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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<base href="../../../" />
<script src="list.js"></script>
<script src="page.js"></script>
<link type="text/css" rel="stylesheet" href="page.css" />
</head>
<body>
[page:Geometry] →
<h1>[name]</h1>
<p class="desc">CircleGeometry is a simple shape of Euclidean geometry. It is contructed from a number of triangular segments that are oriented around a central point and extend as far out as a given radius. It is built counter-clockwise from a start angle and a given central angle. It can also be used to create regular polygons, where the number of segments determines the number of sides.
</p>
<iframe id="scene" src="scenes/geometry-browser.html#CircleGeometry"></iframe>
<script>
// iOS iframe auto-resize workaround
if ( /(iPad|iPhone|iPod)/g.test( navigator.userAgent ) ) {
var scene = document.getElementById( 'scene' );
scene.style.width = getComputedStyle( scene ).width;
scene.style.height = getComputedStyle( scene ).height;
scene.setAttribute( 'scrolling', 'no' );
}
</script>
<h2>Example</h2>
<code>
var geometry = new THREE.CircleGeometry( 5, 32 );
var material = new THREE.MeshBasicMaterial( { color: 0xffff00 } );
var circle = new THREE.Mesh( geometry, material );
scene.add( circle );
</code>
<h2>Constructor</h2>
<h3>[name]([param:Float radius], [param:Integer segments], [param:Float thetaStart], [param:Float thetaLength])</h3>
<p>
radius — Radius of the circle, default = 1.<br />
segments — Number of segments (triangles), minimum = 3, default = 8.<br />
thetaStart — Start angle for first segment, default = 0 (three o'clock position).<br />
thetaLength — The central angle, often called theta, of the circular sector. The default is 2*Pi, which makes for a complete circle.
</p>
<h2>Properties</h2>
<p>See the base [page:Geometry] class for common properties.</p>
<h3>[property:Object parameters]</h3>
<p>
An object with a property for each of the constructor parameters. Any modification after instantiation does not change the geometry.
</p>
<h2>Methods</h2>
<p>See the base [page:Geometry] class for common methods.</p>
<h2>Source</h2>
<p>
[link:https://github.com/mrdoob/three.js/blob/master/src/[path].js src/[path].js]
</p>
</body>
</html>
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