Coin Logo http://www.sim.no
http://www.coin3d.org

SbSphereProjector Class Reference
[Projector classes (mostly for internal use)]

The SbSphereProjector class is the abstract base class for mapping to spherical surfaces.

The sphere projectors map 2D points to various surface types based on spherical shapes. More...

#include <Inventor/projectors/SbSphereProjector.h>

Inheritance diagram for SbSphereProjector:

SbProjector SbSphereSectionProjector SbSphereSheetProjector SbSpherePlaneProjector

List of all members.

Public Member Functions

SbVec3f projectAndGetRotation (const SbVec2f &point, SbRotation &rot)
virtual SbRotation getRotation (const SbVec3f &point1, const SbVec3f &point2)=0
void setSphere (const SbSphere &sph)
const SbSpheregetSphere (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)

Protected Member Functions

 SbSphereProjector (const SbBool orienttoeye)
 SbSphereProjector (const SbSphere &s, const SbBool orienttoeye)
SbBool intersectSphereFront (const SbLine &l, SbVec3f &result)

Protected Attributes

SbBool intersectFront
SbSphere sphere
SbBool orientToEye
SbBool needSetup
SbVec3f lastPoint


Detailed Description

The SbSphereProjector class is the abstract base class for mapping to spherical surfaces.

The sphere projectors map 2D points to various surface types based on spherical shapes.

See also:
SbCylinderProjector

Constructor & Destructor Documentation

SbSphereProjector::SbSphereProjector ( const SbBool  orienttoeye  )  [protected]

Default constructor sets up a sphere at the origin with radius 1.

SbSphereProjector::SbSphereProjector ( const SbSphere s,
const SbBool  orienttoeye 
) [protected]

Constructor taking an explicit sphere projection definition.


Member Function Documentation

SbVec3f SbSphereProjector::projectAndGetRotation ( const SbVec2f point,
SbRotation rot 
)

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

See also:
project(), getRotation()

References getRotation(), lastPoint, and SbProjector::project().

SbRotation SbSphereProjector::getRotation ( const SbVec3f point1,
const SbVec3f point2 
) [pure virtual]

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

Implemented in SbSpherePlaneProjector, SbSphereSectionProjector, and SbSphereSheetProjector.

Referenced by SoVRMLSphereSensor::drag(), SoRotateSphericalDragger::drag(), and projectAndGetRotation().

void SbSphereProjector::setSphere ( const SbSphere sph  ) 

const SbSphere & SbSphereProjector::getSphere ( void   )  const

Returns projection sphere.

References sphere.

void SbSphereProjector::setOrientToEye ( const SbBool  orienttoeye  ) 

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

References needSetup, and orientToEye.

SbBool SbSphereProjector::isOrientToEye ( void   )  const

Returns the state of the sphere orientation flag.

References orientToEye.

Referenced by SbSphereSheetProjector::project().

void SbSphereProjector::setFront ( const SbBool  infront  ) 

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

References intersectFront, and needSetup.

Referenced by SoTransformerDragger::dragStart(), and SoRotateSphericalDragger::dragStart().

SbBool SbSphereProjector::isFront ( void   )  const

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

References intersectFront.

Referenced by intersectSphereFront().

SbBool SbSphereProjector::isPointInFront ( const SbVec3f point  )  const

void SbSphereProjector::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.

References needSetup, and SbProjector::setWorkingSpace().

Referenced by SoVRMLSphereSensor::drag(), SoRotateSphericalDragger::drag(), SoVRMLSphereSensor::dragStart(), SoTransformerDragger::dragStart(), and SoRotateSphericalDragger::dragStart().

SbBool SbSphereProjector::intersectSphereFront ( const SbLine l,
SbVec3f result 
) [protected]

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

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

References SbSphere::intersect(), isFront(), and sphere.

Referenced by SbSphereSheetProjector::project(), SbSphereSectionProjector::project(), and SbSpherePlaneProjector::project().


Member Data Documentation

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

Referenced by isFront(), SbSphereSheetProjector::project(), setFront(), SbSphereSheetProjector::setupPlane(), and SbSphereSectionProjector::setupTolerance().

Which direction the spherical surface is oriented.

Referenced by isOrientToEye(), setOrientToEye(), SbSphereSheetProjector::setupPlane(), and SbSphereSectionProjector::setupTolerance().


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

Copyright © 1998-2007 by Systems in Motion AS. All rights reserved.

Generated on Mon Feb 23 16:33:41 2009 for Coin by Doxygen. 1.5.8