11-raycaster-drag-drop.html
<!DOCTYPE html>
<html lang="en">
<head>
<title>three.js webgl - draggable objects</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 {
margin: 0px;
overflow: hidden;
}
</style>
<script src="../frameworks/three.js"></script>
<script src="../frameworks/stats.js"></script>
<script src="../frameworks/loaders/MTLLoader.js"></script>
<script src="../frameworks/loaders/OBJLoader.js"></script>
<script src="../frameworks/controls/TrackballControls.js"></script>
</head>
<body>
<script>
var container, stats;
var camera, controls, scene, renderer;
var objects = [];
var plane = new THREE.Plane();
var raycaster = new THREE.Raycaster();
var mouse = new THREE.Vector2();
var offset = new THREE.Vector3();
var intersection = new THREE.Vector3();
var SELECTED, DRAGGED, CHEST;
init();
function init() {
container = document.createElement( 'div' );
document.body.appendChild( container );
camera = new THREE.PerspectiveCamera( 70, window.innerWidth / window.innerHeight, 1, 10000 );
camera.position.z = 6;
camera.position.y = 5;
controls = new THREE.TrackballControls( camera );
controls.rotateSpeed = 1.0;
controls.zoomSpeed = 1.2;
controls.panSpeed = 0.8;
controls.noZoom = false;
controls.noPan = false;
controls.staticMoving = true;
controls.dynamicDampingFactor = 0.3;
scene = new THREE.Scene();
scene.add( new THREE.AmbientLight( 0x505050 ) );
var light = new THREE.SpotLight( 0xffffff, 1.5 );
light.position.set( 0, 500, 2000 );
scene.add( light );
renderer = new THREE.WebGLRenderer( { antialias: true } );
renderer.setClearColor( 0xf0f0f0 );
renderer.setPixelRatio( window.devicePixelRatio );
renderer.setSize( window.innerWidth, window.innerHeight );
renderer.sortObjects = false;
container.appendChild( renderer.domElement );
stats = new Stats();
container.appendChild( stats.dom );
renderer.domElement.addEventListener( 'mousemove', onDocumentMouseMove, false );
renderer.domElement.addEventListener( 'mousedown', onDocumentMouseDown, false );
renderer.domElement.addEventListener( 'mouseup', onDocumentMouseUp, false );
window.addEventListener( 'resize', onWindowResize, false );
loadOBJ ("../data/models/objects/", "potion.mtl", "potion.obj", scene, function (potion){
loadOBJ ("../data/models/objects/", "potion2.mtl", "potion.obj", scene, function (potion2){
loadOBJ ("../data/models/objects/", "potion3.mtl", "potion.obj", scene, function (potion3){
loadOBJ ("../data/models/objects/", "money.mtl", "money.obj", scene, function (money){
loadOBJ ("../data/models/objects/", "axe.mtl", "axe.obj", scene, function (axe){
loadOBJ ("../data/models/objects/", "hammer.mtl", "hammer.obj", scene, function (hammer){
loadOBJ ("../data/models/objects/", "shield.mtl", "shield.obj", scene, function (shield){
loadOBJ ("../data/models/objects/", "sword.mtl", "sword.obj", scene, function (sword){
loadOBJ ("../data/models/objects/", "staff.mtl", "staff.obj", scene, function (staff){
loadOBJ ("../data/models/objects/", "chest.mtl", "chest.obj", scene, function (chest){
var object = shield.clone();
object.position.x = Math.random() * 20 - 10;
object.position.z = Math.random() * 10 - 10;
object.rotation.z = Math.PI/2;
object.rotation.y = Math.random() * 2 * Math.PI;
scene.add( object );
objects.push( object );
object = staff.clone();
object.position.x = Math.random() * 20 - 10;
object.position.z = Math.random() * 10 - 10;
object.rotation.z = Math.PI/2;
object.rotation.y = Math.random() * 2 * Math.PI;
scene.add( object );
objects.push( object )
object = sword.clone();
object.position.x = Math.random() * 20 - 10;
object.position.z = Math.random() * 10 - 10;
object.rotation.z = Math.PI/2;
object.rotation.y = Math.random() * 2 * Math.PI;
scene.add( object );
objects.push( object )
for ( var i = 0; i < 2; i ++ ) {
object = axe.clone();
object.position.x = Math.random() * 20 - 10;
object.position.z = Math.random() * 10 - 10;
object.rotation.z = Math.PI/2;
object.rotation.y = Math.random() * 2 * Math.PI;
scene.add( object );
objects.push( object );
}
for ( var i = 0; i < 2; i ++ ) {
object = hammer.clone();
object.position.x = Math.random() * 20 - 10;
object.position.z = Math.random() * 10 - 10;
object.rotation.z = Math.PI/2;
object.rotation.y = Math.random() * 2 * Math.PI;
scene.add( object );
objects.push( object );
}
for ( var i = 0; i < 4; i ++ ) {
object = potion.clone();
object.position.x = Math.random() * 20 - 10;
object.position.z = Math.random() * 10 - 10;
object.rotation.y = Math.random() * 2 * Math.PI;
scene.add( object );
objects.push( object );
}
for ( var i = 0; i < 4; i ++ ) {
object = potion2.clone();
object.position.x = Math.random() * 20 - 10;
object.position.z = Math.random() * 10 - 10;
object.rotation.y = Math.random() * 2 * Math.PI;
scene.add( object );
objects.push( object );
}
for ( var i = 0; i < 4; i ++ ) {
object = potion3.clone();
object.position.x = Math.random() * 20 - 10;
object.position.z = Math.random() * 10 - 10;
object.rotation.y = Math.random() * 2 * Math.PI;
scene.add( object );
objects.push( object );
}
for ( var i = 0; i < 4; i ++ ) {
object = money.clone();
object.position.x = Math.random() * 20 - 10;
object.position.z = Math.random() * 10 - 10;
object.rotation.y = Math.random() * 2 * Math.PI;
scene.add( object );
objects.push( object );
};
CHEST=chest;
chest.name="chest";
object = chest;
object.position.x = 0;
object.position.z = 0;
object.rotation.y = -Math.PI/2;
scene.add( object );
objects.push( object );
animate();
});});});});});});});});});});
}
function onWindowResize() {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize( window.innerWidth, window.innerHeight );
}
function animate() {
requestAnimationFrame( animate );
render();
stats.update();
}
function render() {
controls.update();
renderer.render( scene, camera );
}
function loadOBJ (path, fileMaterial, fileOBJ, scene, fSuc, fFail) {
var mtlLoader = new THREE.MTLLoader();
mtlLoader.setPath(path);
mtlLoader.load(fileMaterial, function (materials) {
materials.preload();
var objLoader = new THREE.OBJLoader();
objLoader.setMaterials(materials);
objLoader.setPath(path);
objLoader.load(fileOBJ, function (object) {
var mesh=object;
object.traverse(function (child) {
if (child instanceof THREE.Mesh) {
mesh=child;
}
});
fSuc(mesh);
});
});
};
function onDocumentMouseMove( event ) {
event.preventDefault();
mouse.x = ( event.clientX / window.innerWidth ) * 2 - 1;
mouse.y = - ( event.clientY / window.innerHeight ) * 2 + 1;
raycaster.setFromCamera( mouse, camera );
if ( DRAGGED ) {
if ( raycaster.ray.intersectPlane( plane, intersection ) ) {
DRAGGED.position.copy( intersection.sub( offset ) );
}
return;
}
var intersects = raycaster.intersectObjects( objects );
if ( intersects.length > 0 ) {
if ( SELECTED != intersects[ 0 ].object ) {
SELECTED = intersects[ 0 ].object;
plane.setFromNormalAndCoplanarPoint(
camera.getWorldDirection( plane.normal ),
SELECTED.position );
}
container.style.cursor = 'pointer';
} else {
SELECTED = null;
container.style.cursor = 'auto';
}
}
function onDocumentMouseDown( event ) {
event.preventDefault();
if (SELECTED) {
controls.enabled = false;
DRAGGED = SELECTED;
if ( raycaster.ray.intersectPlane( plane, intersection ) ) {
offset.copy( intersection ).sub( DRAGGED.position );
}
container.style.cursor = 'move';
}
}
function onDocumentMouseUp( event ) {
event.preventDefault();
controls.enabled = true;
if ( DRAGGED ) {
if (DRAGGED.name!="chest") {
var intersects = raycaster.intersectObject( CHEST );
if ( intersects.length > 0 ) {
scene.remove(DRAGGED)
}
}
DRAGGED = null;
}
container.style.cursor = 'auto';
}
</script>
</body>
</html>