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

`#include <Inventor/projectors/SbSphereProjector.h>`

Inheritance diagram for SbSphereProjector:

List of all members.

## 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

## 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

## 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()

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.

void SbSphereProjector::setSphere | ( | const SbSphere & | sph | ) |

| Set sphere to project onto.

const SbSphere & SbSphereProjector::getSphere | ( | void |  | ) | const

| Returns projection 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`.

SbBool SbSphereProjector::isOrientToEye | ( | void |  | ) | const

| Returns the state of the sphere orientation flag.

void SbSphereProjector::setFront | ( | const SbBool | infront | ) |

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

SbBool SbSphereProjector::isFront | ( | void |  | ) | const

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

SbBool SbSphereProjector::isPointInFront | ( | const SbVec3f & | point | ) | const

| Check if point is on the frontside or the backside of the cylinder.

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.

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.

## Member Data Documentation

SbSphereProjector::intersectFront `[protected]`

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

SbSphereProjector::sphere `[protected]`

| Projection sphere.

SbSphereProjector::orientToEye `[protected]`

| Which direction the spherical surface is oriented.

SbSphereProjector::needSetup `[protected]`

| Set to `TRUE` whenever the projection surface needs to be recalculated according to the setting of the SbSphereProjector::orientToEye flag.

SbSphereProjector::lastPoint `[protected]`

| Stores the previously projected 3D point.

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

- SbSphereProjector.h
- SbSphereProjector.cpp