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Add External Stylesheets/Pens

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Use npm Packages

We can make npm packages available for you to use in your JavaScript. We use webpack to prepare them and make them available to import. We'll also process your JavaScript with Babel.

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HTML Settings

Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

              <!DOCTYPE html>

  <link rel="stylesheet" href="style.css" />

  <div class="wrapper">
    <div class="slideContainer">
      <input type="range" min="1" max="800" value="50" class="slider" id="myRange">
    <canvas id="canvas"></canvas>

              body {
  background-color: lightgray;
  display: flex;
  justify-content: center;
  align-items: center;
.slideContainer {
  position: fixed;
  right: 30px;
  top: 30px;
  background-color: lightblue;
  z-index: 20;
canvas {
  border: 1px dotted red;
  padding: 80px;
  background-color: lightgray;
  transform: scale(0.5);
              var canvas = document.querySelector("canvas");

canvas.width = window.innerWidth;
canvas.height = window.innerHeight;

canvas.width = 1600;
canvas.height = 800;

var ctx = canvas.getContext("2d");

// 1. Make a center point
// 2. Draw lines jutting from center
// 3. Draw a line parallel to canvas bottom
// 4. Draw an adjoining item upward

// x, y
// right, down

// Nomenclature
// x0a
// coordinate type, vanishingPt#, endPtName

// Vanishing point 0
var x0 = 400;
var y0 = 400;

// Vanishing point end 0a
var x0a = 0;
var y0a = 2 * y0;

// Vanishing point end 0b
var x0b = 2 * x0;
var y0b = 2 * y0;

// Define delta
var delta = 700;

function init() {
  console.log(delta, "delta");
  console.log(x0b, "x0b");
  console.log(y0b, "y0b");
  console.log(x0, "x0");
  console.log(y0, "y0");
  // First Line
  ctx.moveTo(x0, y0);
  ctx.lineTo(x0a, y0a);
  ctx.strokeStyle = 'red';

  // Second Line
  ctx.moveTo(x0, y0);
  ctx.lineTo(x0b, x0b);
  ctx.strokeStyle = 'green';

  // // House based on second Line
  ctx.moveTo(x0b, y0b); // starting point
  ctx.lineTo(x0b + delta, y0b); // right x+100
  ctx.lineTo(x0b + delta, y0b - delta); // up y-100
  ctx.lineTo(x0b, y0b - delta); // left x-100
  ctx.lineTo(x0b, y0b); // down y+100
  ctx.lineTo(x0b, y0b - delta); // back up y-100
  ctx.lineTo(x0, y0);
  ctx.lineTo(x0b + delta, y0b - delta);
  ctx.strokeStyle = 'blue';


var slider = document.getElementById("myRange");

slider.oninput = function () {
  ctx.clearRect(0, 0, canvas.width, canvas.height); // add this line
  delta = +this.value;
  requestAnimationFrame(init()); // redraw everything
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