javascript
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three.js
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		<h1>[name]</h1>

		<p class="desc">
			Represents a third-order spherical harmonics (SH). Light probes use this
			class to encode lighting information.
		</p>

		<h2>Constructor</h2>
		<h3>[name]()</h3>
		<p>Creates a new instance of [name].</p>

		<h2>Properties</h2>

		<h3>[property:Array coefficients]</h3>
		<p>
			An array holding the (9) SH coefficients. A single coefficient is
			represented as an instance of [page:Vector3].
		</p>

		<h3>[property:Boolean isSphericalHarmonics3]</h3>
		<p>Read-only flag to check if a given object is of type [name].</p>

		<h2>Methods</h2>

		<h3>[method:this add]( [param:SphericalHarmonics3 sh] )</h3>
		<p>
			[page:SphericalHarmonics3 sh] - The SH to add.<br /><br />

			Adds the given SH to this instance.
		</p>

		<h3>
			[method:this addScaledSH]( [param:SphericalHarmonics3 sh], [param:Number scale] )
		</h3>
		<p>
			[page:SphericalHarmonics3 sh] - The SH to add.<br />
			[page:Number scale] - The scale factor.<br /><br />

			A convenience method for performing [page:.add]() and [page:.scale]() at
			once.
		</p>

		<h3>[method:SphericalHarmonics3 clone]()</h3>
		<p>Returns a new instance of [name] with equal coefficients.</p>

		<h3>[method:this copy]( [param:SphericalHarmonics3 sh] )</h3>
		<p>
			[page:SphericalHarmonics3 sh] - The SH to copy.<br /><br />

			Copies the given SH to this instance.
		</p>

		<h3>[method:Boolean equals]( [param:SphericalHarmonics3 sh] )</h3>
		<p>
			[page:SphericalHarmonics3 sh] - The SH to compare with.<br /><br />

			Returns true if the given SH and this instance have equal coefficients.
		</p>

		<h3>
			[method:this fromArray]( [param:Array array], [param:Number offset] )
		</h3>
		<p>
			[page:Array array] - The array holding the numbers of the SH
			coefficients.<br />
			[page:Number offset] - (optional) The array offset.<br /><br />

			Sets the coefficients of this instance from the given array.
		</p>

		<h3>
			[method:Vector3 getAt]( [param:Vector3 normal], [param:Vector3 target] )
		</h3>
		<p>
			[page:Vector3 normal] - The normal vector (assumed to be unit length).<br />
			[page:Vector3 target] - The result vector.<br /><br />

			Returns the radiance in the direction of the given normal.
		</p>

		<h3>
			[method:Vector3 getIrradianceAt]( [param:Vector3 normal], [param:Vector3 target] )
		</h3>
		<p>
			[page:Vector3 normal] - The normal vector (assumed to be unit length).<br />
			[page:Vector3 target] - The result vector.<br /><br />

			Returns the irradiance (radiance convolved with cosine lobe) in the
			direction of the given normal.
		</p>

		<h3>
			[method:this lerp]( [param:SphericalHarmonics3 sh], [param:Number alpha] )
		</h3>
		<p>
			[page:SphericalHarmonics3 sh] - The SH to interpolate with.<br />
			[page:Number alpha] - The alpha factor.<br /><br />

			Linear interpolates between the given SH and this instance by the given
			alpha factor.
		</p>

		<h3>[method:this scale]( [param:Number scale] )</h3>
		<p>
			[page:Number scale] - The scale factor.<br /><br />

			Scales this SH by the given scale factor.
		</p>

		<h3>[method:this set]( [param:Array coefficients] )</h3>
		<p>
			[page:Array coefficients] - An array of SH coefficients.<br /><br />

			Sets the given SH coefficients to this instance.
		</p>

		<h3>
			[method:Array toArray]( [param:Array array], [param:Number offset] )
		</h3>
		<p>
			[page:Array array] - (optional) The target array.<br />
			[page:Number offset] - (optional) The array offset.<br /><br />

			Returns an array with the coefficients, or copies them into the provided
			array. The coefficients are represented as numbers.
		</p>

		<h3>[method:this zero]()</h3>
		<p>Sets all SH coefficients to `0`.</p>

		<h2>Static Methods</h2>

		<h3>
			[method:undefined getBasisAt]( [param:Vector3 normal], [param:Array shBasis] )
		</h3>
		<p>
			[page:Vector3 normal] - The normal vector (assumed to be unit length).<br />
			[page:Array shBasis] - The resulting SH basis.<br /><br />

			Computes the SH basis for the given normal vector.
		</p>

		<h2>Source</h2>

		<p>
			[link:https://github.com/mrdoob/three.js/blob/master/src/[path].js src/[path].js]
		</p>
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