private void DrawModel(NursiaModel model)
{
if (!_beginCalled)
{
throw new Exception("Begin wasnt called");
}
model.UpdateNodesAbsoluteTransforms();
using (var transformScope = new TransformScope(_context, model.Transform))
{
foreach (var mesh in model.Meshes)
{
DrawMeshNode(mesh);
}
}
}
private void DrawMeshNode(MeshNode meshNode)
{
foreach (var part in meshNode.Parts)
{
var boundingSphere = part.BoundingSphere.Transform(meshNode.AbsoluteTransform * _context.World);
if (_context.Frustrum.Contains(boundingSphere) == ContainmentType.Disjoint)
{
continue;
}
// If part has bones, then parent node transform had been already
// applied to bones transform
// Thus to avoid applying parent transform twice, we use
// ordinary Transform(not AbsoluteTransform) for parts with bones
using (var scope = new TransformScope(_context,
part.Bones.Count > 0 ? Matrix.Identity : meshNode.AbsoluteTransform))
{
DrawMeshPart(part);
}
}
}
