/* built with Studio Sketchpad: 
 *   https://sketchpad.cc
 * 
 * observe the evolution of this sketch: 
 *   https://studio.sketchpad.cc/sp/pad/view/ro.oXWsk$MAJNi/rev.12
 * 
 * authors: 
 *   Scott Smith

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




boolean clockwise = true;
int a;
void setup() {      
    background(255);   
    size(300, 300);      
    smooth();    
    frameRate(30);
    
    strokeWeight(12);
    PFont fontA = loadFont("Arial");
    textFont(fontA, 12);
} 

void draw() {  
    rectMode(CENTER);
    rect(width/2, width/2, 56, 56);
    
    fill(0);  
    text("reverse", 130, 155);
    
    if (clockwise) {
        a = 1;
        }
        else {
           a  = -1;
            }
    
    stroke(abs(255*sin(millis()/543)),
    abs(100*sin(millis()/767)),
    abs(255*sin(millis()/1000)), millis()/10);
    
    fill(abs(255*sin(millis()/543)),
    abs(100*sin(millis()/767)),
    abs(100*sin(millis()/1000)), sin(millis())/10);
    
    ellipse(0.5*width + 100*cos(a*millis()/500),
    0.5*width + 100*sin(a*millis()/500),
    abs(100*sin(millis()/237)),
    abs(100*sin(millis()/237)));    
}
void mouseClicked() {
    if ( mouseX > 122 && mouseX < 178 && mouseY > 122 && mouseY < 178 ) {    
    clockwise = !clockwise; 
    }   
        }