NeHe example

djohnson

Unregistered

Post: #1

Jan 30, 2004 — 11:56 AM

Ok, I am starting to learn OpenGL. I found NeHe's excellent examples but am having a problem. I have the code the setup a window and OpenGLView, but I dont want to go that route. I am working on a few game ideas, and want to try and keep them portable. When I run through the first example and try to setup a new project as they suggest, I get an error on the link. Here is what I have:

Code:

#include <OpenGL/gl.h>          // Header File For The OpenGL32 Library

#include <OpenGL/glu.h>         // Header File For The GLu32 Library

#include <GLUT/glut.h>          // Header File For The GLut Library

#define kWindowWidth    400

#define kWindowHeight   300

GLvoid InitGL(GLvoid);

GLvoid DrawGLScene(GLvoid);

GLvoid ReSizeGLScene(int Width, int Height);

int main(int argc, char** argv)

{

        glutInit(&argc, argv);

        glutInitDisplayMode (GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH);

        glutInitWindowSize (kWindowWidth, kWindowHeight);

        glutInitWindowPosition (100, 100);

        glutCreateWindow (argv[0]);

        InitGL();

        glutDisplayFunc(DrawGLScene);

        glutReshapeFunc(ReSizeGLScene);

        glutMainLoop();

        return 0;

}

Also I have link the following frameworks: Cocoa.framework, GLUT.framework, and OpenGL.framework. It will compile no problem, but when it links I get the following error:

Code:

/usr/bin/ld: Undefined symbols:

_DrawGLScene

_InitGL

_ReSizeGLScene

Now, what am I missing???

djohnson

Unregistered

Post: #2

Jan 30, 2004 — 12:20 PM

Ok, got it working. Forgot to add some other functions

Well it is a little slow... Maybe I should just use the Cocoa OpenGLView instead...

Sohta

Unregistered

Post: #3

Jan 30, 2004 — 12:31 PM

<Begin Shameless Plug>

See nehe's cocoa basecode ( on the left of the main page ). The Cocoa structure is kept to a minimum while the rest of the base is pure C++/OpenGL ( i.e. very easy to port ).

djohnson

Unregistered

Post: #4

Jan 30, 2004 — 01:42 PM

Yes I grabbed that right before heading to work today. I will use it until I make my own. Thanks!

Sohta

Unregistered

Post: #5

Jan 30, 2004 — 01:58 PM

np , I you have any problem with it, don't hesitate and tell me, I'll fix it right away.

I won't lie to you, it's just a little something I patched up quickly, so, it might be a little rough around the edges.

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