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


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js ar - paint</title>
		<meta charset="utf-8">
		<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no">
		<link type="text/css" rel="stylesheet" href="main.css">
	</head>
	<body>

		<div id="info">
			<a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> ar - paint
		</div>

		<script type="module">

			import * as THREE from '../build/three.module.js';
			import { TubePainter } from './jsm/misc/TubePainter.js';
			import { ARButton } from './jsm/webxr/ARButton.js';

			var container;
			var camera, scene, renderer;
			var controller, painter;

			var up = new THREE.Vector3( 0, 1, 0 );

			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="https://threejs.org" target="_blank" rel="noopener">three.js</a> ar - paint<br/>Enable chrome://flags/#webxr-ar-module<br/>(Chrome 80+)';
				container.appendChild( info );

				scene = new THREE.Scene();

				camera = new THREE.PerspectiveCamera( 70, window.innerWidth / window.innerHeight, 0.01, 20 );

				//

				renderer = new THREE.WebGLRenderer( { antialias: true, alpha: true } );
				renderer.setPixelRatio( window.devicePixelRatio );
				renderer.setSize( window.innerWidth, window.innerHeight );
				renderer.xr.enabled = true;
				container.appendChild( renderer.domElement );

				//

				document.body.appendChild( ARButton.createButton( renderer ) );

				// model

				var light = new THREE.HemisphereLight( 0xffffff, 0xbbbbff, 1 );
				light.position.set( 0, 1, 0 );
				scene.add( light );

				//

				painter = new TubePainter();
				painter.setSize( 0.4 );
				painter.mesh.material.side = THREE.DoubleSide;
				scene.add( painter.mesh );

				//

				function onSelectStart() {

					this.userData.isSelecting = true;
					this.userData.skipFrames = 2;

				}

				function onSelectEnd() {

					this.userData.isSelecting = false;

				}

				controller = renderer.xr.getController( 0 );
				controller.addEventListener( 'selectstart', onSelectStart );
				controller.addEventListener( 'selectend', onSelectEnd );
				controller.userData.points = [ new THREE.Vector3(), new THREE.Vector3() ];
				controller.userData.matrices = [ new THREE.Matrix4(), new THREE.Matrix4() ];
				controller.userData.skipFrames = 0;
				scene.add( controller );

				//

				window.addEventListener( 'resize', onWindowResize, false );

			}

			function onWindowResize() {

				camera.aspect = window.innerWidth / window.innerHeight;
				camera.updateProjectionMatrix();

				renderer.setSize( window.innerWidth, window.innerHeight );

			}

			//

			function handleController( controller ) {

				var userData = controller.userData;

				var point1 = userData.points[ 0 ];
				var point2 = userData.points[ 1 ];

				var matrix1 = userData.matrices[ 0 ];
				var matrix2 = userData.matrices[ 1 ];

				point1.set( 0, 0, - 0.2 ).applyMatrix4( controller.matrixWorld );
				matrix1.lookAt( point2, point1, up );

				if ( userData.isSelecting === true ) {

					if ( userData.skipFrames >= 0 ) {

						// TODO(mrdoob) Revisit this

						userData.skipFrames --;

					} else {

						var count = painter.mesh.geometry.drawRange.count;

						painter.stroke( point1, point2, matrix1, matrix2 );

						painter.updateGeometry( count, painter.mesh.geometry.drawRange.count );

					}

				}

				point2.copy( point1 );
				matrix2.copy( matrix1 );

			}

			function animate() {

				renderer.setAnimationLoop( render );

			}

			function render() {

				handleController( controller );

				renderer.render( scene, camera );

			}

		</script>
	</body>
</html>