상속: BaseEffect
		public void BulgeEffect2 ()
		{
			var src = GetSourceImage ("input.png");

			var effect = new BulgeEffect (12, new PointD (20, -20));
			effect.Render (src);

			Compare (src, "bulge2.png");
		}
		public void BulgeEffect1 ()
		{
			var src = GetSourceImage ("input.png");

			var effect = new BulgeEffect ();
			effect.Render (src);

			Compare (src, "bulge1.png");
		}