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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>
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 SbSphere & | getSphere (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 |
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.
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.
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.
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 SoRotateSphericalDragger::drag(), and projectAndGetRotation().
void SbSphereProjector::setSphere | ( | const SbSphere & | sph | ) |
Set sphere to project onto.
References needSetup, and sphere.
Referenced by SoTransformerDragger::dragStart(), and SoRotateSphericalDragger::dragStart().
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 |
Check if point is on the frontside or the backside of the cylinder.
References SbVec3f::dot(), SbSphere::getCenter(), SbViewVolume::getProjectionPoint(), SbViewVolume::getProjectionType(), SbProjector::getViewVolume(), SbMatrix::multDirMatrix(), SbMatrix::multVecMatrix(), SbViewVolume::PERSPECTIVE, sphere, SbProjector::worldToWorking, and SbViewVolume::zVector().
Referenced by SoTransformerDragger::dragStart(), and SoRotateSphericalDragger::dragStart().
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 SoRotateSphericalDragger::drag(), SoTransformerDragger::dragStart(), and SoRotateSphericalDragger::dragStart().
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().
SbSphereProjector::intersectFront [protected] |
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().
SbSphereProjector::sphere [protected] |
Projection sphere.
Referenced by SbSphereSectionProjector::getRotation(), SbSpherePlaneProjector::getRotation(), getSphere(), intersectSphereFront(), isPointInFront(), SbSphereSheetProjector::project(), SbSphereSectionProjector::project(), setSphere(), SbSphereSheetProjector::setupPlane(), and SbSphereSectionProjector::setupTolerance().
SbSphereProjector::orientToEye [protected] |
Which direction the spherical surface is oriented.
Referenced by isOrientToEye(), setOrientToEye(), SbSphereSheetProjector::setupPlane(), and SbSphereSectionProjector::setupTolerance().
SbSphereProjector::needSetup [protected] |
Set to TRUE
whenever the projection surface needs to be recalculated according to the setting of the SbSphereProjector::orientToEye flag.
Referenced by SbSphereSheetProjector::getRotation(), SbSphereSectionProjector::isWithinTolerance(), SbSphereSheetProjector::project(), SbSphereSectionProjector::project(), SbSpherePlaneProjector::project(), setFront(), setOrientToEye(), setSphere(), SbSphereSectionProjector::setTolerance(), SbSphereSheetProjector::setupPlane(), SbSphereSectionProjector::setupTolerance(), and setWorkingSpace().
SbSphereProjector::lastPoint [protected] |
Stores the previously projected 3D point.
Referenced by SbSphereSheetProjector::project(), SbSphereSectionProjector::project(), SbSpherePlaneProjector::project(), and projectAndGetRotation().
Copyright © 1998-2007 by Systems in Motion AS. All rights reserved.
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