topical media & game development
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graphic-processing-site-examples-Basics-Form-TriangleStrip-TriangleStrip.pde / pde
TRIANGLE_STRIP Mode by Ira Greenberg. Generate a closed ring using vertex() function and beginShape(TRIANGLE_STRIP) mode. outerRad and innerRad variables control ring's outer/inner radii respectively. Trig functions generate ring. 

  
  
  size(200, 200);
  background(204);
  smooth();
  
  int x = width/2;
  int y = height/2;
  int outerRad = 80;
  int innerRad = 50;
  float px = 0, py = 0, angle = 0;
  float pts = 36;
  float rot = 360.0/pts;
  
  beginShape(TRIANGLE_STRIP); 
  for (int i = 0; i < pts; i++) {
    px = x + cos(radians(angle))*outerRad;
    py = y + sin(radians(angle))*outerRad;
    angle += rot;
    vertex(px, py);
    px = x + cos(radians(angle))*innerRad;
    py = y + sin(radians(angle))*innerRad;
    vertex(px, py); 
    angle += rot;
  }
  endShape();
[] readme course(s) preface I 1 2 II 3 4 III 5 6 7 IV 8 9 10 V 11 12 afterthought(s) appendix reference(s) example(s) resource(s) _

(C) Æliens 20/2/2008

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