public static ModelData Load(Stream stream)
{
ModelData modelData = new ModelData();
Collada.ColladaRoot colladaRoot = new Collada.ColladaRoot(XElement.Load(stream));
if (colladaRoot.Scene.VisualScene.Nodes.Count > 1)
{
ModelBoneData modelBoneData = new ModelBoneData();
modelData.Bones.Add(modelBoneData);
modelBoneData.ParentBoneIndex = -1;
modelBoneData.Name = string.Empty;
modelBoneData.Transform = Matrix.Identity;
using (List <Collada.ColladaNode> .Enumerator enumerator = colladaRoot.Scene.VisualScene.Nodes.GetEnumerator())
{
while (enumerator.MoveNext())
{
Collada.ColladaNode node = enumerator.Current;
Collada.LoadNode(modelData, modelBoneData, node, Matrix.CreateScale(colladaRoot.Asset.Meter));
}
goto IL_104;
}
}
foreach (Collada.ColladaNode node2 in colladaRoot.Scene.VisualScene.Nodes)
{
Collada.LoadNode(modelData, null, node2, Matrix.CreateScale(colladaRoot.Asset.Meter));
}
IL_104:
foreach (ModelBuffersData modelBuffersData in modelData.Buffers)
{
Collada.IndexVertices(modelBuffersData.VertexDeclaration.VertexStride, modelBuffersData.Vertices, out modelBuffersData.Vertices, out modelBuffersData.Indices);
}
return(modelData);
}
private static ModelMeshData LoadGeometry(ModelData data, ModelBoneData parentBoneData, Collada.ColladaGeometry geometry)
{
ModelMeshData modelMeshData = new ModelMeshData();
data.Meshes.Add(modelMeshData);
modelMeshData.Name = parentBoneData.Name;
modelMeshData.ParentBoneIndex = data.Bones.IndexOf(parentBoneData);
bool flag = false;
foreach (Collada.ColladaPolygons polygons in geometry.Mesh.Polygons)
{
ModelMeshPartData modelMeshPartData = Collada.LoadPolygons(data, polygons);
modelMeshData.MeshParts.Add(modelMeshPartData);
modelMeshData.BoundingBox = (flag ? BoundingBox.Union(modelMeshData.BoundingBox, modelMeshPartData.BoundingBox) : modelMeshPartData.BoundingBox);
flag = true;
}
return(modelMeshData);
}
private static ModelBoneData LoadNode(ModelData data, ModelBoneData parentBoneData, Collada.ColladaNode node, Matrix transform)
{
ModelBoneData modelBoneData = new ModelBoneData();
data.Bones.Add(modelBoneData);
modelBoneData.ParentBoneIndex = ((parentBoneData != null) ? data.Bones.IndexOf(parentBoneData) : -1);
modelBoneData.Name = node.Name;
modelBoneData.Transform = node.Transform * transform;
foreach (Collada.ColladaNode node2 in node.Nodes)
{
Collada.LoadNode(data, modelBoneData, node2, Matrix.Identity);
}
foreach (Collada.ColladaGeometry geometry in node.Geometries)
{
Collada.LoadGeometry(data, modelBoneData, geometry);
}
return(modelBoneData);
}
private static void SCModelWriter(MemoryStream memoryStream, FileStream fileStream)
{
ModelData modelData = Collada.Load(fileStream);
ModelContentWriter.Write(memoryStream, modelData, Vector3.One);
}
private static ModelMeshPartData LoadPolygons(ModelData data, Collada.ColladaPolygons polygons)
{
ModelMeshPartData modelMeshPartData = new ModelMeshPartData();
int num = 0;
Dictionary <VertexElement, Collada.ColladaInput> dictionary = new Dictionary <VertexElement, Collada.ColladaInput>();
foreach (Collada.ColladaInput colladaInput in polygons.Inputs)
{
string str = (colladaInput.Set == 0) ? string.Empty : colladaInput.Set.ToString(CultureInfo.InvariantCulture);
if (colladaInput.Semantic == "POSITION")
{
dictionary[new VertexElement(num, VertexElementFormat.Vector3, "POSITION" + str)] = colladaInput;
num += 12;
}
else if (colladaInput.Semantic == "NORMAL")
{
dictionary[new VertexElement(num, VertexElementFormat.Vector3, "NORMAL" + str)] = colladaInput;
num += 12;
}
else if (colladaInput.Semantic == "TEXCOORD")
{
dictionary[new VertexElement(num, VertexElementFormat.Vector2, "TEXCOORD" + str)] = colladaInput;
num += 8;
}
else if (colladaInput.Semantic == "COLOR")
{
dictionary[new VertexElement(num, VertexElementFormat.NormalizedByte4, "COLOR" + str)] = colladaInput;
num += 4;
}
}
VertexDeclaration vertexDeclaration = new VertexDeclaration(Enumerable.ToArray <VertexElement>(dictionary.Keys));
ModelBuffersData modelBuffersData = Enumerable.FirstOrDefault <ModelBuffersData>(data.Buffers, (ModelBuffersData vd) => vd.VertexDeclaration == vertexDeclaration);
if (modelBuffersData == null)
{
modelBuffersData = new ModelBuffersData();
data.Buffers.Add(modelBuffersData);
modelBuffersData.VertexDeclaration = vertexDeclaration;
}
modelMeshPartData.BuffersDataIndex = data.Buffers.IndexOf(modelBuffersData);
int num2 = polygons.P.Count / polygons.Inputs.Count;
List <int> list = new List <int>();
if (polygons.VCount.Count == 0)
{
int num3 = 0;
for (int i = 0; i < num2 / 3; i++)
{
list.Add(num3);
list.Add(num3 + 2);
list.Add(num3 + 1);
num3 += 3;
}
}
else
{
int num4 = 0;
foreach (int num5 in polygons.VCount)
{
if (num5 == 3)
{
list.Add(num4);
list.Add(num4 + 2);
list.Add(num4 + 1);
num4 += 3;
}
else
{
if (num5 != 4)
{
throw new NotSupportedException("Collada polygons with less than 3 or more than 4 vertices are not supported.");
}
list.Add(num4);
list.Add(num4 + 2);
list.Add(num4 + 1);
list.Add(num4 + 2);
list.Add(num4);
list.Add(num4 + 3);
num4 += 4;
}
}
}
int vertexStride = modelBuffersData.VertexDeclaration.VertexStride;
int num6 = modelBuffersData.Vertices.Length;
modelBuffersData.Vertices = Collada.ExtendArray <byte>(modelBuffersData.Vertices, list.Count * vertexStride);
using (BinaryWriter binaryWriter = new BinaryWriter(new MemoryStream(modelBuffersData.Vertices, num6, list.Count * vertexStride)))
{
bool flag = false;
foreach (KeyValuePair <VertexElement, Collada.ColladaInput> keyValuePair in dictionary)
{
VertexElement key = keyValuePair.Key;
Collada.ColladaInput value = keyValuePair.Value;
if (key.Semantic.StartsWith("POSITION"))
{
for (int j = 0; j < list.Count; j++)
{
float[] array = value.Source.Accessor.Source.Array;
int offset = value.Source.Accessor.Offset;
int stride = value.Source.Accessor.Stride;
int num7 = polygons.P[list[j] * polygons.Inputs.Count + value.Offset];
binaryWriter.BaseStream.Position = (long)(j * vertexStride + key.Offset);
float num8 = array[offset + stride * num7];
float num9 = array[offset + stride * num7 + 1];
float num10 = array[offset + stride * num7 + 2];
modelMeshPartData.BoundingBox = (flag ? BoundingBox.Union(modelMeshPartData.BoundingBox, new Vector3(num8, num9, num10)) : new BoundingBox(num8, num9, num10, num8, num9, num10));
flag = true;
binaryWriter.Write(num8);
binaryWriter.Write(num9);
binaryWriter.Write(num10);
}
}
else if (key.Semantic.StartsWith("NORMAL"))
{
for (int k = 0; k < list.Count; k++)
{
float[] array2 = value.Source.Accessor.Source.Array;
int offset2 = value.Source.Accessor.Offset;
int stride2 = value.Source.Accessor.Stride;
int num11 = polygons.P[list[k] * polygons.Inputs.Count + value.Offset];
binaryWriter.BaseStream.Position = (long)(k * vertexStride + key.Offset);
float num12 = array2[offset2 + stride2 * num11];
float num13 = array2[offset2 + stride2 * num11 + 1];
float num14 = array2[offset2 + stride2 * num11 + 2];
float num15 = 1f / (float)Math.Sqrt(num12 * num12 + num13 * num13 + num14 * num14);
binaryWriter.Write(num15 * num12);
binaryWriter.Write(num15 * num13);
binaryWriter.Write(num15 * num14);
}
}
else if (key.Semantic.StartsWith("TEXCOORD"))
{
for (int l = 0; l < list.Count; l++)
{
float[] array3 = value.Source.Accessor.Source.Array;
int offset3 = value.Source.Accessor.Offset;
int stride3 = value.Source.Accessor.Stride;
int num16 = polygons.P[list[l] * polygons.Inputs.Count + value.Offset];
binaryWriter.BaseStream.Position = (long)(l * vertexStride + key.Offset);
binaryWriter.Write(array3[offset3 + stride3 * num16]);
binaryWriter.Write(1f - array3[offset3 + stride3 * num16 + 1]);
}
}
else
{
if (!key.Semantic.StartsWith("COLOR"))
{
throw new Exception();
}
for (int m = 0; m < list.Count; m++)
{
float[] array4 = value.Source.Accessor.Source.Array;
int offset4 = value.Source.Accessor.Offset;
int stride4 = value.Source.Accessor.Stride;
int num17 = polygons.P[list[m] * polygons.Inputs.Count + value.Offset];
binaryWriter.BaseStream.Position = (long)(m * vertexStride + key.Offset);
Color color = new Color(array4[offset4 + stride4 * num17], array4[offset4 + stride4 * num17 + 1], array4[offset4 + stride4 * num17 + 2], array4[offset4 + stride4 * num17 + 3]);
binaryWriter.Write(color.PackedValue);
}
}
}
}
modelMeshPartData.StartIndex = num6 / vertexStride;
modelMeshPartData.IndicesCount = list.Count;
return(modelMeshPartData);
}
public static void WriteModel(Stream mainStream, Stream daeStream)
{
BinaryWriter binaryWriter = new BinaryWriter(mainStream, Encoding.UTF8, true);
binaryWriter.Write(true);
Matrix m = Matrix.CreateScale(new Vector3(1f, 1f, 1f));
ModelData modelData = Collada.Load(daeStream);
binaryWriter.Write(modelData.Bones.Count);
foreach (ModelBoneData current in modelData.Bones)
{
Matrix matrix = (current.ParentBoneIndex < 0) ? (current.Transform * m) : current.Transform;
binaryWriter.Write(current.ParentBoneIndex);
binaryWriter.Write(current.Name);
binaryWriter.Write(matrix.M11);
binaryWriter.Write(matrix.M12);
binaryWriter.Write(matrix.M13);
binaryWriter.Write(matrix.M14);
binaryWriter.Write(matrix.M21);
binaryWriter.Write(matrix.M22);
binaryWriter.Write(matrix.M23);
binaryWriter.Write(matrix.M24);
binaryWriter.Write(matrix.M31);
binaryWriter.Write(matrix.M32);
binaryWriter.Write(matrix.M33);
binaryWriter.Write(matrix.M34);
binaryWriter.Write(matrix.M41);
binaryWriter.Write(matrix.M42);
binaryWriter.Write(matrix.M43);
binaryWriter.Write(matrix.M44);
}
binaryWriter.Write(modelData.Meshes.Count);
foreach (ModelMeshData current2 in modelData.Meshes)
{
binaryWriter.Write(current2.ParentBoneIndex);
binaryWriter.Write(current2.Name);
binaryWriter.Write(current2.MeshParts.Count);
binaryWriter.Write(current2.BoundingBox.Min.X);
binaryWriter.Write(current2.BoundingBox.Min.Y);
binaryWriter.Write(current2.BoundingBox.Min.Z);
binaryWriter.Write(current2.BoundingBox.Max.X);
binaryWriter.Write(current2.BoundingBox.Max.Y);
binaryWriter.Write(current2.BoundingBox.Max.Z);
foreach (ModelMeshPartData current3 in current2.MeshParts)
{
binaryWriter.Write(current3.BuffersDataIndex);
binaryWriter.Write(current3.StartIndex);
binaryWriter.Write(current3.IndicesCount);
binaryWriter.Write(current3.BoundingBox.Min.X);
binaryWriter.Write(current3.BoundingBox.Min.Y);
binaryWriter.Write(current3.BoundingBox.Min.Z);
binaryWriter.Write(current3.BoundingBox.Max.X);
binaryWriter.Write(current3.BoundingBox.Max.Y);
binaryWriter.Write(current3.BoundingBox.Max.Z);
}
}
binaryWriter.Write(modelData.Buffers.Count);
foreach (ModelBuffersData current4 in modelData.Buffers)
{
binaryWriter.Write(current4.VertexDeclaration.VertexElements.Length);
foreach (VertexElement current5 in current4.VertexDeclaration.VertexElements)
{
binaryWriter.Write(current5.Offset);
binaryWriter.Write((int)current5.Format);
binaryWriter.Write(current5.Semantic);
}
binaryWriter.Write(current4.Vertices.Length);
binaryWriter.Write(current4.Vertices);
binaryWriter.Write(current4.Indices.Length);
binaryWriter.Write(current4.Indices);
}
}
