应用于源和目标之间计算距离的缩放。
在针对基于距离的力计算源和目标之间的距离时（如反线性或平方倒数），随后会按此值缩放该距离。这会改变所使用的有效距离，而不会改变特效器起作用的实际距离，因为这始终由碰撞体控制。
这在使用非常大或非常小的碰撞体时可能十分有用，从而使您可以缩小或扩大距离计算，改变施加的力的大小。
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