コード例 #1
0
        public void TestCirclesIntersects()
        {
            //create a few circles
            Circle circle1 = new Circle { Center = new Point(0, 0), Radius = 2 };
            Circle circle2 = new Circle { Center = new Point(0, 0), Radius = 3 };
            Circle circle3 = new Circle { Center = new Point(6, 0), Radius = 3 };
            Circle circle4 = new Circle { Center = new Point(1, 1), Radius = 3 };

            //non-Intersectsing circles
            Assert.IsFalse(circle1.Intersects(circle3));
            Assert.IsFalse(circle3.Intersects(circle1));
            Assert.IsFalse(circle1.Intersects(null));

            //touching circles
            Assert.IsTrue(circle2.Intersects(circle3));
            Assert.IsTrue(circle3.Intersects(circle2));

            //Intersectsing circles
            Assert.IsTrue(circle1.Intersects(circle2));
            Assert.IsTrue(circle2.Intersects(circle1));
            Assert.IsTrue(circle2.Intersects(circle4));
            Assert.IsTrue(circle4.Intersects(circle2));
            Assert.IsTrue(circle1.Intersects(circle4));
            Assert.IsTrue(circle4.Intersects(circle1));
            Assert.IsTrue(circle3.Intersects(circle4));
            Assert.IsTrue(circle4.Intersects(circle3));
        }
コード例 #2
0
ファイル: Circle.cs プロジェクト: thethreadpool/tinycodebits
        public bool Intersects(Circle circle)
        {
            //two circles intersect if the distance between the 2 centers is less than the sum of the 2 radii

            if (circle != null)
            {
                double centerDistance = Math.Sqrt(Math.Pow(circle.Center.X - Center.X, 2) + Math.Pow(circle.Center.Y - Center.Y, 2));
                if (centerDistance <= circle.Radius + Radius)
                    return true;
            }

            return false;
        }