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SimpleRaycast.html
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SimpleRaycast.html
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<!DOCTYPE html>
<html lang="en">
<head>
<title>Physijs + THREE.js = Simple Raycast Demo</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>
<script src="js/three.js"></script>
<script type="text/javascript" src="js/physi.js"></script>
<script src="js/controls/OrbitControls.js"></script>
<script>
'use strict';
Physijs.scripts.worker = 'js/physijs_worker.js';
Physijs.scripts.ammo = 'ammo.js';
var initScene, render, renderer, scene, camera, box1, box2, floor;
var container;
var camera, scene, controls, renderer;
var mouseCoords = new THREE.Vector2();
var raycaster = new THREE.Raycaster();
var windowHalfX = window.innerWidth / 2;
var windowHalfY = window.innerHeight / 2;
var clock = new THREE.Clock();
var ballMaterial = new THREE.MeshPhongMaterial( { color: 0x202020 } );
var pos = new THREE.Vector3();
var quat = new THREE.Quaternion();
init();
animate();
function init() {
container = document.createElement( 'div' );
document.body.appendChild( container );
camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 0.1, 10000 );
camera.position.z = 20;
camera.position.y = 5;
controls = new THREE.OrbitControls( camera );
// scene
//scene = new THREE.Scene();
scene = new Physijs.Scene;
scene.setGravity(new THREE.Vector3( 0, -10, 0 ));
//floor
floor = new Physijs.BoxMesh(
new THREE.CubeGeometry( 20, 0.1, 20 ),
new THREE.MeshPhongMaterial({ color:0xffffff}),
0 //mass
);
floor.receiveShadow = true;
floor.position.set(0,0,0);
scene.add( floor );
// Add a static Box
box1 = new Physijs.BoxMesh(
new THREE.CubeGeometry( 1, 1, 1 ),
new THREE.MeshPhongMaterial({ color:0xffffff}),
0 //mass
);
box1.position.y = 6;
scene.add( box1 );
box1.castShadow = true;
// Add a dynamic Box
box2 = new Physijs.BoxMesh(
new THREE.CubeGeometry( 1, 1, 1 ),
new THREE.MeshPhongMaterial({ color:0xffffff})
);
box2.position.y = 3;
scene.add( box2 );
box2.castShadow = true;
//create a point to point constraint between the two boxes
var constraint = new Physijs.PointConstraint(
box2, // First object to be constrained
box1, // OPTIONAL second object - if omitted then physijs_mesh_1 will be constrained to the scene
new THREE.Vector3( 0, 1, 0 ) // point in the scene to apply the constraint
);
scene.addConstraint( constraint );
var manager = new THREE.LoadingManager();
manager.onProgress = function ( item, loaded, total ) {
console.log( item, loaded, total );
};
var loader = new THREE.ImageLoader( manager );
var crateTexture = new THREE.Texture();
loader.load( 'textures/crate.jpg', function ( image ) {
crateTexture.image = image;
crateTexture.needsUpdate = true;
box1.material.map = crateTexture;
box2.material.map = crateTexture;
} );
var ambientLight = new THREE.AmbientLight( 0x707070 );
scene.add( ambientLight );
var light = new THREE.DirectionalLight( 0xffffff, 1 );
light.position.set( -10, 18, 5 );
light.castShadow = true;
var d = 14;
light.shadow.camera.left = -d;
light.shadow.camera.right = d;
light.shadow.camera.top = d;
light.shadow.camera.bottom = -d;
light.shadow.camera.near = 2;
light.shadow.camera.far = 50;
light.shadow.mapSize.x = 1024;
light.shadow.mapSize.y = 1024;
scene.add( light );
//
renderer = new THREE.WebGLRenderer();
renderer.setPixelRatio( window.devicePixelRatio );
renderer.setSize( window.innerWidth, window.innerHeight );
renderer.shadowMap.enabled = true;
container.appendChild( renderer.domElement );
container.appendChild( renderer.domElement );
document.addEventListener( 'mousemove', onDocumentMouseMove, false );
window.addEventListener( 'resize', onWindowResize, false );
window.addEventListener( 'mousedown', onMouseDown, 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 onMouseDown(event) {
mouseCoords.set(
( event.clientX / window.innerWidth ) * 2 - 1,
- ( event.clientY / window.innerHeight ) * 2 + 1
);
raycaster.setFromCamera( mouseCoords, camera );
// Creates a ball and throws it
var ballMass = 35;
var ballRadius = 0.4;
var ball = new Physijs.SphereMesh(
new THREE.SphereGeometry( ballRadius, 14, 10 ),
ballMaterial,
ballMass
);
ball.castShadow = true;
ball.receiveShadow = true;
ball.position.copy(raycaster.ray.direction);
ball.position.add(raycaster.ray.origin);
pos.copy( raycaster.ray.direction );
pos.multiplyScalar( 80 );
ball.setLinearVelocity( new Ammo.btVector3( pos.x, pos.y, pos.z ) );
scene.add(ball);
//var ballShape = new Ammo.btSphereShape( ballRadius );
//ballShape.setMargin( margin );
//pos.copy( raycaster.ray.direction );
//pos.add( raycaster.ray.origin );
//quat.set( 0, 0, 0, 1 );
//var ballBody = createRigidBody( ball, ballShape, ballMass, pos, quat );
//pos.copy( raycaster.ray.direction );
//pos.multiplyScalar( 80 );
//ballBody.setLinearVelocity( new Ammo.btVector3( pos.x, pos.y, pos.z ) );
}
function onDocumentMouseMove( event ) {
//clear all materials to white
for ( var i = 0; i < scene.children.length; i++ ) {
if(scene.children[i] instanceof THREE.Mesh) {
scene.children[ i ].material.color.set( 0xffffff );
}
}
mouseCoords.set(
( event.clientX / window.innerWidth ) * 2 - 1,
- ( event.clientY / window.innerHeight ) * 2 + 1
);
raycaster.setFromCamera( mouseCoords, camera );
// calculate objects intersecting the picking ray
var intersects = raycaster.intersectObjects( scene.children );
intersects[ 0 ].object.material.color.set( 0xff0000 );
}
//
function animate() {
requestAnimationFrame( animate );
render();
}
function render() {
var deltaTime = clock.getDelta();
controls.update(deltaTime);
scene.simulate(); // run physics
camera.lookAt( scene.position );
renderer.render( scene, camera );
}
</script>
</body>
</html>