javascript
/
three.js
镜像自地址 https://github.com/tazdij/three.js.git


			
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							<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js webgl - geometry - shapes</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.min.js"></script>
		<script src="js/libs/stats.min.js"></script>

		<script>

			var container, stats;

			var camera, scene, renderer;

			var group, text, plane;

			var targetRotation = 0;
			var targetRotationOnMouseDown = 0;

			var mouseX = 0;
			var mouseXOnMouseDown = 0;

			var windowHalfX = window.innerWidth / 2;
			var windowHalfY = window.innerHeight / 2;

			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 = 'Simple procedurally generated 3D shapes example by <a href="http://www.lab4games.net/zz85/blog">zz85</a><br/>Drag to spin';
				container.appendChild( info );

				camera = new THREE.PerspectiveCamera( 50, window.innerWidth / window.innerHeight, 1, 1000 );
				camera.position.set( 0, 150, 500 );

				scene = new THREE.Scene();

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

				group = new THREE.Object3D();
				group.position.y = 50;
				scene.add( group );

				function addShape( shape, extrudeSettings, color, x, y, z, rx, ry, rz, s ) {

					var points = shape.createPointsGeometry();
					var spacedPoints = shape.createSpacedPointsGeometry( 100 );

					// flat shape

					var geometry = new THREE.ShapeGeometry( shape );

					var mesh = THREE.SceneUtils.createMultiMaterialObject( geometry, [ new THREE.MeshLambertMaterial( { color: color } ), new THREE.MeshBasicMaterial( { color: 0x000000, wireframe: true, transparent: true } ) ] );
					mesh.position.set( x, y, z - 125 );
					mesh.rotation.set( rx, ry, rz );
					mesh.scale.set( s, s, s );
					group.add( mesh );

					// 3d shape

					var geometry = new THREE.ExtrudeGeometry( shape, extrudeSettings );

					var mesh = THREE.SceneUtils.createMultiMaterialObject( geometry, [ new THREE.MeshLambertMaterial( { color: color } ), new THREE.MeshBasicMaterial( { color: 0x000000, wireframe: true, transparent: true } ) ] );
					mesh.position.set( x, y, z - 75 );
					mesh.rotation.set( rx, ry, rz );
					mesh.scale.set( s, s, s );
					group.add( mesh );

					// solid line

					var line = new THREE.Line( points, new THREE.LineBasicMaterial( { color: color, linewidth: 2 } ) );
					line.position.set( x, y, z + 25 );
					line.rotation.set( rx, ry, rz );
					line.scale.set( s, s, s );
					group.add( line );

					// transparent line from real points

					var line = new THREE.Line( points, new THREE.LineBasicMaterial( { color: color, opacity: 0.5 } ) );
					line.position.set( x, y, z + 75 );
					line.rotation.set( rx, ry, rz );
					line.scale.set( s, s, s );
					group.add( line );

					// vertices from real points

					var pgeo = points.clone();
					var particles = new THREE.PointCloud( pgeo, new THREE.PointCloudMaterial( { color: color, size: 2, opacity: 0.75 } ) );
					particles.position.set( x, y, z + 75 );
					particles.rotation.set( rx, ry, rz );
					particles.scale.set( s, s, s );
					group.add( particles );

					// transparent line from equidistance sampled points

					var line = new THREE.Line( spacedPoints, new THREE.LineBasicMaterial( { color: color, opacity: 0.2 } ) );
					line.position.set( x, y, z + 125 );
					line.rotation.set( rx, ry, rz );
					line.scale.set( s, s, s );
					group.add( line );

					// equidistance sampled points

					var pgeo = spacedPoints.clone();
					var particles2 = new THREE.PointCloud( pgeo, new THREE.PointCloudMaterial( { color: color, size: 2, opacity: 0.5 } ) );
					particles2.position.set( x, y, z + 125 );
					particles2.rotation.set( rx, ry, rz );
					particles2.scale.set( s, s, s );
					group.add( particles2 );

				}


				// California

				var californiaPts = [];

				californiaPts.push( new THREE.Vector2 ( 610, 320 ) );
				californiaPts.push( new THREE.Vector2 ( 450, 300 ) );
				californiaPts.push( new THREE.Vector2 ( 392, 392 ) );
				californiaPts.push( new THREE.Vector2 ( 266, 438 ) );
				californiaPts.push( new THREE.Vector2 ( 190, 570 ) );
				californiaPts.push( new THREE.Vector2 ( 190, 600 ) );
				californiaPts.push( new THREE.Vector2 ( 160, 620 ) );
				californiaPts.push( new THREE.Vector2 ( 160, 650 ) );
				californiaPts.push( new THREE.Vector2 ( 180, 640 ) );
				californiaPts.push( new THREE.Vector2 ( 165, 680 ) );
				californiaPts.push( new THREE.Vector2 ( 150, 670 ) );
				californiaPts.push( new THREE.Vector2 (  90, 737 ) );
				californiaPts.push( new THREE.Vector2 (  80, 795 ) );
				californiaPts.push( new THREE.Vector2 (  50, 835 ) );
				californiaPts.push( new THREE.Vector2 (  64, 870 ) );
				californiaPts.push( new THREE.Vector2 (  60, 945 ) );
				californiaPts.push( new THREE.Vector2 ( 300, 945 ) );
				californiaPts.push( new THREE.Vector2 ( 300, 743 ) );
				californiaPts.push( new THREE.Vector2 ( 600, 473 ) );
				californiaPts.push( new THREE.Vector2 ( 626, 425 ) );
				californiaPts.push( new THREE.Vector2 ( 600, 370 ) );
				californiaPts.push( new THREE.Vector2 ( 610, 320 ) );

				var californiaShape = new THREE.Shape( californiaPts );


				// Triangle

				var triangleShape = new THREE.Shape();
				triangleShape.moveTo(  80, 20 );
				triangleShape.lineTo(  40, 80 );
				triangleShape.lineTo( 120, 80 );
				triangleShape.lineTo(  80, 20 ); // close path


				// Heart

				var x = 0, y = 0;

				var heartShape = new THREE.Shape(); // From http://blog.burlock.org/html5/130-paths

				heartShape.moveTo( x + 25, y + 25 );
				heartShape.bezierCurveTo( x + 25, y + 25, x + 20, y, x, y );
				heartShape.bezierCurveTo( x - 30, y, x - 30, y + 35,x - 30,y + 35 );
				heartShape.bezierCurveTo( x - 30, y + 55, x - 10, y + 77, x + 25, y + 95 );
				heartShape.bezierCurveTo( x + 60, y + 77, x + 80, y + 55, x + 80, y + 35 );
				heartShape.bezierCurveTo( x + 80, y + 35, x + 80, y, x + 50, y );
				heartShape.bezierCurveTo( x + 35, y, x + 25, y + 25, x + 25, y + 25 );


				// Square

				var sqLength = 80;

				var squareShape = new THREE.Shape();
				squareShape.moveTo( 0,0 );
				squareShape.lineTo( 0, sqLength );
				squareShape.lineTo( sqLength, sqLength );
				squareShape.lineTo( sqLength, 0 );
				squareShape.lineTo( 0, 0 );


				// Rectangle

				var rectLength = 120, rectWidth = 40;

				var rectShape = new THREE.Shape();
				rectShape.moveTo( 0,0 );
				rectShape.lineTo( 0, rectWidth );
				rectShape.lineTo( rectLength, rectWidth );
				rectShape.lineTo( rectLength, 0 );
				rectShape.lineTo( 0, 0 );


				// Rounded rectangle

				var roundedRectShape = new THREE.Shape();

				( function roundedRect( ctx, x, y, width, height, radius ){

					ctx.moveTo( x, y + radius );
					ctx.lineTo( x, y + height - radius );
					ctx.quadraticCurveTo( x, y + height, x + radius, y + height );
					ctx.lineTo( x + width - radius, y + height) ;
					ctx.quadraticCurveTo( x + width, y + height, x + width, y + height - radius );
					ctx.lineTo( x + width, y + radius );
					ctx.quadraticCurveTo( x + width, y, x + width - radius, y );
					ctx.lineTo( x + radius, y );
					ctx.quadraticCurveTo( x, y, x, y + radius );

				} )( roundedRectShape, 0, 0, 50, 50, 20 );


				// Circle

				var circleRadius = 40;
				var circleShape = new THREE.Shape();
				circleShape.moveTo( 0, circleRadius );
				circleShape.quadraticCurveTo( circleRadius, circleRadius, circleRadius, 0 );
				circleShape.quadraticCurveTo( circleRadius, -circleRadius, 0, -circleRadius );
				circleShape.quadraticCurveTo( -circleRadius, -circleRadius, -circleRadius, 0 );
				circleShape.quadraticCurveTo( -circleRadius, circleRadius, 0, circleRadius );


				// Fish

				x = y = 0;

				var fishShape = new THREE.Shape();

				fishShape.moveTo(x,y);
				fishShape.quadraticCurveTo(x + 50, y - 80, x + 90, y - 10);
				fishShape.quadraticCurveTo(x + 100, y - 10, x + 115, y - 40);
				fishShape.quadraticCurveTo(x + 115, y, x + 115, y + 40);
				fishShape.quadraticCurveTo(x + 100, y + 10, x + 90, y + 10);
				fishShape.quadraticCurveTo(x + 50, y + 80, x, y);


				// Arc circle

				var arcShape = new THREE.Shape();
				arcShape.moveTo( 50, 10 );
				arcShape.absarc( 10, 10, 40, 0, Math.PI*2, false );

				var holePath = new THREE.Path();
				holePath.moveTo( 20, 10 );
				holePath.absarc( 10, 10, 10, 0, Math.PI*2, true );
				arcShape.holes.push( holePath );


				// Smiley

				var smileyShape = new THREE.Shape();
				smileyShape.moveTo( 80, 40 );
				smileyShape.absarc( 40, 40, 40, 0, Math.PI*2, false );

				var smileyEye1Path = new THREE.Path();
				smileyEye1Path.moveTo( 35, 20 );
				// smileyEye1Path.absarc( 25, 20, 10, 0, Math.PI*2, true );
				smileyEye1Path.absellipse( 25, 20, 10, 10, 0, Math.PI*2, true );

				smileyShape.holes.push( smileyEye1Path );

				var smileyEye2Path = new THREE.Path();
				smileyEye2Path.moveTo( 65, 20 );
				smileyEye2Path.absarc( 55, 20, 10, 0, Math.PI*2, true );
				smileyShape.holes.push( smileyEye2Path );

				var smileyMouthPath = new THREE.Path();
				// ugly box mouth
				// smileyMouthPath.moveTo( 20, 40 );
				// smileyMouthPath.lineTo( 60, 40 );
				// smileyMouthPath.lineTo( 60, 60 );
				// smileyMouthPath.lineTo( 20, 60 );
				// smileyMouthPath.lineTo( 20, 40 );

				smileyMouthPath.moveTo( 20, 40 );
				smileyMouthPath.quadraticCurveTo( 40, 60, 60, 40 );
				smileyMouthPath.bezierCurveTo( 70, 45, 70, 50, 60, 60 );
				smileyMouthPath.quadraticCurveTo( 40, 80, 20, 60 );
				smileyMouthPath.quadraticCurveTo( 5, 50, 20, 40 );

				smileyShape.holes.push( smileyMouthPath );


				// Spline shape + path extrusion

				var splinepts = [];
				splinepts.push( new THREE.Vector2 ( 350, 100 ) );
				splinepts.push( new THREE.Vector2 ( 400, 450 ) );
				splinepts.push( new THREE.Vector2 ( -140, 350 ) );
				splinepts.push( new THREE.Vector2 ( 0, 0 ) );

				var splineShape = new THREE.Shape();
				splineShape.moveTo( 0, 0 );
				splineShape.splineThru( splinepts );

				// TODO 3d path?

				var apath = new THREE.SplineCurve3();
				apath.points.push(new THREE.Vector3(-50, 150, 10));
				apath.points.push(new THREE.Vector3(-20, 180, 20));
				apath.points.push(new THREE.Vector3(40, 220, 50));
				apath.points.push(new THREE.Vector3(200, 290, 100));


				var extrudeSettings = { amount: 20 }; // bevelSegments: 2, steps: 2 , bevelSegments: 5, bevelSize: 8, bevelThickness:5

				// addShape( shape, color, x, y, z, rx, ry,rz, s );

				addShape( californiaShape, extrudeSettings, 0xffaa00, -300, -100, 0, 0, 0, 0, 0.25 );

				extrudeSettings.bevelEnabled = true;
				extrudeSettings.bevelSegments = 2;
				extrudeSettings.steps = 2;

				addShape( triangleShape, extrudeSettings, 0xffee00, -180, 0, 0, 0, 0, 0, 1 );
				addShape( roundedRectShape, extrudeSettings, 0x005500, -150, 150, 0, 0, 0, 0, 1 );
				addShape( squareShape, extrudeSettings, 0x0055ff, 150, 100, 0, 0, 0, 0, 1 );
				addShape( heartShape, extrudeSettings, 0xff1100, 60, 100, 0, 0, 0, Math.PI, 1 );
				addShape( circleShape, extrudeSettings, 0x00ff11, 120, 250, 0, 0, 0, 0, 1 );
				addShape( fishShape, extrudeSettings, 0x222222, -60, 200, 0, 0, 0, 0, 1 );
				addShape( smileyShape, extrudeSettings, 0xee00ff, -200, 250, 0, 0, 0, Math.PI, 1 );
				addShape( arcShape, extrudeSettings, 0xbb4422, 150, 0, 0, 0, 0, 0, 1 );

				extrudeSettings.extrudePath = apath;
				extrudeSettings.bevelEnabled = false;
				extrudeSettings.steps = 20;

				addShape( splineShape, extrudeSettings, 0x888888, -50, -100, -50, 0, 0, 0, 0.2 );

				//

				renderer = new THREE.WebGLRenderer( { antialias: true } );
				renderer.setClearColor( 0xf0f0f0 );
				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( 'mousedown', onDocumentMouseDown, false );
				document.addEventListener( 'touchstart', onDocumentTouchStart, false );
				document.addEventListener( 'touchmove', onDocumentTouchMove, false );

				//

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

			}

			function onWindowResize() {

				windowHalfX = window.innerWidth / 2;
				windowHalfY = window.innerHeight / 2;

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

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

			}

			//

			function onDocumentMouseDown( event ) {

				event.preventDefault();

				document.addEventListener( 'mousemove', onDocumentMouseMove, false );
				document.addEventListener( 'mouseup', onDocumentMouseUp, false );
				document.addEventListener( 'mouseout', onDocumentMouseOut, false );

				mouseXOnMouseDown = event.clientX - windowHalfX;
				targetRotationOnMouseDown = targetRotation;

			}

			function onDocumentMouseMove( event ) {

				mouseX = event.clientX - windowHalfX;

				targetRotation = targetRotationOnMouseDown + ( mouseX - mouseXOnMouseDown ) * 0.02;

			}

			function onDocumentMouseUp( event ) {

				document.removeEventListener( 'mousemove', onDocumentMouseMove, false );
				document.removeEventListener( 'mouseup', onDocumentMouseUp, false );
				document.removeEventListener( 'mouseout', onDocumentMouseOut, false );

			}

			function onDocumentMouseOut( event ) {

				document.removeEventListener( 'mousemove', onDocumentMouseMove, false );
				document.removeEventListener( 'mouseup', onDocumentMouseUp, false );
				document.removeEventListener( 'mouseout', onDocumentMouseOut, false );

			}

			function onDocumentTouchStart( event ) {

				if ( event.touches.length == 1 ) {

					event.preventDefault();

					mouseXOnMouseDown = event.touches[ 0 ].pageX - windowHalfX;
					targetRotationOnMouseDown = targetRotation;

				}

			}

			function onDocumentTouchMove( event ) {

				if ( event.touches.length == 1 ) {

					event.preventDefault();

					mouseX = event.touches[ 0 ].pageX - windowHalfX;
					targetRotation = targetRotationOnMouseDown + ( mouseX - mouseXOnMouseDown ) * 0.05;

				}

			}

			//

			function animate() {

				requestAnimationFrame( animate );

				render();
				stats.update();

			}

			function render() {

				group.rotation.y += ( targetRotation - group.rotation.y ) * 0.05;
				renderer.render( scene, camera );

			}

		</script>

	</body>
</html>