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

		<div class="desc">A geometric line segment represented by a start and end point.</div>


		<h2>Constructor</h2>


		<h3>[name]([page:Vector3 start], [page:Vector3 end])</h3>
		<div>
		start -- [page:Vector3] Start of the line segment<br />
		end -- [page:Vector3] End of the line segment
		</div>
		<div>
		The start and end vectors default to origin vectors if none are set.
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		<h2>Properties</h2>


		<h3>.[page:Vector3 start]</h3>

		<h3>.[page:Vector3 end]</h3>

		<h2>Methods</h2>


		<h3>.set([page:Vector3 start], [page:Vector3 end]) [page:Line3]</h3>
		<div>
		start -- [page:Vector3] <br />
		end -- [page:Vector3]
		</div>
		<div>
		Sets the start and end values by copying the provided vectors.
		</div>

		<h3>.copy([page:Line3 line]) [page:Line3]</h3>
		<div>
		line -- [page:Line3]
		</div>
		<div>
		Copies the passed line's start and end vectors to this line.
		</div>

		<h3>.clone() [page:Line3]</h3>
		<div>
		Return a new copy of this [page:Line3].
		</div>

		<h3>.equals([page:Line3 line]) [page:Boolean]</h3>
		<div>
		line -- [page:Line3]
		</div>
		<div>

		<h3>.distance() [page:Float]</h3>
		<div>
		Returns the length of the line segment.
		</div>
		Returns true if both line's start and end points are equal.
		</div>
		
		<h3>.distanceSq() [page:Float]</h3>
		<div>
		Returns the line segment's length squared.
		</div>

		<h3>.applyMatrix4([page:Matrix4 matrix]) [page:Line3 this]</h3>
		<div>
		matrix -- [page:Matrix4]
		</div>
		<div>
		Apply a matrix transform to the line segment.
		</div>

		<h3>.at([page:Float t], [page:Vector3 optionalTarget]) [page:Vector]</h3>
		<div>
		t -- [page:Float] Use values 0-1 to return a result on the line segment. <br />
		optionalTarget -- [page:Vector] Optional target to set the result.
		</div>
		<div>
		Return a vector at a certain position along the line. When t = 0, it returns the start vector, and when t=1 it returns the end vector.
		</div>
		
		<h3>.center([page:Vector3 optionalTarget]) [page:Vector3]</h3>
		<div>
		optionalTarget -- [page:Vector3] Optional target to set the result.
		</div>
		<div>
		Return the center of the line segment.
		</div>

		<h3>.delta([page:Vector3 optionalTarget]) [page:Vector3]</h3>
		<div>
		optionalTarget -- [page:Vector3] Optional target to set the result.
		</div>
		<div>
		Returns the delta vector of the line segment, or the end vector minus the start vector.
		</div>

		<h3>.closestPointToPoint([page:Vector3 point], [page:Boolean clampToLine], [page:Vector3 optionalTarget]) [page:Vector3]</h3>
		<div>
		point -- [page:Vector3] <br />
		clampToLine -- [page:Boolean] <br />
		optionalTarget -- [page:Vector3] Optional target to set the result.
		</div>
		<div>
		Returns the closets point on the line. If clamp to line is true, then the returned value will be clamped to the line segment.
		</div>

		<h3>.closestPointToPointParameter([page:Vector3 point], [page:Boolean clampToLine]) [page:Float]</h3>
		<div>
		point -- [page:Vector3] <br />
		clampToLine -- [page:Boolean]
		</div>
		<div>
		Returns a point parameter based on the closest point as projected on the line segement. If clamp to line is true, then the returned value will be between 0 and 1.
		</div>

		<h2>Source</h2>

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