// Pass:
// parameterName -
// used for the FbxTexture name. Can be something arbitrary since as far as I know,
// the texture node's name is unused by importers.
private static void AddTextureToMaterial(
FbxExportGlobals G,
ExportFileReference fileRef,
FbxSurfaceLambert fbxMaterial,
string parameterName)
{
Debug.Assert(File.Exists(fileRef.m_originalLocation));
var destPath = Path.Combine(G.m_outputDir, fileRef.m_uri);
if (!File.Exists(destPath))
{
if (!FileUtils.InitializeDirectoryWithUserError(Path.GetDirectoryName(destPath)))
{
return;
}
File.Copy(fileRef.m_originalLocation, destPath);
}
// It's kind of weird that the parameter name is used for the texture node's name,
// but as far as I can tell nobody cares about that name, so whatever.
FbxFileTexture fbxTexture = FbxFileTexture.Create(G.m_scene, parameterName);
fbxTexture.SetFileName(destPath);
fbxTexture.SetTextureUse(FbxTexture.ETextureUse.eStandard);
fbxTexture.SetMappingType(FbxTexture.EMappingType.eUV);
fbxTexture.SetMaterialUse(FbxFileTexture.EMaterialUse.eModelMaterial);
fbxTexture.UVSet.Set(new FbxString("uv0"));
// It's also weird that we only ever assign to the Diffuse slot.
// Shouldn't we be looking at the parameter name and assigning to Diffuse, Normal, etc
// based on what we see?
// TODO: check
fbxMaterial.Diffuse.ConnectSrcObject(fbxTexture);
fbxMaterial.TransparentColor.ConnectSrcObject(fbxTexture);
}
public void TestGetOrCreateSafeLocal()
{
var dp = Application.dataPath;
var ctx = new ExportFileReference.DisambiguationContext();
var paper = ExportFileReference.GetOrCreateSafeLocal(
ctx, "main.png", dp + @"\Resources\Brushes\Basic\Paper");
var paper2 = ExportFileReference.GetOrCreateSafeLocal(
ctx, "main.png", dp + @"\Resources\Brushes\Basic\Paper");
Assert.AreEqual(paper, paper2); // reference equality
Assert.AreEqual("main.png", paper.m_uri);
Assert.AreEqual("main.png", paper2.m_uri);
var ductTape = ExportFileReference.GetOrCreateSafeLocal(
ctx, "main.png", dp + @"\Resources\Brushes\Basic\DuctTape");
Assert.AreNotEqual(paper, ductTape);
Assert.AreEqual("main_1.png", ductTape.m_uri);
var peverse = ExportFileReference.GetOrCreateSafeLocal(
ctx, "main_1.png", dp + @"\Editor\Tests\TestData");
Assert.AreEqual("main_1_1.png", peverse.m_uri);
var withNamespace = ExportFileReference.GetOrCreateSafeLocal(
ctx, "main.png", dp + @"\Resources\Brushes\Basic\Hypercolor",
@"subdirectory\brush_main.png");
Assert.AreEqual("brush_main.png", withNamespace.m_uri);
}
public static GlTF_Image LookupOrCreate(GlTF_Globals G, GlTF_FileReference fileRef,
string proposedName = null)
{
if (!G.imagesByFileRefUri.ContainsKey(fileRef.m_uri))
{
string name = "image_" + (proposedName ?? $"{G.imagesByFileRefUri.Count}");
G.imagesByFileRefUri.Add(fileRef.m_uri, new GlTF_Image(G, name, fileRef));
}
return(G.imagesByFileRefUri[fileRef.m_uri]);
}
private ExportResults ExportHelper(
SceneStatePayload payload,
string outputFile,
bool binary,
bool doExtras,
int gltfVersion,
bool allowHttpUri)
{
// TODO: Ownership of this temp directory is sloppy.
// Payload and export share the same dir and we assume that the exporter:
// 1. will not write files whose names conflict with payload's
// 2. will clean up the entire directory when done
// This works, as long as the payload isn't used for more than one export (it currently isn't)
using (var exporter = new GlTF_ScriptableExporter(payload.temporaryDirectory, gltfVersion))
{
exporter.AllowHttpUri = allowHttpUri;
try
{
m_exporter = exporter;
exporter.G.binary = binary;
exporter.BeginExport(outputFile);
exporter.SetMetadata(payload.generator, copyright: null);
if (doExtras)
{
SetExtras(exporter, payload);
}
if (payload.env.skyCubemap != null)
{
// Add the skybox texture to the export.
string texturePath = ExportUtils.GetTexturePath(payload.env.skyCubemap);
string textureFilename = Path.GetFileName(texturePath);
exporter.G.extras["TB_EnvironmentSkybox"] =
ExportFileReference.CreateLocal(texturePath, textureFilename);
}
WriteObjectsAndConnections(exporter, payload);
string[] exportedFiles = exporter.EndExport();
return(new ExportResults
{
success = true,
exportedFiles = exportedFiles,
numTris = exporter.NumTris
});
}
catch (InvalidOperationException e)
{
OutputWindowScript.Error("glTF export failed", e.Message);
// TODO: anti-pattern. Let the exception bubble up so caller can log it properly
// Actually, InvalidOperationException is now somewhat expected in experimental, since
// the gltf exporter does not check IExportableMaterial.SupportsDetailedMaterialInfo.
// But we still want the logging for standalone builds.
Debug.LogException(e);
return(new ExportResults {
success = false
});
}
catch (IOException e)
{
OutputWindowScript.Error("glTF export failed", e.Message);
return(new ExportResults {
success = false
});
}
finally
{
payload.Destroy();
// The lifetime of ExportGlTF, GlTF_ScriptableExporter, and GlTF_Globals instances
// is identical. This is solely to be pedantic.
m_exporter = null;
}
}
}
public bool IsHttp()
{
return(ExportFileReference.IsHttp(m_uri));
}
internal static FbxSurfaceMaterial CreateFbxMaterial(
FbxExportGlobals G, string meshNamespace, IExportableMaterial exportableMaterial,
HashSet <string> createdMaterialNames)
{
string materialName;
if (exportableMaterial is BrushDescriptor)
{
// Toolkit uses this guid (in "N" format) to look up a BrushDescriptor.
// See Toolkit's ModelImportSettings.GetDescriptorForStroke
materialName = $"{exportableMaterial.UniqueName:N}_{meshNamespace}_{exportableMaterial.DurableName}";
}
else if (exportableMaterial is DynamicExportableMaterial dem)
{
// Comes from {fbx,obj,gltf,...} import from {Poly, Media Library}
// This is a customized version of a BrushDescriptor -- almost certainly
// Pbr{Blend,Opaque}{Double,Single}Sided with maybe an added texture and
// some of its params customized.
// TBT will merge the material created by Unity for this FbxMaterial with
// the premade material it has for the parent guid.
materialName = $"{dem.Parent.m_Guid:N}_{meshNamespace}_{dem.DurableName}";
}
else
{
Debug.LogWarning($"Unknown class {exportableMaterial.GetType().Name}");
materialName = $"{meshNamespace}_{exportableMaterial.DurableName}";
}
// If only ExportFbx were a non-static class we could merge it with FbxExportGlobals
materialName = ExportUtils.CreateUniqueName(materialName, createdMaterialNames);
FbxSurfaceLambert material = FbxSurfaceLambert.Create(G.m_scene, materialName);
material.Ambient.Set(new FbxDouble3(0, 0, 0));
material.Diffuse.Set(new FbxDouble3(1.0, 1.0, 1.0));
if (exportableMaterial.EmissiveFactor > 0)
{
material.EmissiveFactor.Set(exportableMaterial.EmissiveFactor);
material.Emissive.Set(new FbxDouble3(1.0, 1.0, 1.0));
}
if (exportableMaterial.BlendMode != ExportableMaterialBlendMode.None)
{
var blendMode = FbxProperty.Create(material, Globals.FbxStringDT, "BlendMode");
switch (exportableMaterial.BlendMode)
{
case ExportableMaterialBlendMode.AlphaMask:
blendMode.SetString(new FbxString("AlphaMask"));
material.TransparencyFactor.Set(0.2);
break;
case ExportableMaterialBlendMode.AdditiveBlend:
blendMode.SetString(new FbxString("AdditiveBlend"));
break;
}
}
// Export the texture
if (exportableMaterial.HasExportTexture())
{
// This is not perfectly unique, but it is good enough for fbx export
// better would be to use <durable>_<guid> but that's ugly, and nobody uses
// the textures anyway, so... let's leave well enough alone for now.
string albedoTextureName = exportableMaterial.DurableName;
var fullTextureDir = Path.Combine(G.m_outputDir, kRelativeTextureDir);
if (!Directory.Exists(fullTextureDir))
{
if (!FileUtils.InitializeDirectoryWithUserError(fullTextureDir))
{
throw new IOException("Cannot write textures");
}
}
string src = exportableMaterial.GetExportTextureFilename();
var textureFileName = albedoTextureName + ".png";
var textureFilePath = Path.Combine(fullTextureDir, textureFileName);
FileInfo srcInfo = new FileInfo(src);
if (srcInfo.Exists && !new FileInfo(textureFilePath).Exists)
{
srcInfo.CopyTo(textureFilePath);
}
FbxFileTexture texture = FbxFileTexture.Create(G.m_scene, albedoTextureName + "_texture");
texture.SetFileName(textureFilePath);
texture.SetTextureUse(FbxTexture.ETextureUse.eStandard);
texture.SetMappingType(FbxTexture.EMappingType.eUV);
texture.SetMaterialUse(FbxFileTexture.EMaterialUse.eModelMaterial);
texture.UVSet.Set(new FbxString("uv0"));
material.Diffuse.ConnectSrcObject(texture);
material.TransparentColor.ConnectSrcObject(texture);
}
else
{
foreach (var kvp in exportableMaterial.TextureUris)
{
string parameterName = kvp.Key;
string textureUri = kvp.Value;
if (ExportFileReference.IsHttp(textureUri))
{
// fbx can't deal with http references to textures
continue;
}
ExportFileReference fileRef = ExportFileReference.GetOrCreateSafeLocal(
G.m_disambiguationContext, textureUri, exportableMaterial.UriBase,
$"{meshNamespace}_{Path.GetFileName(textureUri)}");
AddTextureToMaterial(G, fileRef, material, parameterName);
}
}
return(material);
}
private GlTF_Image(GlTF_Globals globals, string name, GlTF_FileReference fileRef)
: base(globals)
{
this.name = name;
this.uri = fileRef;
}