This example shows how to use the vertex color caster.
// Copyright (c) Microsoft Corporation.
// Licensed under the MIT license.
#include <string>
#include <stdlib.h>
#include <filesystem>
#include <future>
#include "SimplygonLoader.h"
void VertexColorCasting(Simplygon::ISimplygon* sg)
{
Simplygon::spSceneImporter sgSceneImporter = sg->CreateSceneImporter();
sgSceneImporter->SetImportFilePath( "../Assets/SimplygonMan/SimplygonMan.obj" );
if(!sgSceneImporter->RunImport())
throw std::exception("Failed to load SimplygonMan/SimplygonMan.obj.");
Simplygon::spScene sgScene = sgSceneImporter->GetScene();
// Create the aggregation processor.
Simplygon::spAggregationProcessor sgAggregationProcessor = sg->CreateAggregationProcessor();
sgAggregationProcessor->SetScene( sgScene );
Simplygon::spAggregationSettings sgAggregationSettings = sgAggregationProcessor->GetAggregationSettings();
Simplygon::spMappingImageSettings sgMappingImageSettings = sgAggregationProcessor->GetMappingImageSettings();
// Merge all geometries into a single geometry.
sgAggregationSettings->SetMergeGeometries( true );
// Generates a mapping image which is used after the aggregation to cast new materials to the new
// aggregated object.
sgMappingImageSettings->SetGenerateMappingImage( true );
sgMappingImageSettings->SetApplyNewMaterialIds( true );
sgMappingImageSettings->SetGenerateTangents( true );
sgMappingImageSettings->SetUseFullRetexturing( true );
Simplygon::spMappingImageOutputMaterialSettings sgOutputMaterialSettings = sgMappingImageSettings->GetOutputMaterialSettings(0);
// Setting the size of the output material for the mapping image. This will be the output size of the
// textures when we do material casting in a later stage.
sgOutputMaterialSettings->SetTextureWidth( 2048 );
sgOutputMaterialSettings->SetTextureHeight( 2048 );
// Start the aggregation process.
sgAggregationProcessor->RunProcessing();
// Setup and run the vertex color material casting.
Simplygon::spVertexColorCaster sgDiffuseCaster = sg->CreateVertexColorCaster();
sgDiffuseCaster->SetMappingImage( sgAggregationProcessor->GetMappingImage() );
sgDiffuseCaster->SetSourceMaterials( sgScene->GetMaterialTable() );
sgDiffuseCaster->SetSourceTextures( sgScene->GetTextureTable() );
sgDiffuseCaster->SetScene( sgScene );
Simplygon::spVertexColorCasterSettings sgDiffuseCasterSettings = sgDiffuseCaster->GetVertexColorCasterSettings();
sgDiffuseCasterSettings->SetMaterialChannel( "Diffuse" );
sgDiffuseCasterSettings->SetOutputColorName( "DiffuseAsVertexColor" );
sgDiffuseCaster->RunProcessing();
// Update scene with new casted vertex colors.
Simplygon::spMaterialTable sgMaterialTable = sg->CreateMaterialTable();
Simplygon::spTextureTable sgTextureTable = sg->CreateTextureTable();
Simplygon::spMaterial sgMaterial = sg->CreateMaterial();
Simplygon::spShadingVertexColorNode sgDiffuseAsVertexColorShadingNode = sg->CreateShadingVertexColorNode();
sgDiffuseAsVertexColorShadingNode->SetVertexColorSet( "DiffuseAsVertexColor" );
sgMaterial->AddMaterialChannel( "DiffuseAsVertexColor" );
sgMaterial->SetShadingNetwork( "DiffuseAsVertexColor", sgDiffuseAsVertexColorShadingNode );
sgMaterialTable->AddMaterial( sgMaterial );
sgScene->GetTextureTable()->Clear();
sgScene->GetMaterialTable()->Clear();
sgScene->GetTextureTable()->Copy(sgTextureTable);
sgScene->GetMaterialTable()->Copy(sgMaterialTable);
Simplygon::spSceneExporter sgSceneExporter = sg->CreateSceneExporter();
sgSceneExporter->SetScene(sgScene);
sgSceneExporter->SetExportFilePath( "Output.fbx" );
if(!sgSceneExporter->RunExport())
throw std::exception("Failed to save Output.fbx.");
}
int main()
{
Simplygon::ISimplygon* sg = NULL;
Simplygon::EErrorCodes initval = Simplygon::Initialize( &sg );
if( initval != Simplygon::EErrorCodes::NoError )
{
return int(initval);
}
VertexColorCasting(sg);
Simplygon::Deinitialize(sg);
return 0;
}