javascript
/
three.js
镜像来自 https://github.com/tazdij/three.js.git


			
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							<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js webgl - geometry - extrude splines</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>
		<canvas id="debug" style="position:absolute; left:100px"></canvas>

		<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 = 'Shapes Extrusion via Spline path<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 addGeometry( geometry, color, x, y, z, rx, ry, rz, s ) {

					// 3d shape

					var mesh = THREE.SceneUtils.createMultiMaterialObject( geometry, [ new THREE.MeshLambertMaterial( { color: color, opacity: 0.2, transparent: true } ), new THREE.MeshBasicMaterial( { color: 0x000000, wireframe: true,  opacity: 0.3 } ) ] );

					mesh.position.set( x, y, z - 75 );
					// mesh.rotation.set( rx, ry, rz );
					mesh.scale.set( s, s, s );

					if ( geometry.debug ) mesh.add( geometry.debug );

					group.add( mesh );

				}

				var extrudeSettings = { amount: 200,  bevelEnabled: true, bevelSegments: 2, steps: 150 }; // bevelSegments: 2, steps: 2 , bevelSegments: 5, bevelSize: 8, bevelThickness:5,

				// var extrudePath = new THREE.Path();

				// extrudePath.moveTo( 0, 0 );
				// extrudePath.lineTo( 10, 10 );
				// extrudePath.quadraticCurveTo( 80, 60, 160, 10 );
				// extrudePath.quadraticCurveTo( 240, -40, 320, 10 );


				extrudeSettings.bevelEnabled = false;

				var extrudeBend = new THREE.SplineCurve3( //Closed
				[

				  new THREE.Vector3( 30, 12, 83),
				  new THREE.Vector3( 40, 20, 67),
				  new THREE.Vector3( 60, 40, 99),
				  new THREE.Vector3( 10, 60, 49),
				  new THREE.Vector3( 25, 80, 40)

				]);

			var pipeSpline = new THREE.SplineCurve3([
				new THREE.Vector3(0, 10, -10), new THREE.Vector3(10, 0, -10), new THREE.Vector3(20, 0, 0), new THREE.Vector3(30, 0, 10), new THREE.Vector3(30, 0, 20), new THREE.Vector3(20, 0, 30), new THREE.Vector3(10, 0, 30), new THREE.Vector3(0, 0, 30), new THREE.Vector3(-10, 10, 30), new THREE.Vector3(-10, 20, 30), new THREE.Vector3(0, 30, 30), new THREE.Vector3(10, 30, 30), new THREE.Vector3(20, 30, 15), new THREE.Vector3(10, 30, 10), new THREE.Vector3(0, 30, 10), new THREE.Vector3(-10, 20, 10), new THREE.Vector3(-10, 10, 10), new THREE.Vector3(0, 0, 10), new THREE.Vector3(10, -10, 10), new THREE.Vector3(20, -15, 10), new THREE.Vector3(30, -15, 10), new THREE.Vector3(40, -15, 10), new THREE.Vector3(50, -15, 10), new THREE.Vector3(60, 0, 10), new THREE.Vector3(70, 0, 0), new THREE.Vector3(80, 0, 0), new THREE.Vector3(90, 0, 0), new THREE.Vector3(100, 0, 0)]
			);

			var sampleClosedSpline = new THREE.ClosedSplineCurve3([
				new THREE.Vector3(0, -40, -40),
				new THREE.Vector3(0, 40, -40),
				new THREE.Vector3(0, 140, -40),
				new THREE.Vector3(0, 40, 40),
				new THREE.Vector3(0, -40, 40),
			]);

			var randomPoints = [];

			for ( var i = 0; i < 10; i ++ ) {

				randomPoints.push( new THREE.Vector3(Math.random() * 200,Math.random() * 200,Math.random() * 200 ) );

			}

			var randomSpline =  new THREE.SplineCurve3( randomPoints );

			extrudeSettings.extrudePath = randomSpline; // extrudeBend sampleClosedSpline pipeSpline randomSpline

			// Circle

			var circleRadius = 4;
			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);

			var rectLength = 12, rectWidth = 4;

			var rectShape = new THREE.Shape();

			rectShape.moveTo( -rectLength/2, -rectWidth/2 );
			rectShape.lineTo( -rectLength/2, rectWidth/2 );
			rectShape.lineTo( rectLength/2, rectWidth/2 );
			rectShape.lineTo( rectLength/2, -rectLength/2 );
			rectShape.lineTo( -rectLength/2, -rectLength/2 );


			var pts = [], starPoints = 5, l;

			for ( i = 0; i < starPoints * 2; i ++ ) {

				if ( i % 2 == 1 ) {

					l = 5;

				} else {

					l = 10;

				}

				var a = i / starPoints * Math.PI;
				pts.push( new THREE.Vector2 ( Math.cos( a ) * l, Math.sin( a ) * l ) );

			}

			var starShape = new THREE.Shape( pts );

			// Smiley

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

			var smileyEye1Path = new THREE.Path();
			smileyEye1Path.moveTo( 35, 20 );
			smileyEye1Path.arc( 25, 20, 10, 0, Math.PI*2, true );
			smileyShape.holes.push( smileyEye1Path );

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

			var smileyMouthPath = new THREE.Path();

			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 );

			var circle3d = starShape.extrude( extrudeSettings ); //circleShape rectShape smileyShape starShape
			// var circle3d = new THREE.ExtrudeGeometry(circleShape, extrudeBend, extrudeSettings );

			var tube = new THREE.TubeGeometry(extrudeSettings.extrudePath, 150, 4, 5, false, true);
			// new THREE.TubeGeometry(extrudePath, segments, 2, radiusSegments, closed2, debug);


			addGeometry( circle3d, 0xff1111,  -100,  0, 0,     0, 0, 0, 1 );
			addGeometry( tube, 0x00ff11,  0,  0, 0,     0, 0, 0, 1 );
			console.log(tube);

			//

			renderer = new THREE.WebGLRenderer( { antialias: true } );
			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>