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[page:Object3D] → [page:Line] →
<h1>[name]</h1>
<p class="desc">The PolarGridHelper is an object to define polar grids. Grids are two-dimensional arrays of lines.</p>
<h2>Example</h2>
<code>var radius = 10;
var radials = 16;
var circles = 8;
var divisions = 64;
var helper = new THREE.PolarGridHelper( radius, radials, circles, divisions );
scene.add( helper );
</code>
[example:webgl_helpers Example using various helpers]
<h2>Constructor</h2>
<h3>[name]( [param:Number radius], [param:Number radials], [param:Number circles], [param:Number divisions], [param:Color color1], [param:Color color2] )</h3>
<p>
radius -- The radius of the polar grid. This can be any positive number. Default is 10.<br />
radials -- The number of radial lines. This can be any positive integer. Default is 16.<br />
circles -- The number of circles. This can be any positive integer. Default is 8.<br />
divisions -- The number of line segments used for each circle. This can be any positive integer that is 3 or greater. Default is 64.<br />
color1 -- The first color used for grid elements. This can be a [page:Color], a hexadecimal value and an CSS-Color name. Default is 0x444444 <br />
color2 -- The second color used for grid elements. This can be a [page:Color], a hexadecimal value and an CSS-Color name. Default is 0x888888
</p>
<p>
Creates a new [name] of radius 'radius' with 'radials' number of radials and 'circles' number of circles, where each circle is smoothed into 'divisions' number of line segments. Colors are optional.
</p>
<h2>Source</h2>
<p>
[link:https://github.com/mrdoob/three.js/blob/master/src/[path].js src/[path].js]
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