/* built with Studio Sketchpad: 
 *   https://sketchpad.cc
 * 
 * observe the evolution of this sketch: 
 *   https://studio.sketchpad.cc/sp/pad/view/ro.mp81fAGjzGN/rev.293
 * 
 * authors: 
 *   alexsmith540

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



//I got inspired at LACMA by some crosshatching the other day and though how cool it might be to start doing riffraffery with crosshatching...

float p;
float inp;
float ellr = 100;
float fooninja;

void setup() {  // this is run once.   
    
    // set the background color
    background(255);
    fooninja = 3;
    // canvas size (Variable aren't evaluated. Integers only, please.)
    size(400,400); 
    inp = 0;  
    // smooth edges
    smooth();
    
    // limit the number of frames per second
    frameRate(30);
    
    // set the width of the line. 
    strokeWeight(1);
} 

void draw() {  // this is run repeatedly.  
inp+= 0.1;
p=sin(inp)*5.0;
background(255);
translate(width/2,height/2);
beginShape();
noFill();
curveTightness(p);
for(int i=0;i<360;i+=fooninja){
    float x = sin(i)*ellr;
    float y = cos(i)*ellr;
    curveVertex(x,y);
    }
endShape();
}
void mouseDragged(){
    fooninja = map(mouseY,0,height,2,3);
    }