/* built with Studio Sketchpad: 
 *   https://sketchpad.cc
 * 
 * observe the evolution of this sketch: 
 *   https://studio.sketchpad.cc/sp/pad/view/ro.fo93hwX2oLl/rev.133
 * 
 * authors: 
 *   Matt Perkins

 * license (unless otherwise specified): 
 *   creative commons attribution-share alike 3.0 license.
 *   https://creativecommons.org/licenses/by-sa/3.0/ 
 */ 



// Pressing Control-R will render this sketch.

int i = 0; 

void setup() {  // this is run once.   
    
    // set the background color
    background(255);
    
    // canvas size (Variable aren't evaluated. Integers only, please.)
    size(700, 700); 
      
    // smooth edges
    smooth();
    
    // limit the number of frames per second
    frameRate(30);
    
    // set the width of the line. 
    strokeWeight(12);
} 

void draw() {  // this is run repeatedly.  

    // set the color
    int r = i;
    int g = random(255);
    int b = random(255); 
    stroke(r, g, b, 1);
    fill(r, g, b, 1);
    
    // draw the line
    quad(i, 0, width, random(height), random(width),height, 0, i);
    
    // move over a pixel
    if (i < width) {
        i++;
    } else {
        i = 0; 
    }
}