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								SbXfBox3f(3IV)

NAME
     SbXfBox3f (SbXfBox3f) - 3D box with an associated transformation matrix

INHERITS FROM
     SbBox3f > SbXfBox3f

SYNOPSIS
     #include <Inventor_c/SbBox.h>

	  Functions from class SbXfBox3f:

     SbXfBox3f *	 SbXfBox3fCreate()
     SbXfBox3f *	 SbXfBox3fCreateMinMax(const SbVec3f *_min, const
			      SbVec3f *_max)
     SbXfBox3f *	 SbXfBox3fCreateBox3f(const SbBox3f *box)
     void		 SbXfBox3fDelete(SbXfBox3f *this)
     void		 SbXfBox3fSetXf(SbXfBox3f *this, const SbMatrix *m)
     const SbMatrix *	 SbXfBox3fGetTransform(const SbXfBox3f *this)
     const SbMatrix *	 SbXfBox3fGetInverse(const SbXfBox3f *this)
     SbVec3f		 SbXfBox3fGetCenter(const SbXfBox3f *this)
     void		 SbXfBox3fExtendByPt(SbXfBox3f *this, const SbVec3f
			      *pt)
     void		 SbXfBox3fExtendByBox(SbXfBox3f *this, const SbBox3f
			      *bb)
     void		 SbXfBox3fExtendByXfBox(SbXfBox3f *this, const
			      SbXfBox3f *bb)
     SbBool		 SbXfBox3fIntersectPt(const SbXfBox3f *this, const
			      SbVec3f *pt)
     SbBool		 SbXfBox3fIntersectBox(const SbXfBox3f *this, const
			      SbBox3f *bb)
     void		 SbXfBox3fSetBounds(SbXfBox3f *this, float xmin, float
			      ymin, float zmin, float xmax, float ymax, float
			      zmax)
     void		 SbXfBox3fSetBoundsMinMax(SbXfBox3f *this, const
			      SbVec3f *_min, const SbVec3f *_max)
     void		 SbXfBox3fGetBounds(const SbXfBox3f *this, float
			      *xmin, float *ymin, float *zmin, float *xmax,
			      float *ymax, float *zmax)
     void		 SbXfBox3fGetBoundsMinMax(const SbXfBox3f *this,
			      SbVec3f *_min, SbVec3f *_max)
     void		 SbXfBox3fGetOrigin(SbXfBox3f *this, float *originX,
			      float *originY, float *originZ)
     void		 SbXfBox3fGetSize(SbXfBox3f *this, float *sizeX, float
			      *sizeY, float *sizeZ)
     float		 SbXfBox3fGetVol(const SbXfBox3f *this)
     void		 SbXfBox3fMakeEmpty(SbXfBox3f *this)
     SbBool		 SbXfBox3fIsEmpty(const SbXfBox3f *this)
     SbBool		 SbXfBox3fHasVol(const SbXfBox3f *this)
     void		 SbXfBox3fGetSpan(const SbXfBox3f *this, const SbVec3f
			      *direction, float *dMin, float *dMax)
     void		 SbXfBox3fXf(SbXfBox3f *this, const SbMatrix *m)

Page 1

SbXfBox3f(3IV)

     SbBox3f		 SbXfBox3fProject(const SbXfBox3f *this)
     int		 SbXfBox3fIsEq(SbXfBox3f *this, const SbXfBox3f *b1,
			      const SbXfBox3f *b2)
     int		 SbXfBox3fIsNEq(SbXfBox3f *this, const SbXfBox3f *b1,
			      const SbXfBox3f *b2)

	  Functions from class SbBox3f:

     const SbVec3f *	 SbXfBox3fGetMinConst(SbXfBox3f *this)
     const SbVec3f *	 SbXfBox3fGetMaxConst(SbXfBox3f *this)

DESCRIPTION
     A 3D box with an arbitrary transformation applied. This class is useful
     when a box will be transformed frequently; if an SbBox3f is used for this
     purpose it will expand each time it is transformed in order to keep
     itself axis-aligned. Transformations can be accumulated on an SbXfBox3f
     without expanding the box, and after all transformations have been done,
     the box can be expanded to an axis-aligned box if necessary.

FUNCTIONS
     SbXfBox3f *	 SbXfBox3fCreate()
     SbXfBox3f *	 SbXfBox3fCreateMinMax(const SbVec3f *_min, const
			      SbVec3f *_max)
     SbXfBox3f *	 SbXfBox3fCreateBox3f(const SbBox3f *box)
     void		 SbXfBox3fDelete(SbXfBox3f *this)
	  Constructors and destructor.

     void		 SbXfBox3fSetXf(SbXfBox3f *this, const SbMatrix *m)
	  Sets the transformation on the box.

     const SbMatrix *	 SbXfBox3fGetTransform(const SbXfBox3f *this)
     const SbMatrix *	 SbXfBox3fGetInverse(const SbXfBox3f *this)
	  Gets the transformation on the box, and its inverse.

     SbVec3f		 SbXfBox3fGetCenter(const SbXfBox3f *this)
	  Returns the center of the box.

     void		 SbXfBox3fExtendByPt(SbXfBox3f *this, const SbVec3f
			      *pt)
	  Extends the box (if necessary) to contain the given 3D point. If the
	  box has had a non-identity transformation applied using the
	  setTransform() method, the point is assumed to be in the transformed
	  space.  For example, the following code sequence:

	       SbXfBox3f bbox; bbox.extendBy(SbVec3f(0,0,0));
	       SbMatrix trans; trans.setTranslate(SbVec3f(1,1,1));
	       bbox.setTransform(trans);
	       bbox.extendBy(SbVec3f(0,0,0));

	  will result in a bounding box extending from (-1,-1,-1) to (0,0,0)
	  in bbox'es local (untransformed) space.

Page 2

								SbXfBox3f(3IV)

     void		 SbXfBox3fExtendByBox(SbXfBox3f *this, const SbBox3f
			      *bb)
	  Extends the box (if necessary) to contain the given SbBox3f. If the
	  box has had a non-identity transformation applied using the
	  setTransform() method, the given SbBox3f is assumed to be in the
	  transformed space.

     void		 SbXfBox3fExtendByXfBox(SbXfBox3f *this, const
			      SbXfBox3f *bb)
	  Extends the box (if necessary) to contain the given SbXfBox3f.

     SbBool		 SbXfBox3fIntersectPt(const SbXfBox3f *this, const
			      SbVec3f *pt)
	  Returns TRUE if intersection of given point and this box is not
	  empty.

     SbBool		 SbXfBox3fIntersectBox(const SbXfBox3f *this, const
			      SbBox3f *bb)
	  Returns TRUE if intersection of given box and this box is not empty.

     void		 SbXfBox3fSetBounds(SbXfBox3f *this, float xmin, float
			      ymin, float zmin, float xmax, float ymax, float
			      zmax)
     void		 SbXfBox3fSetBoundsMinMax(SbXfBox3f *this, const
			      SbVec3f *_min, const SbVec3f *_max)
     void		 SbXfBox3fGetBounds(const SbXfBox3f *this, float
			      *xmin, float *ymin, float *zmin, float *xmax,
			      float *ymax, float *zmax)
     void		 SbXfBox3fGetBoundsMinMax(const SbXfBox3f *this,
			      SbVec3f *_min, SbVec3f *_max)
	  Set and get the bounds of the box.

     void		 SbXfBox3fGetOrigin(SbXfBox3f *this, float *originX,
			      float *originY, float *originZ)
	  Returns origin (minimum point) of the box.

     void		 SbXfBox3fGetSize(SbXfBox3f *this, float *sizeX, float
			      *sizeY, float *sizeZ)
	  Returns size of the box.

     float		 SbXfBox3fGetVol(const SbXfBox3f *this)
	  Gives the volume of the box (0 for an empty box).

     void		 SbXfBox3fMakeEmpty(SbXfBox3f *this)
	  Sets the box to contain nothing.

     SbBool		 SbXfBox3fIsEmpty(const SbXfBox3f *this)
	  Checks if the box is empty (degenerate).

     SbBool		 SbXfBox3fHasVol(const SbXfBox3f *this)
	  Checks if the box has volume; i.e., all three dimensions have
	  positive size.

Page 3

SbXfBox3f(3IV)

     void		 SbXfBox3fGetSpan(const SbXfBox3f *this, const SbVec3f
			      *direction, float *dMin, float *dMax)
	  Finds the extent of the box along a particular direction.

     void		 SbXfBox3fXf(SbXfBox3f *this, const SbMatrix *m)
	  Transforms the box by the given matrix.

     SbBox3f		 SbXfBox3fProject(const SbXfBox3f *this)
	  Projects an SbXfBox3f to an SbBox3f

     int		 SbXfBox3fIsEq(SbXfBox3f *this, const SbXfBox3f *b1,
			      const SbXfBox3f *b2)
     int		 SbXfBox3fIsNEq(SbXfBox3f *this, const SbXfBox3f *b1,
			      const SbXfBox3f *b2)
	  Equality comparisons.

FILE FORMAT/DEFAULTS
     XfBox3f {
     }

SEE ALSO
     SbBox3f, SbBox2f, SbBox2s, SbVec3f, SbVec2f, SbVec2s, SbMatrix,
     SoGetBoundingBoxAction

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