---
name: "SbBox3f"
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/SbBox3f"
---

# SbBox3f(3)

The SbBox3f class is an abstraction for an axis aligned 3 dimensional box.

## NAME

SbBox3f - The **SbBox3f** class is an abstraction for an axis aligned 3 dimensional box.

## SYNOPSIS

\#include \<Inventor/SbBox3f.h\>

Inherited by **SbXfBox3f**.

### Public Member Functions

**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\

### Related Symbols

(Note that these are not member symbols.)  int **operator==** (const **SbBox3f** &b1, const **SbBox3f** &b2)\
 int **operator!=** (const **SbBox3f** &b1, const **SbBox3f** &b2)\

## Detailed Description

The **SbBox3f** class is an abstraction for an axis aligned 3 dimensional box.

This box abstraction class is used by other entities in the Coin library for data exchange and storage. It provides a representation of the defining corners of a box in 3D space, with the sides aligned with the 3 principal axes.

**See also**

**SbBox2s**, **SbBox2f**, **SbBox2d**, **SbBox3s**, **SbBox3d**, **SbXfBox3f**.

## Constructor & Destructor Documentation

### SbBox3f::SbBox3f (void ) \[inline\]

The default constructor makes an empty box.

### SbBox3f::SbBox3f (float minx, float miny, float minz, float maxx, float maxy, float maxz) \[inline\]

Constructs a box with the given corners.

*minx* should be less than *maxx*, *miny* should be less than *maxy* and *minz* should be less than *maxz* if you want to make a valid box.

### SbBox3f::SbBox3f (const SbVec3f & minval, const SbVec3f & maxval) \[inline\]

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.

### SbBox3f::SbBox3f (const SbBox3d & box) \[inline\], \[explicit\]

Constructs an **SbBox3f** instance from the value in an **SbBox3d** instance.

**Since**

Coin 2.5

### SbBox3f::SbBox3f (const SbBox3s & box) \[inline\], \[explicit\]

Constructs an **SbBox3f** instance from the value in an **SbBox3s** instance.

**Since**

Coin 2.5

### SbBox3f::SbBox3f (const SbBox3i32 & box) \[inline\], \[explicit\]

Constructs an **SbBox3f** instance from the value in an **SbBox3i32** instance.

**Since**

Coin 2.5

## Member Function Documentation

### SbBox3f & SbBox3f::setBounds (float minx, float miny, float minz, float maxx, float maxy, float maxz) \[inline\]

Reset the boundaries of the box.

*minx* should be less than *maxx*, *miny* should be less than *maxy* and *minz* should be less than *maxz* if you want to make a valid box.

Returns reference to self.

**See also**

**getBounds()**.

### SbBox3f & SbBox3f::setBounds (const SbVec3f & minval, const SbVec3f & maxval) \[inline\]

Reset the boundaries of the 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.

Returns reference to self.

**See also**

**getBounds()**.

### SbBox3f & SbBox3f::setBounds (const SbBox3d & box)

Reset the boundaries to the boundaries of the given *box*.

Returns reference to self.

**See also**

**getBounds()**.

### SbBox3f & SbBox3f::setBounds (const SbBox3s & box)

Reset the boundaries to the boundaries of the given *box*.

Returns reference to self.

**See also**

**getBounds()**.

### SbBox3f & SbBox3f::setBounds (const SbBox3i32 & box)

Reset the boundaries to the boundaries of the given *box*.

Returns reference to self.

**See also**

**getBounds()**.

### void SbBox3f::getBounds (float & minx, float & miny, float & minz, float & maxx, float & maxy, float & maxz) const \[inline\]

Returns the box boundaries.

**See also**

**setBounds()**.

### void SbBox3f::getBounds (SbVec3f & minobj, SbVec3f & maxobj) const \[inline\]

Returns the box corner points.

**See also**

**setBounds()**.

### const SbVec3f & SbBox3f::getMin (void ) const \[inline\]

Returns the minimum point. This should usually be the lower left corner point of the box.

**See also**

**getOrigin()**, **getMax()**.

### SbVec3f & SbBox3f::getMin (void ) \[inline\]

Returns a modifiable reference to the minimum point.

### const SbVec3f & SbBox3f::getMax (void ) const \[inline\]

Returns the maximum point. This should usually be the upper right corner point of the box.

**See also**

**getMin()**.

### SbVec3f & SbBox3f::getMax (void ) \[inline\]

Returns a modifiable reference to the maximum point.

### void SbBox3f::extendBy (const SbVec3f & point)

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.

### void SbBox3f::extendBy (const SbBox3f & box)

Extend the boundaries of the box by the given *box* parameter. This is equal to calling **extendBy()** twice with the corner points.

### void SbBox3f::transform (const SbMatrix & matrix)

Transform the box by the matrix, and change its boundaries to contain the transformed box.

Doesn't touch illegal/empty boxes.

### void SbBox3f::makeEmpty (void )

Marks this as an empty box.

**See also**

**isEmpty()**.

### SbBool SbBox3f::isEmpty (void ) const \[inline\]

Check if this has been marked as an empty box.

**See also**

**makeEmpty()**.

### SbBool SbBox3f::hasVolume (void ) const \[inline\]

Check if the box has been correctly specified and by that virtue has "positive" volume, i.e. all coordinates of its upper right corner (the maximum point) are greater than the corresponding coordinates of its lower left corner (the minimum point).

### float SbBox3f::getVolume (void ) const \[inline\]

Returns the volume of the box.

### SbBool SbBox3f::intersect (const SbVec3f & point) const

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

### SbBool SbBox3f::intersect (const SbBox3f & box) const

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

### SbVec3f SbBox3f::getClosestPoint (const SbVec3f & point) const

Return the point on the box closest to the given *point*. If the given point equals the center, the center point of the positive Z face is returned.

### SbBool SbBox3f::outside (const SbMatrix & mvp, int & cullbits) const

Check if the box is outside the view volume defined by the *mvp* matrix. Sets *cullbits* according to which planes we're inside or outside. Bit 0 (0x1) is cleared when box is completely inside left and right clipping planes. Bit 1 (0x2) is cleared when box is inside top and bottom clipping planes. Bit 2 (0x4) is cleared when box is inside near and far clipping planes.

Returns TRUE if box is completely outside one of the clipping planes. FALSE otherwise.

### SbVec3f SbBox3f::getCenter (void ) const \[inline\]

Returns the center point of the box.

### void SbBox3f::getOrigin (float & x0, float & y0, float & z0) const \[inline\]

Returns the coordinates of the box origin (i.e. the lower left corner).

**See also**

**getMin()**.

### void SbBox3f::getSize (float & dx, float & dy, float & dz) const \[inline\]

Returns width, height and depth of box.

### SbVec3f SbBox3f::getSize (void ) const \[inline\]

Returns width, height and depth of box as a 3D vector.

**Since**

Coin 3.0

### void SbBox3f::getSpan (const SbVec3f & dir, 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.

### void SbBox3f::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.

## Friends And Related Symbol Documentation

### int operator== (const SbBox3f & b1, const SbBox3f & b2) \[related\]

Check *b1* and *b2* for equality.

### int operator!= (const SbBox3f & b1, const SbBox3f & b2) \[related\]

Check *b1* and *b2* for inequality.

## Author

Generated automatically by Doxygen for Coin from the source code.