* Sketch: DPMOsc_002

 * Parent Sketch: none

 * Type: dynamic

 *

 * Summary : Harmonic Motion 

 *

 * GIT:

 * Author: mark webster 2019

 * https://dpmanual.bitbucket.io

 * https://designingprograms.bitbucket.io

 */

​

let mode = 0;

let gridStep = 12;

let isCombine = false;

​

function setup() {

  let cnv = createCanvas(500, 500);

  noStroke();

}

​

function draw() {

    fill(0, 33);

    rect(0, 0, width, height);

    fill(255);

    let h = 0;

    let xOff = map(mouseX, 0, width, 0.015, 0.1);

    for (let x=0; x<width; x+=gridStep) {

      if(isCombine){

       h = sin( (x * xOff) + frameCount * 0.05) * 150; 

      }else {

        h = sin( x + frameCount * 0.05) * 150;

      }

      let y = sin( (x * xOff)  + frameCount * 0.025) * 50; 

      switch(mode) {

      case 0:

        rect(x, height/2 + y, gridStep, h);

        break;

      case 1:

        rect(width/2+y, x, h, gridStep);

        break;

      }

    }

}

​

function keyPressed() {

  if (key == '+') {

    mode++;

  }

  if (key == '-') {

    if (mode > 0) {

      mode--;

    }

  }

  if (key == 'l') {

    gridStep+=2;

  }

  if (key == 'm') {

    if (gridStep>2)

      gridStep-=2;

  }

  if(key == 'c'){

   isCombine = !isCombine; 

  }

}