SbPlane Class Reference

Oriented plane in 3D. More...

#include <Inventor/SbPlane.h>

Public Member Functions
	SbPlane ()
	Default constructor.
	SbPlane (const SbVec3f &p0, const SbVec3f &p1, const SbVec3f &p2)
	Constructor.
	SbPlane (const SbVec3f &normal, float distance)
	Constructor.
	SbPlane (const SbVec3f &normal, const SbVec3f &point)
	Constructor.
void	offset (float d)
	Offset a plane by a given distance.
SbBool	intersect (const SbLine &l, SbVec3f &intersection) const
	Intersect line and plane, returning TRUE if there is an intersection, FALSE if line is parallel to plane.
void	transform (const SbMatrix &matrix)
	Transforms the plane by the given matrix.
SbBool	isInHalfSpace (const SbVec3f &point) const
	Returns TRUE if the given point is within the half-space defined by the plane.
const SbVec3f &	getNormal () const
	Returns normal vector to plane.
float	getDistanceFromOrigin () const
	Returns distance from origin to plane.
float	getDistance (const SbVec3f &point) const
	Returns the distance from a point to plane.

Friends
int	operator== (const SbPlane &p1, const SbPlane &p2)
	Equality comparison operator.
int	operator!= (const SbPlane &p1, const SbPlane &p2)
	Inequality comparison operator.

Detailed Description

Oriented plane in 3D.

Represents an oriented plane in 3D. This is a lightweight class/datatype that is used for arguments to some Open Inventor objects.

SEE ALSO

SbVec3f, SbLine

Definition at line 64 of file SbPlane.h.

Constructor & Destructor Documentation

SbPlane() [1/4]

SbPlane::SbPlane ( )

inline

Default constructor.

The plane is not initialized.

Definition at line 69 of file SbPlane.h.

SbPlane() [2/4]

SbPlane::SbPlane	(	const SbVec3f &	p0,
		const SbVec3f &	p1,
		const SbVec3f &	p2 )

Constructor.

p0, p1, and p2 represent three points in the plane.

SbPlane() [3/4]

SbPlane::SbPlane	(	const SbVec3f &	normal,
		float	distance )

Constructor.

normal is a normal vector and distance is distance from origin to plane along normal vector.

SbPlane() [4/4]

SbPlane::SbPlane	(	const SbVec3f &	normal,
		const SbVec3f &	point )

Constructor.

normal is a normal vector and point is a point in 3-space for the plane to pass through.

Member Function Documentation

getDistance()

float SbPlane::getDistance

(

const SbVec3f &

point

)

const

Returns the distance from a point to plane.

Positive distance means the point is in the plane's half space.

getDistanceFromOrigin()

float SbPlane::getDistanceFromOrigin ( ) const

inline

Returns distance from origin to plane.

Definition at line 121 of file SbPlane.h.

getNormal()

const SbVec3f & SbPlane::getNormal ( ) const

inline

Returns normal vector to plane.

Definition at line 117 of file SbPlane.h.

intersect()

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

Intersect line and plane, returning TRUE if there is an intersection, FALSE if line is parallel to plane.

isInHalfSpace()

SbBool SbPlane::isInHalfSpace

(

const SbVec3f &

point

)

const

Returns TRUE if the given point is within the half-space defined by the plane.

offset()

void SbPlane::offset

(

float

d

)

Offset a plane by a given distance.

transform()

void SbPlane::transform

(

const SbMatrix &

matrix

)

Transforms the plane by the given matrix.

Friends And Related Symbol Documentation

operator!=

int operator!= ( const SbPlane & p1, const SbPlane & p2 )

friend

Inequality comparison operator.

Definition at line 130 of file SbPlane.h.

operator==

int operator== ( const SbPlane & p1, const SbPlane & p2 )

friend

Equality comparison operator.

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

• Inventor/SbPlane.h