获取多边形形状体的顶点列表 [英] Get vertice list of a polygon shape body

问题描述

如何在libgdx中获取特定多边形体的顶点列表？

How do you get a list of vertices for a specific polygon body in libgdx?

像这样：

public Array<Vector2> getVerts(Body body){
    Array<Vector2>verts = null;

    // can't find how to look them up properly anywhere

    return verts;
}

谢谢！

推荐答案

基于@James Webster的代码：

Based on @James Webster's code:

Array<Vector2> verts = new Array<Vector2>();
Fixture f = body.getFixtureList().get(0);
PolygonShape s = f.shape;

// this is needed to temporarily keep the vertex, getVertex is a void method
Vector2 tmp = new Vector2();
for (int i = 0; i < s.getVertexCount(); i++) {
    // fill tmp with the vertex
    s.getVertex(i, tmp));
    verts.add(new Vector2(tmp));
}

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