public Billboard()
{
_textureCoordinates = new RectangleH(Vector2H.Zero, new Vector2H(1.0, 1.0));
_color = Color.White;
}
public Billboard()
{
_textureCoordinates = new RectangleH(Vector2H.Zero, new Vector2H(1.0, 1.0));
_color = Color.White;
}