This example shows how to use the ambient occlusion caster.

// Copyright (c) Microsoft Corporation. 
// Licensed under the MIT license. 

#include <string>
#include <stdlib.h>
#include <filesystem>
#include <future>
#include "SimplygonLoader.h"


void AmbientOcclusionCasting(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 ambient occlusion material casting. 
	Simplygon::spAmbientOcclusionCaster sgAmbientCaster = sg->CreateAmbientOcclusionCaster();
	sgAmbientCaster->SetMappingImage( sgAggregationProcessor->GetMappingImage() );
	sgAmbientCaster->SetSourceMaterials( sgScene->GetMaterialTable() );
	sgAmbientCaster->SetSourceTextures( sgScene->GetTextureTable() );
	sgAmbientCaster->SetOutputFilePath( "AmbientTexture" );

	Simplygon::spAmbientOcclusionCasterSettings sgAmbientCasterSettings = sgAmbientCaster->GetAmbientOcclusionCasterSettings();
	sgAmbientCasterSettings->SetMaterialChannel( "Ambient" );
	sgAmbientCasterSettings->SetRaysPerPixel( 64 );
	sgAmbientCasterSettings->SetOutputImageFileFormat( Simplygon::EImageOutputFormat::PNG );

	sgAmbientCaster->RunProcessing();
	std::string ambientTextureFilePath = sgAmbientCaster->GetOutputFilePath();

	// Update scene with new casted texture. 
	Simplygon::spMaterialTable sgMaterialTable = sg->CreateMaterialTable();
	Simplygon::spTextureTable sgTextureTable = sg->CreateTextureTable();
	Simplygon::spMaterial sgMaterial = sg->CreateMaterial();
	Simplygon::spTexture sgAmbientTexture = sg->CreateTexture();
	sgAmbientTexture->SetName( "Ambient" );
	sgAmbientTexture->SetFilePath( ambientTextureFilePath.c_str() );
	sgTextureTable->AddTexture( sgAmbientTexture );

	Simplygon::spShadingTextureNode sgAmbientTextureShadingNode = sg->CreateShadingTextureNode();
	sgAmbientTextureShadingNode->SetTexCoordLevel( 0 );
	sgAmbientTextureShadingNode->SetTextureName( "Ambient" );

	sgMaterial->AddMaterialChannel( "Ambient" );
	sgMaterial->SetShadingNetwork( "Ambient", sgAmbientTextureShadingNode );

	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.");

}

void main()
{
	Simplygon::ISimplygon* sg = NULL;
	Simplygon::EErrorCodes initval = Simplygon::Initialize( &sg );
	if( initval != Simplygon::EErrorCodes::NoError )
	{
		return;
	}

	AmbientOcclusionCasting(sg);

	Simplygon::Deinitialize(sg);
}

// Copyright (c) Microsoft Corporation. 
// Licensed under the MIT license. 

using System;
using System.IO;
using System.Threading.Tasks;

public class Program
{
    static void AmbientOcclusionCasting(Simplygon.ISimplygon sg)
    {
        using (Simplygon.spSceneImporter sgSceneImporter = sg.CreateSceneImporter())
        {
            sgSceneImporter.SetImportFilePath( "../Assets/SimplygonMan/SimplygonMan.obj" );
            if(!sgSceneImporter.RunImport())
                throw new System.Exception("Failed to load SimplygonMan/SimplygonMan.obj.");
            Simplygon.spScene sgScene = sgSceneImporter.GetScene();

            // Create the aggregation processor. 
            using (Simplygon.spAggregationProcessor sgAggregationProcessor = sg.CreateAggregationProcessor())
            {
                sgAggregationProcessor.SetScene( sgScene );

                using (Simplygon.spAggregationSettings sgAggregationSettings = sgAggregationProcessor.GetAggregationSettings())
                using (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 );

                    using (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 ambient occlusion material casting. 
                string ambientTextureFilePath;
                using (Simplygon.spAmbientOcclusionCaster sgAmbientCaster = sg.CreateAmbientOcclusionCaster())
                {
                    sgAmbientCaster.SetMappingImage( sgAggregationProcessor.GetMappingImage() );
                    sgAmbientCaster.SetSourceMaterials( sgScene.GetMaterialTable() );
                    sgAmbientCaster.SetSourceTextures( sgScene.GetTextureTable() );
                    sgAmbientCaster.SetOutputFilePath( "AmbientTexture" );

                    using (Simplygon.spAmbientOcclusionCasterSettings sgAmbientCasterSettings = sgAmbientCaster.GetAmbientOcclusionCasterSettings())
                    {
                        sgAmbientCasterSettings.SetMaterialChannel( "Ambient" );
                        sgAmbientCasterSettings.SetRaysPerPixel( 64 );
                        sgAmbientCasterSettings.SetOutputImageFileFormat( Simplygon.EImageOutputFormat.PNG );
                    }

                    sgAmbientCaster.RunProcessing();
                    ambientTextureFilePath = sgAmbientCaster.GetOutputFilePath();
                }

                // Update scene with new casted texture. 
                using (Simplygon.spMaterialTable sgMaterialTable = sg.CreateMaterialTable())
                using (Simplygon.spTextureTable sgTextureTable = sg.CreateTextureTable())
                using (Simplygon.spMaterial sgMaterial = sg.CreateMaterial())
                {
                    using(Simplygon.spTexture sgAmbientTexture = sg.CreateTexture())
                    {
                        sgAmbientTexture.SetName( "Ambient" );
                        sgAmbientTexture.SetFilePath( ambientTextureFilePath );
                        sgTextureTable.AddTexture( sgAmbientTexture );
                    }

                    using(Simplygon.spShadingTextureNode sgAmbientTextureShadingNode = sg.CreateShadingTextureNode())
                    {
                        sgAmbientTextureShadingNode.SetTexCoordLevel( 0 );
                        sgAmbientTextureShadingNode.SetTextureName( "Ambient" );

                        sgMaterial.AddMaterialChannel( "Ambient" );
                        sgMaterial.SetShadingNetwork( "Ambient", sgAmbientTextureShadingNode );
                    }

                    sgMaterialTable.AddMaterial( sgMaterial );

                    sgScene.GetTextureTable().Clear();
                    sgScene.GetMaterialTable().Clear();
                    sgScene.GetTextureTable().Copy(sgTextureTable);
                    sgScene.GetMaterialTable().Copy(sgMaterialTable);
                }

            }
            using (Simplygon.spSceneExporter sgSceneExporter = sg.CreateSceneExporter())
            {
                sgSceneExporter.SetScene(sgScene);
                sgSceneExporter.SetExportFilePath( "Output.fbx" );
                if(!sgSceneExporter.RunExport())
                    throw new System.Exception("Failed to save Output.fbx.");

            }
        }
    }
    static void Main(string[] args)
    {
        using (var sg = Simplygon.Loader.InitSimplygon(out var errorCode, out var errorMessage))
        {
            if (errorCode != Simplygon.EErrorCodes.NoError)
                return;
            AmbientOcclusionCasting(sg);
        }
    }
}

# Copyright (c) Microsoft Corporation. 
# Licensed under the MIT license. 

import math
import os
import sys
import glob
import gc
import threading

from pathlib import Path
from simplygon import simplygon_loader
from simplygon import Simplygon


def AmbientOcclusionCasting(sg: Simplygon.ISimplygon):
    sgSceneImporter = sg.CreateSceneImporter()
    sgSceneImporter.SetImportFilePath( '../Assets/SimplygonMan/SimplygonMan.obj' )
    if not sgSceneImporter.RunImport():
        raise Exception('Failed to load SimplygonMan/SimplygonMan.obj.')
    sgScene = sgSceneImporter.GetScene()

    # Create the aggregation processor. 
    sgAggregationProcessor = sg.CreateAggregationProcessor()

    sgAggregationProcessor.SetScene( sgScene )

    sgAggregationSettings = sgAggregationProcessor.GetAggregationSettings()
    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 )

    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 ambient occlusion material casting. 
    sgAmbientCaster = sg.CreateAmbientOcclusionCaster()
    sgAmbientCaster.SetMappingImage( sgAggregationProcessor.GetMappingImage() )
    sgAmbientCaster.SetSourceMaterials( sgScene.GetMaterialTable() )
    sgAmbientCaster.SetSourceTextures( sgScene.GetTextureTable() )
    sgAmbientCaster.SetOutputFilePath( 'AmbientTexture' )

    sgAmbientCasterSettings = sgAmbientCaster.GetAmbientOcclusionCasterSettings()
    sgAmbientCasterSettings.SetMaterialChannel( 'Ambient' )
    sgAmbientCasterSettings.SetRaysPerPixel( 64 )
    sgAmbientCasterSettings.SetOutputImageFileFormat( Simplygon.EImageOutputFormat_PNG )

    sgAmbientCaster.RunProcessing()
    ambientTextureFilePath = sgAmbientCaster.GetOutputFilePath()

    # Update scene with new casted texture. 
    sgMaterialTable = sg.CreateMaterialTable()
    sgTextureTable = sg.CreateTextureTable()
    sgMaterial = sg.CreateMaterial()
    sgAmbientTexture = sg.CreateTexture()
    sgAmbientTexture.SetName( 'Ambient' )
    sgAmbientTexture.SetFilePath( ambientTextureFilePath )
    sgTextureTable.AddTexture( sgAmbientTexture )

    sgAmbientTextureShadingNode = sg.CreateShadingTextureNode()
    sgAmbientTextureShadingNode.SetTexCoordLevel( 0 )
    sgAmbientTextureShadingNode.SetTextureName( 'Ambient' )

    sgMaterial.AddMaterialChannel( 'Ambient' )
    sgMaterial.SetShadingNetwork( 'Ambient', sgAmbientTextureShadingNode )

    sgMaterialTable.AddMaterial( sgMaterial )

    sgScene.GetTextureTable().Clear()
    sgScene.GetMaterialTable().Clear()
    sgScene.GetTextureTable().Copy(sgTextureTable)
    sgScene.GetMaterialTable().Copy(sgMaterialTable)

    sgSceneExporter = sg.CreateSceneExporter()
    sgSceneExporter.SetScene(sgScene)
    sgSceneExporter.SetExportFilePath( 'Output.fbx' )
    if not sgSceneExporter.RunExport():
        raise Exception('Failed to save Output.fbx.')


if __name__ == '__main__':
    sg = simplygon_loader.init_simplygon()
    if sg is not None:

        AmbientOcclusionCasting(sg)

    sg = None
    gc.collect()