hw1 helper

part 1

by tom0000p

HTML

<div id="info">hw1 demo
  <br>part 1</div>
<script src="http://cdnjs.cloudflare.com/ajax/libs/three.js/r70/three.min.js"></script>
<script src="https://dl.dropboxusercontent.com/u/3587259/Code/Threejs/OrbitControls.js">


</script>
<script src="http://jyunming-chen.github.io/tutsplus/js/KeyboardState.js"></script>

CSS

#info {
  position: absolute;
  top: 0px;
  width: 100%;
  padding: 10px;
  text-align: center;
  color: #ffff00
}

body {
  overflow: hidden;
}

JavaScript

var camera, scene, renderer, controls;
var keyboard = new KeyboardState();

init();
animate();

function init() {
  scene = new THREE.Scene();

  camera = new THREE.PerspectiveCamera(50, window.innerWidth / window.innerHeight, 1, 1000);
  camera.position.z = 500;
  scene.add(camera);

  var gridXZ = new THREE.GridHelper(100, 10);
  gridXZ.setColors(new THREE.Color(0xff0000), new THREE.Color(0xffffff));
  scene.add(gridXZ);

  renderer = new THREE.WebGLRenderer();
  renderer.setSize(window.innerWidth, window.innerHeight);
  renderer.setClearColor(0x888888);

  controls = new THREE.OrbitControls(camera, renderer.domElement);

  document.body.appendChild(renderer.domElement);
  ////////////////////////////////////////////////////////////////
	var geometry = new THREE.Geometry();
  // add vertices
  geometry.vertices.push (new THREE.Vector3(0,0,-10));
  geometry.vertices.push (new THREE.Vector3(30,0,0));
  geometry.vertices.push (new THREE.Vector3(0,10,0));
  
  // add faces
  geometry.faces.push (new THREE.Face3(0,1,2));

	// build necessary information
  geometry.computeBoundingSphere();
  geometry.computeFaceNormals();
  geometry.computeVertexNormals();
  
	var mesh = new THREE.Mesh (geometry, new THREE.MeshNormalMaterial({side: THREE.DoubleSide}));
  //scene.add (mesh);
  
  var meshL = mesh.clone();
  meshL.position.z = -5;
  var meshR = mesh.clone();
  meshR.position.z = 5;
  
  meshR.geometry.vertices[0].z = 10;
  meshR.geometry.verticesNeedUpdate = true; 
  


  var boat = new THREE.Object3D();
  boat.add (meshL);
  boat.add (meshR);
  scene.add (boat);
}

function animate() {
  controls.update();

  requestAnimationFrame(animate);
  render();
}

function render() {
  renderer.render(scene, camera);
}