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SbPlaneProjector Class Reference

The SbPlaneProjector class projects 2D points to 3D points in a plane.The 3D projection of the 2D coordinates is for this projector class constrained to lie inside a pre-defined 3D plane. More...

#include <Inventor/projectors/SbPlaneProjector.h>

Inheritance diagram for SbPlaneProjector:
SbProjector

Public Member Functions

 SbPlaneProjector (const SbBool orient=0)
 
 SbPlaneProjector (const SbPlane &plane, const SbBool orient=0)
 
virtual SbProjectorcopy (void) const
 
virtual SbVec3f project (const SbVec2f &point)
 
void setPlane (const SbPlane &plane)
 
const SbPlanegetPlane (void) const
 
void setOrientToEye (const SbBool orienttoeye)
 
SbBool isOrientToEye (void) const
 
virtual SbVec3f getVector (const SbVec2f &viewpos1, const SbVec2f &viewpos2)
 
virtual SbVec3f getVector (const SbVec2f &viewpos)
 
void setStartPosition (const SbVec2f &viewpos)
 
void setStartPosition (const SbVec3f &point)
 
- Public Member Functions inherited from SbProjector
virtual void setViewVolume (const SbViewVolume &vol)
 
const SbViewVolumegetViewVolume (void) const
 
virtual void setWorkingSpace (const SbMatrix &space)
 
const SbMatrixgetWorkingSpace (void) const
 

Protected Member Functions

void setupPlane (void)
 
- Protected Member Functions inherited from SbProjector
 SbProjector (void)
 
virtual ~SbProjector ()
 
SbLine getWorkingLine (const SbVec2f &point) const
 
float findVanishingDistance (void) const
 
SbBool verifyProjection (const SbVec3f &projpt) const
 

Protected Attributes

SbPlane plane
 
SbPlane nonOrientPlane
 
SbBool orientToEye
 
SbBool needSetup
 
SbVec3f lastPoint
 
- Protected Attributes inherited from SbProjector
SbViewVolume viewVol
 
SbMatrix worldToWorking
 
SbMatrix workingToWorld
 

Detailed Description

The SbPlaneProjector class projects 2D points to 3D points in a plane.

The 3D projection of the 2D coordinates is for this projector class constrained to lie inside a pre-defined 3D plane.

See also
SbLineProjector

Constructor & Destructor Documentation

◆ SbPlaneProjector() [1/2]

SbPlaneProjector::SbPlaneProjector ( const SbBool  orient = 0)

Constructor. Sets up a projection plane parallel with the XY-plane in world coordinates.

Referenced by copy().

◆ SbPlaneProjector() [2/2]

SbPlaneProjector::SbPlaneProjector ( const SbPlane plane,
const SbBool  orient = 0 
)

Constructor taking an explicit projection plane definition.

Member Function Documentation

◆ copy()

SbProjector * SbPlaneProjector::copy ( void  ) const
virtual

Construct and return a copy of this projector. The caller is responsible for destructing the new instance.

Note that if the Coin library has been built as a DLL under Microsoft Windows and you use this method from application code, you must make sure that both the Coin DLL and the application executable is using the same instance of a C Run-Time (CRT) library. Otherwise, you will get memory heap corruption upon deallocating the returned instances, eventually leading to mysterious crashes.

Implements SbProjector.

References SbPlaneProjector().

◆ project()

SbVec3f SbPlaneProjector::project ( const SbVec2f point)
virtual

◆ setPlane()

void SbPlaneProjector::setPlane ( const SbPlane planeref)

◆ getPlane()

const SbPlane & SbPlaneProjector::getPlane ( void  ) const

Returns the current projection plane.

References plane.

◆ setOrientToEye()

void SbPlaneProjector::setOrientToEye ( const SbBool  orienttoeye)

Sets whether or not the plane should always be oriented towards the "eye" of the viewer.

References needSetup, and orientToEye.

◆ isOrientToEye()

SbBool SbPlaneProjector::isOrientToEye ( void  ) const

Returns the state of the plane orientation flag.

References orientToEye.

◆ getVector() [1/2]

SbVec3f SbPlaneProjector::getVector ( const SbVec2f viewpos1,
const SbVec2f viewpos2 
)
virtual

Returns a vector between the projected 3D points of viewpos1 and viewpos2.

References lastPoint, and project().

◆ getVector() [2/2]

SbVec3f SbPlaneProjector::getVector ( const SbVec2f viewpos)
virtual

Returns a vector between the last projected point and the projected 3D point of viewpos.

References lastPoint, and project().

◆ setStartPosition() [1/2]

void SbPlaneProjector::setStartPosition ( const SbVec2f viewpos)

Explicitly set position of initial projection, so we get correct values for later calls to getVector() etc.

References lastPoint, and project().

◆ setStartPosition() [2/2]

void SbPlaneProjector::setStartPosition ( const SbVec3f point)

Explicitly set position of initial projection, so we get correct values for later calls to getVector() etc.

References lastPoint.

◆ setupPlane()

void SbPlaneProjector::setupPlane ( void  )
protected

Member Data Documentation

◆ plane

SbPlaneProjector::plane
protected

The projection plane.

Referenced by getPlane(), project(), setPlane(), and setupPlane().

◆ nonOrientPlane

SbPlaneProjector::nonOrientPlane
protected

The "original" plane which was set (as opposed to the recalculated projection plane according to the SbPlaneProjector::orientToEye setting).

Referenced by setPlane(), and setupPlane().

◆ orientToEye

SbPlaneProjector::orientToEye
protected

Which direction the plane is oriented.

Referenced by isOrientToEye(), setOrientToEye(), and setupPlane().

◆ needSetup

SbPlaneProjector::needSetup
protected

Set to TRUE whenever the plane needs to be recalculated according to the setting of the SbPlaneProjector::orientToEye flag.

Referenced by project(), setOrientToEye(), setPlane(), and setupPlane().

◆ lastPoint

SbPlaneProjector::lastPoint
protected

Stores the previously projected 3D point.

Referenced by getVector(), and setStartPosition().


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

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