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+<!DOCTYPE HTML>
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+<html lang="en">
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+ <head>
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+ <title>three.js - interactive - voxel painter</title>
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+ <meta charset="utf-8">
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+ <style type="text/css">
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+ body {
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+ font-family: Monospace;
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+ background-color: #f0f0f0;
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+ margin: 0px;
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+ overflow: hidden;
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+ }
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+ </style>
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+ </head>
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+ <body>
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+
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+ <script type="text/javascript" src="../build/Three.js"></script>
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+
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+ <script type="text/javascript" src="geometry/primitives/Cube.js"></script>
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+ <script type="text/javascript" src="geometry/primitives/Plane.js"></script>
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+
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+ <script type="text/javascript" src="js/Stats.js"></script>
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+
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+ <script type="text/javascript">
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+
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+ var container, stats;
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+ var camera, scene, renderer;
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+ var projector, plane, cube;
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+ var mouse2D, mouse3D, ray,
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+ rollOveredFace, isShiftDown = false,
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+ theta = 45, isCtrlDown = false;
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+
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+ init();
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+ setInterval( loop, 1000 / 60 );
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+
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+ function init() {
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+
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+ container = document.createElement( 'div' );
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+ document.body.appendChild( container );
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+
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+ var info = document.createElement( 'div' );
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+ info.style.position = 'absolute';
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+ info.style.top = '10px';
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+ info.style.width = '100%';
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+ info.style.textAlign = 'center';
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+ info.innerHTML = '<a href="http://github.com/mrdoob/three.js" target="_blank">three.js</a> - voxel painter<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>';
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+ container.appendChild( info );
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+
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+ camera = new THREE.Camera( 40, window.innerWidth / window.innerHeight, 1, 10000 );
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+ camera.position.y = 800;
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+ camera.target.position.y = 200;
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+
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+ scene = new THREE.Scene();
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+
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+ // Grid
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+
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+ var geometry = new THREE.Geometry();
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+ geometry.vertices.push( new THREE.Vertex( new THREE.Vector3( - 500, 0, 0 ) ) );
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+ geometry.vertices.push( new THREE.Vertex( new THREE.Vector3( 500, 0, 0 ) ) );
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+
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+ for ( var i = 0; i <= 20; i ++ ) {
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+
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+ var line = new THREE.Line( geometry, new THREE.LineColorMaterial( 0x000000, 0.2 ) );
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+ line.position.z = ( i * 50 ) - 500;
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+ scene.addObject( line );
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+
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+ var line = new THREE.Line( geometry, new THREE.LineColorMaterial( 0x000000, 0.2 ) );
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+ line.position.x = ( i * 50 ) - 500;
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+ line.rotation.y = 90 * Math.PI / 180;
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+ scene.addObject( line );
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+
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+ }
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+
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+ projector = new THREE.Projector();
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+
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+ plane = new THREE.Mesh( new Plane( 1000, 1000, 20, 20 ), new THREE.MeshFaceMaterial() );
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+ plane.rotation.x = - 90 * Math.PI / 180;
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+ scene.addObject( plane );
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+
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+ mouse2D = new THREE.Vector3( 0, 10000, 0.5 );
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+ ray = new THREE.Ray( camera.position, null );
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+
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+ // Lights
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+
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+ var ambientLight = new THREE.AmbientLight( 0x606060 );
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+ scene.addLight( ambientLight );
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+
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+ var directionalLight = new THREE.DirectionalLight( 0xffffff );
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+ directionalLight.position.x = Math.random() - 0.5;
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+ directionalLight.position.y = Math.random() - 0.5;
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+ directionalLight.position.z = Math.random() - 0.5;
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+ directionalLight.position.normalize();
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+ scene.addLight( directionalLight );
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+
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+ var directionalLight = new THREE.DirectionalLight( 0x808080 );
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+ directionalLight.position.x = Math.random() - 0.5;
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+ directionalLight.position.y = Math.random() - 0.5;
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+ directionalLight.position.z = Math.random() - 0.5;
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+ directionalLight.position.normalize();
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+ scene.addLight( directionalLight );
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+
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+ renderer = new THREE.CanvasRenderer();
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+ renderer.setSize( window.innerWidth, window.innerHeight );
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+
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+ container.appendChild(renderer.domElement);
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+
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+ stats = new Stats();
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+ stats.domElement.style.position = 'absolute';
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+ stats.domElement.style.top = '0px';
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+ container.appendChild( stats.domElement );
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+
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+ document.addEventListener( 'mousemove', onDocumentMouseMove, false );
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+ document.addEventListener( 'mousedown', onDocumentMouseDown, false );
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+ document.addEventListener( 'keydown', onDocumentKeyDown, false );
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+ document.addEventListener( 'keyup', onDocumentKeyUp, false );
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+
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+ }
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+
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+ function onDocumentMouseMove( event ) {
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+
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+ event.preventDefault();
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+
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+ mouse2D.x = ( event.clientX / window.innerWidth ) * 2 - 1;
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+ mouse2D.y = - ( event.clientY / window.innerHeight ) * 2 + 1;
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+
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+ }
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+
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+ function onDocumentMouseDown( event ) {
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+
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+ event.preventDefault();
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+
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+ var intersects = ray.intersectScene( scene );
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+
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+ if ( intersects.length > 0 ) {
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+
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+ if ( isCtrlDown ) {
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+
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+ if ( intersects[ 0 ].object != plane ) {
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+
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+ scene.removeObject( intersects[ 0 ].object );
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+
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+ }
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+
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+ } else {
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+
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+ var position = new THREE.Vector3().add( intersects[ 0 ].point, intersects[ 0 ].object.matrixRotation.transform( intersects[ 0 ].face.normal.clone() ) );
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+
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+ var voxel = new THREE.Mesh( new Cube( 50, 50, 50 ), [ new THREE.MeshColorFillMaterial( 0x00ff80, 1 ), new THREE.MeshFaceMaterial() ] );
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+ voxel.position.x = Math.floor( position.x / 50 ) * 50 + 25;
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+ voxel.position.y = Math.floor( position.y / 50 ) * 50 + 25;
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+ voxel.position.z = Math.floor( position.z / 50 ) * 50 + 25;
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+ voxel.overdraw = true;
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+ scene.addObject( voxel );
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+
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+ }
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+
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+ }
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+ }
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+
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+ function onDocumentKeyDown( event ) {
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+
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+ switch( event.keyCode ) {
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+
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+ case 16: isShiftDown = true; break;
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+ case 17: isCtrlDown = true; break;
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+
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+ }
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+
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+ }
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+
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+ function onDocumentKeyUp( event ) {
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+
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+ switch( event.keyCode ) {
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+
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+ case 16: isShiftDown = false; break;
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+ case 17: isCtrlDown = false; break;
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+
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+ }
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+ }
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+
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+ function save() {
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+
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+ window.open( renderer.domElement.toDataURL('image/png'), 'mywindow' );
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+
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+ }
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+
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+ function loop() {
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+
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+ if ( isShiftDown ) {
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+
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+ theta += mouse2D.x * 3;
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+
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+ }
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+
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+ mouse3D = projector.unprojectVector( mouse2D.clone(), camera );
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+ ray.direction = mouse3D.subSelf( camera.position ).normalize();
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+
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+ var intersects = ray.intersectScene( scene );
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+
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+ // console.log( intersects );
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+
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+ if ( intersects.length > 0 ) {
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+
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+ if ( intersects[ 0 ].face != rollOveredFace ) {
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+
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+ if ( rollOveredFace ) rollOveredFace.material = [];
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+ rollOveredFace = intersects[ 0 ].face;
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+ rollOveredFace.material = [ new THREE.MeshColorFillMaterial( 0xff0000, 0.5 ) ];
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+ }
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+ } else if ( rollOveredFace ) {
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+
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+ rollOveredFace.material = [];
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+ rollOveredFace = null;
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+
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+ }
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+
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+ camera.position.x = 1400 * Math.sin( theta * Math.PI / 360 );
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+ camera.position.z = 1400 * Math.cos( theta * Math.PI / 360 );
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+
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+ renderer.render( scene, camera );
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+ stats.update();
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+ }
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+
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+ </script>
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+
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+ </body>
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+</html>
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Mr.doob