regions) {
+        if (pr.get()) {
+            std::vector<ExPolygons> &region_polys = region_slices[pr->print_object_region_id()];
+            const size_t             extruder_id  = pr->extruder(FlowRole::frPerimeter) - 1;
+            double                   scale        = print->config().filament_shrink.values[extruder_id] * 0.01;
+            if (scale != 1) {
+                scale = 1 / scale;
+                for (ExPolygons &polys : region_polys)
+                    for (ExPolygon &poly : polys) poly.scale(scale);
+            }
+        }
+    }
+
+
     for (size_t region_id = 0; region_id < region_slices.size(); ++ region_id) {
         std::vector<ExPolygons> &by_layer = region_slices[region_id];
         for (size_t layer_id = 0; layer_id < by_layer.size(); ++ layer_id)

src/slic3r/GUI/Tab.cpp

@@ -3005,6 +3005,7 @@ void TabFilament::build()
         optgroup->append_single_option_line("enable_pressure_advance");
         optgroup->append_single_option_line("pressure_advance");
         optgroup->append_single_option_line("filament_density");
+        optgroup->append_single_option_line("filament_shrink");
         optgroup->append_single_option_line("filament_cost");
 
         //BBS