hw5-3-1

d-drive on slope

by jmchen

HTML

<div id="info">D-Drive on Slope<br>
	Home to start, Space to stop<br>
	Left/Right to turn <br>
	Up/Down to accelerate/decelerate
</div>
<script src="https://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="https://jyunming-chen.github.io/tutsplus/js/KeyboardState.js"></script>

CSS

#info {
  position: absolute;
  top: 2%;
  width: 100%;
  padding: 10px;
  text-align: center;
  color: #ffff00
}

body {
  overflow: hidden;
}

JavaScript

var tiltAngle = Math.PI/6;

var clock = new THREE.Clock();
var scene, renderer, camera;
var controls, keyboard = new KeyboardState();
var car;
var raycaster = new THREE.Raycaster();
var normalFlat = new THREE.Vector3(0,1,0);
var normalSlope = normalFlat.clone().applyAxisAngle (new THREE.Vector3(0,0,1), tiltAngle);
var normalNow = new THREE.Vector3();

// state variables of toycar
var pos = new THREE.Vector3(-50,0,0);
var vel = new THREE.Vector3(0,0,0);
var heading = new THREE.Vector3(1,0,0);
var force = new THREE.Vector3();
var power = 0;

window.onload = function() {
	init();
	animate();
}

window.onresize = function () {
	camera.aspect = window.innerWidth / window.innerHeight;
	camera.updateProjectionMatrix();
	renderer.setSize (window.innerWidth, window.innerHeight);
}

function buildCar() {
  var geometry = new THREE.Geometry();
  geometry.vertices.push(
    new THREE.Vector3(8, 0, 0),
    new THREE.Vector3(-8, 0, -6),
    new THREE.Vector3(-8, 0, 6)
  );

  var face = new THREE.Face3(0, 1, 2);
  face.materialIndex = 0;
  geometry.faces.push(face);

  geometry.computeBoundingSphere();
  geometry.computeFaceNormals();
  geometry.computeVertexNormals();

  return new THREE.Mesh(geometry, new THREE.MeshBasicMaterial({color:0xffff12, side:THREE.DoubleSide}));
}

function init()
{
	var width = window.innerWidth;
	var height = window.innerHeight;

	renderer = new THREE.WebGLRenderer({antialias: true});
	renderer.setSize (width, height);
	renderer.setClearColor (0x888888);
	document.body.appendChild (renderer.domElement);

	scene = new THREE.Scene();

	camera = new THREE.PerspectiveCamera (45, width/height, 1, 10000);
	camera.position.y = 160;
	camera.position.z = 400;
	camera.lookAt (new THREE.Vector3(0,0,0));
	scene.add (camera);

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

	var axes = new THREE.AxisHelper(50);
	scene.add(axes);
  
	plane0 = new THREE.Mesh (new THREE.PlaneGeometry (200,200,4,4), new...