SoBoundingBoxCache(3) Coin SoBoundingBoxCache(3)NAME
SoBoundingBoxCache -
The SoBoundingBoxCache class is used to cache bounding boxes.
SYNOPSIS
#include <Inventor/caches/SoBoundingBoxCache.h>
Inherits SoCache.
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)
Additional Inherited Members
Detailed Description
The SoBoundingBoxCache class is used to cache bounding boxes.
Constructor &; Destructor Documentation
SoBoundingBoxCache::SoBoundingBoxCache (SoState *state)
Constructor with state being the current state.
SoBoundingBoxCache::~SoBoundingBoxCache () [virtual]
Destructor.
Member Function Documentation
void SoBoundingBoxCache::set (const SbXfBox3f &boundingbox, SbBoolcenterset, const SbVec3f ¢erpoint)
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.
See also:
SoBoundingBoxCache::getCenter()
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.
See also:
hasLinesOrPoints()
SbBool SoBoundingBoxCache::hasLinesOrPoints (void) const
Return TRUE if the hasLinesOrPoints flag has been set.
See also:
setHasLinesOrPoints()
Author
Generated automatically by Doxygen for Coin from the source code.
Version 3.1.3 Wed May 23 2012 SoBoundingBoxCache(3)
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SoVRMLIndexedShape(3) Coin SoVRMLIndexedShape(3)NAME
SoVRMLIndexedShape -
The SoVRMLIndexedShape class is a superclass for geometry that use indexes.
SYNOPSIS
#include <Inventor/VRMLnodes/SoVRMLIndexedShape.h>
Inherits SoVRMLVertexShape.
Inherited by SoVRMLIndexedFaceSet.
Public Member Functions
virtual SoType getTypeId (void) const
Static Public Member Functions
static SoType getClassTypeId (void)
static void initClass (void)
Public Attributes
SoMFInt32 coordIndex
SoMFInt32 colorIndex
SoMFInt32 normalIndex
SoMFInt32 texCoordIndex
Protected Member Functions
virtual const SoFieldData * getFieldData (void) const
SoVRMLIndexedShape (void)
virtual ~SoVRMLIndexedShape ()
virtual void notify (SoNotList *list)
virtual void computeBBox (SoAction *action, SbBox3f &box, SbVec3f ¢er)
SbBool getVertexData (SoState *state, const SoCoordinateElement *&coords, const SbVec3f *&normals, const int32_t *&cindices, const int32_t
*&nindices, const int32_t *&tindices, const int32_t *&mindices, int &numcindices, const SbBool neednormals, SbBool &normalcacheused)
Static Protected Member Functions
static const SoFieldData ** getFieldDataPtr (void)
Additional Inherited Members
Detailed Description
The SoVRMLIndexedShape class is a superclass for geometry that use indexes.
Constructor &; Destructor Documentation
SoVRMLIndexedShape::SoVRMLIndexedShape (void) [protected]
Constructor.
SoVRMLIndexedShape::~SoVRMLIndexedShape () [protected], [virtual]
Destructor.
Member Function Documentation
SoType SoVRMLIndexedShape::getClassTypeId (void) [static]
This static method returns the SoType object associated with objects of this class.
Reimplemented from SoVRMLVertexShape.
Reimplemented in SoVRMLIndexedFaceSet.
SoType SoVRMLIndexedShape::getTypeId (void) const [virtual]
Returns the type identification of an object derived from a class inheriting SoBase. This is used for run-time type checking and 'downward'
casting.
Usage example:
void foo(SoNode * node)
{
if (node->getTypeId() == SoFile::getClassTypeId()) {
SoFile * filenode = (SoFile *)node; // safe downward cast, knows the type
}
}
For application programmers wanting to extend the library with new nodes, engines, nodekits, draggers or others: this method needs to be
overridden in all subclasses. This is typically done as part of setting up the full type system for extension classes, which is usually
accomplished by using the pre-defined macros available through for instance Inventor/nodes/SoSubNode.h (SO_NODE_INIT_CLASS and
SO_NODE_CONSTRUCTOR for node classes), Inventor/engines/SoSubEngine.h (for engine classes) and so on.
For more information on writing Coin extensions, see the class documentation of the toplevel superclasses for the various class groups.
Reimplemented from SoVRMLVertexShape.
Reimplemented in SoVRMLIndexedFaceSet.
const SoFieldData ** SoVRMLIndexedShape::getFieldDataPtr (void) [static], [protected]
This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.
Reimplemented from SoVRMLVertexShape.
Reimplemented in SoVRMLIndexedFaceSet.
const SoFieldData * SoVRMLIndexedShape::getFieldData (void) const [protected], [virtual]
Returns a pointer to the class-wide field data storage object for this instance. If no fields are present, returns NULL.
Reimplemented from SoVRMLVertexShape.
Reimplemented in SoVRMLIndexedFaceSet.
void SoVRMLIndexedShape::initClass (void) [static]
Sets up initialization for data common to all instances of this class, like submitting necessary information to the Coin type system.
Reimplemented from SoVRMLVertexShape.
Reimplemented in SoVRMLIndexedFaceSet.
void SoVRMLIndexedShape::notify (SoNotList *l) [protected], [virtual]
Notifies all auditors for this instance when changes are made.
Reimplemented from SoVRMLVertexShape.
void SoVRMLIndexedShape::computeBBox (SoAction *action, SbBox3f &box, SbVec3f ¢er) [protected], [virtual]
Implemented by SoShape subclasses to let the SoShape superclass know the exact size and weighted center point of the shape's bounding box.
The bounding box and center point should be calculated and returned in the local coordinate system.
The method implements action behavior for shape nodes for SoGetBoundingBoxAction. It is invoked from SoShape::getBoundingBox(). (Subclasses
should not override SoNode::getBoundingBox().)
The box parameter sent in is guaranteed to be an empty box, while center is undefined upon function entry.
Implements SoShape.
SbBool SoVRMLIndexedShape::getVertexData (SoState *state, const SoCoordinateElement *&coords, const SbVec3f *&normals, const int32_t
*&cindices, const int32_t *&nindices, const int32_t *&tindices, const int32_t *&mindices, int &numcindices, const SbBoolneednormals, SbBool
&normalcacheused) [protected]
Convenience method that will fetch data needed for rendering or generating primitives. Takes care of normal cache.
Member Data Documentation
SoMFInt32 SoVRMLIndexedShape::coordIndex
The coordinate index array.
SoMFInt32 SoVRMLIndexedShape::colorIndex
The color index array.
SoMFInt32 SoVRMLIndexedShape::normalIndex
The normal index array.
SoMFInt32 SoVRMLIndexedShape::texCoordIndex
The texture coordinate index array.
Author
Generated automatically by Doxygen for Coin from the source code.
Version 3.1.3 Wed May 23 2012 SoVRMLIndexedShape(3)