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  Trying 3d for the first time - How should I initGL()?  (Read 1861 times)
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Offline RylandAlmanza

Junior Devvie


Medals: 3



« Posted 2012-02-29 10:02:40 »

I made a simple cube, except it doesn't have a back. Or a right side. Or a left side. Or a bottom. Ok, it's not really a cube, but it has a front and top so that I can test depth! Anyways, I placed it so that the front is at position (0, 0, 0) but I can't see it, and I think it has to do with my initGL() function:
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protected void initGL() {
   int width = display_parent.getWidth();
   int height = display_parent.getHeight();
   GL11.glEnable(GL11.GL_TEXTURE_2D);'
             
        GL11.glClearColor(0.0f, 0.0f, 0.0f, 0.0f);          
       
        // enable alpha blending
        GL11.glEnable(GL11.GL_BLEND);
        GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);
       
        GL11.glViewport(0,0,width,height);
   GL11.glMatrixMode(GL11.GL_MODELVIEW);

   GL11.glMatrixMode(GL11.GL_PROJECTION);
   GL11.glLoadIdentity();
   GL11.glOrtho(0, width, 0, height, 0, height);
   GL11.glMatrixMode(GL11.GL_MODELVIEW);
}

Am I doing something wrong? It's 2:00 AM, so I probably am. Off to bed. Thanks in advance!
Offline cylab

JGO Wizard


Medals: 89



« Reply #1 - Posted 2012-02-29 10:17:51 »

your cube is probably clipped due to false far/near planes. Also having zero in the middle of the screen helps.
try:
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GL11.glOrtho( -width/2, width/2, -height/2, height/2, -height/2, height/2 )

for starters

Mathias - I Know What [you] Did Last Summer!
Offline RylandAlmanza

Junior Devvie


Medals: 3



« Reply #2 - Posted 2012-02-29 19:15:32 »

Thanks for the help. Shiny medal for you! I still can't see my cube though. Sad Here's the block class:
EDIT: Wait, it worked! Thanks a lot!
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