I am a french student and I need to pass 3D coordinates into 2D screen coordinates, please help me.
I am an italian student, and use gluProject (I assume you were asking for how to do it in OpenGL ).
- Get current viewing matrix, projection matrix, viewport dimension
- call gluProject passing x, y, z, and the matrices from point 1)
- read winx, winy, and winz(!)
The winz coord is used for clipping, I think (I couldn’t remeber precisely).
You should be interested in winx and winy.
This is the process as described in the red-book. Have a glance.
[This message has been edited by paolom (edited 03-10-2000).]
this is a handy tutorial for your prob