Man Linux: Main Page and Category List

NAME

       SbBSPTree -

       The SbBSPTree class provides a binary space partitioning container.

       This class can be used to organize searches for 3D points or normals in
       a set in O(log(n)) time.

SYNOPSIS

       #include <Inventor/SbBSPTree.h>

   Public Member Functions
       SbBSPTree (const int maxnodepts=64, const int initsize=4)
       ~SbBSPTree ()
       int numPoints () const
       SbVec3f getPoint (const int idx) const
       void getPoint (const int idx, SbVec3f &pt) const
       void * getUserData (const int idx) const
       void setUserData (const int idx, void *const data)
       int addPoint (const SbVec3f &pt, void *const userdata=NULL)
       int removePoint (const SbVec3f &pt)
       void removePoint (const int idx)
       int findPoint (const SbVec3f &pos) const
       int findClosest (const SbVec3f &pos) const
       void clear (const int initsize=4)
       void findPoints (const SbSphere &sphere, SbIntList &array) const
       int findClosest (const SbSphere &sphere, SbIntList &array) const
       const SbBox3f & getBBox () const
       const SbVec3f * getPointsArrayPtr () const
       void findPoints (const SbSphere &sphere, SbList< int > &array) const
       int findClosest (const SbSphere &sphere, SbList< int > &array) const

Detailed Description

       The SbBSPTree class provides a binary space partitioning container.

       This class can be used to organize searches for 3D points or normals in
       a set in O(log(n)) time.

       Note: SbBSPTree is an extension to the original Open Inventor API.

Constructor & Destructor Documentation

   SbBSPTree::SbBSPTree (const int maxnodepts = 64, const int initsize = 4)
       Constructor with maxnodepts specifying the maximum number of points in
       a node before it must be split, and initsize is the number of initially
       allocated points in the growable points array. If you know
       approximately the number of points which will be added to the tree, it
       will help the performance if you supply this in initsize.
   SbBSPTree::~SbBSPTree () Destructor. Frees used memory.

Member Function Documentation

   int SbBSPTree::numPoints () const Returns the number of points in the BSP
       tree.
   SbVec3f SbBSPTree::getPoint (const int idx) const Returns the point at
       index idx.
       See also:
           SbBSPTree::numPoints()

   void SbBSPTree::getPoint (const int idx, SbVec3f & pt) const This is an
       overloaded member function, provided for convenience. It differs from
       the above function only in what argument(s) it accepts.
   void * SbBSPTree::getUserData (const int idx) const Returns the user data
       for the point at index idx.
       See also:
           SbBSPTree::addPoint()

           SbBSPTree::numPoints()

   void SbBSPTree::setUserData (const int idx, void *const  data) Sets the
       user data for the point at index idx to data.
       See also:
           SbBSPTree::addPoint()

           SbBSPTree::numPoints()

   int SbBSPTree::addPoint (const SbVec3f & pt, void *const  data = NULL) Adds
       a new point pt to the BSP tree, and returns the index to the new point.
       The user data for that point will be set to data.
       If the point already exists in the BSP tree, the index to the old point
       will be returned. The user data for that point will not be changed.

       See also:
           SbBSPTree::findPoint()

   int SbBSPTree::removePoint (const SbVec3f & pt) Removes the point with
       coordinates pt, and returns the index to the removed point. -1 is
       returned if no point with those coordinates could be found.
   void SbBSPTree::removePoint (const int idx) Removes the point at index idx.
       See also:
           SbBSPTree::numPoints()

   int SbBSPTree::findPoint (const SbVec3f & pos) const Will search the tree,
       and return the index to the point with coordinates matching pos. If no
       such point can be found, -1 is returned.
   int SbBSPTree::findClosest (const SbVec3f & pos) const This is an
       overloaded member function, provided for convenience. It differs from
       the above function only in what argument(s) it accepts.
   void SbBSPTree::findPoints (const SbSphere & sphere, SbIntList & array)
       const Will return indices to all points inside sphere.
       Since:
           Coin 2.3

   int SbBSPTree::findClosest (const SbSphere & sphere, SbIntList & arr) const
       Will return the index to the point closest to the center of sphere.
       Indices to all points inside the sphere is returned in arr. If no
       points can be found inside the sphere, -1 is returned.
       Since:
           Coin 2.3

   const SbBox3f & SbBSPTree::getBBox () const Will return the bounding box of
       all points in the BSP tree.
   const SbVec3f * SbBSPTree::getPointsArrayPtr (void) const Returns a pointer
       to the array of points inserted into the BPS tree.
   void SbBSPTree::findPoints (const SbSphere & sphere, SbList< int > & array)
       const WARNING: Please don’t use this function. It can cause hard to
       find bugs on the Windows platform if your application is linked against
       a different CRT than your Coin DLL.
       Use void findPoints(const SbSphere &sphere, SbIntList & array) instead.

   int SbBSPTree::findClosest (const SbSphere & sphere, SbList< int > & arr)
       const WARNING: Please don’t use this function. It can cause hard to
       find bugs on the Windows platform if your application is linked against
       a different CRT than your Coin DLL.
       Use int findClosest(const SbSphere &sphere, SbIntList & arr) instead.

Author

       Generated automatically by Doxygen for Coin from the source code.