Hello,

I'm rather new to processing but (as any newbie ) found directly a bug.

I need to do some 3D modeling. If I plot a box which is much larger than the viewport I get a rendering error. This error is different in different situations so not 100 percent reproducible but nevertheless I can demonstrate it. Where is the problem?

This works:

1. void setup()
   {
     size(600,400,P3D);
     lights();
     smooth();
   
     camera(width/2+100,height/2-100,100,
            width/2,height/2,0,
            0,1,0);
           
     fill(150,0,0);
   }
   void draw()
   {
     background(255);
     float len = 1000.0*mouseX;
     translate(width/2,height/2-len/2,0);
     box(100,len,10);
   }
   

This doesnt work:

1. void setup()
   {
     size(600,400,P3D);
     lights();
     smooth();
   
     camera(width/2+100,height/2-100,100,
            width/2,height/2,0,
            0,1,0);
           
     fill(150,0,0);
    
     float len = 1000.0;
     translate(width/2,height/2-len/2,0);
     background(255);
     box(100,len,10);
   }