The end address of the instance Shared memory segment is not fixed.
实例共享内存的结束地址是不固定的。
Each of these shapes can either go on forever (a ray) or stop after a fixed distance (a segment), you can also pick based on a Bounds object.
各种形状都既可以行进到极远处(射线)或停止在固定的距离上(分段),你也可以基于一个边界对象做拣选。
The model of grass and tree is described as a set of connected branch segments. Each segment is assumed that one side is fixed and another is free.
草木模型由互相连接的离散段组成,每个离散段一端固定,一端自由。
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