Exemple #1
0
        // 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);
        }
Exemple #2
0
        /// Main entry point
        public static bool Export(string outputFile, string format, string fbxVersion = null)
        {
            using (var G = new FbxExportGlobals(outputFile)) {
                int fmt = G.m_manager.GetIOPluginRegistry().FindWriterIDByDescription(format);
                if (!G.m_exporter.Initialize(outputFile, fmt, G.m_ioSettings))
                {
                    OutputWindowScript.Error("FBX export failed", "Could not initialize exporter");
                    return(false);
                }
                if (!String.IsNullOrEmpty(fbxVersion))
                {
                    G.m_exporter.SetFileExportVersion(new FbxString(fbxVersion));
                }

                G.m_scene = FbxScene.Create(G.m_manager, "scene");
                if (G.m_scene == null)
                {
                    OutputWindowScript.Error("FBX export failed", "Could not initialize scene");
                    return(false);
                }

                String version = string.Format("{0}.{1}", App.Config.m_VersionNumber,
                                               App.Config.m_BuildStamp);
                FbxDocumentInfo info = FbxDocumentInfo.Create(G.m_manager, "DocInfo");
                info.Original_ApplicationVendor.Set(new FbxString(App.kDisplayVendorName));
                info.Original_ApplicationName.Set(new FbxString(App.kAppDisplayName));
                info.Original_ApplicationVersion.Set(new FbxString(version));
                info.LastSaved_ApplicationVendor.Set(new FbxString(App.kDisplayVendorName));
                info.LastSaved_ApplicationName.Set(new FbxString(App.kAppDisplayName));
                info.LastSaved_ApplicationVersion.Set(new FbxString(version));
                // The toolkit's FBX parser is too simple to be able to read anything but
                // the UserData/Properties70 node, so add the extra info as a custom property
                var stringType = info.Original_ApplicationVersion.GetPropertyDataType();
                var prop       = FbxProperty.Create(info.Original, stringType, "RequiredToolkitVersion");
                prop.SetString(FbxUtils.kRequiredToolkitVersion);

                G.m_scene.SetDocumentInfo(info);
                G.m_scene.GetGlobalSettings().SetSystemUnit(FbxSystemUnit.m);

                try {
                    WriteObjectsAndConnections2(G);
                    G.m_exporter.Export(G.m_scene);
                } catch (InvalidOperationException e) {
                    OutputWindowScript.Error("FBX export failed", e.Message);
                    return(false);
                } catch (IOException e) {
                    OutputWindowScript.Error("FBX export failed", e.Message);
                    return(false);
                }
                return(true);
            }
        }
Exemple #3
0
        // This writes out the local xform, and requires that parentNode use payload.instanceXform
        static void ExportMeshPayload_Local(
            FbxExportGlobals G, ModelMeshPayload payload, FbxNode parentNode)
        {
            // If these aren't unique, either FBX or Unity will uniquify them for us -- not sure which.
            // So roll payload.id into the name.
            FbxNode fbxNode = FbxNode.Create(G.m_manager, payload.nodeName);

            fbxNode.SetLocalTransform(payload.localXform);
            fbxNode.SetNodeAttribute(G.GetOrCreateFbxMesh(payload));
            fbxNode.AddMaterial(G.GetOrCreateFbxMaterial(
                                    payload.MeshNamespace, payload.exportableMaterial));

            parentNode.AddChild(fbxNode);
        }
Exemple #4
0
        // For use only by FbxExportGlobals.
        internal static FbxMesh CreateFbxMesh(FbxExportGlobals G, GeometryPool pool, string poolName)
        {
            FbxMesh fbxMesh = FbxMesh.Create(G.m_manager, poolName);

            ExportMesh mesh   = new ExportMesh(pool);
            int        nVerts = mesh.m_pool.m_Vertices.Count;

            fbxMesh.InitControlPoints(nVerts);

            unsafe
            {
                fixed(Vector3 *f = mesh.m_pool.m_Vertices.GetBackingArray())
                {
                    Globals.SetControlPoints(fbxMesh, (IntPtr)f);
                }
            }

            List <int> triangles = mesh.m_pool.m_Tris;

            // Not available in Unity's wrappers
            // fbxMesh.ReservePolygonCount(triangles.Count / 3);
            // fbxMesh.ReservePolygonVertexCount(triangles.Count);
            for (int i = 0; i < triangles.Count; i += 3)
            {
                fbxMesh.BeginPolygon(-1 /* Material */, -1 /* Texture */, -1 /* Group */, false /* Legacy */);
                fbxMesh.AddPolygon(triangles[i]);
                fbxMesh.AddPolygon(triangles[i + 1]);
                fbxMesh.AddPolygon(triangles[i + 2]);
                fbxMesh.EndPolygon();
            }

            FbxLayer layer0 = fbxMesh.GetLayer(0);

            if (layer0 == null)
            {
                fbxMesh.CreateLayer();
                layer0 = fbxMesh.GetLayer(0);
            }

            var layerElementNormal = FbxLayerElementNormal.Create(fbxMesh, "normals");

            layerElementNormal.SetMappingMode(FbxLayerElement.EMappingMode.eByControlPoint);
            layerElementNormal.SetReferenceMode(FbxLayerElement.EReferenceMode.eDirect);
            CopyToFbx(layerElementNormal.GetDirectArray(), mesh.m_pool.m_Normals);
            layer0.SetNormals(layerElementNormal);

            var layerElementColor = FbxLayerElementVertexColor.Create(fbxMesh, "color");

            layerElementColor.SetMappingMode(FbxLayerElement.EMappingMode.eByControlPoint);
            layerElementColor.SetReferenceMode(FbxLayerElement.EReferenceMode.eDirect);
            CopyToFbx(layerElementColor.GetDirectArray(), mesh.m_linearColor);
            layer0.SetVertexColors(layerElementColor);

            var layerElementTangent = FbxLayerElementTangent.Create(fbxMesh, "tangents");

            layerElementTangent.SetMappingMode(FbxLayerElement.EMappingMode.eByControlPoint);
            layerElementTangent.SetReferenceMode(FbxLayerElement.EReferenceMode.eDirect);
            CopyToFbx(layerElementTangent.GetDirectArray(), mesh.m_pool.m_Tangents);
            layer0.SetTangents(layerElementTangent);

            // Compute and export binormals since Unity's FBX importer won't import the tangents without
            // them, even though they're not used.
            var layerElementBinormal = FbxLayerElementBinormal.Create(fbxMesh, "binormals");

            layerElementBinormal.SetMappingMode(FbxLayerElement.EMappingMode.eByControlPoint);
            layerElementBinormal.SetReferenceMode(FbxLayerElement.EReferenceMode.eDirect);
            var binormals = mesh.m_pool.m_Tangents
                            .Select((tan, idx) => {
                var b3 = Vector3.Cross(tan, mesh.m_pool.m_Normals[idx]) * tan.w;
                return(new Vector4(b3.x, b3.y, b3.z, 1));
            })
                            .ToList();

            CopyToFbx(layerElementBinormal.GetDirectArray(), binormals);
            layer0.SetBinormals(layerElementBinormal);

            var layerElementMaterial = FbxLayerElementMaterial.Create(fbxMesh, "materials");

            layerElementMaterial.SetMappingMode(FbxLayerElement.EMappingMode.eAllSame);
            layer0.SetMaterials(layerElementMaterial);

            // Export everything up to the last uvset containing data
            // even if some intermediate uvsets have no data.
            // Otherwise Unity will get the uvset numbering wrong on import

            List <List <Vector2> > uvSets = DemuxTexcoords(mesh.m_pool);

            for (int i = 0; i < uvSets.Count; i++)
            {
                FbxLayer layerN = fbxMesh.GetLayer(i);
                while (layerN == null)
                {
                    fbxMesh.CreateLayer();
                    layerN = fbxMesh.GetLayer(i);
                }
                var layerElementUV = FbxLayerElementUV.Create(fbxMesh, String.Format("uv{0}", i));
                layerElementUV.SetMappingMode(FbxLayerElement.EMappingMode.eByControlPoint);
                layerElementUV.SetReferenceMode(FbxLayerElement.EReferenceMode.eDirect);

                List <Vector2> uvSet = uvSets[i];
                if (uvSet == null)
                {
                    // Do nothing
                    // Replicates what the old fbx export code did; seems to work fine
                }
                else
                {
                    Debug.Assert(uvSet.Count == nVerts);
                    CopyToFbx(layerElementUV.GetDirectArray(), uvSet);
                }

                layerN.SetUVs(layerElementUV, FbxLayerElement.EType.eTextureDiffuse);
            }
            return(fbxMesh);
        }
Exemple #5
0
        // outputFile must be a full path.
        static void WriteObjectsAndConnections2(FbxExportGlobals G)
        {
            var payload = ExportCollector.GetExportPayload(
                AxisConvention.kFbxAccordingToUnity,
                includeLocalMediaContent: true);

            // Write out each brush entry's geometry.
            foreach (var brushMeshPayload in payload.groups.SelectMany(g => g.brushMeshes))
            {
                // This code used to not set the transform; check that it didn't cause issues
                Debug.Assert(brushMeshPayload.xform.isIdentity);
                FbxNode parentNode = GetGroupNode(G.m_manager, G.m_scene, brushMeshPayload.group);
                ExportMeshPayload_Global(G, brushMeshPayload, parentNode);
            }

            // Models with exportable meshes.
            foreach (var sameInstance in payload.modelMeshes.GroupBy(m => (m.model, m.modelId)))
            {
                var modelMeshPayloads = sameInstance.ToList();
                if (modelMeshPayloads.Count == 0)
                {
                    continue;
                }

                // All of these pieces will come from the same Widget and therefore will have
                // the same group id, root transform, etc
                var     first            = modelMeshPayloads[0];
                FbxNode parentParentNode = GetGroupNode(G.m_manager, G.m_scene, first.group);
                string  rootNodeName     = $"model_{first.model.GetExportName()}_{first.modelId}";
                if (modelMeshPayloads.Count == 1 && first.localXform.isIdentity)
                {
                    // Condense the two nodes into one; give the top-level node the same name
                    // it would have had had it been multi-level.
                    FbxNode newNode = ExportMeshPayload_Global(G, first, parentParentNode);
                    newNode.SetName(rootNodeName);
                }
                else
                {
                    FbxNode parentNode = FbxNode.Create(G.m_manager, rootNodeName);
                    parentNode.SetLocalTransform(first.parentXform);
                    parentParentNode.AddChild(parentNode);
                    foreach (var modelMeshPayload in modelMeshPayloads)
                    {
                        ExportMeshPayload_Local(G, modelMeshPayload, parentNode);
                    }
                }
            }

            foreach (ImageQuadPayload meshPayload in payload.imageQuads)
            {
                FbxNode groupNode = GetGroupNode(G.m_manager, G.m_scene, meshPayload.group);
                ExportMeshPayload_Global(G, meshPayload, groupNode);
            }

            // Things that can only be exported as transforms (videos, images, models, ...)
            foreach (var referenceThing in payload.referenceThings)
            {
                FbxNode node = FbxNode.Create(G.m_manager, "reference_" + referenceThing.name);
                node.SetLocalTransform(referenceThing.xform);
                GetGroupNode(G.m_manager, G.m_scene, referenceThing.group).AddChild(node);
            }
        }
Exemple #6
0
        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);
        }