SbSphere Class Reference
Base Classes

The SbSphere class is a representation of a sphere. More...

`#include <Inventor/SbSphere.h>`

## Public Member Functions

| SbSphere (void)
| SbSphere (const SbVec3f &center, const float radius)
void | setValue (const SbVec3f &center, const float radius)
void | setCenter (const SbVec3f &center)
void | setRadius (const float radius)
const SbVec3f & | getCenter (void) const
float | getRadius (void) const
void | circumscribe (const SbBox3f &box)
SbBool | intersect (const SbLine &l, SbVec3f &intersection) const
SbBool | intersect (const SbLine &l, SbVec3f &enter, SbVec3f &exit) const
SbBool | pointInside (const SbVec3f &p) const
void | print (FILE *file) const

## Detailed Description

The SbSphere class is a representation of a sphere.

This class is used within many other classes in Coin. It contains the data necessary to represent a sphere (a 3D point and a radius).

See also
  SbCylinder

## Constructor & Destructor Documentation

## SbSphere() [1/2]

SbSphere::SbSphere | ( | void |  | ) |

The default constructor does nothing. The center point and the radius will be uninitialized.

## SbSphere() [2/2]

SbSphere::SbSphere | ( | const SbVec3f & | centerarg,
|  | const float | radiusarg )

Construct an SbSphere instance with the given center point and radius.

## Member Function Documentation

## setValue()

void SbSphere::setValue | ( | const SbVec3f & | centerarg,
|  | const float | radiusarg )

Set the sphere's center point and radius.

See also
  getCenter(), getRadius().

## setCenter()

void SbSphere::setCenter | ( | const SbVec3f & | centerarg | ) |

Set the sphere's center point.

See also
  setValue(), setRadius() and getCenter().

## setRadius()

void SbSphere::setRadius | ( | const float | radiusarg | ) |

Set the sphere's radius.

See also
  setValue(), setCenter() and getRadius().

## getCenter()

const SbVec3f & SbSphere::getCenter | ( | void |  | ) | const

Returns an SbVec3f with the sphere's center point.

See also
  setCenter(), getRadius().

## getRadius()

float SbSphere::getRadius | ( | void |  | ) | const

Returns the sphere's radius.

See also
  setRadius(), getCenter().

## circumscribe()

void SbSphere::circumscribe | ( | const SbBox3f & | box | ) |

Make the sphere exactly contain box, i.e. the sphere center point will be the same as that of the box, and the radius will be the distance from the box center point to any of the corners.

## intersect() [1/2]

SbBool SbSphere::intersect | ( | const SbLine & | l,
|  | SbVec3f & | intersection ) const

Finds the intersection enter point for the given line l on the sphere.

If the line does not intersect the sphere, FALSE is returned.

## intersect() [2/2]

SbBool SbSphere::intersect | ( | const SbLine & | l,
|  | SbVec3f & | enter,
|  | SbVec3f & | exit ) const

Find the intersection points of the ray l on the sphere and return these in enter and exit. If the ray just "grazes" the sphere, the enter and exit points have equal values.

If the ray does not intersect the sphere, FALSE is returned, otherwise we will return TRUE.

## pointInside()

SbBool SbSphere::pointInside | ( | const SbVec3f & | p | ) | const

Returns TRUE of the given point p lies within the sphere.

## print()

void SbSphere::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.

The documentation for this class was generated from the following files:

- SbSphere.h
- SbSphere.cpp