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The SbSphereSectionProjector projects 2D points to a sliced sphere.The projection sphere for this class is sliced by a clipping plane. Projections will be mapped to the remaining sphere part. More...
#include <Inventor/projectors/SbSphereSectionProjector.h>
Public Member Functions | |
SbSphereSectionProjector (const float edgetol=0.9f, const SbBool orienttoeye=TRUE) | |
SbSphereSectionProjector (const SbSphere &sph, 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 |
void | setRadialFactor (const float rad=0.0f) |
float | getRadialFactor (void) const |
SbBool | isWithinTolerance (const SbVec3f &point) |
Protected Member Functions | |
virtual void | setupTolerance (void) |
Protected Attributes | |
float | tolerance |
float | tolDist |
float | radialFactor |
SbVec3f | planePoint |
SbVec3f | planeDir |
float | planeDist |
SbPlane | tolPlane |
The SbSphereSectionProjector projects 2D points to a sliced sphere.
The projection sphere for this class is sliced by a clipping plane. Projections will be mapped to the remaining sphere part.
SbSphereSectionProjector::SbSphereSectionProjector | ( | const float | edgetol = 0.9f , |
const SbBool | orienttoeye = TRUE |
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) |
Default constructor. See SbSphereProjector::SbSphereProjector().
The edgetol value should be within <0, 1], and specifies how much of the sphere is used as a projection surface. 1.0 means the full front half is used.
Referenced by copy().
SbSphereSectionProjector::SbSphereSectionProjector | ( | const SbSphere & | sph, |
const float | edgetol = 0.9f , |
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const SbBool | orienttoeye = TRUE |
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) |
Constructor with explicit setting of the projection sphere.
SbProjector * SbSphereSectionProjector::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 is 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 SbSpherePlaneProjector.
References SbSphereSectionProjector().
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.
Reimplemented in SbSpherePlaneProjector.
References SbSphere::getCenter(), SbProjector::getWorkingLine(), SbSphere::intersect(), SbPlane::intersect(), SbSphereProjector::intersectSphereFront(), isWithinTolerance(), SbSphereProjector::lastPoint, SbSphereProjector::needSetup, SoDebugError::postWarning(), setupTolerance(), SbSphereProjector::sphere, and tolPlane.
SbRotation SbSphereSectionProjector::getRotation | ( | const SbVec3f & | point1, |
const SbVec3f & | point2 | ||
) | [virtual] |
Returns rotation on the projection surface which re-orients point1 to point2.
Implements SbSphereProjector.
Reimplemented in SbSpherePlaneProjector.
References SbSphere::getCenter(), and SbSphereProjector::sphere.
void SbSphereSectionProjector::setTolerance | ( | const float | edgetol | ) |
The edgetol value decides how much of the surface of the sphere is used for projection. 1.0 means the full sphere half is used.
References SbSphereProjector::needSetup, and tolerance.
float SbSphereSectionProjector::getTolerance | ( | void | ) | const |
Returns edge tolerance for the sphere half.
References tolerance.
void SbSphereSectionProjector::setRadialFactor | ( | const float | rad = 0.0f | ) |
Set up the controlling value for how the rotation calculation will be done "outside" the sphere.
A radialFactor equal to 0.0 will make the rotations be done like if they were done by dragging the sphere, while a value of 1.0 will make the rotation be around the axis from the viewpoint towards the sphere.
References radialFactor.
float SbSphereSectionProjector::getRadialFactor | ( | void | ) | const |
SbBool SbSphereSectionProjector::isWithinTolerance | ( | const SbVec3f & | point | ) |
Check if point is within the part of the sphere used for projections.
References SbSphereProjector::needSetup, planePoint, and setupTolerance().
Referenced by SbSpherePlaneProjector::getRotation(), project(), and SbSpherePlaneProjector::project().
void SbSphereSectionProjector::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.
References SbSphere::getCenter(), SbViewVolume::getProjectionDirection(), SbSphere::getRadius(), SbSphereProjector::intersectFront, SbMatrix::multDirMatrix(), SbSphereProjector::needSetup, SbVec3f::normalize(), SbSphereProjector::orientToEye, planeDir, planeDist, planePoint, SbVec3f::setValue(), SbSphereProjector::sphere, tolDist, tolerance, tolPlane, SbProjector::viewVol, and SbProjector::worldToWorking.
Referenced by isWithinTolerance(), project(), and SbSpherePlaneProjector::project().
SbSphereSectionProjector::tolerance [protected] |
Tolerance value, deciding how much of the half-sphere to do projections against.
Referenced by getTolerance(), setTolerance(), and setupTolerance().
SbSphereSectionProjector::tolDist [protected] |
Tolerance value multiplied with the sphere radius.
Referenced by SbSpherePlaneProjector::getRotation(), and setupTolerance().
SbSphereSectionProjector::radialFactor [protected] |
The radialfactor value decides how to calculate rotations outside of the sphere.
Referenced by getRadialFactor(), and setRadialFactor().
SbSphereSectionProjector::planePoint [protected] |
A point in the plane where the center of the sphere is.
Referenced by SbSpherePlaneProjector::getRotation(), isWithinTolerance(), and setupTolerance().
SbSphereSectionProjector::planeDir [protected] |
Direction of cutting plane.
Referenced by SbSpherePlaneProjector::getRotation(), and setupTolerance().
SbSphereSectionProjector::planeDist [protected] |
Distance from plane to sphere center.
Referenced by setupTolerance().
SbSphereSectionProjector::tolPlane [protected] |
Defines the plane cutting the sphere into a projection part.
Referenced by project(), SbSpherePlaneProjector::project(), and setupTolerance().
Copyright © 1998-2007 by Systems in Motion AS. All rights reserved.
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