与Libgdx的圆和多边形碰撞 [英] Circle and Polygon Collision with Libgdx

问题描述

Libgdx中是否有办法验证Polygon和Circle之间的碰撞？

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

我看到 Intersector class但只找到Circle和Rectangle的碰撞测试。那么任何其他Polygon怎么样？

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最好的方法是什么？

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

推荐答案

因此，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.

这是代码：

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;
}

这篇关于与Libgdx的圆和多边形碰撞的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！