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125 lines
4.3 KiB
125 lines
4.3 KiB
3 years ago
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="utf-8" />
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<base href="../../../" />
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<script src="page.js"></script>
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<link type="text/css" rel="stylesheet" href="page.css" />
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</head>
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<body>
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<h1>[name]</h1>
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<p class="desc">A geometric line segment represented by a start and end point.</p>
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<h2>Constructor</h2>
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<h3>[name]( [param:Vector3 start], [param:Vector3 end] )</h3>
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<p>
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[page:Vector3 start] - Start of the line segment. Default is `(0, 0, 0)`.<br />
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[page:Vector3 end] - End of the line segment. Default is `(0, 0, 0)`.<br /><br />
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Creates a new [name].
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</p>
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<h2>Properties</h2>
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<h3>[property:Vector3 start]</h3>
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<p>[page:Vector3] representing the start point of the line.</p>
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<h3>[property:Vector3 end]</h3>
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<p>[page:Vector3] representing the end point of the line.</p>
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<h2>Methods</h2>
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<h3>[method:this applyMatrix4]( [param:Matrix4 matrix] )</h3>
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<p>Applies a matrix transform to the line segment.</p>
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<h3>[method:Vector3 at]( [param:Float t], [param:Vector3 target] )</h3>
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<p>
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[page:Float t] - Use values 0-1 to return a position along the line segment. <br />
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[page:Vector3 target] — the result will be copied into this Vector3.<br /><br />
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Returns a vector at a certain position along the line. When [page:Float t] = 0, it returns the start vector,
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and when [page:Float t] = 1 it returns the end vector.<br />
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</p>
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<h3>[method:Line3 clone]()</h3>
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<p>Returns a new [page:Line3] with the same [page:.start start] and [page:.end end] vectors as this one.</p>
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<h3>[method:Vector3 closestPointToPoint]( [param:Vector3 point], [param:Boolean clampToLine], [param:Vector3 target] )</h3>
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<p>
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[page:Vector3 point] - return the closest point on the line to this point.<br />
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[page:Boolean clampToLine] - whether to clamp the returned value to the line segment.<br />
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[page:Vector3 target] — the result will be copied into this Vector3.<br /><br />
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Returns the closets point on the line. If [page:Boolean clampToLine] is true, then the returned value will be
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clamped to the line segment.
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</p>
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<h3>[method:Float closestPointToPointParameter]( [param:Vector3 point], [param:Boolean clampToLine] )</h3>
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<p>
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[page:Vector3 point] - the point for which to return a point parameter. <br />
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[page:Boolean clampToLine] - Whether to clamp the result to the range `[0, 1]`.<br /><br />
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Returns a point parameter based on the closest point as projected on the line segment.
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If [page:Boolean clampToLine] is true, then the returned value will be between 0 and 1.
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</p>
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<h3>[method:this copy]( [param:Line3 line] )</h3>
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<p>Copies the passed line's [page:.start start] and [page:.end end] vectors to this line.</p>
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<h3>[method:Vector3 delta]( [param:Vector3 target] )</h3>
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<p>
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[page:Vector3 target] — the result will be copied into this Vector3.<br /><br />
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Returns the delta vector of the line segment ( [page:.end end] vector minus the [page:.start start] vector).
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</p>
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<h3>[method:Float distance]()</h3>
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<p>Returns the [link:https://en.wikipedia.org/wiki/Euclidean_distance Euclidean distance]
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(straight-line distance) between the line's [page:.start start] and [page:.end end] points.</p>
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<h3>[method:Float distanceSq]()</h3>
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<p>
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Returns the square of the [link:https://en.wikipedia.org/wiki/Euclidean_distance Euclidean distance]
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(straight-line distance) between the line's [page:.start start]
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and [page:.end end] vectors.
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</p>
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<h3>[method:Boolean equals]( [param:Line3 line] )</h3>
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<p>
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[page:Line3 line] - [page:Line3] to compare with this one.<br /><br />
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Returns true if both line's [page:.start start] and [page:.end end] points are equal.
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</p>
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<h3>[method:Vector3 getCenter]( [param:Vector3 target] )</h3>
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<p>
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[page:Vector3 target] — the result will be copied into this Vector3.<br /><br />
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Returns the center of the line segment.
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</p>
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<h3>[method:this set]( [param:Vector3 start], [param:Vector3 end] )</h3>
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<p>
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[page:Vector3 start] - set the [page:.start start point] of the line.<br />
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[page:Vector3 end] - set the [page:.end end point] of the line.<br /><br />
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Sets the start and end values by copying the provided vectors.
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</p>
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<h2>Source</h2>
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<p>
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[link:https://github.com/mrdoob/three.js/blob/master/src/[path].js src/[path].js]
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</p>
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</body>
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</html>
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