static bool RunExample(ISimplygonSDK sdk)
{
// run twice per LOD
for (int i = 0; i < num_lods; ++i)
{
Console.WriteLine("\n-------------------------------------------\n");
Console.WriteLine("LOD {0} of {1}.", i + 1, num_lods);
Console.WriteLine("\n-------------------------------------------\n");
//Remesh with constant pixel size, but different merge distances
Console.WriteLine("\nRunning with merge distance = {0}...\n", merge_distances[0]);
Console.WriteLine("------------------------------------\n");
if (!run_remeshing_for_lod(sdk, i, merge_distances[0]))
{
return(false);
}
Console.WriteLine("\nRunning with merge distance = {0}...\n", merge_distances[1]);
Console.WriteLine("--------------\n");
if (!run_remeshing_for_lod(sdk, i, merge_distances[1]))
{
return(false);
}
Console.WriteLine("\n");
}
return(true);
}
static void Main(string[] args)
{
String licensePath = @"C:\Users\David\AppData\Local\DonyaLabs\SimplygonSDK\Simplygon_5_license.dat";
if (!File.Exists(licensePath))
{
Console.WriteLine("License file not found");
}
string licenseString = File.ReadAllText(licensePath);
SimplygonSDK.AddSearchPath(@"c:\Program Files\SimplygonSDK");
int res = SimplygonSDK.Initialize(null, licenseString);
if (res != 0)
{
Console.WriteLine("Simplygon inititialization failed with error: " + res);
return;
}
ISimplygonSDK sdk = SimplygonSDK.GetSDK();
if (sdk == null)
{
return;
}
Console.WriteLine("Simplygon version: " + sdk.GetVersion());
RunHighQualityReduction(sdk, @"c:\temp\out");
}
static void Main(string[] args)
{
ISimplygonSDK sdk = Example.Example.InitExample();
if (sdk == null)
{
return;
}
sdk.SetGlobalSetting("DefaultTBNType", (int)TangentSpaceMethod.SG_TANGENTSPACEMETHOD_ORTHONORMAL);
RunExample(sdk);
}
// This function stores the data into an .obj file
static bool save_geometry_to_file(ISimplygonSDK sdk, spScene scene, string filepath)
{
// create the wavefront exporter
spWavefrontExporter exp = sdk.CreateWavefrontExporter();
spGeometryData geom = Utils.SimplygonCast <spSceneMesh>(scene.GetRootNode().GetChild(0), false).GetGeometry();
// set the geometry
exp.SetSingleGeometry(geom);
// set file path
exp.SetExportFilePath(filepath);
// export to file
return(exp.RunExport());
}
static void Main(string[] args)
{
ISimplygonSDK sdk = Example.Example.InitExample();
if (sdk == null)
{
return;
}
string userProfileDirectory = System.Environment.GetEnvironmentVariable("USERPROFILE");
string assetRoot = userProfileDirectory + @"/Documents/SimplygonSDK/SourceCode/Assets/";
string tempRoot = @"../../../../../temp/";
Console.WriteLine("Running HQ Reduction");
RunHighQualityReduction(sdk, assetRoot + "SimplygonMan.obj", tempRoot + "SimplygonMan_HQ_LOD");
Console.WriteLine("Running Material Reduction");
RunReductionWithTextureCasting(sdk, assetRoot + "SimplygonMan.obj", "SimplygonMan_Rebaked_Materials_LOD");
Console.WriteLine("Running Cascaded LOD Reduction");
RunCascadedLodChainReduction(sdk, assetRoot + "SimplygonMan.obj", "SimplygonMan_Cascade_LOD1", "SimplygonMan_Cascade_LOD2", "SimplygonMan_Cascade_LOD3");
}
static void RunExampleRemoveBonesFromSimplygonScene(ISimplygonSDK sdk)
{
string userProfileDirectory = System.Environment.GetEnvironmentVariable("USERPROFILE");
string assetRoot = userProfileDirectory + @"/Documents/SimplygonSDK/SourceCode/Assets/RiggedSimplygonMan/";
string tempRoot = @"../../../../../temp/";
spScene scene = sdk.CreateScene();
if (!scene.LoadFromFile(assetRoot + "RiggedSimplygonMan.sgscene"))
{
Console.WriteLine("Failed to load scene");
return;
}
Console.WriteLine("Reducing bones in RiggedSimplygonMan...\n");
scene.CalculateExtents();
//Run reduction processor with zero max_deviation - meaning that the
//mesh won't be reduced.
Console.WriteLine("By 20%%\n");
RunReductionProcessing(sdk, scene, 0.0f, 0.8f);
if (!scene.SaveToFile(tempRoot + "RiggedSimplygonMan_BoneLOD_80.sgscene"))
{
Console.WriteLine("Failed to save scene");
return;
}
Console.WriteLine("By 50%%\n");
RunReductionProcessing(sdk, scene, 0.0f, 0.5f);
if (!scene.SaveToFile(tempRoot + "RiggedSimplygonMan_BoneLOD_50.sgscene"))
{
Console.WriteLine("Failed to save scene");
return;
}
Console.WriteLine("By 80%%\n");
RunReductionProcessing(sdk, scene, 0.0f, 0.2f);
if (!scene.SaveToFile(tempRoot + "RiggedSimplygonMan_BoneLOD_20.sgscene"))
{
Console.WriteLine("Failed to save scene");
return;
}
}
static void Main(string[] args)
{
// init SDK
ISimplygonSDK sdk = Example.Example.InitExample();
if (sdk == null)
{
return;
}
//MoveDirToExecutablePath(_T("RiggedSimplygonMan"), _T(""));
// Run the example code
RunExampleGenerateAndBendHelix(sdk);
RunExampleRemoveBonesFromSimplygonScene(sdk);
// deinit SDK
//DeinitExample();
return;
}
static void RunExampleGenerateAndBendHelix(ISimplygonSDK sdk)
{
// generate the initial tube geometry
Console.WriteLine("Generating helix-shaped tube...\n");
spScene scene = generate_simple_tube(sdk);
spScene sceneCpy = generate_simple_tube(sdk);
string tempRoot = @"../../../../../temp/";
string outputPath = tempRoot + "original_tube.obj";
//store the original data to a wavefront file
save_geometry_to_file(sdk, scene, outputPath);
//take a copy of the original geometry and do a bend and save to file
bend_geometry(sdk, sceneCpy);
outputPath = tempRoot + "original_bended_tube.obj";
save_geometry_to_file(sdk, sceneCpy, outputPath);
// now, reduce the geometry, using max deviation
Console.WriteLine("Reducing using max deviation (Bone reduced by half)...\n");
RunReductionProcessing(sdk, scene, 1.0f, 0.5f);
outputPath = tempRoot + "reduced_tube.obj";
// store the reduced geometry to a wavefront file
save_geometry_to_file(sdk, scene, outputPath);
// now, bend the reduced tube using the blend weights
Console.WriteLine("Bending the reduced tube using blend...\n");
bend_geometry(sdk, scene);
outputPath = tempRoot + "bended_reduced_tube.obj";
// store the reduced geometry to a wavefront file
save_geometry_to_file(sdk, scene, outputPath);
}
static void RunHighQualityReduction(ISimplygonSDK sdk, string readFrom, string writeTo)
{
spWavefrontImporter objReader = sdk.CreateWavefrontImporter();
objReader.SetExtractGroups(false); //This makes the .obj reader import into a single geometry object instead of multiple
objReader.SetImportFilePath(readFrom);
if (!objReader.RunImport())
{
Console.WriteLine("Failed to read: " + readFrom);
return;
}
spGeometryData originalGeom = objReader.GetFirstGeometry(); //Only contains a single geom, so "first" is fine
spMaterialTable originalMaterials = objReader.GetMaterials();
//Create a copy of the original geometry on which we will run the reduction
spGeometryData lodGeom = originalGeom.NewCopy(true);
// Create the reduction-processor, and set the geometry to reduce
spReductionProcessor reductionProcessor = sdk.CreateReductionProcessor();
reductionProcessor.SetGeometry(lodGeom);
///////////////////////////////////////////////////////////////////////////////////////////////
// SETTINGS - Most of these are set to the same value by default, but are set anyway for clarity
// The reduction settings object contains settings pertaining to the actual decimation
spReductionSettings reductionSettings = reductionProcessor.GetReductionSettings();
reductionSettings.SetEnablePreprocessing(true); //This enables the pre-processing block, which contains welding and t-junction removal
reductionSettings.SetEnablePostprocessing(true); //This enables the post-processing block, which contains normal recalculation and mapping image generation
reductionSettings.SetKeepSymmetry(true); //Try, when possible to reduce symmetrically
reductionSettings.SetUseAutomaticSymmetryDetection(true); //Auto-detect the symmetry plane, if one exists. Can, if required, be set manually instead.
reductionSettings.SetUseHighQualityNormalCalculation(true); //Drastically increases the quality of the LODs normals, at the cost of extra processing time.
reductionSettings.SetReductionHeuristics((uint)ReductionHeuristics.SG_REDUCTIONHEURISTICS_CONSISTENT); //Choose between "fast" and "consistent" processing. Fast will look as good, but may cause inconsistent
//triangle counts when comparing MaxDeviation targets to the corresponding percentage targets.
// The reducer uses a feature flags mask to tell it what kind of borders to respect during reduction.
FeatureFlags featureFlagsMask = 0;
featureFlagsMask |= FeatureFlags.SG_FEATUREFLAGS_GROUP; //Respect borders between group ids
featureFlagsMask |= FeatureFlags.SG_FEATUREFLAGS_MATERIAL; //Respect borders between material ids
featureFlagsMask |= FeatureFlags.SG_FEATUREFLAGS_TEXTURE0; //Respect discontinuities in the first texcoord field
featureFlagsMask |= FeatureFlags.SG_FEATUREFLAGS_SHADING; //Respect hard shading borders
reductionSettings.SetFeatureFlags((uint)featureFlagsMask);
// The reducer uses importance weights for all features to decide where and how to reduce.
// These are advanced settings and should only be changed if you have some specific reduction requirement
/*reductionSettings.SetShadingImportance(2.f); //This would make the shading twice as important to the reducer as the other features.*/
// The actual reduction triangle target are controlled by these three settings
reductionSettings.SetStopCondition((uint)StopCondition.SG_STOPCONDITION_EITHER_IS_REACHED); //The reduction stops when either of the targets is reached
reductionSettings.SetReductionRatio(0.5f); //Stops at 50% of the original triangle count
reductionSettings.SetMaxDeviation(SimplygonSDK.REAL_MAX); //Stops when an error of the specified size has been reached. As set here it never happens.
//This condition corresponds to the on-screen size target presented in the Simplygon GUI, with a simple formula to convert between the two.
// The repair settings object contains settings for the pre-processing block
spRepairSettings repairSettings = reductionProcessor.GetRepairSettings();
repairSettings.SetTjuncDist(0.0f); //Removes t-junctions with distance 0.0f
repairSettings.SetWeldDist(0.0f); //Welds overlapping vertices
// The normal calculation settings deal with the normal-specific reduction settings
spNormalCalculationSettings normalSettings = reductionProcessor.GetNormalCalculationSettings();
normalSettings.SetReplaceNormals(false); //If true, this will turn off normal handling in the reducer and recalculate them all afterwards instead.
//If false, the reducer will try to preserve the original normals as well as possible
/*normalSettings.SetHardEdgeAngle( 60.f ); //If the normals are recalculated, this sets the hard-edge angle.*/
//END SETTINGS
///////////////////////////////////////////////////////////////////////////////////////////////
// Run the actual processing. After this, the set geometry will have been reduced according to the settings
reductionProcessor.RunProcessing();
//Create an .obj exporter to save our result
spWavefrontExporter objExporter = sdk.CreateWavefrontExporter();
// Do the actual exporting
objExporter.SetExportFilePath(writeTo + ".obj");
objExporter.SetSingleGeometry(lodGeom); //This is the geometry we set as the processing geom of the reducer
objExporter.SetMaterials(originalMaterials); //Same material set as input
if (!objExporter.RunExport())
{
Console.WriteLine("Failed to write target file");
}
//Done! LOD created.
}
static void RunCascadedLodChainReduction(ISimplygonSDK sdk, string readFrom, string writeToLod1, string writeToLod2, string writeToLod3)
{
// Load input geometry from file
spWavefrontImporter objReader = sdk.CreateWavefrontImporter();
objReader.SetExtractGroups(false); //This makes the .obj reader import into a single geometry object instead of multiple
objReader.SetImportFilePath(readFrom);
if (!objReader.RunImport())
{
return;
}
// Get geometry and materials from importer
spGeometryData originalGeometry = objReader.GetFirstGeometry(); //Only contains a single geom, so "first" is fine
spMaterialTable originalMaterialTable = objReader.GetMaterials();
//Create a copy of the original geometry on which we will run the reduction
spGeometryData lodGeometry = originalGeometry.NewCopy(true);
// Create the reduction-processor, and set the geometry to reduce
spReductionProcessor reductionProcessor = sdk.CreateReductionProcessor();
reductionProcessor.SetGeometry(lodGeometry);
///////////////////////////////////////////////////////////////////////////////////////////////
// SETTINGS
// The reduction settings object contains settings pertaining to the actual decimation
spReductionSettings reductionSettings = reductionProcessor.GetReductionSettings();
reductionSettings.SetReductionHeuristics((uint)ReductionHeuristics.SG_REDUCTIONHEURISTICS_FAST); //Choose between "fast" and "consistent" processing.
// The normal calculation settings deal with the normal-specific reduction settings
spNormalCalculationSettings normalSettings = reductionProcessor.GetNormalCalculationSettings();
normalSettings.SetReplaceNormals(true); //If true, this will turn off normal handling in the reducer and recalculate them all afterwards instead.
normalSettings.SetHardEdgeAngle(70.0f); //If the normals are recalculated, this sets the hard-edge angle.
// The actual reduction triangle target are controlled by these three settings
reductionSettings.SetStopCondition((uint)StopCondition.SG_STOPCONDITION_EITHER_IS_REACHED); //The reduction stops when either of the targets is reached
reductionSettings.SetReductionRatio(0.0f); //Never stop at a triangle percentage, will hit MaxDeviation instead.
//END SETTINGS
///////////////////////////////////////////////////////////////////////////////////////////////
//Create an .obj exporter to save our result
spWavefrontExporter objExporter = sdk.CreateWavefrontExporter();
objExporter.SetSingleGeometry(lodGeometry); //This is the geometry we set as the processing geom of the reducer
objExporter.SetMaterials(originalMaterialTable); //Same materials as original
//Set reduction targets using on-screen size to set the maximum deviation
originalGeometry.CalculateExtents(true); //This calculates the bounds of the geometry
float[] geometryInf = new float[3];
float[] geometrySup = new float[3];
originalGeometry.GetInf(geometryInf);
originalGeometry.GetSup(geometrySup);
float geometryDiagonalLength = (float)Math.Sqrt((double)((geometrySup[0] - geometryInf[0]) * (geometrySup[0] - geometryInf[0]) +
(geometrySup[1] - geometryInf[1]) * (geometrySup[1] - geometryInf[1]) +
(geometrySup[2] - geometryInf[2]) * (geometrySup[2] - geometryInf[2])));
float[] maxDeviationTargets = new float[3]; //To find an approximate MaxDeviation for a pixelsize on screen, we just divide the diagonal by our wanted pixelsize
maxDeviationTargets[0] = geometryDiagonalLength / 500.0f; //Gives a deviation of max 1 pixel at ~500 pixels on-screen
maxDeviationTargets[1] = geometryDiagonalLength / 100.0f; //Gives a deviation of max 1 pixel at ~100 pixels on-screen
maxDeviationTargets[2] = geometryDiagonalLength / 50.0f; //Gives a deviation of max 1 pixel at ~50 pixels on-screen
//Generate the output filenames
string[] outputGeomFilename = new string[3];
outputGeomFilename[0] = writeToLod1 + ".obj";
outputGeomFilename[1] = writeToLod2 + ".obj";
outputGeomFilename[2] = writeToLod3 + ".obj";
// Run the iterative processing, saving the output geometry after every process
for (int reductionIteration = 0; reductionIteration < 3; ++reductionIteration)
{
// The geometry still uses the same pointer, so it does not need to be re-set for the exporter or reducer after each pass.
reductionSettings.SetMaxDeviation(maxDeviationTargets[reductionIteration]); //Stops when an error of the specified size has been reached.
reductionProcessor.RunProcessing();
// Do the exporting
objExporter.SetMaterialFilePath(null); //Reset the material file path so it's set by ExportFilePath
objExporter.SetExportFilePath(outputGeomFilename[reductionIteration]);
if (!objExporter.RunExport())
{
Console.WriteLine("Failed to write target file");
}
}
//Done! 3 cascaded LODs created.
}
static void RunReductionWithTextureCasting(ISimplygonSDK sdk, string readFrom, string writeTo)
{
// Load input geometry from file
spWavefrontImporter objReader = sdk.CreateWavefrontImporter();
objReader.SetExtractGroups(false); //This makes the .obj reader import into a single geometry object instead of multiple
objReader.SetImportFilePath(readFrom);
if (!objReader.RunImport())
{
Console.WriteLine("Failed to read: " + readFrom);
return;
}
// Get geometry and materials from importer
spGeometryData originalGeom = objReader.GetFirstGeometry(); //Only contains a single geom, so "first" is fine
spMaterialTable originalMaterialTable = objReader.GetMaterials();
// Create a copy of the original geometry on which we will run the reduction
spGeometryData lodGeometry = originalGeom.NewCopy(true);
// Create the reduction-processor, and set the geometry to reduce
spReductionProcessor reductionProcessor = sdk.CreateReductionProcessor();
reductionProcessor.SetGeometry(lodGeometry);
///////////////////////////////////////////////////////////////////////////////////////////////
// SETTINGS - Most of these are set to the same value by default, but are set anyway for clarity
// The reduction settings object contains settings pertaining to the actual decimation
spReductionSettings reductionSettings = reductionProcessor.GetReductionSettings();
reductionSettings.SetReductionHeuristics((uint)ReductionHeuristics.SG_REDUCTIONHEURISTICS_FAST); //Choose between "fast" and "consistent" processing.
// The actual reduction triangle target are controlled by these three settings
reductionSettings.SetStopCondition((uint)StopCondition.SG_STOPCONDITION_EITHER_IS_REACHED); //The reduction stops when either of the targets is reached
reductionSettings.SetReductionRatio(0.5f); //Stops at 50% of the original triangle count
reductionSettings.SetMaxDeviation(SimplygonSDK.REAL_MAX); //Stops when an error of the specified size has been reached. As set here it never happens.
// The normal calculation settings deal with the normal-specific reduction settings
spNormalCalculationSettings normalSettings = reductionProcessor.GetNormalCalculationSettings();
normalSettings.SetReplaceNormals(true); //If true, this will turn off normal handling in the reducer and recalculate them all afterwards instead.
normalSettings.SetHardEdgeAngle(70.0f); //If the normals are recalculated, this sets the hard-edge angle.
// The Image Mapping Settings, specifically needed for the texture baking we are doing later
spMappingImageSettings mappingSettings = reductionProcessor.GetMappingImageSettings();
mappingSettings.SetGenerateMappingImage(true); //Without this we cannot fetch data from the original geometry, and thus not generate diffuse and normal-maps later on.
mappingSettings.SetGenerateTexCoords(true); //Set to generate new texture coordinates.
mappingSettings.SetMaxStretch(0.4f); //The higher the number, the fewer texture-borders.
mappingSettings.SetGutterSpace(2); //Buffer space for when texture is mip-mapped, so color values don't blend over. Greatly influences packing efficiency
mappingSettings.SetTexCoordLevel(0); //Sets the output texcoord level. For this asset, this will overwrite the original coords
mappingSettings.SetWidth(1024);
mappingSettings.SetHeight(1024);
mappingSettings.SetMultisamplingLevel(2);
//END SETTINGS
///////////////////////////////////////////////////////////////////////////////////////////////
// Run the actual processing. After this, the set geometry will have been reduced according to the settings
reductionProcessor.RunProcessing();
///////////////////////////////////////////////////////////////////////////////////////////////
// CASTING
// Now, we need to retrieve the generated mapping image and use it to cast the old materials into a new one, for each channel.
spMappingImage mappingImage = reductionProcessor.GetMappingImage();
// Now, for each channel, we want to cast the 9 input materials into a single output material, with one texture per channel.
// First, create a new material table.
spMaterialTable lodMaterialTable = sdk.CreateMaterialTable();
// Create new material for the table.
spMaterial lodMaterial = sdk.CreateMaterial();
lodMaterial.SetName("SimplygonBakedMaterial");
lodMaterialTable.AddMaterial(lodMaterial);
// Cast diffuse and specular texture data with a color caster
{
// Set the material properties
lodMaterial.SetColor(SimplygonSDK.SG_MATERIAL_CHANNEL_AMBIENT, 0, 0, 0, 0);
lodMaterial.SetColor(SimplygonSDK.SG_MATERIAL_CHANNEL_DIFFUSE, 1, 1, 1, 1);
lodMaterial.SetColor(SimplygonSDK.SG_MATERIAL_CHANNEL_SPECULAR, 1, 1, 1, 128);
//Note the 128 on the specular channels alpha. Simplygon bakes shininess
//to the alpha channel of the specular map if the caster is set to 4 channel
//output, and it is scaled between 0 and 1 internally. To get the correct
//scale on the output, it should be multiplied by 128.
// Cast the data using a color caster
spColorCaster colorCaster = sdk.CreateColorCaster();
colorCaster.SetSourceMaterials(originalMaterialTable);
colorCaster.SetDestMaterial(lodMaterial); //This modulates the cast color with the base colors set for the dest material above.
//It means the internal shininess is multiplied by 128 before baking to texture.
colorCaster.SetMappingImage(mappingImage); //The mapping image we got from the reduction process.
colorCaster.SetOutputChannelBitDepth(8); //8 bits per channel. So in this case we will have 24bit colors RGB.
colorCaster.SetDilation(10); //To avoid mip-map artifacts, the empty pixels on the map needs to be filled to a degree as well.
colorCaster.SetColorType(SimplygonSDK.SG_MATERIAL_CHANNEL_DIFFUSE);
colorCaster.SetOutputChannels(3); //RGB, 3 channels! (1 would be for grey scale, and 4 would be for RGBA.)
colorCaster.SetOutputFilePath("combinedDiffuseMap.png"); //Where the texture map will be saved to file.
colorCaster.CastMaterials(); //Do the actual casting and write to texture.
colorCaster.SetColorType(SimplygonSDK.SG_MATERIAL_CHANNEL_SPECULAR);
colorCaster.SetOutputChannels(4); //RGBA, 4 channels! Stores spec power in A
colorCaster.SetOutputFilePath("combinedSpecularMap.png"); //Where the texture map will be saved to file.
colorCaster.CastMaterials(); //Do the actual casting and write to texture.
lodMaterial.SetTexture(SimplygonSDK.SG_MATERIAL_CHANNEL_DIFFUSE, "combinedDiffuseMap.png"); //Set material to point to the texture we cast to above
lodMaterial.SetTexture(SimplygonSDK.SG_MATERIAL_CHANNEL_SPECULAR, "combinedSpecularMap.png"); //Set material to point to the texture we cast to above
}
// Cast normal map texture data with the normal caster. This also compensates for any geometric errors that have appeared in the reduction process.
{
// cast the data using a normal caster
spNormalCaster normalCaster = sdk.CreateNormalCaster();
normalCaster.SetSourceMaterials(originalMaterialTable);
normalCaster.SetMappingImage(mappingImage);
normalCaster.SetOutputChannels(3); // RGB, 3 channels! (But really the x, y and z values for the normal)
normalCaster.SetOutputChannelBitDepth(8);
normalCaster.SetDilation(10);
normalCaster.SetOutputFilePath("combinedNormalMap.png");
normalCaster.SetFlipBackfacingNormals(false);
normalCaster.SetGenerateTangentSpaceNormals(true);
normalCaster.CastMaterials();
// Set normal map of the created material to point to the combined normal map
lodMaterial.SetTexture(SimplygonSDK.SG_MATERIAL_CHANNEL_NORMALS, "combinedNormalMap.png");
}
// END CASTING
///////////////////////////////////////////////////////////////////////////////////////////////
//Create an .obj exporter to save our result
spWavefrontExporter objExporter = sdk.CreateWavefrontExporter();
// Generate the output filenames
// Do the actual exporting
objExporter.SetExportFilePath(writeTo + ".obj");
objExporter.SetSingleGeometry(lodGeometry); //This is the geometry we set as the processing geom of the reducer
objExporter.SetMaterials(lodMaterialTable); //Our new cast material
if (!objExporter.RunExport())
{
Console.WriteLine("Failed to write target file");
}
//Done! LOD and material created.
}
private static void RunHighQualityReduction(ISimplygonSDK SDK, string writeTo)
{
const int vertex_count = 12;
const int triangle_count = 4;
// 4 triangles x 3 indices ( or 3 corners )
int[] corner_ids = { 0, 1, 2,
3, 4, 5,
6, 7, 8,
9, 10, 11 };
// 12 vertices with values for the x, y and z coordinates.
float[] vertex_coordinates = { 0.0f, 0.0f, 0.0f,
1.0f, 0.0f, 0.0f,
1.0f, 1.0f, 0.0f,
1.0f, 1.0f, 0.0f,
0.0f, 1.0f, 0.0f,
0.0f, 0.0f, 0.0f,
1.0f, 0.0f, 0.0f,
2.0f, 0.0f, 0.0f,
2.0f, 1.0f, 0.0f,
2.0f, 1.0f, 0.0f,
1.0f, 1.0f, 0.0f,
1.0f, 0.0f, 0.0f };
spGeometryData g = SDK.CreateGeometryData();
spRealArray coords = g.GetCoords();
spRidArray ids = g.GetVertexIds();
g.SetVertexCount(vertex_count);
g.SetTriangleCount(triangle_count);
for (int i = 0; i < vertex_count; ++i)
{
//coords.SetTuple(i, vertex_coordinates[i * 3]);
//coords[i] = vertex_coordinates[i * 3];
float[] v = { 0.0f, 0.0f, 0.0f };
for (int j = 0; j < 3; ++j)
{
v[j] = vertex_coordinates[i * 3 + j];
}
coords.SetTuple(i, v);
}
for (int i = 0; i < corner_ids.Length; ++i)
{
ids.SetItem(i, corner_ids[i]);
}
// Create the reduction-processor, and set which scene to reduce
using (var reductionProcessor = SDK.CreateReductionProcessor())
{
spScene scene = SDK.CreateScene();
spSceneNode root = scene.GetRootNode();
spSceneMesh meshNode = SDK.CreateSceneMesh();
meshNode.SetGeometry(g);
//auto meshTransform = meshNode->GetRelativeTransform();
//meshTransform->SetToTranslationTransform(100, 0, 0);
root.AddChild(meshNode);
reductionProcessor.SetSceneRoot(root);
///////////////////////////////////////////////////////////////////////////////////////////////
// SETTINGS - Most of these are set to the same value by default, but are set anyway for clarity
// The reduction settings object contains settings pertaining to the actual decimation
var reductionSettings = reductionProcessor.GetReductionSettings();
reductionSettings.SetKeepSymmetry(true); //Try, when possible to reduce symmetrically
reductionSettings.SetUseAutomaticSymmetryDetection(true); //Auto-detect the symmetry plane, if one exists. Can, if required, be set manually instead.
reductionSettings.SetUseHighQualityNormalCalculation(true); //Drastically increases the quality of the LODs normals, at the cost of extra processing time.
reductionSettings.SetReductionHeuristics((uint)ReductionHeuristics.SG_REDUCTIONHEURISTICS_CONSISTENT); //Choose between "fast" and "consistent" processing. Fast will look as good, but may cause inconsistent
//triangle counts when comparing MaxDeviation targets to the corresponding percentage targets.
// The reducer uses importance weights for all features to decide where and how to reduce.
// These are advanced settings and should only be changed if you have some specific reduction requirement
//reductionSettings.SetShadingImportance(2.f); //This would make the shading twice as important to the reducer as the other features./
// The actual reduction triangle target are controlled by these settings
reductionSettings.SetStopCondition((uint)StopCondition.SG_STOPCONDITION_EITHER_IS_REACHED); //The reduction stops when any of the targets below is reached
reductionSettings.SetReductionRatio(0.5f); //Targets at 50% of the original triangle count
reductionSettings.SetMaxDeviation(float.MaxValue); //Targets when an error of the specified size has been reached. As set here it never happens.
// The repair settings object contains settings to fix the geometries
var repairSettings = reductionProcessor.GetRepairSettings();
repairSettings.SetTjuncDist(0.0f); //Removes t-junctions with distance 0.0f
repairSettings.SetWeldDist(0.0f); //Welds overlapping vertices
// The normal calculation settings deal with the normal-specific reduction settings
var normalSettings = reductionProcessor.GetNormalCalculationSettings();
normalSettings.SetReplaceNormals(false); //If true, this will turn off normal handling in the reducer and recalculate them all afterwards instead.
//If false, the reducer will try to preserve the original normals as well as possible
//normalSettings.SetHardEdgeAngle( 60.f ); //If the normals are recalculated, this sets the hard-edge angle./
//END SETTINGS
///////////////////////////////////////////////////////////////////////////////////////////////
// Run the actual processing. After this, the set geometry will have been reduced according to the settings
reductionProcessor.RunProcessing();
// For this reduction, the LOD will use the same material set as the original, and hence no further processing is required
//Create an .obj exporter to save our result
using (var objExporter = SDK.CreateWavefrontExporter())
{
// Generate the output filenames
string outputGeomFilename = writeTo + ".obj";
spSceneMesh topmesh = Utils.SimplygonCast <spSceneMesh>(scene.GetRootNode().GetChild(0), false);
// Do the actual exporting
objExporter.SetExportFilePath(outputGeomFilename);
objExporter.SetSingleGeometry(topmesh.GetGeometry()); //This is the geometry we set as the processing geom of the reducer, retaining the materials in the original scene
objExporter.RunExport();
//Done! LOD created.
}
}
}
static void RunReductionProcessing(ISimplygonSDK sdk, spScene scene, float max_dev, float keep_bone_ratio)
{
// Create the reduction processor. Set the scene that is to be processed
spReductionProcessor red = sdk.CreateReductionProcessor();
red.SetSceneRoot(scene.GetRootNode());
///////////////////////////////////////////////////
// Set the bone settings
spBoneSettings boneSettings = red.GetBoneSettings();
// Reduce bones based on percentage of bones in the scene.
// Bone lod process tells the reduction processor the method
// to use for bone reduction.
boneSettings.SetBoneLodProcess((uint)BoneRemovalProcessing.SG_BONEPROCESSING_RATIO_PROCESSING);
// Set the ratio of bones to keep in the scene
boneSettings.SetBoneLodRatio(keep_bone_ratio);
///////////////////////////////////////////////////
//
// Set the Repair Settings. Current settings will mean that all visual gaps will remain in the geometry and thus
// hinder the reduction on geometries that contains gaps, holes and t-junctions.
spRepairSettings repair_settings = red.GetRepairSettings();
// Only vertices that actually share the same position will be welded together
repair_settings.SetWeldDist(0.0f);
// Only t-junctions with no actual visual distance will be fixed.
repair_settings.SetTjuncDist(0.0f);
///////////////////////////////////////////////////
//
// Set the Reduction Settings.
spReductionSettings reduction_settings = red.GetReductionSettings();
// These flags will make the reduction process respect group and material setups,
// as well as preserve UV coordinates.
FeatureFlags BorderFlagsMask = 0;
BorderFlagsMask |= FeatureFlags.SG_FEATUREFLAGS_GROUP;
BorderFlagsMask |= FeatureFlags.SG_FEATUREFLAGS_MATERIAL;
BorderFlagsMask |= FeatureFlags.SG_FEATUREFLAGS_TEXTURE0;
reduction_settings.SetFeatureFlags((uint)BorderFlagsMask);
// Reduce until we reach max deviation.
reduction_settings.SetMaxDeviation(max_dev);
///////////////////////////////////////////////////
//
// Set the Normal Calculation Settings.
spNormalCalculationSettings normal_settings = red.GetNormalCalculationSettings();
// Will completely recalculate the normals.
normal_settings.SetReplaceNormals(true);
normal_settings.SetHardEdgeAngle(90.0f);
// Run the process
red.RunProcessing();
}
static void bend_geometry(ISimplygonSDK sdk, spScene scene)
{
// The two bones that influence the vertices
//spMatrix4x4 sp_bone1;
spGeometryData geom = Utils.SimplygonCast <spSceneMesh>(scene.GetRootNode().GetChild(0)).GetGeometry();
// get the bone weights field and ids
spRealArray boneWeights = geom.GetBoneWeights();
spRidArray boneIds = geom.GetBoneIds();
// get the Coordinates field
spRealArray Coords = geom.GetCoords();
// now, transform all vertices' coordinates using the bones
for (int v = 0; v < Coords.GetTupleCount(); ++v)
{
Vector3D vtx = new Vector3D(Coords.GetItem(v * 3 + 0), Coords.GetItem(v * 3 + 1), Coords.GetItem(v * 3 + 2));
uint no = boneIds.GetItemCount();
int bone_id_1 = boneIds.GetItem(v * 2 + 0);
int bone_id_2 = boneIds.GetItem(v * 2 + 1);
spSceneBone bone_1;
spSceneBone bone_2;
Matrix4x4 b1gtMat;
Matrix4x4 b2gtMat;
Vector3D vtx1 = new Vector3D(vtx);
Vector3D vtx2 = new Vector3D(vtx);
if (bone_id_1 != -1)
{
bone_1 = scene.GetBoneTable().GetBone(bone_id_1);
//retrieve the global transform of the bone in bind space
spMatrix4x4 rootGlobalTransform = sdk.CreateMatrix4x4();
bone_1.EvaluateDefaultGlobalTransformation(rootGlobalTransform);
//apply transfrom to animate bone
spTransform3 bone1_transform = sdk.CreateTransform3();
bone1_transform.AddTransformation(rootGlobalTransform);
bone1_transform.AddRotation(GetRadFromDegrees(-30), 1, 0, 0);
rootGlobalTransform = bone1_transform.GetMatrix();
//apply transform
b1gtMat = GetMatrix4x4FromIMatrix(rootGlobalTransform);
vtx1 = b1gtMat.MultiplyPointVector(vtx);
}
if (bone_id_2 != -1)
{
bone_2 = scene.GetBoneTable().GetBone(bone_id_2);
spMatrix4x4 boneGlobalTransform = sdk.CreateMatrix4x4();
bone_2.EvaluateDefaultGlobalTransformation(boneGlobalTransform);
spTransform3 bone2_transform = sdk.CreateTransform3();
//transform into bone2's local space and apply transform
bone2_transform.PreMultiply();
boneGlobalTransform.Invert();
bone2_transform.AddTransformation(boneGlobalTransform);
bone2_transform.AddRotation(GetRadFromDegrees(-30), 1, 0, 0);
bone2_transform.AddTranslation(0.0f, 17.5f, 0.0f);
//apply transform of the first bone
bone2_transform.AddRotation(GetRadFromDegrees(-30), 1, 0, 0);
//get the global transform matrix for the animation pose
boneGlobalTransform = bone2_transform.GetMatrix();
b2gtMat = GetMatrix4x4FromIMatrix(boneGlobalTransform);
//apply transform to the vertex
vtx2 = b2gtMat.MultiplyPointVector(vtx);
}
//get the bone weights from the geometry data
float blend1 = boneWeights.GetItem(v * 2 + 0);
float blend2 = boneWeights.GetItem(v * 2 + 1);
// normalize the blend
float blend_scale = 1.0f / (blend1 + blend2);
blend1 *= blend_scale;
blend2 *= blend_scale;
// do a linear blend
vtx = vtx1 * blend1 + vtx2 * blend2;
// store in coordinates
Coords.SetItem(v * 3 + 0, vtx.x);
Coords.SetItem(v * 3 + 1, vtx.y);
Coords.SetItem(v * 3 + 2, vtx.z);
}
}
//this function generates a fixed tube
static spScene generate_simple_tube(ISimplygonSDK sdk)
{
const int vertex_count = 16;
const int triangle_count = 24;
const int corner_count = triangle_count * 3;
//create a scene object
spScene scene = sdk.CreateScene();
// triangles x 3 indices ( or 3 corners )
int[] corner_ids = { 0, 1, 4,
4, 1, 5,
5, 1, 6,
1, 2, 6,
6, 2, 3,
6, 3, 7,
7, 3, 0,
7, 0, 4,
4, 5, 8,
8, 5, 9,
9, 5, 10,
5, 6, 10,
10, 6, 7,
10, 7, 11,
11, 7, 4,
11, 4, 8,
8, 9, 12,
12, 9, 13,
13, 9, 14,
9, 10, 14,
14, 10, 11,
14, 11, 15,
15, 11, 8,
15, 8, 12 };
// vertices with values for the x, y and z coordinates.
float[] vertex_coordinates = { 1.0f, 0.0f, 1.0f,
1.0f, 0.0f, -1.0f,
-1.0f, 0.0f, -1.0f,
-1.0f, 0.0f, 1.0f,
1.0f, 15.0f, 1.0f,
1.0f, 15.0f, -1.0f,
-1.0f, 15.0f, -1.0f,
-1.0f, 15.0f, 1.0f,
1.0f, 20.0f, 1.0f,
1.0f, 20.0f, -1.0f,
-1.0f, 20.0f, -1.0f,
-1.0f, 20.0f, 1.0f,
1.0f, 35.0f, 1.0f,
1.0f, 35.0f, -1.0f,
-1.0f, 35.0f, -1.0f,
-1.0f, 35.0f, 1.0f };
spGeometryData geom = sdk.CreateGeometryData();
//add bone weights and ids to geometry data (per vertex)
geom.AddBoneWeights(2);
spRealArray coords = geom.GetCoords();
spRidArray vertex_ids = geom.GetVertexIds();
spRealArray BoneWeights = geom.GetBoneWeights();
spRidArray BoneIds = geom.GetBoneIds();
geom.SetVertexCount(vertex_count);
geom.SetTriangleCount(triangle_count);
//create the bone table
spSceneBoneTable scn_bone_table = scene.GetBoneTable();
//create an array to store bone ids
spRidArray bone_ids = sdk.CreateRidArray();
//create root bone for the scene
spSceneBone root_bone = sdk.CreateSceneBone();
root_bone.SetName("root_bone");
//add the bone to the scene bone table and get a bone id
int root_bone_id = scn_bone_table.AddBone(root_bone);
//a
bone_ids.AddItem(root_bone_id);
spSceneBone parent_bone = root_bone;
//create bones and populate the scene bone table
for (uint bone_index = 1; bone_index < total_bone; bone_index++)
{
spSceneBone bone = sdk.CreateSceneBone();
bone.SetName("ChildBone");
spTransform3 boneTransform = sdk.CreateTransform3();
//SET UP BONE IN BIND POSE
//translate the child bone to its corrent position relative to the parent bone
boneTransform.AddTransformation(bone.GetRelativeTransform());
boneTransform.PreMultiply();
boneTransform.AddTranslation(0.0f, 17.5f, 0.0f);
//store the relatvice transform
bone.GetRelativeTransform().DeepCopy(boneTransform.GetMatrix());
//add bone to the scene bone table
int bone_id = scn_bone_table.AddBone(bone);
//link bone to parent bone
parent_bone.AddChild(bone);
bone_ids.AddItem(bone_id);
parent_bone = bone;
}
float[] v = new float[3];
for (int i = 0; i < vertex_count; ++i)
{
v[0] = vertex_coordinates[i * 3];
v[1] = vertex_coordinates[i * 3 + 1];
v[2] = vertex_coordinates[i * 3 + 2];
coords.SetTuple(i, v);
//real blend_val = real((rid(i)/rid(4)))/real(3);
float blend_val = 0.5f;
float blend1 = 1.0f - blend_val;
float blend2 = blend_val;
int bone_id_1 = 0;
int bone_id_2 = 1;
if (i < 4)
{
bone_id_2 = -1;
blend2 = 0;
blend1 = 1;
}
else if (i > 11)
{
bone_id_1 = -1;
blend2 = 1;
blend1 = 0;
}
blend1 *= blend1;
blend2 *= blend2;
//set the bone weights to perform skining
BoneWeights.SetItem((i * 2) + 0, blend1);
BoneWeights.SetItem((i * 2) + 1, blend2);
//set the bone ids influencing the vertex.
BoneIds.SetItem((i * 2) + 0, bone_id_1);
BoneIds.SetItem((i * 2) + 1, bone_id_2);
}
for (int i = 0; i < corner_count; ++i)
{
vertex_ids.SetItem(i, corner_ids[i]);
}
//create a scene mesh
spSceneMesh mesh = sdk.CreateSceneMesh();
mesh.SetGeometry(geom);
mesh.SetName("mesh");
//get the root node of the scene and add the root_bone and mesh to the scene
scene.GetRootNode().AddChild(mesh);
scene.GetRootNode().AddChild(root_bone);
return(scene);
}
static bool run_remeshing_for_lod(ISimplygonSDK sdk, int lod_index, uint merge_distance)
{
string userProfileDirectory = System.Environment.GetEnvironmentVariable("USERPROFILE");
string assetRoot = userProfileDirectory + @"/Documents/SimplygonSDK/SourceCode/Assets/";
string tempRoot = @"../../../../../temp/";
string output_filename = string.Format(tempRoot + "wall_lod{0}_merge{1}.obj", lod_index + 1, merge_distance);
string output_material_filename = string.Format(tempRoot + "wall_lod{0}_merge{1}.mtl", lod_index + 1, merge_distance);
string output_diffuse_filename = string.Format(tempRoot + "wall_lod{0}_merge{1}_diffuse.png", lod_index + 1, merge_distance);
string output_normals_filename = string.Format(tempRoot + "wall_lod{0}_merge{1}_normals.png", lod_index + 1, merge_distance);
// Import source geometry
spGeometryData geom;
spMaterialTable materials;
Console.WriteLine("Importing wavefront .obj file...\n");
{
// Run import
spWavefrontImporter importer = sdk.CreateWavefrontImporter();
importer.SetExtractGroups(false); // We only want one large geometry, no need to extract groups
importer.SetImportFilePath(assetRoot + "wall.obj");
if (!importer.RunImport())
{
Console.WriteLine("Could not open input test file");
return(false);
}
// Get the only geometry and the materials
geom = importer.GetFirstGeometry();
materials = importer.GetMaterials();
}
// Make a copy of the geometry, we need the original for texture casting later.
// The remesher will replace the data of the geometry after it has processed it.
spGeometryData red_geom = geom.NewCopy(true);
// Create a Scene-object and a SceneMesh-object.
// Place the red_geom into the SceneMesh, and then the SceneMesh as a child to the RootNode.
spScene scene = sdk.CreateScene();
spSceneMesh mesh = sdk.CreateSceneMesh();
mesh.SetGeometry(red_geom);
mesh.SetName(red_geom.GetName().GetText());
scene.GetRootNode().AddChild(mesh);
spMappingImage mapping_image;
// Remesh it
Console.WriteLine("Running remesher...\n");
{
spRemeshingProcessor remesher = sdk.CreateRemeshingProcessor();
// Set target on-screen size in pixels
remesher.GetRemeshingSettings().SetOnScreenSize(lod_sizes[lod_index]);
// Set the on-screen merge distance in pixels. Holes smaller than this will be sealed
// and geometries closer to each other than this will be merged.
remesher.GetRemeshingSettings().SetMergeDistance(merge_distance);
// Disable the cutting plane
remesher.GetRemeshingSettings().SetUseGroundPlane(false);
// Set to generate mapping image for texture casting.
remesher.GetMappingImageSettings().SetGenerateMappingImage(true);
remesher.SetSceneRoot(scene.GetRootNode());
remesher.RemeshGeometry();
// Mapping image is needed later on for texture casting.
mapping_image = remesher.GetMappingImage();
}
spSceneMesh topmesh = Utils.SimplygonCast <spSceneMesh>(scene.GetRootNode().GetChild(0), false);
// Cast diffuse texture and normal map data into a new material
// Create new material table.
spMaterialTable output_materials = sdk.CreateMaterialTable();
// Create new material for the table.
spMaterial output_material = sdk.CreateMaterial();
output_materials.AddMaterial(output_material);
// Cast diffuse texture data
{
// Cast the data using a color caster
spColorCaster cast = sdk.CreateColorCaster();
cast.SetColorType(SimplygonSDK.SG_MATERIAL_CHANNEL_DIFFUSE);
cast.SetSourceMaterials(materials);
cast.SetMappingImage(mapping_image); // The mapping image we got from the remeshing process.
cast.SetOutputChannels(3); // RGB, 3 channels! (1 would be for grey scale, and 4 would be for RGBA.)
cast.SetOutputChannelBitDepth(8); // 8 bits per channel. So in this case we will have 24bit colors RGB.
cast.SetDilation(10); // To avoid mip-map artifacts, the empty pixels on the map needs to be filled to a degree aswell.
cast.SetOutputFilePath(output_diffuse_filename); // Where the texture map will be saved to file.
cast.CastMaterials(); // Fetch!
// set the material properties
// Set the diffuse multiplier for the texture. 1 means it will not differ from original texture,
// For example: 0 would ignore a specified color and 2 would make a color twice as pronounced as the others.
output_material.SetDiffuseRed(1);
output_material.SetDiffuseGreen(1);
output_material.SetDiffuseBlue(1);
// Set material to point to created texture filename.
output_material.SetTexture(SimplygonSDK.SG_MATERIAL_CHANNEL_DIFFUSE, output_diffuse_filename);
}
// cast normal map texture data
{
// cast the data using a color caster
spNormalCaster cast = sdk.CreateNormalCaster();
cast.SetSourceMaterials(materials);
cast.SetMappingImage(mapping_image);
cast.SetOutputChannels(3); // RGB, 3 channels! (But really the x, y and z values for the normal)
cast.SetOutputChannelBitDepth(8);
cast.SetDilation(10);
cast.SetOutputFilePath(output_normals_filename);
cast.CastMaterials();
// Set material to point to created texture filename.
output_material.SetTexture(SimplygonSDK.SG_MATERIAL_CHANNEL_NORMALS, output_normals_filename);
}
// export the remeshed geometry to an OBJ file
Console.WriteLine("Exporting wavefront .obj file...\n");
{
spWavefrontExporter exporter = sdk.CreateWavefrontExporter();
exporter.SetExportFilePath(output_filename);
exporter.SetSingleGeometry(topmesh.GetGeometry());
exporter.SetMaterials(output_materials);
if (!exporter.RunExport())
{
Console.WriteLine("Failed to write result");
return(false);
}
}
return(true);
}
