控制该碰撞体创建的所有边缘的半径。
边缘半径控制复合碰撞体所有边缘向外延伸的半径。当某个边缘的半径为零时,它实际上是无限薄的。当某个边缘的半径大于零时,每个边缘都像一个具有圆形末端的胶囊形状。这会产生具有圆角的复合碰撞体。
务必了解当使用 Rigidbody2D.useAutoMass 时,更改边缘半径尽管改变了碰撞面积,但不会改变已计算的 Rigidbody2D.mass。计算质量时将边缘半径视作零,即,未使用边缘半径。
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