Home » Discussion forums » OpenTK » Support
samssonart's picture

Screen coordinates to Object coordinates without gluUnProject

Posted Tuesday, 1 May, 2012 - 20:56 by samssonart in

I've been looking the forums and checked online tutorials, I want to know how can I convert screen coordinates to object coordinates, so I can draw objects using the mouse. I've seen many solutions to this, but all of them use the Glu.unproject function, which appears to be deprecated. So I want to know if anyone knows of another way to do this that won't rely on deprecated code.

‹ VBO (on Windows) vs (on Ubuntu) [Solved Mostly]Can't read joystick properly ›

Comments

Comment viewing options

Select your preferred way to display the comments and click "Save settings" to activate your changes.
avc81's picture

Re: Screen coordinates to Object coordinates without ...

Posted Wednesday, 2 May, 2012 - 07:03 by avc81

http://www.opentk.com/node/1276

samssonart's picture

Re: Screen coordinates to Object coordinates without ...

Posted Tuesday, 8 May, 2012 - 18:03 by samssonart

Thanks, I had seen that post already, what I meant is that the results that get out of gluUnProject are not reliable when using perspective projection, or maybe I just don't know how to properly use it, but results are weird. I want to know if anyone knows of another way to do screen-to-world-coordinates convertions.

XZibit's picture

Re: Screen coordinates to Object coordinates without ...

Posted Wednesday, 9 May, 2012 - 20:08 by XZibit

In Fact you have to project your point as Vector through your current Matrices (Modelview & Projection) by using
Vector_Projection. This isnt anything else than UnProject do!