旋转的参数是由特定轴上鼠标位置确定的。
The parameter for the rotation is determined from the mouse for the particular axis.
只有鼠标位置非常的麻烦,其他的都比较简单了。
Only finding the mouse position, is very hard, accessing other bits of information is simpler.
鼠标位置和按钮信息将以清单7中所示的形式输出。
Mouse position and button information is printed out in the format shown in Listing 7.
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