I have a globe in threeJS that can be rotated in any direction. As it is currently, I can read the correct longitude and latitude located at the center of the globe regardless of rotation. The globe is orientated so that the raycaster.ray.origin.x and raycaster.ray.origin.y read 0,0 where the prime meridian and the equator cross. The raycaster.ray.origin.z reads 500.
Where I am trying to get to, however, is determining the latitude and longitude based on where the mouse is clicked on the globe. I was trying to calculate it off of the raycaster.ray.direction.x , y , z, but I am getting readings whether I am on the object or not.
If I read the direction from origin 0,0, my raycaster.ray.direction.x and y will both read 0 and the z will read -100 (I multiplied these by one hundred to work with better numbers). On the circumference the X will read 0 on the top and bottom of the globe and -40 to 40 left to right. The Y will read 40 to - 40 top to bottom and 0 left to right and the Z direction will be -90 around the entire circumference. However the numbers will continue increasing/ decreasing as all the way to the edge of the screen.
Same is true when the globe is orientated to the north pole/south pole, however, the y at the center is -100/100 and -90/90 on the circumference and the x would be - 100/100 quarter way around the globe and -90/90 around the circumference.
Is a way to get the value of where I am clicking that is just on the object and not the entire screen? I can't wrap my head how to correlate the direction to the origin. I feel like I am getting somewhere, but then just leave confused. Here is everything I got. Any help would be hugely appreciated.
<!DOCTYPE html>
<html lang="en">
<head>
<title>latAndLong</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 {
color: #808080;
font-family:Monospace;
font-size:13px;
text-align:center;
background-color: #ffffff;
margin: 0px;
overflow: hidden;
}
#info {
position: absolute;
top: 0px; width: 100%;
padding: 5px;
}
a {
color: #0080ff;
}
</style>
</head>
<body>
<div id="container"></div>
<div id="info">three.js - earth demo</div>
<script src="javascript/mrdoob-three.js-ad419d4/build/three.min.js"></script>
<script src="javascript/TrackballControls.js"></script>
<script>
var container, stats;
var camera, scene, renderer;
var group;
var mouseX = 0, mouseY = 0;
var mesh;
var windowHalfX = window.innerWidth / 2;
var windowHalfY = window.innerHeight / 2;
var earthgeometry;
var earthmaterial;
var earthloader;
var vector;
var raycaster;
projector = new THREE.Projector();
var text, plane;
init();
animate();
function init() {
container = document.getElementById( 'container' );
camera = new THREE.PerspectiveCamera( 60, window.innerWidth / window.innerHeight, 1, 2000 );
camera.position.z = 500;
scene = new THREE.Scene();
group = new THREE.Object3D();
scene.add( group );
// earth
earthloader = new THREE.TextureLoader();
earthloader.load( 'images/oMap.png', function ( texture ) {
earthgeometry = new THREE.SphereGeometry( 200, 50, 50 );
earthmaterial = new THREE.MeshBasicMaterial( { map: texture, overdraw: true } );
mesh = new THREE.Mesh( earthgeometry, earthmaterial );
group.add( mesh );
} );
//init renderer
renderer = new THREE.CanvasRenderer();
renderer.setSize( window.innerWidth, window.innerHeight );
container.appendChild( renderer.domElement );
window.addEventListener( 'resize', onWindowResize, false );
// trackball mouse controls
// Control Camera with Mouse
controls = new THREE.TrackballControls( camera, container );
controls.rotateSpeed = 1.0;
controls.zoomSpeed = 1.2;
controls.panSpeed = 0.8;
controls.noZoom = true;
controls.noPan = true;
controls.staticMoving = true;
controls.dynamicDampingFactor = 0.3;
controls.keys = [ 65, 83, 68 ];
controls.addEventListener( 'change', render );
}
function onWindowResize() {
windowHalfX = window.innerWidth / 2;
windowHalfY = window.innerHeight / 2;
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize( window.innerWidth, window.innerHeight );
}
function animate() {
requestAnimationFrame( animate );
// Update the Camera Controls
controls.update();
render();
}
function render() {
/*camera.position.x += ( mouseX -camera.position.x) * 0.05;
camera.position.y += ( - mouseY - camera.position.y ) * 0.05;
camera.lookAt( scene.position );*/
renderer.render( scene, camera );
}
container.onmouseup = function(event) {
vector = new THREE.Vector3( ( event.clientX / window.innerWidth ) * 2 - 1, - ( event.clientY / window.innerHeight ) * 2 + 1, 0.5);
projector.unprojectVector( vector, camera );
raycaster = new THREE.Raycaster(camera.position, vector.sub( camera.position ).normalize());
// var intersects = raycaster.intersectObjects(earthgeometry, true);
// not working
// console.log(intersects[0].position.x + ' intersect x');
// not working
// console.log(intersects[0].postion.y + ' intersect y');
// console.log(vector.x + 'vector x');
// console.log(raycaster.ray.origin.x + ' origin x');
// console.log(vector.y + 'vector y');
// console.log(raycaster.ray.origin.y + ' origin y');
// console.log(vector.z + 'vector z');
// console.log(raycaster.ray.origin.z + ' origin z');
// console.log(vector);
// console.log(raycaster);
// console.log(earthgeometry);
// console.log(earthmaterial);
// console.log(earthloader);
// console.log(raycaster.ray.origin.z + 'ray origin z');
// console.log(group);
// console.log(scene);
//Gets latitude and longitude for the center of globe facing you
var long;
if(raycaster.ray.origin.x <= 0 && raycaster.ray.origin.z >=0 ) {
long = raycaster.ray.origin.x * -.18;
console.log('West');
console.log(long);
console.log(raycaster.ray.direction.x * 100 + 'ray x');
} else if (raycaster.ray.origin.x <= 0 && raycaster.ray.origin.z <=0 ) {
long = (raycaster.ray.origin.x + 500) * .18 + 90;
console.log('West');
console.log(long);
console.log(raycaster.ray.direction.x * 100 + 'ray x');
} else if (raycaster.ray.origin.x >= 0 && raycaster.ray.origin.z >=0 ) {
long = raycaster.ray.origin.x * .18;
console.log('East');
console.log(long);
console.log(raycaster.ray.direction.x * 100 + 'ray x');
} else {
long = (raycaster.ray.origin.x - 500) * -.18 + 90;
console.log('East');
console.log(long);
console.log(raycaster.ray.direction.x * 100 + 'ray x');
}
var lat;
if (raycaster.ray.origin.y >= 0) {
lat = raycaster.ray.origin.y * .18;
console.log('North');
console.log(lat);
console.log(raycaster.ray.direction.y * 100 + 'ray y');
console.log(raycaster.ray.direction.z * 100 + 'ray z');
} else {
lat = raycaster.ray.origin.y * -.18;
console.log('South');
console.log(lat);
console.log(raycaster.ray.direction.y * 100 + 'ray y');
console.log(raycaster.ray.direction.z * 100 + 'ray z');
}
}
</script>
</body>
</html>
Related
I am using Threejs for container cargo loading interactive program. Since my cargo loading plan is layer by layer for one container. So I want to divide the browser into multiple scenes. Each scene represents one layer. Every layer has its own arrangement of cargo boxes and operator could make some adjustment. And all cargo boxes are cubic type of shape.
My codes are based on example, webgl_interactive_cubes_ortho.html (r82), and I does not so many cubes in the example so I modify the code example a little bit.
The example codes works but only has one scene with Viewport. Since I want to divide browser vertically, so I begin to divide the height into 2 scenes. Then even I just devided Viewport into 2, see Render method in the script, Then I could not catch object selected in mouse down event.
What I believe is because of mouse click and 3D scene transform calculation. Anyway, in my case, I just want to select the object and drag and drop. Anyone could help me to make the object selected and can make drag and drop?
/1/
//var height = renderer.domElement.height/2; //only want to divide into two layers
/2/
var container, stats;
var camera, scene, scene2, raycaster, renderer;
var cameras =[];
var mouse = new THREE.Vector2(), INTERSECTED,SELECTED;
var radius = 500, theta = 0;
var offset = new THREE.Vector3();
var frustumSize = 1000;
var cubesL0=[], cubesL1=[];
var plane = new THREE.Plane();
var intersection = new THREE.Vector3();
var scenes =[];
var aspect = window.innerWidth / window.innerHeight;
init();
animate();
function init() {
container = document.createElement( 'div' );
document.body.appendChild( container );
var info = document.createElement( 'div' );
info.style.position = 'absolute';
info.style.top = '10px';
info.style.width = '100%';
info.style.textAlign = 'center';
info.innerHTML = 'three.js webgl - interactive cubes';
container.appendChild( info );
camera = new THREE.OrthographicCamera( frustumSize * aspect / - 2, frustumSize * aspect / 2, frustumSize /2 , frustumSize / -2, 1, 1000 );
scene = new THREE.Scene();
scene2 = new THREE.Scene();
var geometry = new THREE.BoxBufferGeometry( 150, 150, 150 );
for ( var i = 0; i < 2; i ++ ) {
var object = new THREE.Mesh( geometry, new THREE.MeshLambertMaterial( { color: 0x000fff } ) );
if(i==0){
object.position.x = - 100;
object.position.y = - 100;
object.position.z = - 100;
}else{
object.position.x = 200;
object.position.y = -359;
object.position.z = -50;
}
scene.add( object );
scenes.push(scene);
cubesL0.push(object);
}
raycaster = new THREE.Raycaster();
renderer = new THREE.WebGLRenderer();
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 );
document.addEventListener( 'mousemove', onDocumentMouseMove, false );
document.addEventListener( 'mousedown', onDocumentMouseDown, false );
document.addEventListener( 'mouseup', onDocumentMouseUp, false );
//
window.addEventListener( 'resize', onWindowResize, false );
}
function onWindowResize() {
var aspect = window.innerWidth / window.innerHeight;
camera.left = - frustumSize * aspect / 2;
camera.right = frustumSize * aspect / 2;
camera.top = frustumSize / 2;
camera.bottom = - frustumSize / 2;
camera.updateProjectionMatrix();
renderer.setSize( window.innerWidth, window.innerHeight );
}
function onDocumentMouseMove( event ) {
event.preventDefault();
mouse.x = ( event.clientX / window.innerWidth ) * 2 - 1;
mouse.y = (- ( event.clientY / window.innerHeight) * 2 + 1);
console.log("mouse x:"+mouse.x+", mouse y:"+mouse.y);
raycaster.setFromCamera( mouse, camera );
if ( SELECTED ) {
if ( raycaster.ray.intersectPlane( plane, intersection ) ) {
SELECTED.position.copy( intersection.sub( offset ) );
}
return;
}
var intersects = raycaster.intersectObjects( cubesL0 );
if ( intersects.length > 0 ) {
console.log(" there is object going to move");
if ( INTERSECTED != intersects[ 0 ].object ) {
if ( INTERSECTED ) INTERSECTED.material.color.setHex( INTERSECTED.currentHex );
INTERSECTED = intersects[ 0 ].object;
INTERSECTED.currentHex = INTERSECTED.material.color.getHex();
plane.setFromNormalAndCoplanarPoint(
camera.getWorldDirection( plane.normal ),
INTERSECTED.position );
}
container.style.cursor = 'pointer';
} else {
if ( INTERSECTED ) INTERSECTED.material.color.setHex( INTERSECTED.currentHex );
INTERSECTED = null;
container.style.cursor = 'auto';
}
}
function onDocumentMouseDown( event ) {
event.preventDefault();
raycaster.setFromCamera( mouse, camera );
var intersects = raycaster.intersectObjects( cubesL0 );
var getTarget = true;
if ( intersects.length > 0 ) {
SELECTED = intersects[ 0 ].object;
if ( raycaster.ray.intersectPlane( plane, intersection ) ) {
offset.copy( intersection ).sub( SELECTED.position );
}
container.style.cursor = 'move';
}
}
function onDocumentMouseUp( event ) {
event.preventDefault();
console.log(" in mouse up event ");
if ( INTERSECTED ) {
SELECTED = null;
}
container.style.cursor = 'auto';
}
//
function animate() {
requestAnimationFrame( animate );
render();
stats.update();
}
function render() {
var width = renderer.domElement.width;
var height = renderer.domElement.height;
//var height = renderer.domElement.height/2; //only want to divide into two layers
var left = 0;
var bottom = 0;
renderer.setViewport( left, bottom, width, height );
renderer.setScissor( left, bottom, width, height );
renderer.render( scene, camera );
}
</script>
<!DOCTYPE html>
<html lang="en">
<head>
<title>three.js webgl - interactive cubes</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 {
font-family: Monospace;
background-color: #f0f0f0;
margin: 0px;
overflow: hidden;
}
</style>
</head>
<body>
<script src="http://threejs.org/build/three.min.js"></script>
<script src="http://threejs.org/examples/js/libs/stats.min.js"></script>
</body>
</html>
I clone https://github.com/mrdoob/three.js.git, and I did 2 changes for sample webgl_loader_utf8.html
Add CubeGeometry
Support find intersections
When I clicked Cubes can find intersections, but clicked utf8 models(for instance, ben or hand models) can't find intersections. Any ideas about this? Many thanks!
<!DOCTYPE html>
<html lang="en">
<head>
<title>three.js webgl - io - UTF8 loader</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 {
font-family: Monospace;
background-color: #000;
color: #fff;
margin: 0px;
overflow: hidden;
}
#info {
color: #fff;
position: absolute;
top: 10px;
width: 100%;
text-align: center;
z-index: 100;
display:block;
}
#info a, .button { color: #f00; font-weight: bold; text-decoration: underline; cursor: pointer }
</style>
</head>
<body>
<div id="info">
three.js -
UTF8 format loader test -
models from The Utah 3D Animation Repository
<div id="show"></div>
</div>
<script src="../build/three.min.js"></script>
<script src="js/loaders/UTF8Loader.js"></script>
<script src="js/loaders/MTLLoader.js"></script>
<script src="js/Detector.js"></script>
<script src="js/libs/stats.min.js"></script>
<script src="js/libs/tween.min.js"></script>
<script>
var SCREEN_WIDTH = window.innerWidth;
var SCREEN_HEIGHT = window.innerHeight;
var FLOOR = -150;
var container, stats;
var camera, scene, renderer;
var projector, raycaster;
var mouse = new THREE.Vector2();
var mesh, zmesh, geometry;
var mouseX = 0, mouseY = 0;
var windowHalfX = window.innerWidth / 2;
var windowHalfY = window.innerHeight / 2;
document.addEventListener('mousemove', onDocumentMouseMove, false);
document.addEventListener( 'mousedown', onDocumentMouseDown, false );
var show = document.getElementById("show");
init();
animate();
function init() {
container = document.createElement( 'div' );
document.body.appendChild( container );
camera = new THREE.PerspectiveCamera( 20, SCREEN_WIDTH / SCREEN_HEIGHT, 1, 2000 );
camera.position.z = 800;
scene = new THREE.Scene();
scene.fog = new THREE.Fog( 0x000000, 800, 2000 );
var path = "textures/cube/SwedishRoyalCastle/";
var format = '.jpg';
var urls = [
path + 'px' + format, path + 'nx' + format,
path + 'py' + format, path + 'ny' + format,
path + 'pz' + format, path + 'nz' + format
];
reflectionCube = THREE.ImageUtils.loadTextureCube( urls );
// LIGHTS
var ambient = new THREE.AmbientLight( 0x222222 );
scene.add( ambient );
var directionalLight = new THREE.DirectionalLight( 0xffffff, 1.1 );
directionalLight.position.set( 0, 20, 300 );
scene.add( directionalLight );
directionalLight.castShadow = true;
//directionalLight.shadowCameraVisible = true;
directionalLight.shadowMapWidth = 2048;
directionalLight.shadowMaHeight = 2048;
var d = 150;
directionalLight.shadowCameraLeft = -d * 1.2;
directionalLight.shadowCameraRight = d * 1.2;
directionalLight.shadowCameraTop = d;
directionalLight.shadowCameraBottom = -d;
directionalLight.shadowCameraNear = 200;
directionalLight.shadowCameraFar = 500;
// RENDERER
renderer = new THREE.WebGLRenderer( { antialias: true } );
renderer.setSize( SCREEN_WIDTH, SCREEN_HEIGHT );
renderer.setClearColor( scene.fog.color, 1 );
renderer.domElement.style.position = "relative";
container.appendChild( renderer.domElement );
//
/**
renderer.gammaInput = true;
renderer.gammaOutput = true;
renderer.physicallyBasedShading = true;
renderer.shadowMapEnabled = true;
renderer.shadowMapType = THREE.PCFShadowMap;
**/
// STATS
stats = new Stats();
stats.domElement.style.position = 'absolute';
stats.domElement.style.top = '0px';
stats.domElement.style.zIndex = 100;
container.appendChild( stats.domElement );
var start = Date.now();
var loader = new THREE.UTF8Loader();
loader.load( "models/utf8/hand.js", function ( object ) {
var end = Date.now();
console.log( "hand", end - start, "ms" );
var s = 350;
object.scale.set( s, s, s );
object.position.x = 125;
object.position.y = -125;
//scene.add( object );
object.traverse( function( node ) {
node.castShadow = true;
node.receiveShadow = true;
if ( node.material && node.material.name === "skin" ) {
node.material.wrapAround = true;
node.material.wrapRGB.set( 0.6, 0.2, 0.1 );
}
} );
}, { normalizeRGB: true } );
loader.load( "models/utf8/ben_dds.js", function ( object ) {
var end = Date.now();
console.log( "ben", end - start, "ms" );
var s = 350;
object.scale.set( s, s, s );
object.position.x = -125;
object.position.y = -125;
scene.add( object );
object.traverse( function( node ) {
node.castShadow = true;
node.receiveShadow = true;
if ( node.material && ( node.material.name === "head" || node.material.name === "skinbody" ) ) {
node.material.wrapAround = true;
node.material.wrapRGB.set( 0.6, 0.2, 0.1 );
}
} );
}, { normalizeRGB: true } );
var geometry = new THREE.CubeGeometry( 20, 20, 20 );
for ( var i = 0; i < 20; i ++ ) {
var object = new THREE.Mesh( geometry, new THREE.MeshLambertMaterial( { color: Math.random() * 0xffffff } ) );
object.position.x = Math.random() * 800 - 400;
object.position.y = Math.random() * 800 - 400;
object.position.z = Math.random() * 800 - 400;
object.rotation.x = Math.random() * 2 * Math.PI;
object.rotation.y = Math.random() * 2 * Math.PI;
object.rotation.z = Math.random() * 2 * Math.PI;
object.scale.x = Math.random() + 0.5;
object.scale.y = Math.random() + 0.5;
object.scale.z = Math.random() + 0.5;
scene.add( object );
}
projector = new THREE.Projector();
raycaster = new THREE.Raycaster();
//
window.addEventListener( 'resize', onWindowResize, false );
}
function onWindowResize() {
windowHalfX = window.innerWidth / 2;
windowHalfY = window.innerHeight / 2;
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize( window.innerWidth, window.innerHeight );
}
function onDocumentMouseMove( event ) {
mouseX = ( event.clientX - windowHalfX );
mouseY = ( event.clientY - windowHalfY );
mouse.x = ( event.clientX / window.innerWidth ) * 2 - 1;
mouse.y = - ( event.clientY / window.innerHeight ) * 2 + 1;
}
//
function animate() {
requestAnimationFrame( animate );
render();
stats.update();
}
function render() {
camera.position.x += ( mouseX - camera.position.x ) * .05;
camera.position.y += ( - mouseY - camera.position.y ) * .05;
camera.lookAt( scene.position );
renderer.render( scene, camera );
}
function onDocumentMouseDown( event ) {
event.preventDefault();
show.innerText = "";
var vector = new THREE.Vector3( ( event.clientX / window.innerWidth ) * 2 - 1, - ( event.clientY / window.innerHeight ) * 2 + 1, 0.5 );
projector.unprojectVector( vector, camera );
var raycaster = new THREE.Raycaster( camera.position, vector.sub( camera.position ).normalize() );
var intersects = raycaster.intersectObjects( scene.children );
if ( intersects.length > 0 ) {
show.innerText = "intersects=" + intersects.length + " at " + Date.now();
console.log(intersects.length);
}
}
</script>
</body>
</html>
You need to add the recursive flag to raycaster.intersectObjects().
var intersects = raycaster.intersectObjects( scene.children, true );
three.js r.58
My problem is the following : The mousehover actions works on the cubes even if the mouse is not directly over the cubes, it works if it is on an Y axis over or under the cubes, out of the scene. Can someone explain me why and how to fix it?
<!DOCTYPE html>
<html lang="fr" xml:lang="fr" xmlns="http://www.w3.org/1999/xhtml">
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.6.2/jquery.min.js" type="text/javascript"></script>
<script src="lib/Three.js" type="text/javascript"></script>
<script src="lib/Detector.js"></script>
<script src="lib/stats.min.js" type="text/javascript"></script>
<script src="lib/THREEx/THREEx.WindowResize.js"></script>
<script src="lib/THREEx/THREEx.FUllScreen.js"></script>
<script src="lib/TrackballControls.js"></script>
<style type="text/css">
body
{
color: #ffffff;
text-align:center;
background-color: gray;
margin: 0px;
}
#center
{
color: #fff;
position: absolute;
top: 50px; width: 100%;
padding: 5px;
z-index:100;
}
#center h1
{
font-size:60px;
}
#container
{
position:absolute;
bottom:0;
}
</style>
</head>
<body>
<br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/>
<div id="container"></div>
</body>
<script>
// MAIN
console.log("Main.js");
if ( ! Detector.webgl ) Detector.addGetWebGLMessage();
// global variables
var container, scene, camera, renderer, stats, controls;
// custom variables
var t = THREE;
var cube;
// to keep track of the mouse position
var projector, INTERSECTED, mouse = { x: 0, y: 0 },
// an array to store our particles in
particles = [];
init();
animate();
function init()
{
// scene
scene = new THREE.Scene();
// camera
var SCREEN_WIDTH = window.innerWidth, SCREEN_HEIGHT = window.innerHeight;
var VIEW_ANGLE = 45, ASPECT = SCREEN_WIDTH / SCREEN_HEIGHT, NEAR = 0.1, FAR = 20000;
camera = new THREE.PerspectiveCamera( VIEW_ANGLE, ASPECT, NEAR, FAR);
scene.add(camera);
camera.position.set(0,0,800);
camera.lookAt(scene.position);
// renderer
renderer = new THREE.CanvasRenderer();
renderer.setSize( window.innerWidth, window.innerHeight );
// container
container = document.getElementById('container');
container.appendChild( renderer.domElement );
// stats
stats = new Stats();
stats.domElement.style.position = 'absolute';
stats.domElement.style.bottom = '0px';
stats.domElement.style.zIndex = 100;
container.appendChild( stats.domElement );
// events
THREEx.WindowResize(renderer, camera);
THREEx.FullScreen.bindKey({ charCode : 'm'.charCodeAt(0) });
// initialize object to perform world/screen calculations
projector = new THREE.Projector();
// CUSTOM
// Cubes
x = window.innerWidth / 5;
y = window.innerHeight / 10;
console.log(window.innerWidth);
console.log(window.innerHeight);
var geometry = new t.CubeGeometry(125,125,125);
var material = new t.MeshBasicMaterial({color:0xCCCCCC});
cube = new t.Mesh(geometry, material);
cube.name = "cube";
scene.add(cube);
cube.position.set(-x,-y,0);
x = window.innerWidth;
y = window.innerHeight / 10;
var geometry2 = new t.CubeGeometry(125,125,125);
var material2 = new t.MeshBasicMaterial({color:0xCCCCCC});
cube2 = new t.Mesh(geometry2, material2);
scene.add(cube2);
cube2.name = "cube2";
cube2.position.set(0,-y,0);
x = window.innerWidth / 5;
y = window.innerHeight / 10;
var geometry3 = new t.CubeGeometry(125,125,125);
var material3 = new t.MeshBasicMaterial({color:0xCCCCCC});
cube3 = new t.Mesh(geometry3, material3);
cube3.name = "cube3";
scene.add(cube3);
cube3.position.set(x,-y,0);
// particles
makeParticles();
// Mouse events
document.addEventListener( 'mousemove', onMouseMove, false );
document.addEventListener( 'mousedown', onMouseDown, false );
}
// called when the mouse moves
function onMouseMove( event )
{
// store the mouseX and mouseY position
mouse.x = ( event.clientX / window.innerWidth ) * 2 - 1;
mouse.y = - ( event.clientY / window.innerHeight ) * 2 + 1;
}
function onMouseDown( event )
{
event.preventDefault();
var vector = new THREE.Vector3( mouse.x, mouse.y, 1 );
projector.unprojectVector( vector, camera );
var ray = new THREE.Ray( camera.position, vector.subSelf( camera.position ).normalize() );
var intersects = ray.intersectObjects( scene.children );
if ( intersects.length > 0 )
{
console.log(INTERSECTED.name);
if(INTERSECTED.name == "cube")
{
page("real");
}
}
}
function animate()
{
cube.rotation.y +=0.005;
cube.rotation.x -=0.005;
cube2.rotation.y +=0.005;
cube2.rotation.x -=0.005;
cube3.rotation.y +=0.005;
cube3.rotation.x -=0.005;
//textMesh.rotation.y +=0.005;
requestAnimationFrame( animate );
render();
update();
}
// creates a random field of Particle objects
function makeParticles()
{
var particle, material;
// we're gonna move from z position -1000 (far away)
// to 1000 (where the camera is) and add a random particle at every pos.
for ( var zpos= -1000; zpos < 1000; zpos+=20 )
{
// we make a particle material and pass through the
// colour and custom particle render function we defined.
material = new THREE.ParticleCanvasMaterial( { program: particleRender } );
// make the particle
particle = new THREE.Particle(material);
// give it a random x and y position between -500 and 500
particle.position.x = Math.random() * 1000 - 500;
particle.position.y = Math.random() * 1000 - 500;
// set its z position
particle.position.z = zpos;
// scale it up a bit
particle.scale.x = particle.scale.y = 10;
// add it to the scene
scene.add( particle );
// and to the array of particles.
particles.push(particle);
}
}
// there isn't a built in circle particle renderer
// so we have to define our own.
function particleRender( context )
{
// we get passed a reference to the canvas context
context.beginPath();
// and we just have to draw our shape at 0,0 - in this
// case an arc from 0 to 2Pi radians or 360ยบ - a full circle!
context.arc( 0, 0, 0.2, 2, Math.PI * 4, true );
context.fillStyle = "white";
context.fill();
};
// moves all the particles dependent on mouse position
function updateParticles()
{
// iterate through every particle
for(var i=0; i<particles.length; i++)
{
particle = particles[i];
// and move it forward dependent on the mouseY position.
particle.position.z += 250 * 0.02;
// if the particle is too close move it to the back
if(particle.position.z>1000) particle.position.z-=2000;
}
}
function render()
{
renderer.render( scene, camera );
}
function update()
{
updateParticles();
stats.update();
// find intersections
// create a Ray with origin at the mouse position
// and direction into the scene (camera direction)
var vector = new THREE.Vector3( mouse.x, mouse.y, 1 );
projector.unprojectVector( vector, camera );
var ray = new THREE.Ray( camera.position, vector.subSelf( camera.position ).normalize() );
// create an array containing all objects in the scene with which the ray intersects
var intersects = ray.intersectObjects( scene.children );
// INTERSECTED = the object in the scene currently closest to the camera
// and intersected by the Ray projected from the mouse position
// if there is one (or more) intersections
if ( intersects.length > 0 )
{
// if the closest object intersected is not the currently stored intersection object
if ( intersects[ 0 ].object != INTERSECTED)
{
// restore previous intersection object (if it exists) to its original scale
if ( INTERSECTED )
{
INTERSECTED.scale.x = INTERSECTED.currentscale.x;
INTERSECTED.scale.y = INTERSECTED.currentscale.y;
INTERSECTED.scale.z = INTERSECTED.currentscale.z;
}
// store reference to closest object as current intersection object
INTERSECTED = intersects[ 0 ].object;
// store scale of closest object (for later restoration)
scalex = INTERSECTED.scale.x;
scaley = INTERSECTED.scale.y;
scalez = INTERSECTED.scale.z;
INTERSECTED.currentscale = { x : scalex , y : scaley, z : scalez };
// set a new scale for closest object
INTERSECTED.scale.x = INTERSECTED.scale.y = INTERSECTED.scale.z = 1.5;
}
}
else // there are no intersections
{
// restore previous intersection object (if it exists) to its original scale
if ( INTERSECTED )
{
INTERSECTED.scale.x = INTERSECTED.currentscale.x;
INTERSECTED.scale.y = INTERSECTED.currentscale.y;
INTERSECTED.scale.z = INTERSECTED.currentscale.z;
}
// remove previous intersection object reference
// by setting current intersection object to "nothing"
INTERSECTED = null;
}
}
// Pour charger une page dynamiquement
function page(page){
$("body").animate({opacity:0},1000, function(){
$("body").empty();
$("body").load(page +'.html');
$("body").animate({opacity:1},1000, function(){
});
});
}
</script>
</html>
Is there an offset between the window top left corner and the canvas top left corner?
If so, you have to calculate the offset (top and left) and subtract the values from the event.client values.
Try this :
// now get the space between top left browser window corner
var absoluteOffsetLeft = 0;
var absoluteOffsetTop = 0;
var obj = <your HTML object containing the canvas>;
// taken from http://www.quirksmode.org/js/findpos.html
if (obj.offsetParent) {
do {
absoluteOffsetLeft += obj.offsetLeft;
absoluteOffsetTop += obj.offsetTop;
} while (obj = obj.offsetParent);
} else {
console.log("Method offsetParent not supported");
}
// YOUR mouse move event handler - also take the innerWidth and Height from the canvas
function onMouseMove( event ) {
// store the mouseX and mouseY position
mouse.x = ( (event.clientX - absoluteOffsetLeft) / canvas.innerWidth ) * 2 - 1;
mouse.y = - ( (event.clientY - absoluteOffsetTop) / canvas.innerHeight ) * 2 + 1;
}
I am trying to detect a cube click in an Object3D group of Cubes. I have viewed, and tried to incorporate the examples and tutorials found at:
http://mrdoob.github.com/three.js/examples/webgl_interactive_cubes.html
and
http://mrdoob.github.com/three.js/examples/canvas_interactive_cubes.html
Also, I have consulted the posts on this site at:
Three.js - how to detect what shape was selected? after drag
and
how to Get CLICKED element in THREE.js
But for some reason, it's still not working. Can anyone please tell me what I'm doing wrong?
Here is my code, thanks:
<!doctype html>
<html>
<head>
<meta charset="UTF-8">
<title>Double Stamp It No Erasies</title>
<style>
html {
background: url(Images/ComicBookExplosionBackground.jpg) no-repeat center center fixed;
-webkit-background-size: cover;
-moz-background-size: cover;
-o-background-size: cover;
background-size: cover;
}
body {
}
</style>
<script src="ThreeJs/build/three.min.js"></script>
</head>
<body onLoad="onLoad();" style="">
<div id="container" style="width:100%; height:100%; position:absolute;"></div>
<script>
var container, ButtonsCamera, ButtonsScene, ButtonsRenderer, ButtonsGeometry, ButtonsGroup;
var mouseX = 0, mouseY = 0;
var windowHalfX = window.innerWidth / 2;
var windowHalfY = window.innerHeight / 2;
/****************************** CLICK START **********************************/
var mouse = { x: 0, y: 0 }, projector, INTERSECTED;
var objects = [];
/****************************** CLICK END **********************************/
document.addEventListener( 'mousemove', onDocumentMouseMove, false );
//document.addEventListener( 'mousedown', onDocumentMouseDown, false );
init();
animate();
function init() {
container = document.createElement( 'div' );
document.body.appendChild( container );
ButtonsCamera = new THREE.PerspectiveCamera( 60, window.innerWidth / window.innerHeight, 1, 10000 );
ButtonsCamera.position.z = 500;
ButtonsScene = new THREE.Scene();
ButtonsScene.fog = new THREE.Fog( 0xffffff, 1, 10000 );
/*************************** STACKOVERFLOW 1ST ANSWER START **********************************/
var ButtonsGeometry = new THREE.CubeGeometry( 100, 100, 100 );
var ButtonsMaterial = new THREE.MeshFaceMaterial( [
new THREE.MeshBasicMaterial( { map: THREE.ImageUtils.loadTexture( 'Images/Twitter.jpg' ) } ),
new THREE.MeshBasicMaterial( { map: THREE.ImageUtils.loadTexture( 'Images/Twitter.jpg' ) } ),
new THREE.MeshBasicMaterial( { map: THREE.ImageUtils.loadTexture( 'Images/Twitter.jpg' ) } ),
new THREE.MeshBasicMaterial( { map: THREE.ImageUtils.loadTexture( 'Images/Twitter.jpg' ) } ),
new THREE.MeshBasicMaterial( { map: THREE.ImageUtils.loadTexture( 'Images/Twitter.jpg' ) } ),
new THREE.MeshBasicMaterial( { map: THREE.ImageUtils.loadTexture( 'Images/Twitter.jpg' ) } )] );
/*************************** STACKOVERFLOW 1ST ANSWER END **********************************/
ButtonsGroup = new THREE.Object3D();
for ( var i = 0; i < 100; i ++ ) {
var ButtonsMesh;
if(i == 0)
{
ButtonsMesh = new THREE.Mesh( ButtonsGeometry, ButtonsMaterial );
}
else
{
ButtonsMesh = new THREE.Mesh( ButtonsGeometry, ButtonsMaterial );
}
ButtonsMesh.position.x = Math.random() * 2000 - 1000;
ButtonsMesh.position.y = Math.random() * 2000 - 1000;
ButtonsMesh.position.z = Math.random() * 2000 - 1000;
ButtonsMesh.rotation.x = Math.random() * 360 * ( Math.PI / 180 );
ButtonsMesh.rotation.y = Math.random() * 360 * ( Math.PI / 180 );
ButtonsMesh.matrixAutoUpdate = false;
ButtonsMesh.updateMatrix();
ButtonsGroup.add( ButtonsMesh );
}
ButtonsScene.add( ButtonsGroup );
/****************************** CLICK START **********************************/
objects.push( ButtonsMesh );
projector = new THREE.Projector();
/****************************** CLICK END **********************************/
ButtonsRenderer = new THREE.WebGLRenderer();
ButtonsRenderer.setSize( window.innerWidth, window.innerHeight );
ButtonsRenderer.sortObjects = false;
container.appendChild( ButtonsRenderer.domElement );
window.addEventListener( 'resize', onWindowResize, false );
/****************************** CLICK START **********************************/
document.addEventListener( 'mousedown', onDocumentMouseDown, false );
/****************************** CLICK END **********************************/
}
/****************************** CLICK START **********************************/
function onDocumentMouseDown( event ) {
//alert('clicky');
event.preventDefault();
var vector = new THREE.Vector3( ( event.clientX / window.innerWidth ) * 2 - 1, - ( event.clientY / window.innerHeight ) * 2 + 1, 0.5 );
projector.unprojectVector( vector, ButtonsCamera );
var raycaster = new THREE.Raycaster( ButtonsCamera.position, vector.subSelf( ButtonsCamera.position ).normalize() );
var intersects = raycaster.intersectObjects( objects);
if ( intersects.length > 0 ) {
intersects[ 0 ].object.material.color.setHex( Math.random() * 0xffffff );
var particle = new THREE.Particle( particleMaterial );
particle.position = intersects[ 0 ].point;
particle.scale.x = particle.scale.y = 8;
ButtonsScene.add( particle );
}
/*
// Parse all the faces
for ( var i in intersects ) {
intersects[ i ].face.material[ 0 ].color.setHex( Math.random() * 0xffffff | 0x80000000 );
}
*/
}
/****************************** CLICK END **********************************/
function onWindowResize() {
windowHalfX = window.innerWidth / 2;
windowHalfY = window.innerHeight / 2;
ButtonsCamera.aspect = window.innerWidth / window.innerHeight;
ButtonsCamera.updateProjectionMatrix();
ButtonsRenderer.setSize( window.innerWidth, window.innerHeight );
}
function onDocumentMouseMove(event) {
mouseX = ( event.clientX - windowHalfX ) * 10;
mouseY = ( event.clientY - windowHalfY ) * 10;
}
function animate() {
requestAnimationFrame( animate );
render();
ButtonsStats.update();
}
/****************************** CLICK START **********************************/
var radius = 100;
var theta = 0;
/****************************** CLICK END **********************************/
function render() {
var ButtonsTime = Date.now() * 0.001;
var rx = Math.sin( ButtonsTime * 0.7 ) * 0.5,
ry = Math.sin( ButtonsTime * 0.3 ) * 0.5,
rz = Math.sin( ButtonsTime * 0.2 ) * 0.5;
ButtonsCamera.position.x += ( mouseX - ButtonsCamera.position.x ) * .05;
ButtonsCamera.position.y += ( - mouseY - ButtonsCamera.position.y ) * .05;
ButtonsCamera.lookAt( ButtonsScene.position );
ButtonsGroup.rotation.x = rx;
ButtonsGroup.rotation.y = ry;
ButtonsGroup.rotation.z = rz;
ButtonsRenderer.render( ButtonsScene, ButtonsCamera );
}
</script>
</body>
</html>
Hey I hope I am not too late but anyway the solution to your problem is
a misplaced statement and a deprecated method.
You only have one object in your objects array that is why when you click on a
random box the raycaster is unlikely to detect an intersection.
Move the array push call into the for loop in order to add every object into
the array instead of the last object created.
for (var i = 0; i < 100; i++) {
var ButtonsMesh;
if (i == 0)
{
ButtonsMesh = new THREE.Mesh(ButtonsGeometry, ButtonsMaterial);
}
else
{
ButtonsMesh = new THREE.Mesh(ButtonsGeometry, ButtonsMaterial);
}
ButtonsMesh.position.x = Math.random() * 2000 - 1000;
ButtonsMesh.position.y = Math.random() * 2000 - 1000;
ButtonsMesh.position.z = Math.random() * 2000 - 1000;
ButtonsMesh.rotation.x = Math.random() * 360 * (Math.PI / 180);
ButtonsMesh.rotation.y = Math.random() * 360 * (Math.PI / 180);
ButtonsMesh.matrixAutoUpdate = false;
ButtonsMesh.updateMatrix();
ButtonsGroup.add(ButtonsMesh);
objects.push(ButtonsMesh);
}
The second problem is that newer versions of THREE don't use subSelf(),
it is replaced by sub(). So make the change to the Raycaster definition.
var raycaster = new THREE.Raycaster(ButtonsCamera.position,
vector.sub(ButtonsCamera.position).normalize());
That should solve your problems but there are more errors in your code
but they are all trivial.
I hope this helps and here is a working version: http://jsbin.com/uhihoq/1/edit
Peace!
Below is my code for the scene of tube geometry. I've loaded 200 co-ordinates as JSON data from external file.
<!DOCTYPE html>
<html lang="en">
<head>
<title>3d Model using HTML5 and three.js</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 {
font-family: Monospace;
background-color: #f0f0f0;
margin: 0px;
overflow: hidden;
}
#info {
color:#000;
position: absolute;
top: 0px; width: 100%;
padding: 5px;
}
</style>
</head>
<body>
<div id="info">
WASD-move, RF-up/down, QE-roll, mouse-look around, mouse left/right click- zoom-in/out
</div>
<script src="three.min.js" type="text/javascript"></script>
<script src="Curve.js" type="text/javascript"></script>
<script src="Stats.js" type="text/javascript"></script>
<script src="Detector.js" type="text/javascript"></script>
<script src="path.js" type="text/javascript"></script>
<script>
// variables
var container, stats;
var camera, scene, renderer, controls;
var text, plane, tube, tubeMesh, parent;
var targetRotation = 0;
var targetRotationOnMouseDown = 0;
var mouseX = 0, mouseY = 0; var radius = 6371;
var mouseXOnMouseDown = 0;
var windowHalfX = window.innerWidth / 2;
var windowHalfY = window.innerHeight / 2;
var clock = new THREE.Clock();
function plotPath()
{
var obj = getPath();
var segments = 60;
var closed = false;
var debug = true;
var radiusSegments = 12;
var tube;
var points = [];
var x=0,y=0,z=0;
var extrudePath;
for(var i=0; i<obj.path.length; i++)
{
console.log(obj.path[i].point);
points.push(obj.path[i].point);
}
extrudePath = new THREE.SplineCurve3(points);
tube = new THREE.TubeGeometry(extrudePath, segments, 2, radiusSegments, closed, debug);
tubeMesh = new THREE.Mesh(tube ,new THREE.MeshBasicMaterial({
color: 0x000000, side: THREE.DoubleSide,
opacity: 0.5, transparent: true, wireframe: true}));
if ( tube.debug ) tubeMesh.add( tube.debug );
scene.add( tubeMesh );
}
init();
animate();
function init(){
// container
container = document.createElement( 'div' );
document.body.appendChild( container );
// scene
scene = new THREE.Scene();
scene.fog = new THREE.FogExp2( 0xcccccc, 0.002 );
// renderer
renderer = new THREE.WebGLRenderer( { antialias: false } );
renderer.setClearColor( scene.fog.color, 1 );
renderer.setSize( window.innerWidth, window.innerHeight );
container.appendChild( renderer.domElement );
// camera
camera = new THREE.PerspectiveCamera( 60, window.innerWidth / window.innerHeight, 1, 1000 );
// light
light = new THREE.DirectionalLight( 0xffffff );
light.position.set( 1, 1, 1 );
scene.add( light );
light = new THREE.DirectionalLight( 0x002288 );
light.position.set( -1, -1, -1 );
scene.add( light );
light = new THREE.AmbientLight( 0x555555 );
scene.add( light );
// CONTROLS
controls = new THREE.RollControls( camera );
controls.movementSpeed = 50;
controls.lookSpeed = 3;
controls.constrainVertical = [ -0.5, 0.5 ];
// Grid
geometry = new THREE.Geometry();
geometry.vertices.push( new THREE.Vector3( - 500, 0, 0 ) );
geometry.vertices.push( new THREE.Vector3( 500, 0, 0 ) );
for ( var i = 0; i <= 20; i ++ ) {
line = new THREE.Line( geometry, new THREE.LineBasicMaterial( { color: 0x000000, opacity: 0.2 } ) );
line.position.z = ( i * 50 ) - 500;
scene.add( line );
line = new THREE.Line( geometry, new THREE.LineBasicMaterial( { color: 0x000000, opacity: 0.2 } ) );
line.position.x = ( i * 50 ) - 500;
line.rotation.y = 90 * Math.PI / 180;
scene.add( line );
}
// projector
projector = new THREE.Projector();
plotPath();
// stats
stats = new Stats();
stats.domElement.style.position = 'absolute';
stats.domElement.style.top = '0px';
stats.domElement.style.zIndex = 100;
container.appendChild( stats.domElement );
// events
window.addEventListener( 'resize', onWindowResize, false );
}
function onWindowResize() {
windowHalfX = window.innerWidth / 2;
windowHalfY = window.innerHeight / 2;
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize( window.innerWidth, window.innerHeight );
}
function animate() {
requestAnimationFrame( animate );
render();
update();
}
function update(){
controls.update(clock.getDelta());
stats.update();
}
function render() {
renderer.render( scene, camera );
}
</script>
</body>
</html>
How can I identify a point on tube circumference and how to rotate a tube from that point ?
OrbitControls, for example, has a property target which is both the center of rotation and the camera look-at position.
controls = new THREE.OrbitControls( camera );
You can change the center of rotation of the camera using picking.
function onDocumentMouseDown( event ) {
event.preventDefault();
var vector = new THREE.Vector3(
( event.clientX / window.innerWidth ) * 2 - 1,
- ( event.clientY / window.innerHeight ) * 2 + 1,
0.5 );
projector.unprojectVector( vector, camera );
var ray = new THREE.Raycaster( camera.position, vector.sub( camera.position ).normalize() );
var intersects = ray.intersectObjects( objects );
if ( intersects.length > 0 ) {
controls.target.copy( intersects[0].point );
}
}
EDIT: Here is an updated fiddle: http://jsfiddle.net/eVkgs/30/
three.js r.65