SbCylinderProjector Class Reference

The SbCylinderProjector class is the abstract base class for mapping to cylindrical surfaces.The cylinder projectors map 2D points to various surface types based on cylindrical shapes. More...

#include <Inventor/projectors/SbCylinderProjector.h>

Inheritance diagram for SbCylinderProjector:

Public Member Functions
virtual SbVec3f	project (const SbVec2f &point)=0
SbVec3f	projectAndGetRotation (const SbVec2f &point, SbRotation &rot)
virtual SbRotation	getRotation (const SbVec3f &point1, const SbVec3f &point2)=0
void	setCylinder (const SbCylinder &cyl)
const SbCylinder &	getCylinder (void) const
void	setOrientToEye (const SbBool orienttoeye)
SbBool	isOrientToEye (void) const
void	setFront (const SbBool infront)
SbBool	isFront (void) const
SbBool	isPointInFront (const SbVec3f &point) const
virtual void	setWorkingSpace (const SbMatrix &space)
Public Member Functions inherited from SbProjector
virtual void	setViewVolume (const SbViewVolume &vol)
const SbViewVolume &	getViewVolume (void) const
const SbMatrix &	getWorkingSpace (void) const
virtual SbProjector *	copy (void) const =0
virtual SbBool	tryProject (const SbVec2f &point, const float epsilon, SbVec3f &result)

Protected Member Functions
	SbCylinderProjector (const SbBool orienttoeye)
	SbCylinderProjector (const SbCylinder &cylinder, const SbBool orienttoeye)
SbBool	intersectCylinderFront (const SbLine &line, SbVec3f &result)
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
SbBool	intersectFront
SbCylinder	cylinder
SbBool	orientToEye
SbBool	needSetup
SbVec3f	lastPoint
Protected Attributes inherited from SbProjector
SbViewVolume	viewVol
SbMatrix	worldToWorking
SbMatrix	workingToWorld

Detailed Description

The SbCylinderProjector class is the abstract base class for mapping to cylindrical surfaces.

The cylinder projectors map 2D points to various surface types based on cylindrical shapes.

See also

SbSphereProjector

Constructor & Destructor Documentation

SbCylinderProjector() [1/2]

SbCylinderProjector::SbCylinderProjector ( const SbBool  orienttoeye )

protected

Default constructor sets up a cylinder along the Y axis with height 1.

SbCylinderProjector() [2/2]

SbCylinderProjector::SbCylinderProjector ( const SbCylinder &  cylinder, const SbBool  orienttoeye  )

protected

Constructor taking an explicit cylinder projection definition.

Member Function Documentation

project()

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

pure virtual

Project the 2D point from normalized viewport coordinates to a 3D point. The mapping will be done in accordance with the type of the projector.

Implements SbProjector.

Implemented in SbCylinderSectionProjector, SbCylinderPlaneProjector, and SbCylinderSheetProjector.

projectAndGetRotation()

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

Project the 2D point to a 3D coordinate on the cylindrical surface, and find the rotation from the last projection to this one.

See also

project(), getRotation()

getRotation()

SbRotation SbCylinderProjector::getRotation ( const SbVec3f &  point1, const SbVec3f &  point2  )

pure virtual

Returns rotation on the projection surface which re-orients point1 to point2.

Implemented in SbCylinderSectionProjector, SbCylinderPlaneProjector, and SbCylinderSheetProjector.

setCylinder()

void SbCylinderProjector::setCylinder

(

const SbCylinder &

cylinderref

)

Set cylinder to project onto.

getCylinder()

const SbCylinder & SbCylinderProjector::getCylinder

(

void

)

const

Returns projection cylinder.

setOrientToEye()

void SbCylinderProjector::setOrientToEye

(

const SbBool

orienttoeye

)

Sets whether or not the projection surface should be oriented towards the eye of the viewer.

isOrientToEye()

SbBool SbCylinderProjector::isOrientToEye

(

void

)

const

Returns the state of the cylinder orientation flag.

setFront()

void SbCylinderProjector::setFront

(

const SbBool

infront

)

Set whether to intersect with the outside of the cylinder (isfront equal to TRUE), or the inside.

isFront()

SbBool SbCylinderProjector::isFront

(

void

)

const

Returns value of the flag which decides whether to intersect with the outside or inside of the cylinder.

isPointInFront()

SbBool SbCylinderProjector::isPointInFront

(

const SbVec3f &

point

)

const

Check if point is on the frontside or the backside of the cylinder.

setWorkingSpace()

void SbCylinderProjector::setWorkingSpace ( const SbMatrix &  space )

virtual

Sets the matrix used for converting from the projector's coordinate system to the world coordinate system.

Reimplemented from SbProjector.

intersectCylinderFront()

SbBool SbCylinderProjector::intersectCylinderFront ( const SbLine &  line, SbVec3f &  result  )

protected

Intersect line with the SbCylinderProjector::cylinder and place the intersection point (if any) in result. Considers setFront() settings.

Returns TRUE if line actually hits the cylinder, FALSE if it doesn't intersect with it.

Member Data Documentation

intersectFront

SbCylinderProjector::intersectFront

protected

Flag which says whether or not we should map to the outside or inside of the cylinder surface.

cylinder

SbCylinderProjector::cylinder

protected

Specification of the projection cylinder.

orientToEye

SbCylinderProjector::orientToEye

protected

Which direction the cylindrical surface is oriented.

needSetup

SbCylinderProjector::needSetup

protected

Set to TRUE whenever the projection surface needs to be recalculated according to the setting of the SbCylinderProjector::orientToEye flag.

lastPoint

SbCylinderProjector::lastPoint

protected

Stores the previously projected 3D point.

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

• SbCylinderProjector.h
• SbCylinderProjector.cpp