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#include <Inventor/caches/SoBoundingBoxCache.h>
Public Member Functions | |
SoBoundingBoxCache (SoState *state) | |
virtual | ~SoBoundingBoxCache () |
void | set (const SbXfBox3f &boundingbox, SbBool centerset, const SbVec3f ¢erpoint) |
const SbXfBox3f & | getBox () const |
const SbBox3f & | getProjectedBox () const |
SbBool | isCenterSet () const |
const SbVec3f & | getCenter () const |
SbBool | hasLinesOrPoints (void) const |
Static Public Member Functions | |
static void | setHasLinesOrPoints (SoState *state) |
SoBoundingBoxCache::SoBoundingBoxCache | ( | SoState * | state | ) |
Constructor with state being the current state.
SoBoundingBoxCache::~SoBoundingBoxCache | ( | ) | [virtual] |
Destructor.
void SoBoundingBoxCache::set | ( | const SbXfBox3f & | boundingbox, | |
SbBool | centerset, | |||
const SbVec3f & | centerpoint | |||
) |
Sets the data for this cache. boundingBox is the node's bounding box, centerSet and centerPoints specifies the center of the geometry inside boundingBox.
const SbXfBox3f & SoBoundingBoxCache::getBox | ( | void | ) | const |
Returns the bounding box for this cache.
const SbBox3f & SoBoundingBoxCache::getProjectedBox | ( | void | ) | const |
Returns the projected bounding box for this cache.
SbBool SoBoundingBoxCache::isCenterSet | ( | void | ) | const |
Returns whether the center of the bounding box was set in the SoBoundingBoxCache::set() method.
const SbVec3f & SoBoundingBoxCache::getCenter | ( | void | ) | const |
Returns the center of the bounding box. Should only be used if SoBoundingBoxCache::isCenterSet() returns TRUE
.
void SoBoundingBoxCache::setHasLinesOrPoints | ( | SoState * | state | ) | [static] |
Sets the flag returned from SoBoundingBoxCache::hasLinesOrPoints() to TRUE
for all open bounding box caches.
The reason bounding box caches keep a lines-or-points flag is to make it known to client code if the shape(s) they contain have any of these primitives -- or are rendered with these primitives. The reason this is important to know for the client code is because it might need to add an "epsilon" slack value to the calculated bounding box to account for smoothing / anti-aliasing effects in the renderer, so lines and points graphics is not accidently clipped by near and far clipping planes, for instance.
This method is a static method on the class. It will upon invocation scan through the state stack and set the flag for all open SoBoundingBoxCache elements. It has been made to work like this so it can easily be invoked on all current bounding box cache instances from the SoShape-type nodes using lines and / or point primitives.
SbBool SoBoundingBoxCache::hasLinesOrPoints | ( | void | ) | const |
Copyright © 1998-2009 by Kongsberg SIM. All rights reserved.
Generated on Mon Jun 15 11:58:28 2009 for Coin by Doxygen 1.5.9.