notes/Basic Three.js Spin Cube with Mouse Cursor or Touch Screen-9AKxPfbA.html
<!DOCTYPE html>
<html>
<head>
<title>mouse spin cube</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
<style>
body {
background-color: white;
margin: 0px;
overflow: hidden;
}
</style>
</head>
<body>
<script src="../build/three.min.js"></script>
<script>
var container;
var camera, scene, renderer;
var cube, plane;
var targetRotation = 0;
var targetRotationOnMouseDown = 0;
var mouseX = 0;
var mouseXOnMouseDown = 0;
var windowHalfX = window.innerWidth / 2;
var windowHalfY = window.innerHeight / 2;
init();
animate();
function init() {
container = document.createElement( 'div' );
document.body.appendChild( container );
camera = new THREE.PerspectiveCamera( 70, window.innerWidth / window.innerHeight, 1, 1000 );
camera.position.y = 150;
camera.position.z = 500;
scene = new THREE.Scene();
// Cube
var geometry = new THREE.CubeGeometry( 200, 200, 200 );
for ( var i = 0; i < geometry.faces.length; i ++ ) {
geometry.faces[ i ].color.setHex( Math.random() * 0xffffff );
}
var material = new THREE.MeshBasicMaterial( { vertexColors: THREE.FaceColors } );
cube = new THREE.Mesh( geometry, material );
cube.position.y = 150;
scene.add( cube );
// Plane
var geometry = new THREE.PlaneGeometry( 200, 200 );
geometry.applyMatrix( new THREE.Matrix4().makeRotationX( - Math.PI / 2 ) );
var material = new THREE.MeshBasicMaterial( { color: 0xC0C0C0 } );
plane = new THREE.Mesh( geometry, material );
scene.add( plane );
renderer = new THREE.CanvasRenderer();
renderer.setSize( window.innerWidth, window.innerHeight );
container.appendChild( renderer.domElement );
document.addEventListener( 'mousedown', onDocumentMouseDown, false );
document.addEventListener( 'touchstart', onDocumentTouchStart, false );
document.addEventListener( 'touchmove', onDocumentTouchMove, false );
//
}
function onDocumentMouseDown( event ) {
event.preventDefault();
document.addEventListener( 'mousemove', onDocumentMouseMove, false );
document.addEventListener( 'mouseup', onDocumentMouseUp, false );
document.addEventListener( 'mouseout', onDocumentMouseOut, false );
mouseXOnMouseDown = event.clientX - windowHalfX;
targetRotationOnMouseDown = targetRotation;
}
function onDocumentMouseMove( event ) {
mouseX = event.clientX - windowHalfX;
targetRotation = targetRotationOnMouseDown + ( mouseX - mouseXOnMouseDown ) * 0.02;
}
function onDocumentMouseUp( event ) {
document.removeEventListener( 'mousemove', onDocumentMouseMove, false );
document.removeEventListener( 'mouseup', onDocumentMouseUp, false );
document.removeEventListener( 'mouseout', onDocumentMouseOut, false );
}
function onDocumentMouseOut( event ) {
document.removeEventListener( 'mousemove', onDocumentMouseMove, false );
document.removeEventListener( 'mouseup', onDocumentMouseUp, false );
document.removeEventListener( 'mouseout', onDocumentMouseOut, false );
}
function onDocumentTouchStart( event ) {
if ( event.touches.length === 1 ) {
event.preventDefault();
mouseXOnMouseDown = event.touches[ 0 ].pageX - windowHalfX;
targetRotationOnMouseDown = targetRotation;
}
}
function onDocumentTouchMove( event ) {
if ( event.touches.length === 1 ) {
event.preventDefault();
mouseX = event.touches[ 0 ].pageX - windowHalfX;
targetRotation = targetRotationOnMouseDown + ( mouseX - mouseXOnMouseDown ) * 0.02;
}
}
//
function animate() {
requestAnimationFrame( animate );
render();
}
function render() {
plane.rotation.y = cube.rotation.y += ( targetRotation - cube.rotation.y ) * 0.02;
renderer.render( scene, camera );
}
</script>
</body>
</html>
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