Sphereplane projector. More...
#include <Inventor/projectors/SbSpherePlaneProjector.h>
Public Member Functions  
SbSpherePlaneProjector (float edgeTol=0.9f, SbBool orientToEye=TRUE)  
Constructor that uses a default sphere centered at the origin with radius 1.0.  
SbSpherePlaneProjector (const SbSphere &sph, float edgeTol=0.9f, SbBool orientToEye=TRUE)  
Constructor that uses a supplied sphere.  
~SbSpherePlaneProjector ()  
Destructor.  
virtual SbProjector *  copy () const 
Returns an instance that is a copy of this instance.  
virtual SbVec3f  project (const SbVec2f &point) 
Apply the projector using the given point, returning the point in three dimensions that it projects to.  
virtual SbVec3f  intersect (const SbLine &line) 
Apply the projector using the given line in world coordinates, returning the point in three dimensions that it projects to.  
virtual SbRotation  getRotation (const SbVec3f &point1, const SbVec3f &point2) 
Computes a rotation based on two points on this projector.  
Public Member Functions inherited from SbSphereSectionProjector  
SbSphereSectionProjector (float edgeTol=0.9f, SbBool orientToEye=TRUE)  
Constructor that uses a default sphere centered at the origin with radius 1.0.  
SbSphereSectionProjector (const SbSphere &sph, float edgeTol=0.9f, SbBool orientToEye=TRUE)  
Constructor that uses a supplied sphere.  
~SbSphereSectionProjector ()  
Destructor.  
void  setTolerance (float edgeTol) 
Sets the edge tolerance as a fraction of the radius of the sphere.  
float  getTolerance () const 
Gets the edge tolerance as a fraction of the radius of the sphere.  
void  setRadialFactor (float rad=0.0) 
Sets the radial rotation factor.  
float  getRadialFactor () const 
Gets the radial rotation factor.  
SbBool  isWithinTolerance (const SbVec3f &point) 
Finds whether this point on the sphere or tolerance plane is within tolerance.  
Public Member Functions inherited from SbSphereProjector  
SbVec3f  projectAndGetRotation (const SbVec2f &point, SbRotation &rot) 
Applies the projector using the given point, returning the point in three dimensions that it projects to.  
void  setSphere (const SbSphere &sph) 
Sets the sphere on which to project points.  
const SbSphere &  getSphere () const 
Gets the sphere on which to project points.  
void  setOrientToEye (SbBool orientToEye) 
Sets whether the projector should always be oriented towards the eye.  
SbBool  isOrientToEye () const 
Gets whether the projector should always be oriented towards the eye.  
void  setFront (SbBool inFront) 
Sets whether the projector should intersect the half of the sphere that faces the eye.  
SbBool  isFront () const 
Gets whether the projector should intersect the half of the sphere that faces the eye.  
SbBool  isPointInFront (const SbVec3f &point) const 
Gets whether the projector should intersect the half of the sphere that faces the eye.  
virtual void  setWorkingSpace (const SbMatrix &space) 
Sets the transform space to work in.  
virtual  ~SbSphereProjector () 
Destructor.  
Public Member Functions inherited from SbProjector  
virtual  ~SbProjector () 
Destructor.  
virtual void  setViewVolume (const SbViewVolume &vol) 
Set the view volume to use for the projection.  
const SbViewVolume &  getViewVolume () const 
Get the view volume to use for the projection.  
const SbMatrix &  getWorkingSpace () const 
Get the transform space to work in.  
Sphereplane projector.
SbSpherePlaneProjector projects a window space point (usually based on the mouse location) onto a surface defined by a sphere and plane cutting through the sphere. Two projected points can produce a rotation about the sphere's center. When the mouse position projects onto the plane, the rotations will be as if the plane is being dragged, causing the sphere to roll beneath it.
Incremental changes (delta rotation) can be computed during interactive sessions. Sphere projectors are typically used to write interactive 3D manipulators and viewers.
SbCylinderProjector, SbCylinderPlaneProjector, SbCylinderSectionProjector, SbCylinderSheetProjector, SbLineProjector, SbPlaneProjector, SbSphereSheetProjector
Definition at line 83 of file SbSpherePlaneProjector.h.
SbSpherePlaneProjector::SbSpherePlaneProjector  (  float  edgeTol = 0.9f , 
SbBool  orientToEye = TRUE 

) 
Constructor that uses a default sphere centered at the origin with radius 1.0.
The position of the plane is specified as a fraction of the sphere radius with the parameter edgeTol. A tolerance value of 1.0 positions the plane down the center of the sphere. A tolerance value of 0.5 defines the longitudinal plane halfway between the center and the outside edge of the sphere. The default value is 0.9, so that almost half the sphere is in front of the plane. The orientToEye parameter determines whether the plane is perpendicular to the eye, or perpendicular to the sphere's Z axis. Setting that parameter to TRUE (the default) specifies that the plane be perpendicular to the eye, which is most often the desired behavior.
The default view volume is undefined, and the working space is identity.
SbSpherePlaneProjector::SbSpherePlaneProjector  (  const SbSphere &  sph, 
float  edgeTol = 0.9f , 

SbBool  orientToEye = TRUE 

) 
Constructor that uses a supplied sphere.
The position of the plane is specified as a fraction of the sphere radius with the parameter edgeTol. A tolerance value of 1.0 positions the plane down the center of the sphere. A tolerance value of 0.5 defines the longitudinal plane halfway between the center and the outside edge of the sphere. The default value is 0.9, so that almost half the sphere is in front of the plane. The orientToEye parameter determines whether the plane is perpendicular to the eye, or perpendicular to the sphere's Z axis. Setting that parameter to TRUE (the default) specifies that the plane be perpendicular to the eye, which is most often the desired behavior.
The default view volume is undefined, and the working space is identity.

inline 
Destructor.
Definition at line 122 of file SbSpherePlaneProjector.h.

virtual 
Returns an instance that is a copy of this instance.
The caller is responsible for deleting the copy when done.
Reimplemented from SbSphereSectionProjector.

virtual 
Computes a rotation based on two points on this projector.
Reimplemented from SbSphereSectionProjector.
Apply the projector using the given line in world coordinates, returning the point in three dimensions that it projects to.
New for v3.0.
Reimplemented from SbSphereSectionProjector.
Apply the projector using the given point, returning the point in three dimensions that it projects to.
The point should be normalized from 01, with (0,0) at the lowerleft.
Reimplemented from SbSphereSectionProjector.