示例#1
0
        /// <summary>
        /// rectから0より小さい領域を切り取ったRectangleを返す.
        /// </summary>
        public static Rectangle EnsureNoNegative(Rectangle rect)
        {
            var size = new Size(
                rect.Left < 0? rect.Width + rect.Left: rect.Width,
                rect.Top < 0? rect.Height + rect.Top: rect.Height
                );

            return(new Rectangle(
                       PointUtil.EnsureNotNegative(rect.Location),
                       size
                       ));
        }
示例#2
0
 public void TestMiddlePoint()
 {
     Assert.AreEqual(
         new Point(10, 10),
         PointUtil.MiddlePoint(new Point(0, 0), new Point(20, 20))
         );
     Assert.AreEqual(
         new Point(10, 10),
         PointUtil.MiddlePoint(new Point(20, 20), new Point(0, 0))
         );
     Assert.AreEqual(
         new Point(10, 10),
         PointUtil.MiddlePoint(new Point(20, 0), new Point(0, 20))
         );
     Assert.AreEqual(
         new Point(10, 10),
         PointUtil.MiddlePoint(new Point(0, 20), new Point(20, 0))
         );
 }
示例#3
0
        public void TestScaleWithCircumscribeRect()
        {
            var pts = new Point[] {
                new Point(10, 10),
                new Point(20, 10),
                new Point(20, 20),
                new Point(10, 20),
            };

            PointUtil.ScaleWithCircumscribeRect(pts, new SizeF(0.5f, 2));
            Assert.AreEqual(new Point(10, 10), pts[0]);
            Assert.AreEqual(new Point(15, 10), pts[1]);
            Assert.AreEqual(new Point(15, 30), pts[2]);
            Assert.AreEqual(new Point(10, 30), pts[3]);

            PointUtil.ScaleWithCircumscribeRect(pts, new SizeF(2, 0.5f));
            Assert.AreEqual(new Point(10, 10), pts[0]);
            Assert.AreEqual(new Point(20, 10), pts[1]);
            Assert.AreEqual(new Point(20, 20), pts[2]);
            Assert.AreEqual(new Point(10, 20), pts[3]);
        }
示例#4
0
 /// <summary>
 /// rectの中心点に対してptがどの方向にあるかを返す.
 /// 答えは Left や Up や None のように重なりがない。
 /// </summary>
 public static Directions GetDirectionStraightlyFromCenter(Rectangle rect, Point pt)
 {
     return(PointUtil.GetDirectionStraightly(GetCenter(rect), pt));
 }