public Rhino.Render.RenderTexture GetRenderTexture(int textureIndex, Rhino.Display.Color4f factor) { System.Drawing.Bitmap bmp = GetTextureBitmap(textureIndex, out string name); if (bmp == null) { return(null); } int width = bmp.Width; int height = bmp.Height; System.Drawing.Bitmap resolvedBmp = new System.Drawing.Bitmap(width, height); for (int i = 0; i < width; i++) { for (int j = 0; j < height; j++) { Rhino.Display.Color4f colorAt = new Rhino.Display.Color4f(bmp.GetPixel(i, j)); float r = GltfUtils.Clamp(colorAt.R * factor.R, 0.0f, 1.0f); float g = GltfUtils.Clamp(colorAt.G * factor.G, 0.0f, 1.0f); float b = GltfUtils.Clamp(colorAt.B * factor.B, 0.0f, 1.0f); float a = GltfUtils.Clamp(colorAt.A * factor.A, 0.0f, 1.0f); Rhino.Display.Color4f colorFinal = new Rhino.Display.Color4f(r, g, b, a); resolvedBmp.SetPixel(i, j, colorFinal.AsSystemColor()); } } Rhino.Render.RenderTexture renderTexture = Rhino.Render.RenderTexture.NewBitmapTexture(resolvedBmp, doc); renderTexture.BeginChange(Rhino.Render.RenderContent.ChangeContexts.Program); renderTexture.Name = name; renderTexture.EndChange(); return(renderTexture); }
private bool AttemptConvertVertexColors(glTFLoader.Schema.MeshPrimitive primitive, Rhino.Geometry.Mesh rhinoMesh) { if (!primitive.Attributes.TryGetValue(VertexColorAttributeTag, out int vertexColorAccessorIndex)) { return(false); } glTFLoader.Schema.Accessor vertexColorAccessor = converter.GetAccessor(vertexColorAccessorIndex); if (vertexColorAccessor == null) { return(false); } glTFLoader.Schema.BufferView vertexColorBufferView = converter.GetBufferView(vertexColorAccessor.BufferView); if (vertexColorBufferView == null) { return(false); } byte[] vertexColorBuffer = converter.GetBuffer(vertexColorBufferView.Buffer); if (vertexColorBuffer == null) { return(false); } int vertexColorOffset = vertexColorAccessor.ByteOffset + vertexColorBufferView.ByteOffset; int vertexColorStride = vertexColorBufferView.ByteStride.HasValue ? vertexColorBufferView.ByteStride.Value : TotalStride(vertexColorAccessor.ComponentType, vertexColorAccessor.Type); int vertexColorComponentCount = ComponentsCount(vertexColorAccessor.Type); int vertexColorComponentSize = ComponentSize(vertexColorAccessor.ComponentType); List <float> vertexColors = new List <float>(); for (int i = 0; i < vertexColorAccessor.Count; i++) { int vertexColorIndex = vertexColorOffset + i * vertexColorStride; for (int j = 0; j < vertexColorComponentCount; j++) { int location = vertexColorIndex + j * vertexColorComponentSize; float channelColor = 0.0f; if (vertexColorAccessor.ComponentType == glTFLoader.Schema.Accessor.ComponentTypeEnum.FLOAT) { channelColor = BitConverter.ToSingle(vertexColorBuffer, location); } else if (vertexColorAccessor.ComponentType == glTFLoader.Schema.Accessor.ComponentTypeEnum.UNSIGNED_SHORT) { ushort value = BitConverter.ToUInt16(vertexColorBuffer, location); channelColor = (float)value / (float)ushort.MaxValue; } else if (vertexColorAccessor.ComponentType == glTFLoader.Schema.Accessor.ComponentTypeEnum.UNSIGNED_BYTE) { byte value = vertexColorBuffer[location]; channelColor = (float)value / (float)byte.MaxValue; } vertexColors.Add(channelColor); } } int countVertexColors = vertexColors.Count / vertexColorComponentCount; for (int i = 0; i < countVertexColors; i++) { int index = i * vertexColorComponentCount; if (vertexColorAccessor.Type == glTFLoader.Schema.Accessor.TypeEnum.VEC3) { float r = GltfUtils.Clamp(vertexColors[index + 0], 0.0f, 1.0f); float g = GltfUtils.Clamp(vertexColors[index + 1], 0.0f, 1.0f); float b = GltfUtils.Clamp(vertexColors[index + 2], 0.0f, 1.0f); Rhino.Display.Color4f color = new Rhino.Display.Color4f(r, g, b, 1.0f); rhinoMesh.VertexColors.Add(color.AsSystemColor()); } else if (vertexColorAccessor.Type == glTFLoader.Schema.Accessor.TypeEnum.VEC4) { float r = GltfUtils.Clamp(vertexColors[index + 0], 0.0f, 1.0f); float g = GltfUtils.Clamp(vertexColors[index + 1], 0.0f, 1.0f); float b = GltfUtils.Clamp(vertexColors[index + 2], 0.0f, 1.0f); float a = GltfUtils.Clamp(vertexColors[index + 3], 0.0f, 1.0f); Rhino.Display.Color4f color = new Rhino.Display.Color4f(r, g, b, a); rhinoMesh.VertexColors.Add(color.AsSystemColor()); } } return(true); }