Sphere-plane projector. More...

#include <Inventor/projectors/SbSpherePlaneProjector.h>

Inheritance diagram for SbSpherePlaneProjector:

Public Member Functions
	SbSpherePlaneProjector (float edgeTol=0.9, bool orientToEye=TRUE)
	Default constructor.

	SbSpherePlaneProjector (const SbSphere &sph, float edgeTol=0.9, bool orientToEye=TRUE)
	Constructor taking the sphere.

	~SbSpherePlaneProjector ()
	Destructor.

virtual SbProjector *	copy () const
	Returns an instance that is a copy of this instance.

virtual SbVec3f	project (const SbVec2f &point)
	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)
	Computes a rotation based on two points on this projector.

Public Member Functions inherited from SbSphereSectionProjector
	SbSphereSectionProjector (float edgeTol=.9, bool orientToEye=TRUE)
	Default constructor.

	SbSphereSectionProjector (const SbSphere &sph, float edgeTol=.9, bool orientToEye=TRUE)
	Constructor taking the sphere.

	~SbSphereSectionProjector ()
	Destructor.

virtual SbProjector *	copy () const
	Returns an instance that is a copy of this instance.

virtual SbVec3f	project (const SbVec2f &point)
	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)
	Computes a rotation based on two points on this projector.

void	setTolerance (float edgeTol)

float	getTolerance () const
	Set and get the edge tolerance as a fraction of the radius of the sphere.

void	setRadialFactor (float rad=0.0)

float	getRadialFactor () const
	Set and get the radial rotation factor.

bool	isWithinTolerance (const SbVec3f &point)
	Find whether this point on the sphere or tolerance plane is within tolerance.

Public Member Functions inherited from SbSphereProjector
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 sphere projector.

void	setSphere (const SbSphere &sph)
	Set and get the sphere on which to project points.

const SbSphere &	getSphere () const
	Set and get the sphere on which to project points.

void	setOrientToEye (bool orientToEye)
	Set and get whether the projector should always be oriented towards the eye.

bool	isOrientToEye () const
	Set and get whether the projector should always be oriented towards the eye.

void	setFront (bool inFront)
	Set whether the projector should intersect the half of the sphere that faces the eye.

bool	isFront () const
	Get whether the projector should intersect the half of the sphere that faces the eye.

bool	isPointInFront (const SbVec3f &point) const
	Get whether the projector should intersect the half of the sphere that faces the eye.

virtual void	setWorkingSpace (const SbMatrix &space)
	Set the transform space to work in.

	~SbSphereProjector ()
	Destructor.

Public Member Functions inherited from SbProjector
virtual SbVec3f	project (const SbVec2f &point)=0
	Apply the projector using the given point, returning the point in three dimensions that it projects to.

virtual void	setViewVolume (const SbViewVolume &vol)
	Set the view volume to use for the projection.

const SbViewVolume &	getViewVolume () const
	Get the view volume to use for the projection.

virtual void	setWorkingSpace (const SbMatrix &space)
	Set the transform space to work in.

const SbMatrix &	getWorkingSpace () const
	Get the transform space to work in.

virtual SbProjector *	copy () const =0
	Creates and returns an exact copy of the projector.

Protected Member Functions
SbRotation	getRotation (const SbVec3f &point1, bool tol1, const SbVec3f &point2, bool tol2)

Protected Member Functions inherited from SbSphereSectionProjector
virtual void	setupTolerance ()
	Sets up the tolerance slice.

Protected Member Functions inherited from SbSphereProjector
	SbSphereProjector (bool orientToEye)
	Constructors The default sphere to use has a radius of 1.0 and is centered at (0,0,0).

	SbSphereProjector (const SbSphere &s, bool orientToEye)

Protected Member Functions inherited from SbProjector
	SbProjector ()
	Default constructor.

virtual	~SbProjector ()

SbLine	getWorkingLine (const SbVec2f &point) const
	Given this mouse point, return the line it projects to in working space.

Additional Inherited Members
Protected Attributes inherited from SbSphereSectionProjector
float	tolerance
	Information about the slice tolerance.

float	tolDist
	dist from planePoint to tolerance slice

float	radialFactor

SbVec3f	planePoint
	Information about the plane used for intersection testing.

SbVec3f	planeDir
	normal direction

float	planeDist
	distance from sphere center

SbPlane	tolPlane
	the plane itself

Protected Attributes inherited from SbSphereProjector
bool	intersectFront
	Are intersections done on the front half (if not, they're done on the back half) of the sphere?

SbSphere	sphere
	The sphere being used.

bool	orientToEye
	TRUE if always oriented to eye.

bool	needSetup
	Set TRUE whenever sphere, work space or orientation changes.

SbVec3f	lastPoint
	cached last point on this projector

Protected Attributes inherited from SbProjector
SbViewVolume	viewVol

SbMatrix	worldToWorking

SbMatrix	workingToWorld

Detailed Description

SbSpherePlaneProjector projects a window space point (usually based on the mouse location) onto a surface defined by a sphere and plane cutting through the sphere. Two projected points can produce a rotation about the sphere's center. When the mouse position projects onto the plane, the rotations will be as if the plane is being dragged, causing the sphere to roll beneath it.

Incremental changes (delta rotation) can be computed during interactive sessions. Sphere projectors are typically used to write interactive 3D manipulators and viewers.

See Also

: SbCylinderProjector, SbCylinderPlaneProjector, SbCylinderSectionProjector, SbCylinderSheetProjector, SbLineProjector, SbPlaneProjector, SbSphereSheetProjector

Definition at line 92 of file SbSpherePlaneProjector.h.

Constructor & Destructor Documentation

◆ SbSpherePlaneProjector() [1/2]

SbSpherePlaneProjector::SbSpherePlaneProjector	(	float	edgeTol = `0.9`,
		bool	orientToEye = `TRUE`
	)

The default view volume is undefined. The default working space is identity (world space). The default sphere to use has a radius of 1.0 and is centered at (0,0,0). The default edge tolerance is .9. The default eye orientation is TRUE.

◆ SbSpherePlaneProjector() [2/2]

SbSpherePlaneProjector::SbSpherePlaneProjector	(	const SbSphere &	sph,
		float	edgeTol = `0.9`,
		bool	orientToEye = `TRUE`
	)

◆ ~SbSpherePlaneProjector()

SbSpherePlaneProjector::~SbSpherePlaneProjector ( )

inline

Definition at line 109 of file SbSpherePlaneProjector.h.

Member Function Documentation

◆ copy()

virtual SbProjector * SbSpherePlaneProjector::copy ( ) const

virtual

The caller is responsible for deleting the copy when done.

Reimplemented from SbSphereSectionProjector.

◆ getRotation() [1/2]

SbRotation SbSpherePlaneProjector::getRotation	(	const SbVec3f &	point1,
		bool	tol1,
		const SbVec3f &	point2,
		bool	tol2
	)

protected

◆ getRotation() [2/2]

virtual SbRotation SbSpherePlaneProjector::getRotation	(	const SbVec3f &	point1,
		const SbVec3f &	point2
	)

virtual

Reimplemented from SbSphereSectionProjector.

◆ project()

virtual SbVec3f SbSpherePlaneProjector::project ( const SbVec2f & point )

virtual

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

Reimplemented from SbSphereSectionProjector.

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

C:/jh/mevislab/4.0.2_1/build/MeVis/ThirdParty/Sources/Inventor/include/Inventor/projectors/SbSpherePlaneProjector.h

Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ SbSpherePlaneProjector() [1/2]

◆ SbSpherePlaneProjector() [2/2]

◆ ~SbSpherePlaneProjector()

Member Function Documentation

◆ copy()

◆ getRotation() [1/2]

◆ getRotation() [2/2]

◆ project()