actionscript-3 - 检查 Away3D 中两个边界框之间的碰撞？

Question

我需要在 Away3D 中做一些简单的碰撞检测。我找到了away3d.bounds.AxisAlignedBoundingBox类，但似乎我只能检查边界框和向量之间的碰撞。

有没有办法检查两个边界框之间的碰撞？

Answer 1

如果您正在使用/可以升级到 4.4.x，请查看 Mesh.worldBounds，特别是 wordBounds.overlap(someOtherWorldBounds)。

示例（省略了 away3d 设置）：

// setup objects and materials
cubeMaterial:ColorMaterial;
cube:Mesh;

sphereMaterial:ColorMaterial;
sphere:Mesh;

collideMaterial:ColorMaterial;

cubeMaterial = new ColorMaterial(0x3333FF);
cube = new Mesh(new CubeGeometry(), cubeMaterial);
cube.x = -100;
cube.showBounds = true;

sphereMaterial = new ColorMaterial(0xFF3333);
sphere = new Mesh(new SphereGeometry(), sphereMaterial);
sphere.x = 100;
sphere.showBounds = true;

collideMaterial = new ColorMaterial(0x33FF33);

在您的 enterFrame 处理程序中：

// process your object movement here
if (cube.worldBounds.overlaps(sphere.worldBounds) cube.material = collideMaterial;
else cube.material = cubeMaterial;
view.render();