let cols, rows;

let w = 45;

let flying = 0;

let t = 0;

let t2 = 10000;

​

function setup() {

  createCanvas(windowWidth, windowHeight, WEBGL);

  cols = floor(width / w);

  rows = floor(height / w);

  terrain = new Terrain(cols, rows);

​

  // Set the camera position and orientation

  let camX = width/3;

  let camY = height / 2; // Adjust this value for the desired side view

  let camZ = (height / 2) / tan(PI / 5); // Adjust this value for the desired zoom

  camera(camX, camY, camZ, 0, 0, 0, 0, 1, 0);

}

​

function draw() {

  background(255);

​

  // Center the sketch on the canvas

  translate(-width / 2, -height / 2);

​

  terrain.update();

  terrain.display();

  flying -= 0.01;

​

  for(let i=0; i<30; i++){

    line(x1(t+i), y1(t+i),x2(t+i), y2(t+i));

    point(x1(t+i), y1(t+i));

    point(x2(t+i), y2(t+i));

    // line(x3(t+i), y3(t+i),x4(t+i), y4(t+i));

    // point(x3(t+i), y3(t+i));

    // point(x4(t+i), y4(t+i));

    t+=0.005;

  }

}

​

class Terrain {

  constructor(cols, rows) {

    this.cols = cols;

    this.rows = rows;

    this.w = w;

    this.terrain = [];

  }

​

  update() {

    let yoff = flying;

    for (let y = 0; y < this.rows; y++) {

      let xoff = 0;

      this.terrain[y] = [];

      for (let x = 0; x < this.cols; x++) {

        this.terrain[y][x] = map(noise(xoff, yoff), 0, 1, -200, 200);

        xoff += 0.3;

      }

      yoff += 0.3;

    }

  }

​

  display() {

    stroke(0);

    noFill();

​

    for (let y = 0; y < this.rows - 1; y++) {

      beginShape(TRIANGLE_STRIP);

      for (let x = 0; x < this.cols; x++) {

        vertex(x * this.w, y * this.w, this.terrain[y][x]);

        vertex(x * this.w, (y + 1) * this.w, this.terrain[y + 1][x]);

      }

      endShape();

    }

  }

}

​

function x1(t){

  return sin(-t/10)*100 + cos(-t/5)*200;

}

function y1(t){

  return cos(-t/10)*1000;

}

function x2(t){

  return sin(-t/10)*2000 + cos(t)*20;

}

function y2(t){

  return cos(t/12)*20;

}

​

​

function x3(t2){

  return sin(t2/10)*100 + cos(t2/5)*200;

}

function y3(t2){

  return cos(t2/10)*1000;

}

function x4(t){

  return sin(t2/10)*2000 + cos(-t2)*20;

}

function y4(t2){

  return cos(-t2/12)*20;

}