instantDrag for Maya脚本 (移动模型时沿目标模型移动)

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只需单击 Maya 中的命令按钮一次，即可在移动模型时沿目标模型移动

​InstantDrag allow user to simply click and drag mesh on another surface.
 

It can work in any situation. no mesh pre-select is required, once the tool is activated, just simply click and drag on any mesh which is on top of another surface.

hotKey for quick adjustment:

## hotKey :

## + Ctrl ----> rotate

## + Shift & Ctrl ----> scale

## + Shift ----> duplicate current mesh

## + Alt ----> snap to face center or vertex

## + Alt & Shilt ----> force center pivot and snap mesh to surface

let me know what you think, and happy to hear any suggestions to make the to