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SbSphereSectionProjector Class Reference

The SbSphereSectionProjector projects 2D points to a sliced sphere. More...

#include <Inventor/projectors/SbSphereSectionProjector.h>

Inheritance diagram for SbSphereSectionProjector::

List of all members.

Public Methods
	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 Methods
virtual void	setupTolerance (void)
Protected Attributes
float	tolerance
float	tolDist
float	radialFactor
SbVec3f	planePoint
SbVec3f	planeDir
float	planeDist
SbPlane	tolPlane

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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

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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.

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

Constructor with explicit setting of the projection sphere.

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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. Reimplemented from SbProjector. Reimplemented in SbSpherePlaneProjector.

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. Reimplemented from SbProjector. Reimplemented in SbSpherePlaneProjector.

SbRotation SbSphereSectionProjector::getRotation (  const SbVec3f & point1, const SbVec3f & point2 )  [virtual]

Returns rotation on the projection surface which re-orients point1 to point2. Reimplemented from SbSphereProjector. Reimplemented in SbSpherePlaneProjector.

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.

float SbSphereSectionProjector::getTolerance (  void )  const

Returns edge tolerance for the sphere half.

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.

float SbSphereSectionProjector::getRadialFactor (  void )  const

Returns value of radialFactor. See also: setRadialFactor()

SbBool SbSphereSectionProjector::isWithinTolerance (  const SbVec3f & point )

Check if point is within the part of the sphere used for projections.

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.

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Member Data Documentation

SbSphereSectionProjector::tolerance [protected]

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

SbSphereSectionProjector::tolDist [protected]

Tolerance value multiplied with the sphere radius.

SbSphereSectionProjector::radialFactor [protected]

The radialfactor value decides how to calculate rotations outside of the sphere. See also: setRadialFactor()

SbSphereSectionProjector::planePoint [protected]

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

SbSphereSectionProjector::planeDir [protected]

Direction of cutting plane.

SbSphereSectionProjector::planeDist [protected]

Distance from plane to sphere center.

SbSphereSectionProjector::tolPlane [protected]

Defines the plane cutting the sphere into a projection part.

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

• SbSphereSectionProjector.cpp
• SbSphereSectionProjector.h

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