This example shows how to use the Aggregation processor with a visibility camera.
// Copyright (c) Microsoft Corporation.
// Licensed under the MIT license.
#include <string>
#include <stdlib.h>
#include <filesystem>
#include <future>
#include "SimplygonLoader.h"
void RunAggregation(Simplygon::ISimplygon* sg)
{
Simplygon::spSceneImporter sgSceneImporter = sg->CreateSceneImporter();
sgSceneImporter->SetImportFilePath( "../Assets/ObscuredTeapot/Teapot.obj" );
if(!sgSceneImporter->RunImport())
throw std::exception("Failed to load ObscuredTeapot/Teapot.obj.");
Simplygon::spScene sgScene = sgSceneImporter->GetScene();
// Create the aggregation processor.
Simplygon::spAggregationProcessor sgAggregationProcessor = sg->CreateAggregationProcessor();
sgAggregationProcessor->SetScene( sgScene );
Simplygon::spAggregationSettings sgAggregationSettings = sgAggregationProcessor->GetAggregationSettings();
Simplygon::spVisibilitySettings sgVisibilitySettings = sgAggregationProcessor->GetVisibilitySettings();
// Merge all geometries into a single geometry.
sgAggregationSettings->SetMergeGeometries( true );
// Add a camera to the scene. We'll use this later as a visibility camera.
Simplygon::spSelectionSetTable sgSceneSelectionSetTable = sgScene->GetSelectionSetTable();
Simplygon::spSelectionSet sgCameraSelectionSet = sg->CreateSelectionSet();
sgCameraSelectionSet->SetName("Camera");
Simplygon::spSceneCamera sgCameraSceneCamera = sg->CreateSceneCamera();
sgCameraSceneCamera->SetCustomSphereCameraPath(4, 90, 180, 90);
sgScene->GetRootNode()->AddChild(sgCameraSceneCamera);
sgCameraSelectionSet->AddItem(sgCameraSceneCamera->GetNodeGUID());
sgSceneSelectionSetTable->AddSelectionSet(sgCameraSelectionSet);
// Use the camera previously added.
sgVisibilitySettings->SetCameraSelectionSetName( "Camera" );
// Enabled GPU based visibility calculations.
sgVisibilitySettings->SetComputeVisibilityMode( Simplygon::EComputeVisibilityMode::DirectX );
// Disabled conservative mode.
sgVisibilitySettings->SetConservativeMode( false );
// Remove all non visible geometry.
sgVisibilitySettings->SetCullOccludedGeometry( true );
// Skip filling nonvisible regions.
sgVisibilitySettings->SetFillNonVisibleAreaThreshold( 0.0f );
// Don't remove non occluding triangles.
sgVisibilitySettings->SetRemoveTrianglesNotOccludingOtherTriangles( false );
// Remove all back facing triangles.
sgVisibilitySettings->SetUseBackfaceCulling( true );
// Don't use visibility weights.
sgVisibilitySettings->SetUseVisibilityWeightsInReducer( false );
// Start the aggregation process.
sgAggregationProcessor->RunProcessing();
Simplygon::spSceneExporter sgSceneExporter = sg->CreateSceneExporter();
sgSceneExporter->SetScene(sgScene);
sgSceneExporter->SetExportFilePath( "AggregationOutput.fbx" );
if(!sgSceneExporter->RunExport())
throw std::exception("Failed to save AggregationOutput.fbx.");
}
int main()
{
Simplygon::ISimplygon* sg = NULL;
Simplygon::EErrorCodes initval = Simplygon::Initialize( &sg );
if( initval != Simplygon::EErrorCodes::NoError )
{
return int(initval);
}
RunAggregation(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 RunAggregation(Simplygon.ISimplygon sg)
{
using (Simplygon.spSceneImporter sgSceneImporter = sg.CreateSceneImporter())
{
sgSceneImporter.SetImportFilePath( "../Assets/ObscuredTeapot/Teapot.obj" );
if(!sgSceneImporter.RunImport())
throw new System.Exception("Failed to load ObscuredTeapot/Teapot.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.spVisibilitySettings sgVisibilitySettings = sgAggregationProcessor.GetVisibilitySettings())
{
// Merge all geometries into a single geometry.
sgAggregationSettings.SetMergeGeometries( true );
// Add a camera to the scene. We'll use this later as a visibility camera.
using (Simplygon.spSelectionSetTable sgSceneSelectionSetTable = sgScene.GetSelectionSetTable())
using (Simplygon.spSelectionSet sgCameraSelectionSet = sg.CreateSelectionSet())
{
sgCameraSelectionSet.SetName("Camera");
using (Simplygon.spSceneCamera sgCameraSceneCamera = sg.CreateSceneCamera())
{
sgCameraSceneCamera.SetCustomSphereCameraPath(4, 90, 180, 90);
sgScene.GetRootNode().AddChild(sgCameraSceneCamera);
sgCameraSelectionSet.AddItem(sgCameraSceneCamera.GetNodeGUID());
}
sgSceneSelectionSetTable.AddSelectionSet(sgCameraSelectionSet);
}
// Use the camera previously added.
sgVisibilitySettings.SetCameraSelectionSetName( "Camera" );
// Enabled GPU based visibility calculations.
sgVisibilitySettings.SetComputeVisibilityMode( Simplygon.EComputeVisibilityMode.DirectX );
// Disabled conservative mode.
sgVisibilitySettings.SetConservativeMode( false );
// Remove all non visible geometry.
sgVisibilitySettings.SetCullOccludedGeometry( true );
// Skip filling nonvisible regions.
sgVisibilitySettings.SetFillNonVisibleAreaThreshold( 0.0f );
// Don't remove non occluding triangles.
sgVisibilitySettings.SetRemoveTrianglesNotOccludingOtherTriangles( false );
// Remove all back facing triangles.
sgVisibilitySettings.SetUseBackfaceCulling( true );
// Don't use visibility weights.
sgVisibilitySettings.SetUseVisibilityWeightsInReducer( false );
}
// Start the aggregation process.
sgAggregationProcessor.RunProcessing();
}
using (Simplygon.spSceneExporter sgSceneExporter = sg.CreateSceneExporter())
{
sgSceneExporter.SetScene(sgScene);
sgSceneExporter.SetExportFilePath( "AggregationOutput.fbx" );
if(!sgSceneExporter.RunExport())
throw new System.Exception("Failed to save AggregationOutput.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;
RunAggregation(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 RunAggregation(sg: Simplygon.ISimplygon):
sgSceneImporter = sg.CreateSceneImporter()
sgSceneImporter.SetImportFilePath( '../Assets/ObscuredTeapot/Teapot.obj' )
if not sgSceneImporter.RunImport():
raise Exception('Failed to load ObscuredTeapot/Teapot.obj.')
sgScene = sgSceneImporter.GetScene()
# Create the aggregation processor.
sgAggregationProcessor = sg.CreateAggregationProcessor()
sgAggregationProcessor.SetScene( sgScene )
sgAggregationSettings = sgAggregationProcessor.GetAggregationSettings()
sgVisibilitySettings = sgAggregationProcessor.GetVisibilitySettings()
# Merge all geometries into a single geometry.
sgAggregationSettings.SetMergeGeometries( True )
# Add a camera to the scene. We'll use this later as a visibility camera.
sgSceneSelectionSetTable = sgScene.GetSelectionSetTable()
sgCameraSelectionSet = sg.CreateSelectionSet()
sgCameraSelectionSet.SetName('Camera')
sgCameraSceneCamera = sg.CreateSceneCamera()
sgCameraSceneCamera.SetCustomSphereCameraPath(4, 90, 180, 90)
sgScene.GetRootNode().AddChild(sgCameraSceneCamera)
sgCameraSelectionSet.AddItem(sgCameraSceneCamera.GetNodeGUID())
sgSceneSelectionSetTable.AddSelectionSet(sgCameraSelectionSet)
# Use the camera previously added.
sgVisibilitySettings.SetCameraSelectionSetName( "Camera" )
# Enabled GPU based visibility calculations.
sgVisibilitySettings.SetComputeVisibilityMode( Simplygon.EComputeVisibilityMode_DirectX )
# Disabled conservative mode.
sgVisibilitySettings.SetConservativeMode( False )
# Remove all non visible geometry.
sgVisibilitySettings.SetCullOccludedGeometry( True )
# Skip filling nonvisible regions.
sgVisibilitySettings.SetFillNonVisibleAreaThreshold( 0.0 )
# Don't remove non occluding triangles.
sgVisibilitySettings.SetRemoveTrianglesNotOccludingOtherTriangles( False )
# Remove all back facing triangles.
sgVisibilitySettings.SetUseBackfaceCulling( True )
# Don't use visibility weights.
sgVisibilitySettings.SetUseVisibilityWeightsInReducer( False )
# Start the aggregation process.
sgAggregationProcessor.RunProcessing()
sgSceneExporter = sg.CreateSceneExporter()
sgSceneExporter.SetScene(sgScene)
sgSceneExporter.SetExportFilePath( 'AggregationOutput.fbx' )
if not sgSceneExporter.RunExport():
raise Exception('Failed to save AggregationOutput.fbx.')
if __name__ == '__main__':
sg = simplygon_loader.init_simplygon()
if sg is None:
exit(Simplygon.GetLastInitializationError())
RunAggregation(sg)
sg = None
gc.collect()