var scl = 20;

var grid = [];

var t = 0

var flying = 0;

​

function setup() {

  createCanvas(windowWidth,windowHeight)

  cols = floor(1800 / scl);

  rows = floor(1800 / scl);

}

​

function draw() {

  background(0);

  stroke(255);

  noFill();

  // fill(255)

  flying -= 0.01;

  var yoff = flying;

  for (var y = 0; y < rows; y++) {

    var xoff = 0;

    grid[y] = []

    for (var x = 0; x < cols; x++) {

      grid[y][x] = map(noise(xoff, yoff), 0, 1, -50, 50);

      xoff += 0.1;

    }

    yoff += 0.1;

  }

  translate(width, height);

  translate(-width + scl, -height + scl);

  for (var a = 0; a < rows - 1; a++) {

    beginShape();

    for (var b = 0; b < cols; b++) {

      push()

      translate(b * scl, a * scl, grid[b][a]);

      rotate(t)

        line(0, 0, grid[b][a], grid[b][a]);

      //ellipse(0, 0, grid[x][y], grid[x][y]);

      pop()

        // curveVertex(x * scl, y * scl, grid[x][y]);

        // curveVertex(x * scl, (y + 1) * scl + grid[x][y]);

    }

    endShape();

  }

  t += 0.01

}