SbCylinderSectionProjector Class Reference
Projector Classes

The SbCylinderSectionProjector projects 2D points to a sliced cylinder. More...

`#include <Inventor/projectors/SbCylinderSectionProjector.h>`

Inheritance diagram for SbCylinderSectionProjector:

## Public Member Functions

| SbCylinderSectionProjector (const float edgetol=0.9f, const SbBool orienttoeye=TRUE)
| SbCylinderSectionProjector (const SbCylinder &cyl, const float edgetol=0.9f, const SbBool orienttoeye=TRUE)
virtual SbProjector * | copy (void) const
virtual SbVec3f | project (const SbVec2f &point)
virtual SbRotation | getRotation (const SbVec3f &point1, const SbVec3f &point2)
void | setTolerance (const float edgetol)
float | getTolerance (void) const
SbBool | isWithinTolerance (const SbVec3f &point)
Public Member Functions inherited from SbCylinderProjector
SbVec3f | projectAndGetRotation (const SbVec2f &point, SbRotation &rot)
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 SbBool | tryProject (const SbVec2f &point, const float epsilon, SbVec3f &result)

## Protected Member Functions

virtual void | setupTolerance (void)
Protected Member Functions inherited from SbCylinderProjector
| 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

float | tolerance
float | tolDist
SbVec3f | planeDir
SbLine | planeLine
float | planeDist
SbPlane | tolPlane
Protected Attributes inherited from SbCylinderProjector
SbBool | intersectFront
SbCylinder | cylinder
SbBool | orientToEye
SbBool | needSetup
SbVec3f | lastPoint
Protected Attributes inherited from SbProjector
SbViewVolume | viewVol
SbMatrix | worldToWorking
SbMatrix | workingToWorld

## Detailed Description

The SbCylinderSectionProjector projects 2D points to a sliced cylinder.

The projection cylinder for this class is sliced by a clipping plane parallel to its height axis. Projections will be mapped to the remaining cylinder part.

See also
  SbSphereSectionProjector

## Constructor & Destructor Documentation

## SbCylinderSectionProjector() [1/2]

SbCylinderSectionProjector::SbCylinderSectionProjector | ( | const float | edgetol = 0.9f,
|  | const SbBool | orienttoeye = TRUE )

Default constructor. See SbCylinderProjector::SbCylinderProjector().

The edgetol value should be within <0, 1], and specifies how much of the cylinder is used as a projection surface. 1.0 means the full front half is used.

## SbCylinderSectionProjector() [2/2]

SbCylinderSectionProjector::SbCylinderSectionProjector | ( | const SbCylinder & | cyl,
|  | const float | edgetol = 0.9f,
|  | const SbBool | orienttoeye = TRUE )

Constructor with explicit setting of the projection cylinder.

## Member Function Documentation

## copy()

SbProjector * SbCylinderSectionProjector::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 are 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.

Reimplemented in SbCylinderPlaneProjector.

## project()

SbVec3f SbCylinderSectionProjector::project | ( | const SbVec2f & | point | ) |

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 SbCylinderProjector.

Reimplemented in SbCylinderPlaneProjector.

## getRotation()

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

virtual

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

Implements SbCylinderProjector.

Reimplemented in SbCylinderPlaneProjector.

## setTolerance()

void SbCylinderSectionProjector::setTolerance | ( | const float | edgetol | ) |

The edgetol value decides how much of the surface of the cylinder is used for projection. 1.0 means the full cylinder half is used.

## getTolerance()

float SbCylinderSectionProjector::getTolerance | ( | void |  | ) | const

Returns edge tolerance for the cylinder half.

## isWithinTolerance()

SbBool SbCylinderSectionProjector::isWithinTolerance | ( | const SbVec3f & | point | ) |

Check if point is within the part of the cylinder used for projections.

## setupTolerance()

void SbCylinderSectionProjector::setupTolerance | ( | void |  | ) |

protected virtual

Recalculate the internal projection surface settings. Needs to be done if any of the parameters influencing the projection surface have been changed from subclasses without using the access methods.

## Member Data Documentation

## tolerance

float SbCylinderSectionProjector::tolerance

protected

Tolerance value, deciding how much of the half-cylinder to do projections against.

## tolDist

float SbCylinderSectionProjector::tolDist

protected

Tolerance value multiplied with the cylinder radius.

## planeDir

SbVec3f SbCylinderSectionProjector::planeDir

protected

Direction of cutting plane.

## planeLine

SbLine SbCylinderSectionProjector::planeLine

protected

A line within the plane which is parallel to the cylinder axis.

## planeDist

float SbCylinderSectionProjector::planeDist

protected

Distance from plane to cylinder axis.

## tolPlane

SbPlane SbCylinderSectionProjector::tolPlane

protected

Defines the plane cutting the cylinder into a projection part.

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

- SbCylinderSectionProjector.h
- SbCylinderSectionProjector.cpp