SbCylinderSheetProjector Class Reference
[Projectors]
Cylinder-sheet projector. More...
#include <Inventor/projectors/SbCylinderSheetProjector.h>
Public Member Functions | |
| SbCylinderSheetProjector (SbBool orientToEye=TRUE) | |
| SbCylinderSheetProjector (const SbCylinder &cyl, SbBool orientToEye=TRUE) | |
| ~SbCylinderSheetProjector () | |
| 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
Cylinder-sheet projector.
SbCylinderSheetProjector projects a window space point (usually based on the mouse location) onto the surface of a cylinder with a hyperbolic sheet draped over it. This allows smooth transitions onto and off of the cylinder. Two projected points can produce a rotation along the cylinder's axis. When the mouse position projects on to the sheet, the rotations will be as if the sheet is being dragged, causing the cylinder to roll beneath it.
Incremental changes (delta rotation) can be computed during interactive sessions. Cylinder projectors are typically used to write interactive 3D manipulators and viewers.
SEE ALSO
SbCylinderSectionProjector, SbCylinderPlaneProjector, SbLineProjector, SbPlaneProjector, SbSpherePlaneProjector, SbSphereProjector, SbSphereSectionProjector, SbSphereSheetProjector
Constructor & Destructor Documentation
| SbCylinderSheetProjector::SbCylinderSheetProjector | ( | SbBool | orientToEye = TRUE |
) |
Constructor that uses a default cylinder aligned with the Y axis with radius 1.0.
The orientToEye parameter determines whether the sheet is perpendicular to the eye, or perpendicular to the cylinder'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.
| SbCylinderSheetProjector::SbCylinderSheetProjector | ( | const SbCylinder & | cyl, | |
| SbBool | orientToEye = TRUE | |||
| ) |
Constructor.
The orientToEye parameter determines whether the sheet is perpendicular to the eye, or perpendicular to the cylinder'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.
| SbCylinderSheetProjector::~SbCylinderSheetProjector | ( | ) | [inline] |
Destructor.
Member Function Documentation
| virtual SbProjector* SbCylinderSheetProjector::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 SbCylinderSheetProjector::getRotation | ( | const SbVec3f & | point1, | |
| const SbVec3f & | point2 | |||
| ) | [virtual] |
Computes a rotation based on two points on this projector.
Implements SbCylinderProjector.
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 SbCylinderProjector.
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 SbCylinderProjector.
The documentation for this class was generated from the following file:
- Inventor/projectors/SbCylinderSheetProjector.h