// 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 new static FbxFileTexture Create(FbxObject pContainer, string pName)
{
global::System.IntPtr cPtr = FbxWrapperNativePINVOKE.FbxFileTexture_Create__SWIG_1(FbxObject.getCPtr(pContainer), pName);
FbxFileTexture ret = (cPtr == global::System.IntPtr.Zero) ? null : new FbxFileTexture(cPtr, false);
return(ret);
}
public new static FbxFileTexture Create(FbxManager pManager, string pName)
{
global::System.IntPtr cPtr = fbx_wrapperPINVOKE.FbxFileTexture_Create__SWIG_0(FbxManager.getCPtr(pManager), pName);
FbxFileTexture ret = (cPtr == global::System.IntPtr.Zero) ? null : new FbxFileTexture(cPtr, false);
return(ret);
}
public bool Equals(FbxFileTexture other)
{
if (object.ReferenceEquals(other, null))
{
return(false);
}
return(this.swigCPtr.Handle.Equals(other.swigCPtr.Handle));
}
public bool eq(FbxFileTexture pTexture)
{
bool ret = FbxWrapperNativePINVOKE.FbxFileTexture_eq(swigCPtr, FbxFileTexture.getCPtr(pTexture));
if (FbxWrapperNativePINVOKE.SWIGPendingException.Pending)
{
throw FbxWrapperNativePINVOKE.SWIGPendingException.Retrieve();
}
return(ret);
}
/// <summary>
/// Export an Unity Texture
/// </summary>
public void ExportTexture(Material unityMaterial, string unityPropName,
FbxSurfaceMaterial fbxMaterial, string fbxPropName)
{
if (!unityMaterial)
{
return;
}
// Get the texture on this property, if any.
if (!unityMaterial.HasProperty(unityPropName))
{
return;
}
var unityTexture = unityMaterial.GetTexture(unityPropName);
if (!unityTexture)
{
return;
}
// Find its filename
var textureSourceFullPath = AssetDatabase.GetAssetPath(unityTexture);
if (textureSourceFullPath == "")
{
return;
}
// get absolute filepath to texture
textureSourceFullPath = Path.GetFullPath(textureSourceFullPath);
if (Verbose)
{
Debug.Log(string.Format("{2}.{1} setting texture path {0}", textureSourceFullPath, fbxPropName, fbxMaterial.GetName()));
}
// Find the corresponding property on the fbx material.
var fbxMaterialProperty = fbxMaterial.FindProperty(fbxPropName);
if (fbxMaterialProperty == null || !fbxMaterialProperty.IsValid())
{
Debug.Log("property not found"); return;
}
// Find or create an fbx texture and link it up to the fbx material.
if (!TextureMap.ContainsKey(textureSourceFullPath))
{
var fbxTexture = FbxFileTexture.Create(fbxMaterial, fbxPropName + "_Texture");
fbxTexture.SetFileName(textureSourceFullPath);
fbxTexture.SetTextureUse(FbxTexture.ETextureUse.eStandard);
fbxTexture.SetMappingType(FbxTexture.EMappingType.eUV);
TextureMap.Add(textureSourceFullPath, fbxTexture);
}
TextureMap[textureSourceFullPath].ConnectDstProperty(fbxMaterialProperty);
}
public new static FbxFileTexture Create(FbxObject pContainer, string pName)
{
global::System.IntPtr cPtr = NativeMethods.FbxFileTexture_Create__SWIG_1(FbxObject.getCPtr(pContainer), pName);
FbxFileTexture ret = (cPtr == global::System.IntPtr.Zero) ? null : new FbxFileTexture(cPtr, false);
if (NativeMethods.SWIGPendingException.Pending)
{
throw NativeMethods.SWIGPendingException.Retrieve();
}
return(ret);
}
public new FbxFileTexture GetSrcObject_FileTexture()
{
global::System.IntPtr cPtr = NativeMethods.FbxPropertyDouble3_GetSrcObject_FileTexture(swigCPtr);
FbxFileTexture ret = (cPtr == global::System.IntPtr.Zero) ? null : new FbxFileTexture(cPtr, false);
if (NativeMethods.SWIGPendingException.Pending)
{
throw NativeMethods.SWIGPendingException.Retrieve();
}
return(ret);
}
protected override FbxScene CreateScene(FbxManager manager)
{
FbxScene scene = base.CreateScene(manager);
// Set the UVs
FbxMesh cubeMesh = scene.GetRootNode().GetChild(0).GetMesh();
FbxLayer fbxLayer = cubeMesh.GetLayer(0 /* default layer */);
if (fbxLayer == null)
{
cubeMesh.CreateLayer();
fbxLayer = cubeMesh.GetLayer(0 /* default layer */);
}
using (var fbxLayerElement = FbxLayerElementUV.Create(cubeMesh, "UVSet"))
{
fbxLayerElement.SetMappingMode(FbxLayerElement.EMappingMode.eByPolygonVertex);
fbxLayerElement.SetReferenceMode(FbxLayerElement.EReferenceMode.eIndexToDirect);
// set texture coordinates per vertex
FbxLayerElementArray fbxElementArray = fbxLayerElement.GetDirectArray();
for (int n = 0; n < 8; n++)
{
fbxElementArray.Add(new FbxVector2(n % 2, 1)); // TODO: switch to correct values
}
// For each face index, point to a texture uv
FbxLayerElementArray fbxIndexArray = fbxLayerElement.GetIndexArray();
fbxIndexArray.SetCount(24);
for (int vertIndex = 0; vertIndex < 24; vertIndex++)
{
fbxIndexArray.SetAt(vertIndex, vertIndex % 8); // TODO: switch to correct values
}
fbxLayer.SetUVs(fbxLayerElement, FbxLayerElement.EType.eTextureDiffuse);
}
// Create the material
var fbxMaterial = FbxSurfacePhong.Create(scene, m_materialName);
fbxMaterial.Diffuse.Set(new FbxColor(1, 1, 1));
fbxMaterial.Emissive.Set(new FbxColor(0.5, 0.1, 0.2));
fbxMaterial.Ambient.Set(new FbxDouble3(0.3, 0.4, 0));
fbxMaterial.BumpFactor.Set(0.6);
fbxMaterial.Specular.Set(new FbxDouble3(0.8, 0.7, 0.9));
// Create and add the texture
var fbxMaterialProperty = fbxMaterial.FindProperty(FbxSurfaceMaterial.sDiffuse);
Assert.IsNotNull(fbxMaterialProperty);
Assert.IsTrue(fbxMaterialProperty.IsValid());
var fbxTexture = FbxFileTexture.Create(fbxMaterial, FbxSurfaceMaterial.sDiffuse + "_Texture");
fbxTexture.SetFileName("/path/to/some/texture.jpg");
fbxTexture.SetTextureUse(FbxTexture.ETextureUse.eStandard);
fbxTexture.SetMappingType(FbxTexture.EMappingType.eUV);
fbxTexture.ConnectDstProperty(fbxMaterialProperty);
scene.GetRootNode().GetChild(0).AddMaterial(fbxMaterial);
return(scene);
}
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);
}
internal static global::System.Runtime.InteropServices.HandleRef getCPtr(FbxFileTexture obj)
{
return((obj == null) ? new global::System.Runtime.InteropServices.HandleRef(null, global::System.IntPtr.Zero) : obj.swigCPtr);
}
