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update Raycaster documentation

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docs/api/core/Raycaster.html
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<body>
<h1>[name]</h1>
<div class="desc">todo</div>
<div class="desc">
This class makes raycasting easier. Raycasting is used for picking and more.
</div>
<h2>Constructor</h2>
<h3>[name]()</h3>
<h3>[name]( [page:Vector3 origin], [page:Vector3 direction], [page:Float near], [page:Float far] ) {</h3>
<div>
[page:Vector3 origin] — The origin vector where the ray casts from.<br />
[page:Vector3 direction] — The direction vector that gives direction to the ray.<br />
[page:Float near] — All results returned are further away then near. Near can't be negative. Default value is 0.<br />
[page:Float far] — All results returned are closer then far. Far can't be lower then near . Default value is Infinity.
</div>
<div>
This creates a new raycaster object.<br />
</div>
<h2>Properties</h2>
<h3>.[page:Vector3 todo]</h3>
<h3>.[page:Ray ray]</h3>
<div>
The Ray used for the raycasting.
</div>
<h3>.[page:float near]</h3>
<div>
The near factor of the raycaster. This value indicates which objects can be discarded based on the distance.<br />
This value shouldn't be negative and should be smaller then the far property.
</div>
<h3>.[page:float far]</h3>
<div>
The far factor of the raycaster. This value indicates which objects can be discarded based on the distance.<br />
This value shouldn't be negative and should be smaller then the far property.
</div>
<h3>.[page:float precision]</h3>
<div>
The precision factor of the raycaster.
</div>
<h2>Methods</h2>
<h3>.todo( [page:Vector3 todo] )</h3>
<h3>.set( [page:Vector3 origin], [page:Vector3 direction] )</h3>
<div>
[page:Vector3 origin] — The origin vector where the ray casts from.<br />
[page:Vector3 direction] — The direction vector that gives direction to the ray.
</div>
<div>
Updates the ray with a new origin and direction.
</div>
<h3>.intersectObject( [page:Object3D object], [page:Boolean recursive] )</h3>
<div>
[page:Object3D object] — The object to check for intersection with the ray.<br />
[page:Boolean recursive] — If set, it also checks all descendants. Otherwise it only checks intersecton with the object.
</div>
<div>
checks all intersection between the ray and the object with or without the descendants.
</div>
<h3>.intersectObjects( [page:Array objects], [page:Boolean recursive] )</h3>
<div>
[page:Array objects] — The objects to check for intersection with the ray.<br />
[page:Boolean recursive] — If set, it also checks all descendants of the objects. Otherwise it only checks intersecton with the objects.
</div>
<div>
todo — todo<br />
checks all intersection between the ray and the objects with or without the descendants.
</div>
......
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