SbSphereSheetProjector Class Reference
[Projectors]
Sphere-sheet projector. More...
#include <Inventor/projectors/SbSphereSheetProjector.h>
Public Member Functions | |
| SbSphereSheetProjector (SbBool orientToEye=TRUE) | |
| SbSphereSheetProjector (const SbSphere &sph, SbBool orientToEye=TRUE) | |
| ~SbSphereSheetProjector () | |
| virtual SbProjector * | copy () const |
| virtual SbVec3f | project (const SbVec2f &point) |
| virtual SbVec3f | intersect (const SbLine &line) |
| virtual SbRotation | getRotation (const SbVec3f &point1, const SbVec3f &point2) |
Detailed Description
Sphere-sheet projector.
SbSphereSheetProjector projects a window space point (usually based on the mouse location) onto the surface of a sphere with a hyperbolic sheet draped over it. This allows smooth transitions onto and off of the sphere. Two projected points can produce a rotation about the sphere's center. When the mouse position projects on to the sheet, the rotations will be as if the sheet 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.
SEE ALSO
SbCylinderProjector, SbCylinderPlaneProjector, SbCylinderSectionProjector, SbCylinderSheetProjector, SbLineProjector, SbPlaneProjector, SbSpherePlaneProjector
Constructor & Destructor Documentation
| SbSphereSheetProjector::SbSphereSheetProjector | ( | SbBool | orientToEye = TRUE |
) |
Constructor that uses a default sphere centered at the origin with radius 1.0.
The orientToEye parameter determines whether the sheet is perpendicular to the eye, or perpendicular to the sphere's Z axis. Setting that parameter to TRUE (the default) specifies that the sheet be perpendicular to the eye, which is most often the desired behavior.
The default view volume is undefined, and the working space is identity.
Constructor that uses a supplied sphere.
The orientToEye parameter determines whether the sheet is perpendicular to the eye, or perpendicular to the sphere's Z axis. Setting that parameter to TRUE (the default) specifies that the sheet be perpendicular to the eye, which is most often the desired behavior.
The default view volume is undefined, and the working space is identity.
| SbSphereSheetProjector::~SbSphereSheetProjector | ( | ) | [inline] |
Destructor.
Member Function Documentation
| virtual SbProjector* SbSphereSheetProjector::copy | ( | ) | const [virtual] |
Returns an instance that is a copy of this instance.
The caller is responsible for deleting the copy when done.
Implements SbProjector.
| virtual SbRotation SbSphereSheetProjector::getRotation | ( | const SbVec3f & | point1, | |
| const SbVec3f & | point2 | |||
| ) | [virtual] |
Computes a rotation based on two points on this projector.
Implements SbSphereProjector.
Applies the projector using the given line in world coordinates, returning the point in three dimensions that it projects to.
New for v3.0.
Implements SbSphereProjector.
Applies the projector using the given point, returning the point in three dimensions that it projects to.
The point should be normalized from 0-1, with (0,0) at the lower-left.
Implements SbSphereProjector.
The documentation for this class was generated from the following file:
- Inventor/projectors/SbSphereSheetProjector.h