OpenGL Question

This is a discussion on OpenGL Question within the C++ Programming forums, part of the General Programming Boards category; How do you create a terrain in opengl ?...

  1. #1
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    OpenGL Question

    How do you create a terrain in opengl ?

  2. #2
    Veni Vidi Vice
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    With all respect try the game forum.

  3. #3
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    OpenGL is an API for drawing graphics to the screen. Those graphics are represented by the variables in code you have behind the scenes. So you have to mke the terrain in C / C++ coded, OpenGL just draws it.

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    lol Eber i know what opengl is and know some of opengl code but i want to know the code for a simple flat terrain. Could i use a textured quad ?

  5. #5
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    Quad or triangle , theres not a whole lot of choices, never use polygon in a serious project. And if you want wireframe terrain use a texture with a line around the edge, the glPolygonMode(GL_LINE) type thing is VERY slow.

    For my current terrain project I use two triangles in the form of a strip, and then use a linked list for a bucket sort to minimize calls to glBindTexture() (which is expensive as far as resources go).

    I am useing the Z axis as the terrain height, you can orient it any way you want, just so as you keep things uniform and keep in mind where the camera 'eye' is.

    For simple terrain you can create a 2d array that represents the terrain heights, then use a set of embedded for loops to draw each poly at connecting heights.
    Last edited by Eber Kain; 07-05-2002 at 08:49 PM.

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