* Sketch: DPMShutter_001_p5js

 * Parent Sketch: none

 * Type: dynamic

 *

 * Summary : Repeating lines on a circle. 

 *

 * GIT:

 * Author: Ferdinand Sorg

 * https://openrndr.org/

 * https://dpmanual.bitbucket.io

 * https://designingprograms.bitbucket.io

 */

​

let sw = 1;

​

function setup() {

createCanvas(500, 500);

  noFill();

  stroke(255);

}

​

function draw() {

    background(0);   

  let num = map(mouseX, 0, width*2, 0, 500);

  let size = map(mouseY, 0, height, 0, 250);

  strokeWeight(sw);

  translate(width/2, height/2);

  for (let i = 0; i< num; i++) {

   let degree = map(i, 0.0, num, 0.0, 360.0);

   push();

   translate(0, 0);

    rotate(radians(degree));

    line(0, size, width/1.0, size);

    pop();

  }

}

​

/////////////////////////// FUNCTIONS ////////////////////////////

​

function keyPressed() {

    if (key == '+') sw++;

    if (key == '-') {

      if (sw>0)

        sw--;

    }

​

}