SbCylinderProjector Class Referenceabstract
Projector Classes

The SbCylinderProjector class is the abstract base class for mapping to cylindrical surfaces. 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 SbCylinderPlaneProjector, SbCylinderSectionProjector, 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()

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

pure virtual

Returns rotation on the projection surface which reorients point1 to point2.

Implemented in SbCylinderPlaneProjector, SbCylinderSectionProjector, 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 front side or the back side 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

SbBool SbCylinderProjector::intersectFront

protected

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

## cylinder

SbCylinder SbCylinderProjector::cylinder

protected

Specification of the projection cylinder.

## orientToEye

SbBool SbCylinderProjector::orientToEye

protected

Which direction the cylindrical surface is oriented.

## needSetup

SbBool SbCylinderProjector::needSetup

protected

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

## lastPoint

SbVec3f SbCylinderProjector::lastPoint

protected

Stores the previously projected 3D point.

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

- SbCylinderProjector.h
- SbCylinderProjector.cpp