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<!DOCTYPE html>
<html lang="en">
<head>
<title>three.js canvas - interactive - voxel painter</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="../build/three.js"></script>
<script src="js/renderers/Projector.js"></script>
<script src="js/renderers/CanvasRenderer.js"></script>
<script>
var container;
var camera, scene, renderer;
var plane;
var mouse, raycaster, isShiftDown = false;
var cubeGeometry = new THREE.BoxGeometry( 50, 50, 50 );
var cubeMaterial = new THREE.MeshLambertMaterial( { color: 0x00ff80, overdraw: 0.5 } );
var objects = [];
init();
render();
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://threejs.org" target="_blank">three.js</a> - voxel painter<br><strong>click</strong>: add voxel, <strong>shift + click</strong>: remove voxel, <a href="javascript:save()">save .png</a>';
container.appendChild( info );
camera = new THREE.PerspectiveCamera( 40, window.innerWidth / window.innerHeight, 1, 10000 );
camera.position.set( 500, 800, 1300 );
camera.lookAt( new THREE.Vector3() );
scene = new THREE.Scene();
// Grid
var size = 500, step = 50;
var geometry = new THREE.Geometry();
for ( var i = - size; i <= size; i += step ) {
geometry.vertices.push( new THREE.Vector3( - size, 0, i ) );
geometry.vertices.push( new THREE.Vector3( size, 0, i ) );
geometry.vertices.push( new THREE.Vector3( i, 0, - size ) );
geometry.vertices.push( new THREE.Vector3( i, 0, size ) );
}
var material = new THREE.LineBasicMaterial( { color: 0x000000, opacity: 0.2 } );
var line = new THREE.LineSegments( geometry, material );
scene.add( line );
//
raycaster = new THREE.Raycaster();
mouse = new THREE.Vector2();
var geometry = new THREE.PlaneBufferGeometry( 1000, 1000 );
geometry.rotateX( - Math.PI / 2 );
plane = new THREE.Mesh( geometry, new THREE.MeshBasicMaterial( { visible: false } ) );
scene.add( plane );
objects.push( plane );
var material = new THREE.MeshBasicMaterial( { color: 0xff0000, wireframe: true } );
// Lights
var ambientLight = new THREE.AmbientLight( 0x606060 );
scene.add( 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.add( 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.add( directionalLight );
renderer = new THREE.CanvasRenderer();
renderer.setClearColor( 0xf0f0f0 );
renderer.setPixelRatio( window.devicePixelRatio );
renderer.setSize( window.innerWidth, window.innerHeight );
container.appendChild(renderer.domElement);
document.addEventListener( 'mousedown', onDocumentMouseDown, false );
document.addEventListener( 'keydown', onDocumentKeyDown, false );
document.addEventListener( 'keyup', onDocumentKeyUp, false );
//
window.addEventListener( 'resize', onWindowResize, false );
}
function onWindowResize() {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize( window.innerWidth, window.innerHeight );
render();
}
function onDocumentMouseDown( event ) {
event.preventDefault();
mouse.x = ( event.clientX / renderer.domElement.clientWidth ) * 2 - 1;
mouse.y = - ( event.clientY / renderer.domElement.clientHeight ) * 2 + 1;
raycaster.setFromCamera( mouse, camera );
var intersects = raycaster.intersectObjects( objects );
if ( intersects.length > 0 ) {
var intersect = intersects[ 0 ];
if ( isShiftDown ) {
if ( intersect.object != plane ) {
scene.remove( intersect.object );
objects.splice( objects.indexOf( intersect.object ), 1 );
}
} else {
var voxel = new THREE.Mesh( cubeGeometry, cubeMaterial );
voxel.position.copy( intersect.point ).add( intersect.face.normal );
voxel.position.divideScalar( 50 ).floor().multiplyScalar( 50 ).addScalar( 25 );
scene.add( voxel );
objects.push( voxel );
}
render();
}
}
function onDocumentKeyDown( event ) {
switch( event.keyCode ) {
case 16: isShiftDown = true; break;
}
}
function onDocumentKeyUp( event ) {
switch( event.keyCode ) {
case 16: isShiftDown = false; break;
}
}
function save() {
window.open( renderer.domElement.toDataURL('image/png'), 'mywindow' );
return false;
}
function render() {
renderer.render( scene, camera );
}
</script>
</body>
</html>