侧重位置与方向的改变 shift
敌人的位置与方向确定为开火点。
Position and orientation of the enemies to determine the source of fire.
旋 转尺能当作一个简易圆规使用，能根据需要画弧、画圆，同时能 确定两物体的位置与方向。
The rotary ruler can be used as simple compasses, can be used to draw arcs and circles according to demands, and can be used to define positions and directions of two articles simultaneously.
这样，只需生成与观众位置和目光方向有关的全息图即可，大大降低了所需运算量。
It is then necessary to generate only the parts of the hologram that are relevant to the viewer's position and direction of gaze, greatly reducing the amount of processing required.
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