bool ParseNodeInstanceGeometry(Mat4 nodeTransform, XmlNode instanceGeometry)
{
string url = XmlUtils.GetAttribute(instanceGeometry, "url");
bool nodeTransformIdentity = nodeTransform.Equals(Mat4.Identity, .0001f);
Quat nodeRotation = nodeTransform.ToMat3().ToQuat().GetNormalize();
string geometryId = GetIdFromURL(url);
if (string.IsNullOrEmpty(geometryId))
{
Error("Invalid \"url\" attribute specified for \"instance_geometry\". Url: \"{0}\".", url);
return(false);
}
GeometryItem geometry;
if (!generatedGeometries.TryGetValue(geometryId, out geometry))
{
Error("Geometry with id \"{0}\" is not exists.", geometryId);
return(false);
}
foreach (GeometryItem.SubMesh geometrySubMesh in geometry.SubMeshes)
{
SubMeshVertex[] newVertices = new SubMeshVertex[geometrySubMesh.Vertices.Length];
for (int n = 0; n < newVertices.Length; n++)
{
SubMeshVertex vertex = geometrySubMesh.Vertices[n];
if (!nodeTransformIdentity)
{
vertex.position = nodeTransform * vertex.position;
vertex.normal = (nodeRotation * vertex.normal).GetNormalize();
}
newVertices[n] = vertex;
}
MySceneSubMesh sceneSubMesh = new MySceneSubMesh(newVertices, geometrySubMesh.Indices,
geometrySubMesh.TextureCoordCount, geometrySubMesh.VertexColors, geometrySubMesh.Material);
generatedSubMeshes.Add(sceneSubMesh);
}
return(true);
}
