/*
Devin Fairchild
October 09, 2009
Processing

This program is an attempt to create the 
illusion of water.  It is a crude abstract 
visualization at best, because water is 
incredibly difficult to replicate.  The 
illusion is created by moving ellipses along
sine or cosine waves to create gyrating 
movement similar to that of water.
*/

void setup() {
  size(640, 480);
  colorMode(RGB);
  
  
  
  
}

float wave = 0.0;                                                            //Used to manipulate the wavelength of the sine/cosine function

void draw() { 
  PImage img;                                                                //Setup for image parameters
      size (640, 480);
  background(0);
  for (int xMove = 0; xMove <= height; xMove += 10) {                        //For statement that will control the lateral movement of the sine/cosine waves; xMove for the x coordinate movement of the waves
    float sine = height/5 + (sin(wave) * height);                            //Parameters for the sine wave that will control the movement of the blue ellipses
    float cosine = height/5 + (cos(wave) * height);                          //Parameters for the cosine wave
    img= loadImage("water.jpg");                                             //Determines which image is loaded
    
    noStroke();
    fill(int (random(100,200)), int (random(100, 200)) ,255, 100);           //Random fill restricting to bluish colors
    ellipse(xMove,sine,200,50);                                              //A sine string of ellipses to create the illusion of movement
    fill(int (random(100,200)), int (random(100, 200)) ,255, 100);           //Random fill restricting to bluish colors
    ellipse(xMove,cosine,200,50);                                            //A cosine string of ellipses to create the illusion of movement
    //tint(150,150,150,200);
    //image(img, xMove, sine);
    //tint(150,150,150,200);
    //image(img, xMove, cosine);
    tint(150,150,150,150);                                                   //Creates a cosine string of tall ellipses to partiallly frame the other strings
    image(img, 0, 0);                                                        //Loads the image
    wave += PI/20.0;                                                         //Controls the wavelength of the sine/cosine waves
  }
}