Obtain information on clicking on or hovering over a pointcloud or mesh

[ac5113]

Is there any way to obtain the vertex coordinates(s) or vertex ids that are clicked on/hovered in a generated pointcloud or mesh?

[zhuyinheng]

checkout this demo. its basically unproject clicked pixel to world point in callback function.

Open3D/examples/python/visualization/mouse_and_point_coord.py

Line 86 in c096cb2

def _on_mouse_widget3d(self, event):