I need papers: 2d screen coordinates to 3d coordinate

[compvis]

Hi,

Do you know the papers that describe the ­way to convert 2d screen coordinates to 3d coordinates ? These papers is purely mathematics, ( not DirectX, OpenGl or any engine else)

Please share me or point me to links, thank you so much !

[areay]

Hi there, here's the Ogre way of doing things.

I know you wanted a mathematical explanation but you should be able to deduce the formula easily from the example.

http://www.ogre3d.org/tikiwiki/Projecti ... e=Cookbook

[Dynamito]

Hi,

You can find it in Rayscenequery, and also the inverse (3D point to screen 2D coords) can be found in the sdkTray from the 1.7 demos.