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SbCylinderSectionProjector Class Reference

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

#include <Inventor/projectors/SbCylinderSectionProjector.h>

Inheritance diagram for SbCylinderSectionProjector:
SbCylinderProjector SbProjector SbCylinderPlaneProjector

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 SbProjectorcopy (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 SbCylindergetCylinder (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 SbViewVolumegetViewVolume (void) const
const SbMatrixgetWorkingSpace (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

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

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)

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 

Returns rotation on the projection surface which re-orients 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  )

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


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

◆ tolDist


Tolerance value multiplied with the cylinder radius.

◆ planeDir


Direction of cutting plane.

◆ planeLine


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

◆ planeDist


Distance from plane to cylinder axis.

◆ tolPlane


Defines the plane cutting the cylinder into a projection part.

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