private void LoadFromColladaSceneNode(ColladaSceneNodeBase node)
{
if (node.Type != ColladaSceneNodeBase.NodeType.Node && node.Type != ColladaSceneNodeBase.NodeType.Scene)
{
return;
}
// This is not correct. When using a skin there is an 'instance_controller'
if (node.Instance_Geometry != null)
{
ColladaMesh mesh = node.Instance_Geometry;
for (int iPart = 0; iPart < mesh.Parts.Count; iPart++)
{
ColladaMesh.PrimitiveList meshPart = mesh.Parts[iPart];
SkinnedMesh skinnedMesh = new SkinnedMesh(skinnedModel);
Matrix objectMatrix = node.GetFullMatrix() * Matrix.CreateRotationX(-MathHelper.PiOver2);
LoadMesh(skinnedMesh, mesh, meshPart, objectMatrix);
skinnedModel.Meshes.Add(skinnedMesh);
//model.FullData.ObjectMatrix = node.GetFullMatrix();
// TODO: this only counts when model is from max!
//model.FullData.ObjectMatrix = model.FullData.ObjectMatrix * Matrix.CreateRotationX( -MathHelper.PiOver2 );
}
}
for (int iNode = 0; iNode < node.Nodes.Count; iNode++)
{
LoadFromColladaSceneNode(node.Nodes[iNode]);
}
}
private void LoadMesh(SkinnedMesh mesh, ColladaMesh colladaMesh, ColladaMesh.PrimitiveList primitives, Matrix objectMatrix)
{
//EDIT: the vertices now include the objectmatrix, so this is always identity
objectMatrix = colladaMesh.objectMatrix;
mesh.Shader.World = Matrix.Identity;
mesh.Primitives = new Primitives();
mesh.Primitives.PrimitiveCount = primitives.PrimitiveCount;
mesh.Primitives.VertexCount = primitives.PrimitiveCount * 3;
if (primitives.PrimitiveCount * 3 >= int.MaxValue)
{
throw new Exception("Too many vertices");
}
int numVertices = primitives.PrimitiveCount * 3;
// TODO check if all inputs are available
/*if ( meshPart.ContainsInput( ColladaMesh.Input.InputSemantics.Position ) ) positions = new Vector3[ numVertices ];
* if ( meshPart.ContainsInput( ColladaMesh.Input.InputSemantics.Normal ) ) normals = new Vector3[ numVertices ];
* if ( meshPart.ContainsInput( ColladaMesh.Input.InputSemantics.Texcoord, 1 ) ) texCoords = new Vector3[ numVertices ];
* if ( meshPart.ContainsInput( ColladaMesh.Input.InputSemantics.TexTangent, 1 ) ) tangents = new Vector3[ numVertices ];*/
SkinnedTangentVertex[] vertices = new SkinnedTangentVertex[numVertices];
for (int i = 0; i < numVertices; i++)
{
SkinnedTangentVertex v = new SkinnedTangentVertex();
v.pos = primitives.GetVector3(ColladaMesh.Input.InputSemantics.Position, i); //GetPosition( i );
v.normal = primitives.GetVector3(ColladaMesh.Input.InputSemantics.Normal, i);
// Texture Coordinates
Vector3 texcoord = Vector3.Zero;
if (primitives.ContainsInput(ColladaMesh.Input.InputSemantics.Texcoord, 1))
{
texcoord = primitives.GetVector3(ColladaMesh.Input.InputSemantics.Texcoord, 1, i);
texcoord.Y = 1.0f - texcoord.Y; // V coordinate is inverted in max
}
v.uv = new Vector2(texcoord.X, texcoord.Y);
// Tangent
Vector3 tangent = Vector3.Zero;
if (primitives.ContainsInput(ColladaMesh.Input.InputSemantics.TexTangent, 1))
{
v.tangent = primitives.GetVector3(ColladaMesh.Input.InputSemantics.TexTangent, 1, i);
}
// Bone weights and joint indices
int positionIndex = primitives.GetSourceIndex(
primitives.GetInput(ColladaMesh.Input.InputSemantics.Position), i);
// WARNING: THIS IS EXTREMELY IMPORTANT AND COSTED MORE THAN 6 HOURS DEBUGGING
// Indexes are PREMULTIPLIED BY 3!!!
v.blendIndices = colladaMesh.vertexSkinJoints[positionIndex];
//v.blendIndices = Vector3.One;
v.blendIndices = v.blendIndices * 3;
v.blendWeights = colladaMesh.vertexSkinWeights[positionIndex];
v.pos = Vector3.Transform(v.pos, objectMatrix);
v.normal = Vector3.Transform(v.normal, objectMatrix);
vertices[i] = v;
}
//vertices[ 0 ].pos = Vector3.Transform( Vector3.Zero, Matrix.Invert( objectMatrix ) );
//vertices[ 0 ].pos = Vector3.Zero;
mesh.Primitives.InitializeFromVertices(skinnedModel.Game, vertices, SkinnedTangentVertex.SizeInBytes);
//CalculateBoundingBox();
//CalculateBoundingSphere();
//TODO: Material, maybe not really a good way of doing this
//LoadDataFromColladaMaterial( meshPart.Material );
}
