kaleidoscope.pde

PShader kaleidoscope;
Rect[] rects; 
boolean applyFilter;
boolean PAUSE=false;

float bg = 255;
float fg = 0;
float span=0.25;
int nelems=9;
float xoff = 0.0;

color randomcolor() {
  color c=color(0,0,0);
  float r = random(1);
  if (r<0.333) c = color(255,0,0);
  else if (r<0.666) c = color(127,255,0);
  else if (r<0.999) c = color(0,0,255);
  return c;
}

void genRects() {
  rects=new Rect[nelems];
 
  for (int i=0; i<rects.length; i++) {
    rects[i]=
      new Rect(randomcolor(), 
      random(-span*width, span*width), random(-span*height, span*height), 
      random(100, 230), random(10, 230));
  }
}

void setup() {
  size(1000, 1000, OPENGL);
  smooth(8);
  frameRate(60);
 
  // get kaleidoscope.glsl here, and put in the sketch "data" folder:
  //http://pastebin.com/CWX1xCiR
  kaleidoscope=loadShader("kaleidoscope.glsl");
  kaleidoscope.set("sides", 6.0);
  kaleidoscope.set("offset", 1200);

  colorMode(RGB); //or HSB
  genRects();

  fill(fg,32);
}
 
void draw() {
  background(0);

  translate(width/2, height/2);
  rotateZ(radians(frameCount/2));

  translate(0, 0);
  
  for (Rect rect : rects) {
    rect.draw();
    }
  
  if (applyFilter) filter(kaleidoscope);
  
  if (frameCount %60 == 0) println(frameRate);
}
 
void mousePressed() {
  applyFilter=!applyFilter;
}

class Rect {
  color c;
  float x, y, w, h;
  int d;
  Rect(color cc, float xx, float yy, float ww, float hh) {
    c=cc;
    x=xx;
    y=yy;
    w=ww;
    h=hh;
    d=1;
  }

  void draw() {
    
    // fat colourful circles
    strokeWeight(4);
    stroke(fg);
    fill(c);

if (x<200) {
    rect(x,y,w,h);
} else {
   ellipse(x,y,w,w); 
}

  }
}

// screenshot organizer

void keyPressed(){
  if (key == ' ') {
    if (PAUSE) loop();
    else noLoop();
    PAUSE=!PAUSE;
  }
  if (key == 's' || key == 'S') {
    java.util.Date dNow = new java.util.Date( );
    java.text.SimpleDateFormat ft = new java.text.SimpleDateFormat ("yyyy_MM_dd_hhmmss_S");
    saveFrame("/home/linstead/Dropbox/screenshots/"+this.getClass().getName()+"/"+this.getClass().getName()+"_"+ft.format(dNow)+  ".png");
  }
  if (key == 'r' || key == 'R') {
    genRects();
  }
  
  if (key == 'c' || key == 'C') {
    for (Rect rect : rects) {
      rect.c = randomcolor();
      
    }
  }
}