c# 圆上坐标点

var x=-33204.0924438;  //圆心x

var y=-9512.41208658; //圆心y

var r=1000;//半径

var angle=30;//角度

var tmpX = x + r * Math.Cos(angle * 3.14 / 180); 
var tmpY = y + r * Math.Sin(angle * 3.14 / 180);

变换角度0-360

From:https://www.cnblogs.com/xuejianxiyang/p/9354338.html