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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>
<h1>Draw Mode Constants</h1>
<p class="desc">
These are valid values for [page:Mesh.drawMode], and control how the list of vertices is interpeted once sent to the GPU.
</p>
<h2>Draw Modes</h2>
<code>
THREE.TrianglesDrawMode
</code>
<p>
This is the default, and results in every three consecutive vertices (v0, v1, v2), (v3, v4, v5), ...
being interpreted as a separate triangle. <br />
If the number of vertices is not a multiple of 3, excess vertices are ignored.
</p>
<code>
THREE.TriangleStripDrawMode
</code>
<p>
This will result in a series of triangles connected in a strip, given by (v0, v1, v2), (v2, v1, v3), (v2, v3, v4), ...
so that every subsequent triangle shares two vertices with the previous triangle.
</p>
<code>
THREE.TriangleFanDrawMode
</code>
<p>
This will result in a series of triangles each sharing the first vertex (like a fan),
given by (v0, v1, v2), (v0, v2, v3), (v0, v3, v4), ... <br /><br />
<em>Note:</em> As of [link:https://en.wikipedia.org/wiki/DirectX#DirectX_10 DirectX10], this mode is not supported. As Chrome and Firefox
render WebGL using [link:https://en.wikipedia.org/wiki/ANGLE_(software) ANGLE] on Windows,
internally this mode will be converted to a supported mode, which will likely lead to lowered
performance on those browsers.
</p>
<h2>Usage</h2>
<code>
var geometry = new THREE.BufferGeometry();
var vertices = [];
vertices.push( -10, 10, 0 );
vertices.push( -10, -10, 0 );
vertices.push( 10, -10, 0 );
// ...
geometry.addAttribute( 'position', new THREE.Float32BufferAttribute( vertices, 3 ) );
var material = new THREE.MeshBasicMaterial( { color: 0xffff00 } );
var mesh = new THREE.Mesh( geometry, material );
mesh.drawMode = THREE.TrianglesDrawMode; //default
scene.add( mesh );
</code>
<h2>Source</h2>
<p>
[link:https://github.com/mrdoob/three.js/blob/master/src/constants.js src/constants.js]
</p>
</body>
</html>
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