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BoundingBox)
The BoundingBox class specifies axis alligned bounding box in 3D space. The class is used mainly for purposes of coarse collision detection tests.
Constructors
Default BoundingBox class constructor does not initialize the bounding box field to any value. This is on purpose for performance reasons. Use Initialize method to set the bounding box object into "empty" state. Use Set method to set bounding box values to the state you want..
Fields
| Field name
| Type
| Description
|
| minX
| float
| Minimimum bounding box's X coordinate
|
| manX
| float
| Maximim bounding box's X coordinate
|
| minY
| float
| Minimimum bounding box's Y coordinate
|
| manY
| float
| Maximim bounding box's Y coordinate
|
| minZ
| float
| Minimimum bounding box's Z coordinate
|
| manZ
| float
| Maximim bounding box's Z coordinate
|
| Field name
| Type
| Description
|
| universeBoundingBox
| BoundingBox
| A static variable of BoundingBox type. The universeBoundingBox has all it's min fields initialized to -FLT_MAX and max fields to FLT_MAX. It represents biggest bounding box possible and all Intersects method calls using it will return true.
|
Methods
| Initialize
| Initialize bounding box into "empty" state. In the "empty" state all min bounding box fields are set to FLT_MAX value and all max fields are set to -FLT_MAX value. This assures that all bounding box's Intersect method calls will return false indicating no intersection with the box.
|
| Set
| Set's object's field values to specified parameters.
|
| Add
| Extends bounding box to include specified parameter's bounding box. The Add method is overloaded to take various parameter types, such as point, PointList, TriangleByRefList, Shape, PolyLine, BoundingBox, a shape transformaed by given Matrix4x4f. If the bounding box already encloses the specified parameter's bounding box then the function does nothing.
|
| AddSphere
| Extends bounding box to include specified spere parameter. If the bounding box already encloses the specified sphere then the function does nothing.
|
| MakeCube
| If the bounding box is not already a cube then the method extends it to make it a cube.
|
| Intersects
| Returns true if specified object intersects, touches, or lies inside the bounding box. The method is overloaded and can take Point, BoundingBox, LineSegment type as a parameter. Otherwise returns false.
|
| IsInside
| Returns true if the bounding box instance is inside specified bounding box parameter. Otherwise returns false.
|
| IsTouching
| Returns true if another bounding box boundary is within cMinDistance of the bounding box instance.
|
| Move
| Moves the bounding box by specified vector.
|
| Expand
| Expands the bounding box by specified size.
|
| Scale
| Multiplies bounding box by specified factor.
|
| MaxExtent
| Returns maximum extend of the bonding box. For example if the box is longes in the X dimension then the method returns value of maxX minus minX.
|
| BoundingSphereRadius
| Returns radius of a minimum sized bounding sphere which completely encloses the bounding box.
|
| Center
| Returns center point of the bounding box.
|
| GetShape
| Returns bounding box as a shape object.
|
| IsEmpty
| Returns true if the bounding box is an "empty" bounding box. Otherwise returns false.
|
Operators
| const float*
| Returns const pointer to the eight float field values of the bounding box instance.
|
| float*
| Returns const pointer to the eight float field values of the bounding box instance.
|
See Also
SolidKit Library Documentation
|
