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

Public Member Functions | Protected Member Functions | Protected Attributes

SbSphereSectionProjector Class Reference

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>

Inheritance diagram for SbSphereSectionProjector:
SbSphereProjector SbProjector SbSpherePlaneProjector

List of all members.

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 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
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

Detailed Description

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.

See also:
SbCylinderSectionProjector

Constructor & Destructor Documentation

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

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,
const SbBool  orienttoeye = TRUE 
)

Constructor with explicit setting of the projection sphere.


Member Function Documentation

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().

SbVec3f SbSphereSectionProjector::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 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

Returns value of radialFactor.

See also:
setRadialFactor()

References radialFactor.

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]

Member Data Documentation

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

Referenced by getTolerance(), setTolerance(), and setupTolerance().

Tolerance value multiplied with the sphere radius.

Referenced by SbSpherePlaneProjector::getRotation(), and setupTolerance().

The radialfactor value decides how to calculate rotations outside of the sphere.

See also:
setRadialFactor()

Referenced by getRadialFactor(), and setRadialFactor().

A point in the plane where the center of the sphere is.

Referenced by SbSpherePlaneProjector::getRotation(), isWithinTolerance(), and setupTolerance().

Direction of cutting plane.

Referenced by SbSpherePlaneProjector::getRotation(), and setupTolerance().

Distance from plane to sphere center.

Referenced by setupTolerance().

Defines the plane cutting the sphere into a projection part.

Referenced by project(), SbSpherePlaneProjector::project(), and 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 28 2011 10:12:01 for Coin by Doxygen. 1.7.3