sinimage

var img;

function preload() {

  img = loadImage("84932.jpg");

}

function setup() {

  createCanvas(windowWidth, windowHeight);

  //image(img, 0, 0);

}

function draw() {

  //var sz = 50 + 20 * sin(frameCount * 0.06);

  var x = map(sin(frameCount * 0.001), -1, 1, 0, width);

  var y = map(sin(frameCount * 0.005), -1, 1, 0, height);

  var x2 = map(sin(frameCount * 0.003), -1, 1, 0, width);

  var y2 = map(sin(frameCount * 0.007), -1, 1, 0, height);

  // convert x and y from "screen size" to "image size"

  var imgx = map(x, 0, width, 0, img.width);

  var imgy = map(y, 0, height, 0, img.height);

  stroke(img.get(imgx, imgy)); // grab color from image

  line(x, y, x2, y2);

}