不允许顶点进入的球体的定义。这可实现与动画布料的碰撞。
(collisionSphereRadius, collisionSphereDistance) 对为每个布料顶点定义一个球体。球体的 中心位于位置 constrainPosition - constrainNormal * (collisionSphereRadius + collisionSphereDistance),其半径 为 collisionSphereRadius,其中 constrainPosition 和 constrainNormal 是 SkinnedMeshRenderer 生成的 顶点位置和法线。Cloth 确保布料顶点不进入该球体。 典型用例是,将 collisionSphereDistance 设置为零,将 collisionSphereRadius 设置为较大的值 写入三角形大小。在该设置中,布料与蒙皮网格碰撞。 默认:0.0 范围:[0,inf)。
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