/**
 * painting02
 *
 * soft colors with "discretization"
 *
 * Matthew Conroy (www.madandmoonly.com)
 *
 **/
  
PImage canvas1;

void setup (){
  size(800, 600);
  canvas1 = createImage(800,600,RGB);
  noLoop();
}

void draw(){
  int points=3+int(10*mouseX/canvas1.width);
  
  int [] xCoords = new int[points];
  int [] yCoords = new int[points];

  int [] redColors = new int[points];
  int [] greenColors= new int[points];
  int [] blueColors = new int[points];

    for (int i=0; i<points; ++i) {
      xCoords[i]= int(canvas1.width*random(1));
      yCoords[i]= int(canvas1.height*random(1));
      redColors[i] = int(random(255));
      greenColors[i] = int(random(255));
      blueColors[i]=int(random(255));
  }

  int disThresh=int(20000+200000*mouseY/canvas1.height);
  
for (int y = 0; y < canvas1.height; y++) { 
  for (int x = 0; x < canvas1.width; x++) {
  int red1=0,green1=0,blue1=0;
  float val=0;
  float [] distances = new float[points];
  float sumD=0.0;
  float redSum=0, greenSum=0, blueSum=0;

  for (int i=0; i<points; ++i) {
    distances[i] = ((xCoords[i]-x)*(xCoords[i]-x) + (yCoords[i]-y)*(yCoords[i]-y));
    if (distances[i]>disThresh) {
      distances[i]= disThresh*int(distances[i]/disThresh);
    }
    redSum=redColors[i]*distances[i]+redSum;
    greenSum=greenColors[i]*distances[i]+greenSum;
    blueSum=blueColors[i]*distances[i]+blueSum;
    sumD=sumD+distances[i];
  } 
  int red0=int(redSum/sumD);
  int green0=int(greenSum/sumD);
  int blue0=int(blueSum/sumD);    
  int valint=int(val);
  int pos = y*canvas1.width+x;
  canvas1.pixels[pos]= color(red0,green0,blue0);   
  }  
  

  
}  

  
canvas1.updatePixels();
image(canvas1, 0, 0); // Draw the new image
}

void mousePressed() 
{
  redraw();
}