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Index › Programming Questions & Help › OpenGL and 3D Libraries › fill / texture question...
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fill / texture question... (Read 785 times)
amb
fill / texture question...
Feb 6th, 2006, 10:33pm  
Hi All:
i'm a stuck newbie...trying to create "half a cube" using the beginShape() / endShape(), but two of my sides aren't filling.
any/all help appreciated!
code is pasted below
THANXS,
amb

=========================================================
float ang = 0;
void setup(){
   size(800,800,P3D);
   framerate(22);
} // end method setup...
void draw() {
 background(100);
 translate(width/2,height/2,0);
 rotateX(radians(ang-=PI/2.0));
 rotateY(radians(ang));
 beginShape();
   fill(255,0,0);  // mr. red...
   vertex(0,0,0);
   vertex(100,0,0);
   vertex(100,0,100);
   vertex(0,0,100);
 endShape();
 beginShape();  // mr. green...
   fill(0,255,0);
   vertex(0,0,0);
   vertex(100,0,0);
   vertex(100,100,0);
   vertex(0,100,0);
 endShape();
 beginShape();  // mr. blue...
   fill(0,0,255);
   vertex(0,0,0);
   vertex(0,100,0);
   vertex(0,100,100);
   vertex(0,0,100);
 endShape();
} // end method draw...
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JohnG
Re: fill / texture question...
Reply #1 - Feb 7th, 2006, 12:52pm  
If you explicitly say what type of shape you're trying to draw, it works.

e.g.:
Code:
 float ang = 0;
void setup(){
    size(800,800,P3D);
    framerate(22);
} // end method setup...
void draw() {
  background(100);
  translate(width/2,height/2,0);
  rotateX(radians(ang-=PI/2.0));
  rotateY(radians(ang));
  beginShape(QUADS);  
    fill(255,1,0);  // mr. red...
    vertex(0,0,0);
    vertex(100,0,0);
    vertex(100,0,100);
    vertex(0,0,100);
  endShape();
  beginShape(QUADS);  // mr. green...
    fill(0,255,0);
    vertex(0,0,0);
    vertex(100,0,0);
    vertex(100,100,0);
    vertex(0,100,0);
  endShape();
  beginShape(QUADS);  // mr. blue...
    fill(0,1,255);
    vertex(0,0,0);
    vertex(0,100,0);
    vertex(0,100,100);
    vertex(0,0,100);
  endShape();
} // end method draw...


You can even get rid of 2 of the begin/endShape calls:
Code:
  beginShape(QUADS);  
    fill(255,1,0);  // mr. red...
    vertex(0,0,0);
    vertex(100,0,0);
    vertex(100,0,100);
    vertex(0,0,100);
    fill(0,255,0);
    vertex(0,0,0);
    vertex(100,0,0);
    vertex(100,100,0);
    vertex(0,100,0);
    fill(0,1,255);
    vertex(0,0,0);
    vertex(0,100,0);
    vertex(0,100,100);
    vertex(0,0,100);
  endShape();
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amb
Re: fill / texture question...
Reply #2 - Feb 7th, 2006, 3:35pm  
cool, thanks!
amb
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