rotation3D 2

axis angle

by jason870509

HTML

<div id="info">Orientation 3D
  <br/>axis angle</div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/three.js/109/three.min.js"></script>
<script src="https://threejs.org/examples/js/controls/OrbitControls.js">


</script>
<script src="https://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, light, controls;
var plane;

init();
animate();

function buildMissile() {
	var missile = new THREE.Object3D();
  var normalMat = new THREE.MeshNormalMaterial();
	var tip = new THREE.Mesh (new THREE.CylinderGeometry (0,5,10,20), normalMat);
  missile.add (tip);
  tip.position.y = 15;
  var body = new THREE.Mesh (new THREE.CylinderGeometry (5,5,10,20), normalMat);
  missile.add (body);
  body.position.y = 5;
  
  var missileFrame = new THREE.Object3D();
  missileFrame.add (missile);
  missile.rotation.z = -Math.PI/2;

  var axis0 = new THREE.Mesh (new THREE.CylinderGeometry (1,1,30), new THREE.MeshBasicMaterial({color:0xff0000}));
  var axis1 = new THREE.Mesh (new THREE.CylinderGeometry (1,1,30), new THREE.MeshBasicMaterial({color:0x00ff00}))
  var axis2 = new THREE.Mesh (new THREE.CylinderGeometry (1,1,30), new THREE.MeshBasicMaterial({color:0x0000ff}));
  missileFrame.add (axis0);
  missileFrame.add (axis1);
  missileFrame.add (axis2);

	axis0.position.set (15,0,0);
  axis0.rotation.z = - Math.PI/2;
  axis1.position.set (0,15,0);
  axis2.position.set (0,0,15);
  axis2.rotation.x = Math.PI/2;

	return missileFrame;
}

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

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

  light = new THREE.PointLight(0xffffff);
  light.position.set(100, 300, 200);
  scene.add(light);

  var gridXZ = new THREE.GridHelper(200, 20, 'red', 'white');
  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);
  ////////////////////////////////////////////////////////////////////////

  missile = buildMissile();
  scene.add (missile);  
  
  // make the missile point to 'newDir' (world space)
  var newDir = new...