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Thread: Rendering bitmaps

  1. #1
    Guest

    Rendering bitmaps

    Hi,

    Does anybody know how OpenGL converts real coordinates to pixels?

    I have some 3D models with points' coordinates lying in the cube -2.5 to 2.5 along each dimension (x,y,z) and I want to find the pixels of the bitmaps so that none of the models get off the bitmap!

    Thanks for any help

  2. #2
    Senior Member OpenGL Guru Relic's Avatar
    Join Date
    Apr 2000
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    2,450

    Re: Rendering bitmaps

    Answer is: yes!

    Check the utility function gluProject and read the OpenGL Programmer Guide (search for RedBook.pdf), Appendix F, Homogeneous Coordinates and Transformation Matrices

  3. #3
    Guest

    Re: Rendering bitmaps

    I have already downloaded the red book but, since being a beginner, I did not know where exactly to search. I think I will find it now.

    Thanks!

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