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opengl rotating and zooming

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  • 13-12-2006 6:36pm
    #1
    jimijehova
    Closed Accounts Posts: 4 ✭


    i have a game written in c++ using openGL and am hoping someone can input zoom using the keyboard arrows and rotating using the mouse. will email code to whoever fells they are up to the challenge.


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    #2
    Giblet
    Registered Users Posts: 11,980 ✭✭✭✭Giblet


    I'd suggest you learn more about the world and view matrix and how to get them before starting with rotations.


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    #3
    aidan_walsh
    Closed Accounts Posts: 17,208 ✭✭✭✭aidan_walsh


    Is this a game you've written yourself, or something someone else has done? Just trying to get a feel for what you're expecting of any volunteers here...


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    #4
    jimijehova
    Closed Accounts Posts: 4 ✭jimijehova


    Hi aidan, this is a game that was given to me and i have changed various parts but cannot seem to get the rotating of the screen object to work.


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    #5
    PhantomBeaker
    Registered Users Posts: 304 ✭✭PhantomBeaker


    I'd also suggest learning more about the various matrices and transformations, because what you want to do here is fairly trivial.

    http://nehe.gamedev.net/ have a few tutorials that should explain a lot about opengl - you probably don't have to go through the setup of the programs to draw this stuff, because you probably have some sort of framework in place (i.e. GUT the game of all its innards and work from there), but it'll explain the basics.

    I'd also suggest that you try just rotating without any mouse control. Like set up a little loop that draws a scene and rotates it a little bit, and then sleeps... and then repeats.

    Once you get the hang of it, you can feed it back into the game you're working on.

    Edit: Also, if you're really getting serious about Opengl, you probably want the Blue book and the Red Book for reference (links were snarfed from Opengl.org - another good site on that stuff)

    Hope that helps,
    Aoife


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