This example shows how to use the Remeshing processor with a process selection set.

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

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


void RunRemeshing(Simplygon::ISimplygon* sg)
{
	Simplygon::spSceneImporter sgSceneImporter = sg->CreateSceneImporter();
	sgSceneImporter->SetImportFilePath( "../Assets/ObscuredTeapot/ObscuredTeapot.obj" );
	if(!sgSceneImporter->RunImport())
		throw std::exception("Failed to load ObscuredTeapot/ObscuredTeapot.obj.");
	Simplygon::spScene sgScene = sgSceneImporter->GetScene();

	// Create the remeshing processor. 
	Simplygon::spRemeshingProcessor sgRemeshingProcessor = sg->CreateRemeshingProcessor();

	sgRemeshingProcessor->SetScene( sgScene );

	Simplygon::spRemeshingSettings sgRemeshingSettings = sgRemeshingProcessor->GetRemeshingSettings();

	// Add a selection set to the scene with all nodes which should be remeshed. 
	Simplygon::spSelectionSetTable sgSceneSelectionSetTable = sgScene->GetSelectionSetTable();
	Simplygon::spSelectionSet sgRemeshingTargetSelectionSet = sg->CreateSelectionSet();
	sgRemeshingTargetSelectionSet->SetName("RemeshingTarget");
	Simplygon::spSceneNode sgRootTeapot001 = sgScene->GetNodeFromPath("Root/Teapot001");
	if (!sgRootTeapot001.IsNull())
		sgRemeshingTargetSelectionSet->AddItem(sgRootTeapot001->GetNodeGUID());
	sgSceneSelectionSetTable->AddSelectionSet(sgRemeshingTargetSelectionSet);

	// Set on-screen size target for remeshing. 
	sgRemeshingSettings->SetOnScreenSize( 300 );

	// Use the selection set created earlier. 
	sgRemeshingSettings->SetProcessSelectionSetName( "RemeshingTarget" );

	// Start the remeshing process. 
	sgRemeshingProcessor->RunProcessing();

	// Remove original materials and textures from the scene as the remeshed object has a new UV. 
	sgScene->GetTextureTable()->Clear();
	sgScene->GetMaterialTable()->Clear();

	Simplygon::spSceneExporter  sgSceneExporter = sg->CreateSceneExporter();
	sgSceneExporter->SetScene(sgScene);
	sgSceneExporter->SetExportFilePath( "RemeshingOutput.fbx" );
	if(!sgSceneExporter->RunExport())
		throw std::exception("Failed to save RemeshingOutput.fbx.");

}

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

	RunRemeshing(sg);

	Simplygon::Deinitialize(sg);

	return 0;
}

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

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

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

            // Create the remeshing processor. 
            using (Simplygon.spRemeshingProcessor sgRemeshingProcessor = sg.CreateRemeshingProcessor())
            {
                sgRemeshingProcessor.SetScene( sgScene );

                using (Simplygon.spRemeshingSettings sgRemeshingSettings = sgRemeshingProcessor.GetRemeshingSettings())
                {
                    // Add a selection set to the scene with all nodes which should be remeshed. 
                    using (Simplygon.spSelectionSetTable sgSceneSelectionSetTable = sgScene.GetSelectionSetTable())
                    using (Simplygon.spSelectionSet sgRemeshingTargetSelectionSet = sg.CreateSelectionSet())
                    {
                        sgRemeshingTargetSelectionSet.SetName("RemeshingTarget");
                        Simplygon.spSceneNode sgRootTeapot001 = sgScene.GetNodeFromPath("Root/Teapot001");
                        if (!sgRootTeapot001.IsNull())
                            sgRemeshingTargetSelectionSet.AddItem(sgRootTeapot001.GetNodeGUID());
                        sgSceneSelectionSetTable.AddSelectionSet(sgRemeshingTargetSelectionSet);
                    }

                    // Set on-screen size target for remeshing. 
                    sgRemeshingSettings.SetOnScreenSize( 300 );

                    // Use the selection set created earlier. 
                    sgRemeshingSettings.SetProcessSelectionSetName( "RemeshingTarget" );

                }
                // Start the remeshing process. 
                sgRemeshingProcessor.RunProcessing();

                // Remove original materials and textures from the scene as the remeshed object has a new UV. 
                sgScene.GetTextureTable().Clear();
                sgScene.GetMaterialTable().Clear();

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

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

        return 0;
    }
}

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

    # Create the remeshing processor. 
    sgRemeshingProcessor = sg.CreateRemeshingProcessor()

    sgRemeshingProcessor.SetScene( sgScene )

    sgRemeshingSettings = sgRemeshingProcessor.GetRemeshingSettings()

    # Add a selection set to the scene with all nodes which should be remeshed. 
    sgSceneSelectionSetTable = sgScene.GetSelectionSetTable()
    sgRemeshingTargetSelectionSet = sg.CreateSelectionSet()
    sgRemeshingTargetSelectionSet.SetName("RemeshingTarget")
    sgRootTeapot001 = sgScene.GetNodeFromPath('Root/Teapot001')
    if sgRootTeapot001 is not None:
        sgRemeshingTargetSelectionSet.AddItem(sgRootTeapot001.GetNodeGUID())
    sgSceneSelectionSetTable.AddSelectionSet(sgRemeshingTargetSelectionSet)

    # Set on-screen size target for remeshing. 
    sgRemeshingSettings.SetOnScreenSize( 300 )

    # Use the selection set created earlier. 
    sgRemeshingSettings.SetProcessSelectionSetName( "RemeshingTarget" )

    # Start the remeshing process. 
    sgRemeshingProcessor.RunProcessing()

    # Remove original materials and textures from the scene as the remeshed object has a new UV. 
    sgScene.GetTextureTable().Clear()
    sgScene.GetMaterialTable().Clear()

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


if __name__ == '__main__':
    sg = simplygon_loader.init_simplygon()
    if sg is None:
        exit(Simplygon.GetLastInitializationError())

    RunRemeshing(sg)

    sg = None
    gc.collect()