移动两个圆圈分开两个圆圈

Question

如何通过移动它们来分隔两个不同的圆圈，而不只是一个？这是我用来通过移动其中一个圆圈来分隔圆圈的代码。我对矢量知之甚少。 ＆＃39; _＆＃39;

if (i == j)
    return;
var ref1 = a; // a and b are circles
var ref2 = b;
var x = ref1.x - ref2.x;
var y = ref1.y - ref2.y;
var d = Math.hypot(x, y);
var r = toRadius(a.mass) + toRadius(b.mass);
if (d < r) {
    x /= d;
    y /= d;
    ref2.x += (ref1.x - x * r - ref2.x) * 0.2;
    ref2.y += (ref1.y - y * r - ref2.y) * 0.2;
}

Answer 1

我找到了一个有效的解决方案：

if (i == j)
    return;
var ref1 = a; // a and b are circles
var ref2 = b;
var x = ref1.x - ref2.x;
var y = ref1.y - ref2.y;
var d = Math.hypot(x, y);
var r = toRadius(a.mass) + toRadius(b.mass);
if (d < r) {
    x /= d;
    y /= d;
    ref2.x += (ref1.x - x * r - ref2.x) * 0.2;
    ref2.y += (ref1.y - y * r - ref2.y) * 0.2;
    ref1.x += (ref2.x + x * r - ref1.x) * 0.2;
    ref1.y += (ref2.y + y * r - ref1.y) * 0.2;
}