HW5_2

by YouTingKuo

HTML

<div id="info">HW5_2
    <br/>
    <a>按住 left/right 移動 arm</a>
    <br/>
    <a>按住 up/dowm 移動 arm2</a>
</div>
<script src="//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://cdnjs.cloudflare.com/ajax/libs/numeric/1.2.6/numeric.min.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
}
a {
    color: white;
}

JavaScript

var camera, scene, renderer, light, controls, border;
var arm, arm2;
var pointGroup = new THREE.Object3D();
var avr = [], mCen = [], cov = [], localCoor = [], centroid = [], xy = [], 
		size = [], PC1 = [], PC2 = [], newCentroid = [];
var ev, xMax, xMin, yMax, yMin;
var p1=[], p2 = [], p3 = [], p4 = [];
var keyboard = new KeyboardState();
var angle = 0, angle2 = 0, l = 0, r = 0, u = 0, d = 0;;

init();
animate();

function init() {

  scene = new THREE.Scene();

  camera = new THREE.PerspectiveCamera(50, window.innerWidth / window.innerHeight, 1, 10000);
  camera.position.z = 100;
  scene.add(camera);

  arm = new THREE.Object3D();
  scene.add(arm);
  
  var mesh = new THREE.Mesh(new THREE.PlaneGeometry(20, 5),
    new THREE.MeshBasicMaterial());
  mesh.position.set(10, 0, 0);
  arm.add(mesh);

  arm2 = arm.clone();
  arm2.position.set(20, 0, 0);
  arm.add(arm2);

  //console.log(arm2);
	
  light = new THREE.PointLight(0xffffff);
  light.position.set(100, 300, 200);
  scene.add(light);
	
  /*
  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);
	
  window.addEventListener('keydown', onKeyDown, false);
	window.addEventListener ('keyup', onKeyUp, false);
}

function onKeyDown(event) {
		event.preventDefault();
    keyboard.update();
    if (keyboard.down("left")) {
  		l = 1;
  } else if (keyboard.down("right")) {
  		r = 1;
  } else if (keyboard.down("up")) {
  		u = 1;
  } else if (keyboard.down("down")) {
  		d = 1;
  }
}

function onKeyUp(event) {
		l = r = u = d = 0;
}

function updatePoint() {
		xy = [];
    for(var i = 0; i < 8; i++)
    		xy[i] = [];
    
    xy[0][0] = arm2.children[0].localToWorld(new...