javascript
/
three.js
espejo de https://github.com/tazdij/three.js.git


			
				
					
						
						
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							<!DOCTYPE HTML>
<html lang="en">
	<head>
		<title>three.js - interactive - voxel painter - webgl</title>
		<meta charset="utf-8">
		<style type="text/css">
			body {
				font-family: Monospace;
				background-color: #f0f0f0;
				margin: 0px;
				overflow: hidden;
			}
		</style>
	</head>
	<body>

		<script type="text/javascript" src="../build/Three.js"></script>

		<script type="text/javascript" src="../src/extras/primitives/Cube.js"></script>
		<script type="text/javascript" src="../src/extras/primitives/Plane.js"></script>
		<script type="text/javascript" src="../src/extras/ImageUtils.js"></script>

		<script type="text/javascript" src="js/Stats.js"></script>

		<script type="text/javascript">

			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();
			setInterval( loop, 1000 / 60 );

			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 Cube( 50, 50, 50 );
				rollOverMaterial = new THREE.MeshBasicMaterial( { color: 0xff0000, opacity: 0.5 } );
				rollOverMesh = new THREE.Mesh( rollOverGeo, rollOverMaterial );
				scene.addObject( rollOverMesh );
				

				// cubes
				
				cubeGeo = new Cube( 50, 50, 50 );
				cubeMaterial = new THREE.MeshLambertMaterial( { color: 0x00ff80, opacity: 1, shading: THREE.FlatShading, map: 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 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();
				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.rotationMatrix.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 );
							renderer.removeObject( scene, intersector.object );

						}

					// create cube
					
					} else {

						intersector = getRealIntersector( intersects );						
						setVoxelPosition( intersector );

						var voxel = new THREE.Mesh( cubeGeo, cubeMaterial );
						voxel.position.copy( voxelPosition );
						
						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 loop() {

				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 );
				stats.update();
			}

		</script>

	</body>
</html>