Getting the mouse worldspace position under the mouse?

[Thaumaturge]

@serega-kkz

If you don’t want to represent the plane as an 3d object, you can use this.

If I recall correctly, there’s an easier means of getting a line-plane intersection in Panda:

See here:

Super-fast mouse ray collisions with ground plane

I was shocked to learn that many users do not know about the existence of many useful mathematical classes and functions that Panda provides. Thus, many users use Panda’s collision system if they want to detect where a mouse ray hit a ground plane (for point-n-click movement in a 2d world) etc etc. Thus, I quickly threw this snippet together that shows how to use the Plane class to calculate the intersection point with a mouse line. Super-fast. (Note that there are many more uses to this.) fro…

@WhereIsTheLove

I don’t mean selecting a given object, I mean the exact world space position beneath the mouse.

Did you ever get that ray-casting approach working? If so, then what was lacking there? Perhaps we can improve upon it!

If you didn’t, then how far did you get?

My feeling is that ray-casting is likely to be the most straightforward means of doing this, and that it should be pretty precise. After all, it should do exactly what you seem to be describing: find the nearest surface-point under the mouse.