SbSphere Class Reference

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 neccessary 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 file stream. Only works in debug version of library, method does nothing in an optimized compile.

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

• SbSphere.h
• SbSphere.cpp