topical media & game development
mobile-query-three-plugins-rollercoster-examples-webgl-geometry-extrude-shapes.htm / htm
<!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.js"></script>
<script src="../src/extras/core/Curve.js"></script>
<script src="../src/extras/geometries/TubeGeometry.js"></script>
<script src="../src/extras/geometries/ExtrudeGeometry.js"></script>
<script src="js/Stats.js"></script>
<script>
var container, stats;
var camera, scene, renderer;
var 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 );
scene = new THREE.Scene();
camera = new THREE.PerspectiveCamera( 50, window.innerWidth / window.innerHeight, 1, 1000 );
camera.position.set( 0, 150, 500 );
scene.add( camera );
var light = new THREE.DirectionalLight( 0xffffff );
light.position.set( 0, 0, 1 );
scene.add( light );
parent = new THREE.Object3D();
parent.position.y = 50;
scene.add( parent );
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);
parent.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 );
}
//
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() {
parent.rotation.y += ( targetRotation - parent.rotation.y ) * 0.05;
renderer.render( scene, camera );
}
</script>
</body>
</html>
(C) Æliens
04/09/2009
You may not copy or print any of this material without explicit permission of the author or the publisher.
In case of other copyright issues, contact the author.