使用 Libgdx 的圆和多边形碰撞

本文介绍了使用 Libgdx 的圆和多边形碰撞的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

Libgdx 中有没有办法验证多边形和圆之间的碰撞?

Is there a way in Libgdx to verify a collision between a Polygon and a Circle?

我看到了 Intersector 类，但只发现了 Circle 和 Rectangle 的碰撞测试.其他多边形呢?

I saw the Intersector class but only found collision test for Circle and Rectangle. What about any other Polygon?

如果我需要手动完成，使用 Libgdx 的最佳方法是什么?

If I need to do it manually, what's the best way to do that using Libgdx?

推荐答案

所以，我设法在 Circle 和 Polygon 之间创建了一个碰撞测试方法.至少，它对我有用.

So, I managed to create a collision test method between a Circle and a Polygon. At least, it works for me.

代码如下:

public boolean overlaps(Polygon polygon, Circle circle) { float []vertices=polygon.getTransformedVertices(); Vector2 center=new Vector2(circle.x, circle.y); float squareRadius=circle.radius*circle.radius; for (int i=0;i<vertices.length;i+=2){ if (i==0){ if (Intersector.intersectSegmentCircle(new Vector2(vertices[vertices.length-2], vertices[vertices.length-1]), new Vector2(vertices[i], vertices[i+1]), center, squareRadius)) return true; } else { if (Intersector.intersectSegmentCircle(new Vector2(vertices[i-2], vertices[i-1]), new Vector2(vertices[i], vertices[i+1]), center, squareRadius)) return true; } } return false; }