---
name: "SoBoundingBoxCache"
section: "3"
platform: "linux"
package: "coin"
version: "1:4.0.10-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/SoBoundingBoxCache"
---

# SoBoundingBoxCache(3)

The SoBoundingBoxCache class is used to cache bounding boxes.

## 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** &centerpoint)\
 const **SbXfBox3f** & **getBox** () const\
 const **SbBox3f** & **getProjectedBox** () const\
 SbBool **isCenterSet** () const\
 const **SbVec3f** & **getCenter** () const\
 SbBool **hasLinesOrPoints** (void) const\

Public Member Functions inherited from **SoCache** **SoCache** (**SoState** \*const state)\
 void **ref** (void)\
 void **unref** (**SoState** \*state=NULL)\
 void **addElement** (const **SoElement** \*const elem)\
 virtual void **addCacheDependency** (const **SoState** \*state, **SoCache** \*cache)\
 virtual SbBool **isValid** (const **SoState** \*state) const\
 const **SoElement** \* **getInvalidElement** (const **SoState** \*const state) const\
 void **invalidate** (void)\

### Static Public Member Functions

static void **setHasLinesOrPoints** (**SoState** \*state)\

### Additional Inherited Members

Protected Member Functions inherited from **SoCache** virtual void **destroy** (**SoState** \*state)\
 virtual **~SoCache** ()\

## 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, 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.

**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 line and point graphics are not accidentally 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.