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Objects disappear (Read 480 times)
Superstef
Objects disappear
Feb 23rd, 2008, 7:53pm  
Hello,

import processing.opengl.*;
import javax.media.opengl.*;
int z=0;
void setup(){
 frameRate(20);
 size(500,200,OPENGL);
};
 
void draw() {
  background(0);
 pushMatrix();
   
   translate(width/2,height/2,z-=10);
   fill(255,255,255,255);
   ellipse(0,0,200,200);
 
  popMatrix();
  println(z);
}


In the OPENGL Mode all Objects < -1560 disappear. In the P3D everthing works correctly.
Does anybody know why?
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antiplastik
Re: Objects disappear
Reply #1 - Feb 24th, 2008, 10:55pm  
Looks like a clipping plane problem.

Have a try with properly setting the near and far values with the frustum method :
http://processing.org/reference/frustum_.html

For example :
Code:
frustum(-width/2, width/2, -height/2, height/2, -100, 200);
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Superstef
Re: Objects disappear
Reply #2 - Feb 25th, 2008, 10:00am  
Works! Thx for the tip.
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