施加的力,旨在减缓与该特效器接触的任何 Collider2D 的线性运动。
线性阻力能够减缓与该特效器接触的 Collider2D。增加线性阻力可模拟越来越粘稠的流体,从而使碰撞体更难以行进。
这类似于 ::Rigidbody2D::Drag,但更复杂,因为施加的阻力不仅是速度的函数,而且还要考虑 Collider2D 被淹没的区域。该阻力被施加到淹没区域的中心,因此可产生扭矩,即,使该对象旋转。
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