/* built with Studio Sketchpad: 
 *   https://sketchpad.cc
 * 
 * observe the evolution of this sketch: 
 *   https://studio.sketchpad.cc/sp/pad/view/ro.$N11oui$Yyj/rev.815
 * 
 * authors: 
 *   Eric Fickes

 * 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, maxI = 0; 

float radius, xx, yy, startX, startY, centerX, centerY;
float angle = 0;
float alf = 50;

///////////////////////////////////////////////////////////////////////////
//    
void setup() {  // this is run once.   
    
    // set the background color
    background(255);
    
    // canvas size (Variable aren't evaluated. Integers only, please.)
    size(666, 666);
      
    // smooth edges
    smooth();
    noFill();
    
    centerX = width/2;
    centerY = height/2;
    
    // set the width of the line. 
    strokeWeight(1);

    maxI = width+height;
    startX = centerX;
    startY = centerY;
    radius = floor(alf/2);
} 

///////////////////////////////////////////////////////////////////////////
//    
void draw() {  // this is run repeatedly.  
    xx = startX - int( cos(radians(angle)) * radius );
    yy = startY - int( sin(radians(angle)) * radius );

    noFill();

    if( i % alf == 0 ) {
        strokeWeight( alf );
        stroke(255, 222);
        point( xx, yy );
        
        strokeWeight( alf );
        stroke(#EF0000, 150);
    } else {
        noFill();
        strokeWeight( random(.5, 1.1) );
        stroke(0, alf );
    }

    ellipse( xx, yy, radius, radius );
  
    angle += alf;

    i++;
    
    if( i > maxI ) {

        text("DONE SON!", width - 100, height - 20 );
        noLoop();
    }
    
    if( i % alf == 0 ) {
        radius += alf;//*.75;
    }
}