private SEAObject3D AppendDummy(Scene scene, Node node, SEAObject3D parent)
{
int sIndex = GetIndexByTag(node);
if (sIndex != -1) return (SEACamera)Writer.Objects[sIndex];
SEADummy dummy = new SEADummy(GetValidString(objects, node.Name));
dummy.transform = To3x4Array( node.Transform );
dummy.width = dummy.height = dummy.depth = 100;
objects.Add(dummy);
Writer.AddObject(dummy);
dummy.tag = node;
return dummy;
}