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174 lines
4.7 KiB
174 lines
4.7 KiB
<!DOCTYPE html>
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<html lang="zh">
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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">
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Represents an oriented bounding box (OBB) in 3D space.
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</p>
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<h2>Examples</h2>
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<p>
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[example:webgl_math_obb]
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</p>
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<h2>Constructor</h2>
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<h3>[name]( [param:Vector3 center], [param:Vector3 halfSize], [param:Matrix3 rotation] )</h3>
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<p>
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[page:Vector3 center] — The center of the [name]. (optional)<br />
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[page:Vector3 halfSize] — Positive halfwidth extents of the [name] along each axis. (optional)<br />
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[page:Matrix3 rotation] — The rotation of the [name]. (optional)
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</p>
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<p>
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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 center]</h3>
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<p>
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The center of the [name]. Default is *( 0, 0, 0 )*.
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</p>
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<h3>[property:Vector3 halfSize]</h3>
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<p>
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Positive halfwidth extents of the [name] along each axis. Default is *( 0, 0, 0 )*.
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</p>
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<h3>[property:Matrix3 rotation]</h3>
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<p>
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The rotation of the [name]. Default is the identity matrix.
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</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>
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[page:Matrix4 matrix] — A 4x4 transformation matrix.
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</p>
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<p>
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Applies the given transformation matrix to this [name]. This method can be used to transform the
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bounding volume with the world matrix of a 3D object in order to keep both entities in sync.
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</p>
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<h3>[method:Vector3 clampPoint]( [param:Vector3 point], [param:Vector3 clampedPoint] )</h3>
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<p>
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[page:Vector3 point] — The point that should be clamped within the bounds of this [name].<br />
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[page:Matrix3 clampedPoint] — The result will be copied into this vector.
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</p>
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<p>
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Clamps the given point within the bounds of this [name].
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</p>
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<h3>[method:OBB clone]()</h3>
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<p>
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Creates a cloned [name] for this instance.
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</p>
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<h3>[method:Boolean containsPoint]( [param:Vector3 point] )</h3>
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<p>
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[page:Vector3 point] — The point to test.
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</p>
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<p>
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Whether the given point lies within this [name] or not.
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</p>
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<h3>[method:this copy]( [param:OBB obb] )</h3>
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<p>
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[page:OBB obb] — The [name] to copy.
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</p>
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<p>
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Copies the properties of the given [name] to this [name].
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</p>
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<h3>[method:Boolean equals]( [param:OBB obb] )</h3>
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<p>
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[page:OBB obb] — The [name] to test.
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</p>
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<p>
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Whether the given [name] is equal to this [name] or not.
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</p>
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<h3>[method:this fromBox3]( [param:Box3 box3] )</h3>
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<p>
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[page:Box3 box3] — An AABB.
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</p>
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<p>
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Defines an [name] based on the given AABB.
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</p>
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<h3>[method:Vector3 getSize]( [param:Vector3 size] )</h3>
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<p>
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[page:Vector3 size] — The result will be copied into this vector.
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</p>
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<p>
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Returns the size of this [name] into the given vector.
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</p>
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<h3>[method:Boolean intersectsBox3]( [param:Box3 box3] )</h3>
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<p>
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[page:Box3 box3] — The AABB to test.
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</p>
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<p>
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Whether the given AABB intersects this [name] or not.
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</p>
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<h3>[method:Boolean intersectsSphere]( [param:Sphere sphere] )</h3>
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<p>
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[page:Sphere sphere] — The bounding sphere to test.
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</p>
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<p>
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Whether the given bounding sphere intersects this [name] or not.
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</p>
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<h3>[method:Boolean intersectsOBB]( [param:OBB obb], [param:Number epsilon] )</h3>
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<p>
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[page:OBB obb] — The OBB to test.<br />
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[page:Number epsilon] — An optional numeric value to counteract arithmetic errors. Default is *Number.EPSILON*.
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</p>
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<p>
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Whether the given [name] intersects this [name] or not.
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</p>
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<h3>[method:Boolean intersectsRay]( [param:Ray ray] )</h3>
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<p>
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[page:Ray ray] — The ray to test.
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</p>
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<p>
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Whether the given ray intersects this [name] or not.
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</p>
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<h3>[method:Vector3 intersectRay]( [param:Ray ray], [param:Vector3 intersectionPoint] )</h3>
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<p>
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[page:Ray ray] — The ray to test.<br />
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[page:Vector3 intersectionPoint] — The result will be copied into this vector.
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</p>
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<p>
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Performs a Ray/OBB intersection test and stores the intersection point to the given 3D vector.
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If no intersection is detected, *null* is returned.
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</p>
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<h3>[method:this set]( [param:Vector3 center], [param:Vector3 halfSize], [param:Matrix3 rotation] )</h3>
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<p>
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[page:Vector3 center] — The center of the [name].<br />
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[page:Vector3 halfSize] — Positive halfwidth extents of the [name] along each axis.<br />
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[page:Matrix3 rotation] — The rotation of the [name].
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</p>
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<p>
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Defines the [name] for the given values.
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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/examples/jsm/math/OBB.js examples/jsm/math/OBB.js]
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</p>
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</body>
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</html>
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