SbLineProjector Class Reference

Line projector. More...

#include <Inventor/projectors/SbLineProjector.h>

Inheritance diagram for SbLineProjector:

Public Member Functions
	SbLineProjector ()
	Constructor and destructor.
	~SbLineProjector ()
	Constructor and 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.
void	setLine (const SbLine &line)
	Set and get the line on which to project 2D points.
const SbLine &	getLine () const
	Set and get the line on which to project 2D points.
virtual SbVec3f	getVector (const SbVec2f &mousePosition1, const SbVec2f &mousePosition2)
	Get a vector on this line given two normalized mouse points.
virtual SbVec3f	getVector (const SbVec2f &mousePosition)
	Get a vector given the current mouse point.
void	setStartPosition (const SbVec2f &mousePosition)
	Set the initial position from a mouse position.
void	setStartPosition (const SbVec3f &point)
	Set the initial position from a point on the projector.
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 Attributes
SbLine	line
SbVec3f	lastPoint
Protected Attributes inherited from SbProjector
SbViewVolume	viewVol
SbMatrix	worldToWorking
SbMatrix	workingToWorld

Additional Inherited Members
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.

Detailed Description

SbLineProjector projects a 2D point, typically the location of the cursor, onto a 3D line.

See Also

SbCylinderProjector, SbCylinderPlaneProjector, SbCylinderSectionProjector, SbCylinderSheetProjector, SbPlaneProjector, SbSpherePlaneProjector, SbSphereProjector, SbSphereSectionProjector, SbSphereSheetProjector

Definition at line 75 of file SbLineProjector.h.

Constructor & Destructor Documentation

SbLineProjector()

SbLineProjector::SbLineProjector

(

)

The default line passes through the origin and is aligned with the Y axis.

~SbLineProjector()

SbLineProjector::~SbLineProjector ( )

inline

The default line passes through the origin and is aligned with the Y axis.

Definition at line 85 of file SbLineProjector.h.

Member Function Documentation

copy()

virtual SbProjector * SbLineProjector::copy ( ) const

virtual

The caller is responsible for deleting the copy when done.

Implements SbProjector.

getLine()

const SbLine & SbLineProjector::getLine ( ) const

inline

Definition at line 99 of file SbLineProjector.h.

getVector() [1/2]

virtual SbVec3f SbLineProjector::getVector ( const SbVec2f &  mousePosition )

virtual

Uses the last point on this projector from the previous call to getVector() or setStartPostion(). Do not use this if the working space transform is changing since the new point will be in a different space than the old one.

getVector() [2/2]

virtual SbVec3f SbLineProjector::getVector ( const SbVec2f &  mousePosition1, const SbVec2f &  mousePosition2  )

virtual

project()

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

virtual

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

Implements SbProjector.

setLine()

void SbLineProjector::setLine

(

const SbLine &

line

)

setStartPosition() [1/2]

void SbLineProjector::setStartPosition ( const SbVec2f &  mousePosition )

inline

Definition at line 115 of file SbLineProjector.h.

References SbProjector::project().

setStartPosition() [2/2]

void SbLineProjector::setStartPosition ( const SbVec3f &  point )

inline

Definition at line 119 of file SbLineProjector.h.

Member Data Documentation

lastPoint

SbVec3f SbLineProjector::lastPoint

protected

Definition at line 124 of file SbLineProjector.h.

line

SbLine SbLineProjector::line

protected

Definition at line 123 of file SbLineProjector.h.

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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/SbLineProjector.h