//Justin Faria "Data Culture Assignment 2" 
//11/1/07
//  This is based off the basic loop program from the processing
//website. I've changed the lines to rectangles and the modified 
//the loop control so that it is controled by the duration per
//mouse click.
//  In short this program operates via a click principle, so that
//while either of the mouse buttons is being held down the 
//rectagles move. Once the mouse button is released they stop.
//  I have replaced the standard dark grey background with an
//array which to make it a little more interesting. However the 
//array slows the framerate somewhat, however to compensate you
//can control the timing. Comments on the the coding are found
//under the the section of code.

float[][] distances;
float maxDistance;
// distance measure for the background array

void setup() {
  size (400, 400);
  stroke (255);
  noLoop();
  frameRate(90);
}

float y = 400;
//setting the basic perameters for the program objects

void draw()
{
  background(0);
  
  maxDistance = dist(width/2, height/2, width, height);
distances = new float[width][height];
for(int i=0; i<height; i++) {
  for(int j=0; j<width; j++) {
    float dist = dist(width/2, height/2, j, i);
    distances[j][i] = dist/maxDistance * 255; 
  }
}
// the background array perameters

for(int i=0; i<height; i+=2) {
  for(int j=0; j<width; j+=2) {
    stroke(distances[j][i]);
    point(j, i);
  }
}

  rect (0, y, 60, y);
  rect (100, y, 60, y);
  rect (200, y, 60, y);
  rect (300, y, 60, y);
  
  y = y - 1; 
  if (y < 0) { 
    y = height; 
  }  
} 
// series of objects and thier controls

void mousePressed()
{
  loop();
}

void mouseReleased()
{
  noLoop();
}
//the timeing control