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Is there any way to picking 3D point without pressing shift?

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Is there any way to picking 3D point without pressing shift?

alanwsx
Hi,

I am building a tool for some 3D annotation tasks, and I want to overload the MouseEvent in PCLVisualizer to simulate the function of PointPickingEvent (without pressing shift). However, I have no idea how to do this. All I can do is to get the 2D point, yet it seems that there is no API for getting 3D point from 2D.

Is there any hint?

Thanks!
Shangxuan
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