public void Draw(Vector position, Vector scale, Sprite sprite, bool useWorldSpace)
{
if (sprite != null)// && camera.viewport.Contain(gameObject.transform.position))
{
Vector delta = scale * 0.5f;
Matrix3x3 currentMatrix = useWorldSpace ? worldViewMatrix : screenViewMatrix;
Vector from = Matrix3x3.Multiply(currentMatrix, position - delta);
Vector to = Matrix3x3.Multiply(currentMatrix, position + delta);
float x = (from.X + to.X) * 0.5F;
float y = (from.Y + to.Y) * 0.5F;
float w = GameMath.Abs(from.X - to.X);
float h = GameMath.Abs(from.Y - to.Y);
draw(x, y, w, h, sprite.GetIntPtr(), sprite.Width, sprite.Height);
}
}