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synchronized-relative-movement.html
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synchronized-relative-movement.html
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<!DOCTYPE html>
<head>
<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
<title>Hello, world!</title>
<script src='js/keyboard.js'></script>
<!-- include three.js library -->
<script src='js/three.js'></script>
</head>
<body style='margin : 0px; overflow: hidden; font-family: Monospace;'>
<!--
Example created by Lee Stemkoski: https://github.com/stemkoski
-->
<script>
var scene, camera, renderer, clock, deltaTime, totalTime, keyboard;
var mover, secondMover, plane, secondPlane;
initialize();
animate();
function initialize()
{
scene = new THREE.Scene();
camera = new THREE.PerspectiveCamera( 70, window.innerWidth / window.innerHeight, 0.1, 1000 );
camera.position.set(0, 6, 8);
camera.lookAt( scene.position );
scene.add( camera );
let ambientLight = new THREE.AmbientLight( 0xcccccc, 1.00 );
scene.add( ambientLight );
// let pointLight = new THREE.PointLight();
// camera.add( pointLight );
renderer = new THREE.WebGLRenderer({
antialias : true,
alpha: false
});
renderer.setClearColor(new THREE.Color('lightgrey'), 0)
renderer.setSize( window.innerWidth, window.innerHeight );
renderer.domElement.style.position = 'absolute'
renderer.domElement.style.top = '0px'
renderer.domElement.style.left = '0px'
document.body.appendChild( renderer.domElement );
window.addEventListener( 'resize', onWindowResize, false );
clock = new THREE.Clock();
deltaTime = 0;
totalTime = 0;
keyboard = new Keyboard();
let loader = new THREE.TextureLoader();
// floor
let floorGeometry = new THREE.PlaneGeometry(20,20);
let floorMaterial = new THREE.MeshBasicMaterial({
map: loader.load( 'images/color-grid.png' )
});
let floorMesh = new THREE.Mesh( floorGeometry, floorMaterial );
floorMesh.rotation.x = -Math.PI/2;
scene.add( floorMesh );
let cubeGeometry = new THREE.BoxGeometry(1,1,1);
let materialArray = [
new THREE.MeshBasicMaterial( { map: loader.load("images/xpos.png") } ),
new THREE.MeshBasicMaterial( { map: loader.load("images/xneg.png") } ),
new THREE.MeshBasicMaterial( { map: loader.load("images/ypos.png") } ),
new THREE.MeshBasicMaterial( { map: loader.load("images/yneg.png") } ),
new THREE.MeshBasicMaterial( { map: loader.load("images/zpos.png") } ),
new THREE.MeshBasicMaterial( { map: loader.load("images/zneg.png") } ),
];
let cubeMesh = new THREE.Mesh( cubeGeometry, materialArray );
mover = new THREE.Group();
mover.add( cubeMesh );
mover.position.set(-3, 0.5, 2);
scene.add( mover );
secondMover = new THREE.Group();
secondMover.add( new THREE.Mesh(cubeGeometry, materialArray) );
scene.add(secondMover);
plane = new THREE.Mesh(
new THREE.PlaneGeometry(1,1),
new THREE.MeshBasicMaterial({map:loader.load("images/sphere-colored.png")})
);
plane.position.set(-4, 0.5, 1);
plane.rotation.y = Math.PI/4
scene.add(plane);
secondPlane = new THREE.Mesh(
new THREE.PlaneGeometry(1,1),
new THREE.MeshBasicMaterial({map:loader.load("images/sphere-colored.png")})
);
secondPlane.position.set(4, 0.5, 3);
secondPlane.rotation.y = -Math.PI/4;
scene.add(secondPlane);
}
function update()
{
// the following does not work; need to take into account local rotation before add/sub
// let relativePosition = mover.position.clone().sub( plane.position );
// secondMover.position.copy( relativePosition.add(secondPlane.position) );
let relativePosition = plane.worldToLocal( mover.position.clone() );
secondMover.position.copy( secondPlane.localToWorld( relativePosition ) );
let relativeRotation = mover.quaternion.clone().multiply( plane.quaternion.clone().inverse() );
secondMover.quaternion.copy( relativeRotation.multiply(secondPlane.quaternion) );
keyboard.update();
let translateSpeed = 0.5; // units per second
let distance = translateSpeed * deltaTime;
let rotateSpeed = Math.PI/3; // radians per second
let angle = rotateSpeed * deltaTime;
if (keyboard.isKeyPressed("W"))
mover.translateZ( -distance );
if (keyboard.isKeyPressed("S"))
mover.translateZ( distance );
if (keyboard.isKeyPressed("A"))
mover.translateX( -distance );
if (keyboard.isKeyPressed("D"))
mover.translateX( distance );
if (keyboard.isKeyPressed("R"))
mover.translateY( distance );
if (keyboard.isKeyPressed("F"))
mover.translateY( -distance );
if (keyboard.isKeyPressed("Q"))
mover.rotateY( angle );
if (keyboard.isKeyPressed("E"))
mover.rotateY( -angle );
if (keyboard.isKeyPressed("T"))
mover.children[0].rotateX( angle );
if (keyboard.isKeyPressed("G"))
mover.children[0].rotateX( -angle );
//mesh.rotation.y += 0.01;
}
function render()
{
renderer.render( scene, camera );
}
function animate()
{
requestAnimationFrame(animate);
deltaTime = clock.getDelta();
totalTime += deltaTime;
update();
render();
}
function onWindowResize()
{
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize( window.innerWidth, window.innerHeight );
}
</script>
</body>
</html>