---
name: "SbXfBox3f"
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/SbXfBox3f"
---

# SbXfBox3f(3)

The SbXfBox3f class is a 3 dimensional box with floating point coordinates and an attached transformation.

## NAME

SbXfBox3f - The **SbXfBox3f** class is a 3 dimensional box with floating point coordinates and an attached transformation.

## SYNOPSIS

\#include \<Inventor/SbXfBox3f.h\>

Inherits **SbBox3f**.

### Public Member Functions

**SbXfBox3f** (void)\
 **SbXfBox3f** (const **SbVec3f** &boxmin, const **SbVec3f** &boxmax)\
 **SbXfBox3f** (const **SbBox3f** &box)\
 **~SbXfBox3f** ()\
 void **setTransform** (const **SbMatrix** &m)\
 const **SbMatrix** & **getTransform** (void) const\
 const **SbMatrix** & **getInverse** (void) const\
 **SbVec3f** **getCenter** (void) const\
 void **extendBy** (const **SbVec3f** &pt)\
 void **extendBy** (const **SbBox3f** &bb)\
 void **extendBy** (const **SbXfBox3f** &bb)\
 SbBool **intersect** (const **SbVec3f** &pt) const\
 SbBool **intersect** (const **SbBox3f** &bb) const\
 SbBool **intersect** (const **SbXfBox3f** &bb) const\
 void **getSpan** (const **SbVec3f** &direction, float &dMin, float &dMax) const\
 **SbBox3f** **project** (void) const\
 void **transform** (const **SbMatrix** &m)\
 float **getVolume** (void) const\
 void **print** (FILE \*file) const\

Public Member Functions inherited from **SbBox3f** **SbBox3f** (void)\
 **SbBox3f** (float xmin, float ymin, float zmin, float xmax, float ymax, float zmax)\
 **SbBox3f** (const **SbVec3f** &minpoint, const **SbVec3f** &maxpoint)\
 **SbBox3f** (const **SbBox3d** &box)\
 **SbBox3f** (const **SbBox3s** &box)\
 **SbBox3f** (const **SbBox3i32** &box)\
 **SbBox3f** & **setBounds** (float xmin, float ymin, float zmin, float xmax, float ymax, float zmax)\
 **SbBox3f** & **setBounds** (const **SbVec3f** &minpoint, const **SbVec3f** &maxpoint)\
 **SbBox3f** & **setBounds** (const **SbBox3d** &box)\
 **SbBox3f** & **setBounds** (const **SbBox3s** &box)\
 **SbBox3f** & **setBounds** (const **SbBox3i32** &box)\
 void **getBounds** (float &xmin, float &ymin, float &zmin, float &xmax, float &ymax, float &zmax) const\
 void **getBounds** (**SbVec3f** &minpoint, **SbVec3f** &maxpoint) const\
 const **SbVec3f** & **getMin** (void) const\
 **SbVec3f** & **getMin** (void)\
 const **SbVec3f** & **getMax** (void) const\
 **SbVec3f** & **getMax** (void)\
 void **extendBy** (const **SbVec3f** &pt)\
 void **extendBy** (const **SbBox3f** &box)\
 void **transform** (const **SbMatrix** &matrix)\
 void **makeEmpty** (void)\
 SbBool **isEmpty** (void) const\
 SbBool **hasVolume** (void) const\
 float **getVolume** (void) const\
 SbBool **intersect** (const **SbVec3f** &pt) const\
 SbBool **intersect** (const **SbBox3f** &box) const\
 **SbVec3f** **getClosestPoint** (const **SbVec3f** &point) const\
 SbBool **outside** (const **SbMatrix** &mvp, int &cullbits) const\
 **SbVec3f** **getCenter** (void) const\
 void **getOrigin** (float &originX, float &originY, float &originZ) const\
 void **getSize** (float &sizeX, float &sizeY, float &sizeZ) const\
 **SbVec3f** **getSize** (void) const\
 void **getSpan** (const **SbVec3f** &dir, float &dmin, float &dmax) const\
 void **print** (FILE \*file) const\

### Additional Inherited Members

Related Symbols inherited from **SbBox3f** int **operator==** (const **SbBox3f** &b1, const **SbBox3f** &b2)\
 int **operator!=** (const **SbBox3f** &b1, const **SbBox3f** &b2)\

## Detailed Description

The **SbXfBox3f** class is a 3 dimensional box with floating point coordinates and an attached transformation.

This box class is used by many other classes in Coin for data exchange. It provides storage for two box corners with floating point coordinates, and for a floating point 4x4 transformation matrix.

**See also**

**SbBox2s**, **SbBox2f**, **SbBox2d**, **SbBox3s**, **SbBox3f**, **SbBox3d**, **SbMatrix**.

## Constructor & Destructor Documentation

### SbXfBox3f::SbXfBox3f (void )

The default constructor makes an empty box and identity matrix.

### SbXfBox3f::SbXfBox3f (const SbVec3f & boxmin, const SbVec3f & boxmax)

Constructs a box with the given corners.

The coordinates of *min* should be less than the coordinates of *max* if you want to make a valid box.

### SbXfBox3f::SbXfBox3f (const SbBox3f & box)

Constructs a box from the given **SbBox3f**.

The transformation is set to the identity matrix.

### SbXfBox3f::~SbXfBox3f ()

Default destructor does nothing.

## Member Function Documentation

### void SbXfBox3f::setTransform (const SbMatrix & m)

Sets the transformation to the given **SbMatrix**.

### const SbMatrix & SbXfBox3f::getTransform (void ) const

Returns the current transformation matrix.

### const SbMatrix & SbXfBox3f::getInverse (void ) const

Returns the inverse of the current transformation matrix.

### SbVec3f SbXfBox3f::getCenter (void ) const

Return the transformed center point of the box.

### void SbXfBox3f::extendBy (const SbVec3f & pt)

Extend the boundaries of the box by the given point, i.e. make the point fit inside the box if it isn't already so.

The point is assumed to be in transformed space.

### void SbXfBox3f::extendBy (const SbBox3f & bb)

Extend the boundaries of the box by the given *bb* parameter. The given box is assumed to be in transformed space.

The two given boxes will be combined in such a way so that the resultant bounding box always has the smallest possible volume. To accomplish this, the transformation on this **SbXfBox3f** will sometimes be flattened before it is combined with *bb*.

### void SbXfBox3f::extendBy (const SbXfBox3f & bb)

Extend the boundaries of the box by the given *bb* parameter.

The given box is assumed to be in transformed space.

Note: is not guaranteed to give an optimal result if used for bounding box calculation since the transformation matrix might change. See documentation in **SoGetBoundingBoxAction** for more details.

### SbBool SbXfBox3f::intersect (const SbVec3f & pt) const

Check if the given point lies within the boundaries of this box.

The point is assumed to be in transformed space.

### SbBool SbXfBox3f::intersect (const SbBox3f & bb) const

Check if the given *box* lies entirely or partially within the boundaries of this box.

The given box is assumed to be in transformed space.

### SbBool SbXfBox3f::intersect (const SbXfBox3f & xfbb) const

Check if two transformed boxes intersect.

This function is an extension for Coin, and it is not available in the original SGI Open Inventor v2.1 API.\

**Since**

Coin 2.0

### void SbXfBox3f::getSpan (const SbVec3f & direction, float & dMin, float & dMax) const

Find the span of the box in the given direction (i.e. how much room in the given direction the box needs). The distance is returned as the minimum and maximum distance from origo to the closest and furthest plane defined by the direction vector and each of the box' corners. The difference between these values gives the span.

### SbBox3f SbXfBox3f::project (void ) const

Project the **SbXfBox3f** into a **SbBox3f**.

This gives the same resulting **SbBox3f** as doing a **SbBox3f::transform()** with this transformation matrix as parameter.

### void SbXfBox3f::transform (const SbMatrix & m)

Overridden from **SbBox3f**, as the transformations are to be kept separate from the box in the **SbXfBox3f** class.

### float SbXfBox3f::getVolume (void ) const

Return box volume. Overridden from parent class to take into account the possibility of scaling in the transformation matrix.

### void SbXfBox3f::print (FILE \* fp) const

Dump the state of this object to the *fp* file stream. Only works in debug version of library, method does nothing in an optimized build.

## Author

Generated automatically by Doxygen for Coin from the source code.