public void AddGeometryData(MeshPartGeometryData data, MeshMaterial material, Matrix transform)
{
if (!parts.ContainsKey(material))
{
throw new InvalidOperationException("Material not created by the meshbuilder");
}
var p = parts[material];
var xTransform = transform.xna();
var sPositions = data.GetSourceVector3(MeshPartGeometryData.Semantic.Position);
var sNormals = data.GetSourceVector3(MeshPartGeometryData.Semantic.Normal);
var sTexcoords = data.GetSourceVector2(MeshPartGeometryData.Semantic.Texcoord);
var nPositions = new XnaVector3[sPositions.Length];
var nNormals = new XnaVector3[sNormals.Length];
var nTexcoords = sTexcoords;
XnaVector3.Transform(sPositions, ref xTransform, nPositions);
XnaVector3.TransformNormal(sNormals, ref xTransform, nNormals);
p.Positions.AddRange(nPositions);
p.Normals.AddRange(nNormals);
p.Texcoords.AddRange(nTexcoords);
}
