https://lists.osgeo.org/pipermail/mapserver-users/2002-January/032876.html
[mapserver-users] Intercepting Map Click Coordinates with JavaScript ? Zooming with scale values.
click coordinatesmapserverusersjavascriptzooming
https://www.soft8soft.com/topic/how-to-obtain-mouse-click-coordinates/
How to obtain mouse click coordinates - Soft8Soft
How to use jigsaw puzzles in Verge3D to obtain the coordinates of mouse clicks, and then move the active camera to the position of mouse clicks
how tomouse clickobtaincoordinates