今天在网上查找下心形算法公式，自己便按照公式写下来标记在博客，主要是方便以后查看！

        private int maxStep = 520;        private double radius;        private double centerPt;        private void CreateHeartLine()        {          /*RootCvs是Canvas控件*/            centerPt = RootCvs.Width / 2;            radius = RootCvs.Width / 6;            for (int i = 0; i < maxStep; i++)            {                var rect = new Rectangle                {                    Height = 5,                    Width = 5,                    Fill = Brushes.Red                };                double angle = 2 * Math.PI / maxStep * i;                double r = 2 * radius * (1 - Math.Sin(angle));                //圆形心                //double x = centerPt + radius * (2 * Math.Cos(angle) - Math.Cos(2 * angle));                //double y = centerPt + radius * (2 * Math.Sin(angle) - Math.Sin(2 * angle));                //桃形心                double x = centerPt + 16 * (Math.Sin(angle) * Math.Sin(angle) * Math.Sin(angle)) * 10;//                double y = centerPt + (13 * Math.Cos(angle) - 5 * Math.Cos(2 * angle) - 2 * Math.Cos(3 * angle) - Math.Cos(4 * angle)) * 10;//                Canvas.SetLeft(rect, x);                Canvas.SetTop(rect, y);                RootCvs.Children.Add(rect);            }        }