已知一个点到两个点的距离和这两个点的坐标，怎么求这个点的坐标，用js实现

Question

哪位大神知道

已知一个点到两个点的距离和这两个点的坐标，怎么求这个点的坐标，用js实现

Answer 1

按照数学公式算啊，这还用问

var x1 = 1, y1 = 3, x2 = 4, y2 = 7, l1 = 3, l2 = 4;
var l = Math.sqrt(Math.pow(x1 - x2, 2) + Math.pow(y1 - y2, 2), 2);
var y = (Math.pow(l1, 2) - Math.pow(l2, 2) + Math.pow(l, 2))/2/l;

var xd = Math.sqrt(Math.pow(l1, 2) - Math.pow(y, 2)), yd = y;
var sin = (x2 - x1)/l, cos = (y2 - y1)/l;

var x0 = x1 + xd*cos - yd*sin, y0 = y1 + xd*sin + yd*cos

console.log(x0 + " " + y0);

var x0 = x1 + xd*cos + yd*sin, y0 = y1 - xd*sin + yd*cos

console.log(x0 + " " + y0);

对应的公式自己算去