javascript
/
three.js
mirror of https://github.com/tazdij/three.js.git


			
				
					
						
						
							1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677
							<!-- Licensed under a BSD license. See license.html for license -->
<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=yes">
    <title>Three.js - Fundamentals 3 cubes</title>
  </head>
  <body>
    <canvas id="c"></canvas>
  </body>
<script src="resources/threejs/r93/three.min.js"></script>
<script src="resources/threejs-lessons-helper.js"></script> <!-- you can and should delete this script. it is only used on the site to help with errors -->
<script>
'use strict';

function main() {
  const canvas = document.querySelector('#c');
  const renderer = new THREE.WebGLRenderer({canvas: canvas});

  const fov = 75;
  const aspect = 2;  // the canvas default
  const zNear = 0.1;
  const zFar = 5;
  const camera = new THREE.PerspectiveCamera(fov, aspect, zNear, zFar);
  camera.position.z = 2;

  const scene = new THREE.Scene();

  const light = new THREE.DirectionalLight(0xffffff, 1);
  light.position.set(-1, 2, 4);
  scene.add(light);

  const boxWidth = 1;
  const boxHeight = 1;
  const boxDepth = 1;
  const geometry = new THREE.BoxGeometry(boxWidth, boxHeight, boxDepth);

  function makeInstance(geometry, color, x) {
    const material = new THREE.MeshPhongMaterial({color});

    const cube = new THREE.Mesh(geometry, material);
    scene.add(cube);

    cube.position.x = x;

    return cube;
  }

  const cubes = [
    makeInstance(geometry, 0x44aa88,  0),
    makeInstance(geometry, 0x8844aa, -2),
    makeInstance(geometry, 0xaa8844,  2),
  ];

  function render(time) {
    time *= 0.001;  // convert time to seconds

    cubes.forEach((cube, ndx) => {
      const speed = 1 + ndx * .1;
      const rot = time * speed;
      cube.rotation.x = rot;
      cube.rotation.y = rot;
    });

    renderer.render(scene, camera);

    requestAnimationFrame(render);
  }
  requestAnimationFrame(render);

}

main();
</script>
</html>