The SbCylinder class is a representation of a cylinder. More...

#include <Inventor/SbCylinder.h>

Public Member Functions
	SbCylinder (void)

	SbCylinder (const SbLine &a, const float r)

void	setValue (const SbLine &a, const float r)

void	setAxis (const SbLine &a)

void	setRadius (const float r)

const SbLine &	getAxis (void) const

float	getRadius (void) const

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

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

void	print (FILE *file) const

Detailed Description

The SbCylinder class is a representation of a cylinder.

This class is used within other classes in Coin. It contains data to represent a cylinder by an axis and a radius. The cylinder has no length/height value, which means it is treated as of infinite length.

See also: SbLine, SbSphere

Constructor & Destructor Documentation

◆ SbCylinder() [1/2]

SbCylinder::SbCylinder ( void )

The default constructor will make a cylinder of radius 1, center axis going through origo in the parallel direction of the positive y-axis.

◆ SbCylinder() [2/2]

SbCylinder::SbCylinder	(	const SbLine &	a,
		const float	r
	)

Construct and initialize an SbCylinder instance with the given axis a and radius r.

Member Function Documentation

◆ setValue()

void SbCylinder::setValue	(	const SbLine &	a,
		const float	r
	)

Set the axis and radius of the cylinder.

See also: getAxis(), getRadius().

◆ setAxis()

void SbCylinder::setAxis ( const SbLine & a )

Set the center axis of the cylinder.

See also: setRadius(), getAxis().

◆ setRadius()

void SbCylinder::setRadius ( const float r )

Set the radius of the cylinder.

See also: setAxis(), getRadius().

◆ getAxis()

const SbLine & SbCylinder::getAxis ( void ) const

Return the line which is the center axis of the cylinder.

See also: setAxis(), getRadius().

◆ getRadius()

float SbCylinder::getRadius ( void ) const

Return radius of cylinder.

See also: setRadius(), getAxis().

◆ intersect() [1/2]

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

Finds the intersection point of the ray l on the cylinder where the ray enters, and return this point in intersection.

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

◆ intersect() [2/2]

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

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