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webgl_interactive_voxelpainter.html
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webgl_interactive_voxelpainter.html
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<!DOCTYPE HTML>
<html lang="en">
<head>
<title>three.js webgl - interactive - voxel painter</title>
<meta charset="utf-8">
<style type="text/css">
body {
font-family: Monospace;
background-color: #f0f0f0;
margin: 0px;
overflow: hidden;
}
#oldie { background-color: #ddd !important }
</style>
</head>
<body>
<script type="text/javascript" src="../build/Three.js"></script>
<script type="text/javascript" src="js/Detector.js"></script>
<script type="text/javascript" src="js/RequestAnimationFrame.js"></script>
<script type="text/javascript" src="js/Stats.js"></script>
<script type="text/javascript">
if ( ! Detector.webgl ) Detector.addGetWebGLMessage();
var container, stats;
var camera, scene, renderer;
var projector, plane, cube;
var mouse2D, mouse3D, ray,
rollOveredFace, isShiftDown = false,
theta = 45, isCtrlDown = false;
var rollOverMesh, rollOverMaterial, voxelPosition = new THREE.Vector3(), tmpVec = new THREE.Vector3();
var cubeGeo, cubeMaterial;
var i, intersector;
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 = '<a href="http://github.com/mrdoob/three.js" target="_blank">three.js</a> - voxel painter - webgl<br /><strong>click</strong>: add voxel, <strong>control + click</strong>: remove voxel, <strong>shift + click</strong>: rotate, <a href="javascript:save();return false;">save .png</a>';
container.appendChild( info );
camera = new THREE.Camera( 40, window.innerWidth / window.innerHeight, 1, 10000 );
camera.position.y = 800;
camera.target.position.y = 200;
scene = new THREE.Scene();
// roll-over helpers
rollOverGeo = new THREE.Cube( 50, 50, 50 );
rollOverMaterial = new THREE.MeshBasicMaterial( { color: 0xff0000, opacity: 0.5, transparent: true } );
rollOverMesh = new THREE.Mesh( rollOverGeo, rollOverMaterial );
scene.addObject( rollOverMesh );
// cubes
cubeGeo = new THREE.Cube( 50, 50, 50 );
cubeMaterial = new THREE.MeshLambertMaterial( { color: 0x00ff80, shading: THREE.FlatShading, map: THREE.ImageUtils.loadTexture( "textures/square-outline-textured.png" ) } );
cubeMaterial.color.setHSV( 0.1, 0.7, 1.0 );
// picking
projector = new THREE.Projector();
// grid
plane = new THREE.Mesh( new THREE.Plane( 1000, 1000, 20, 20 ), new THREE.MeshBasicMaterial( { color: 0x555555, wireframe: true } ) );
plane.rotation.x = - 90 * Math.PI / 180;
scene.addObject( plane );
mouse2D = new THREE.Vector3( 0, 10000, 0.5 );
ray = new THREE.Ray( camera.position, null );
// Lights
var ambientLight = new THREE.AmbientLight( 0x606060 );
scene.addLight( ambientLight );
var directionalLight = new THREE.DirectionalLight( 0xffffff );
directionalLight.position.x = Math.random() - 0.5;
directionalLight.position.y = Math.random() - 0.5;
directionalLight.position.z = Math.random() - 0.5;
directionalLight.position.normalize();
scene.addLight( directionalLight );
var directionalLight = new THREE.DirectionalLight( 0x808080 );
directionalLight.position.x = Math.random() - 0.5;
directionalLight.position.y = Math.random() - 0.5;
directionalLight.position.z = Math.random() - 0.5;
directionalLight.position.normalize();
scene.addLight( directionalLight );
renderer = new THREE.WebGLRenderer( { antialias: true } );
renderer.setSize( window.innerWidth, window.innerHeight );
container.appendChild( renderer.domElement );
stats = new Stats();
stats.domElement.style.position = 'absolute';
stats.domElement.style.top = '0px';
container.appendChild( stats.domElement );
document.addEventListener( 'mousemove', onDocumentMouseMove, false );
document.addEventListener( 'mousedown', onDocumentMouseDown, false );
document.addEventListener( 'keydown', onDocumentKeyDown, false );
document.addEventListener( 'keyup', onDocumentKeyUp, false );
}
function getRealIntersector( intersects ) {
for( i = 0; i < intersects.length; i++ ) {
intersector = intersects[ i ];
if ( intersector.object != rollOverMesh ) {
return intersector;
}
}
return null;
}
function setVoxelPosition( intersector ) {
tmpVec.copy( intersector.face.normal );
voxelPosition.add( intersector.point, intersector.object.matrixRotationWorld.multiplyVector3( tmpVec ) );
voxelPosition.x = Math.floor( voxelPosition.x / 50 ) * 50 + 25;
voxelPosition.y = Math.floor( voxelPosition.y / 50 ) * 50 + 25;
voxelPosition.z = Math.floor( voxelPosition.z / 50 ) * 50 + 25;
}
function onDocumentMouseMove( event ) {
event.preventDefault();
mouse2D.x = ( event.clientX / window.innerWidth ) * 2 - 1;
mouse2D.y = - ( event.clientY / window.innerHeight ) * 2 + 1;
}
function onDocumentMouseDown( event ) {
event.preventDefault();
var intersects = ray.intersectScene( scene );
if ( intersects.length > 0 ) {
intersector = getRealIntersector( intersects );
// delete cube
if ( isCtrlDown ) {
if ( intersector.object != plane ) {
scene.removeObject( intersector.object );
}
// create cube
} else {
intersector = getRealIntersector( intersects );
setVoxelPosition( intersector );
var voxel = new THREE.Mesh( cubeGeo, cubeMaterial );
voxel.position.copy( voxelPosition );
voxel.matrixAutoUpdate = false;
voxel.updateMatrix();
scene.addObject( voxel );
}
}
}
function onDocumentKeyDown( event ) {
switch( event.keyCode ) {
case 16: isShiftDown = true; break;
case 17: isCtrlDown = true; break;
}
}
function onDocumentKeyUp( event ) {
switch( event.keyCode ) {
case 16: isShiftDown = false; break;
case 17: isCtrlDown = false; break;
}
}
function save() {
window.open( renderer.domElement.toDataURL('image/png'), 'mywindow' );
}
//
function animate() {
requestAnimationFrame( animate );
render();
stats.update();
}
function render() {
if ( isShiftDown ) {
theta += mouse2D.x * 3;
}
mouse3D = projector.unprojectVector( mouse2D.clone(), camera );
ray.direction = mouse3D.subSelf( camera.position ).normalize();
var intersects = ray.intersectScene( scene );
if ( intersects.length > 0 ) {
intersector = getRealIntersector( intersects );
if ( intersector ) {
setVoxelPosition( intersector );
rollOverMesh.position = voxelPosition;
}
}
camera.position.x = 1400 * Math.sin( theta * Math.PI / 360 );
camera.position.z = 1400 * Math.cos( theta * Math.PI / 360 );
renderer.render( scene, camera );
}
</script>
</body>
</html>