WP通过触摸轨迹计算水平方向与轨迹的角度

来源：互联网发布：美的电磁炉哪款好知乎编辑：程序博客网时间：2024/05/14 02:24

容器的左上角为原点，代码如下

void JudgeMoveDirection(Point start, Point end)
        {
            //角度
            double angle = 0;
            if (Math.Abs(end.X - star.X) < 1 && Math.Abs(end.Y - star.Y) < 1)
            {
                angle = 0;
            }
            else if (end.X > start.X)
            {
                if (end.Y > start.Y)
                {
                    angle = 360 - Math.Atan((end.Y - start.X) * 1.0 / (end.X - start.X)) * 180 / Math.PI;
                }
                else
                {
                    angle = Math.Atan((start.Y - end.Y) * 1.0 / (end.X - start.X)) * 180 / Math.PI;
                }
            }
            else
            {
                if (end.Y > start.Y)
                {
                    angle =  Math.Atan((end.Y - start.X) * 1.0 / (start.X - end.X)) * 180 / Math.PI;
                }
                else
                {
                    angle = Math.Atan((start.Y - end.Y) * 1.0 / (start.X - end.X)) * 180 / Math.PI;
                }
            }
            txtbContent.Text = angle.ToString()+"\nX:"+start.X.ToString()+ "\n" + "\nY:" + start.Y.ToString() + "\nX:" + end.X.ToString() + "\n" + "\nY:" + end.Y.ToString();
        }

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