Cylinder projector. More...

#include <Inventor/projectors/SbCylinderProjector.h>

Inheritance diagram for SbCylinderProjector:

Public Member Functions
	~SbCylinderProjector ()
	Destructor.
virtual SbVec3f	project (const SbVec2f &point)=0
	Apply the projector using the given point, returning the point in three dimensions that it projects to.
SbVec3f	projectAndGetRotation (const SbVec2f &point, SbRotation &rot)
	Apply the projector using the given point, returning the point in three dimensions that it projects to.
virtual SbRotation	getRotation (const SbVec3f &point1, const SbVec3f &point2)=0
	Get a rotation given two points on this cylinder projector.
void	setCylinder (const SbCylinder &cyl)
	Set and get the cylinder on which to project points.
const SbCylinder &	getCylinder () const
	Set and get the cylinder on which to project points.
void	setOrientToEye (SbBool orientToEye)
	Set and get whether the projector should always be oriented towards the eye.
SbBool	isOrientToEye () const
	Set and get whether the projector should always be oriented towards the eye.
void	setFront (SbBool isFront)
	Set and get whether the projector should intersect the half of the cylinder that faces the eye.
SbBool	isFront () const
	Set and get whether the projector should intersect the half of the cylinder that faces the eye.
SbBool	isPointInFront (const SbVec3f &point) const
	Set and get whether the projector should intersect the half of the cylinder that faces the eye.
virtual void	setWorkingSpace (const SbMatrix &space)
	Set the transform space to work in.
Protected Member Functions
	SbCylinderProjector (SbBool orientToEye)
	Constructors The default cylinder to is centered about the Y axis and has a radius of 1.0.
	SbCylinderProjector (const SbCylinder &cyl, SbBool orientToEye)
SbBool	intersectCylinderFront (const SbLine &line, SbVec3f &result)
	Just like cylinder::intersect, except always returns the intersection that is in "front".
Protected Attributes
SbBool	intersectFront
	Are intersections done on the front half ( if not, they're done on th e back half) of the cylinder?
SbCylinder	cylinder
	Cylinder for this projector.
SbBool	orientToEye
	TRUE if always oriented to eye.
SbBool	needSetup
	Set TRUE whenever cylinder, work space or orientation changes.
SbVec3f	lastPoint
	Cached last point on this projector.

Detailed Description

SbCylinderProjector is an abstract base class for projectors that use a cylinder in their projection. The getRotation() method

for an SbCylinderProjector will always return a rotation that is about the axis of the cylinder. Cylinder projectors are typically used to write interactive 3D manipulators and viewers.

See Also

: SbCylinderPlaneProjector, SbCylinderSectionProjector, SbCylinderSheetProjector, SbLineProjector, SbPlaneProjector, SbSpherePlaneProjector, SbSphereProjector, SbSphereSectionProjector, SbSphereSheetProjector

Definition at line 86 of file SbCylinderProjector.h.

Constructor & Destructor Documentation

SbCylinderProjector::~SbCylinderProjector ( ) [inline]

Definition at line 91 of file SbCylinderProjector.h.

SbCylinderProjector::SbCylinderProjector ( SbBool orientToEye ) [protected]

SbCylinderProjector::SbCylinderProjector	(	const SbCylinder &	cyl,
		SbBool	orientToEye
	)		`[protected]`

Member Function Documentation

const SbCylinder& SbCylinderProjector::getCylinder ( ) const [inline]

The default cylinder is aligned with the Y axis and has radius 1.0.

Definition at line 118 of file SbCylinderProjector.h.

virtual SbRotation SbCylinderProjector::getRotation	(	const SbVec3f &	point1,
		const SbVec3f &	point2
	)		`[pure virtual]`

The rotation will be about the axis of the cylinder.

Implemented in SbCylinderPlaneProjector, SbCylinderSectionProjector, and SbCylinderSheetProjector.

SbBool SbCylinderProjector::intersectCylinderFront	(	const SbLine &	line,
		SbVec3f &	result
	)		`[protected]`

SbBool SbCylinderProjector::isFront ( ) const [inline]

Definition at line 133 of file SbCylinderProjector.h.

SbBool SbCylinderProjector::isOrientToEye ( ) const [inline]

Set to FALSE if the tolerance should be evaluated in working space.

Definition at line 125 of file SbCylinderProjector.h.

SbBool SbCylinderProjector::isPointInFront ( const SbVec3f & point ) const

virtual SbVec3f SbCylinderProjector::project ( const SbVec2f & point ) [pure virtual]

The point should be normalized from 0-1, with (0,0) at the lower-left.

Implements SbProjector.

Implemented in SbCylinderPlaneProjector, SbCylinderSectionProjector, and SbCylinderSheetProjector.

SbVec3f SbCylinderProjector::projectAndGetRotation	(	const SbVec2f &	point,
		SbRotation &	rot
	)

This also returns in rot a rotation about the axis of the cylinder from the last projected point to this one. The passed point should be normalized (i.e. lie in the range [0.0,1.0]), with (0,0) at the lower-left.

void SbCylinderProjector::setCylinder ( const SbCylinder & cyl )

The default cylinder is aligned with the Y axis and has radius 1.0.

void SbCylinderProjector::setFront ( SbBool isFront )

Set to FALSE if the projector should intersect with the rear half.

void SbCylinderProjector::setOrientToEye ( SbBool orientToEye )

Set to FALSE if the tolerance should be evaluated in working space.

virtual void SbCylinderProjector::setWorkingSpace ( const SbMatrix & space ) [virtual]

Reimplemented from SbProjector.