Assuming that both the objects and target positions are known in world coordinates, then billboarding becomes a simple geometrical operation.
假设物体和目标的世界坐标已知，那么广告牌技术将会是一个简单的几何操作。
Assuming that both the objects and target positions are known in world coordinates, then billboarding becomes a simple geometrical operation.
假设物体和目标的世界坐标已知，那么广告牌技术将会是一个简单的几何操作。
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