Cylinder-sheet projector. More...
#include <Inventor/projectors/SbCylinderSheetProjector.h>
Public Member Functions | |
| SbCylinderSheetProjector (bool orientToEye=TRUE) | |
| SbCylinderSheetProjector (const SbCylinder &cyl, bool orientToEye=TRUE) | |
| Constructors. More... | |
| ~SbCylinderSheetProjector () | |
| Destructor. More... | |
| virtual SbProjector * | copy () const |
| Returns an instance that is a copy of this instance. More... | |
| virtual SbVec3f | project (const SbVec2f &point) |
| Apply the projector using the given point, returning the point in three dimensions that it projects to. More... | |
| virtual SbRotation | getRotation (const SbVec3f &point1, const SbVec3f &point2) |
| Computes a rotation based on two points on this projector. More... | |
 Public Member Functions inherited from SbCylinderProjector | |
| ~SbCylinderProjector () | |
| Destructor. More... | |
| SbVec3f | projectAndGetRotation (const SbVec2f &point, SbRotation &rot) |
| Apply the projector using the given point, returning the point in three dimensions that it projects to. More... | |
| void | setCylinder (const SbCylinder &cyl) |
| Set and get the cylinder on which to project points. More... | |
| const SbCylinder & | getCylinder () const |
| Set and get the cylinder on which to project points. More... | |
| void | setOrientToEye (bool orientToEye) |
| Set and get whether the projector should always be oriented towards the eye. More... | |
| bool | isOrientToEye () const |
| Set and get whether the projector should always be oriented towards the eye. More... | |
| void | setFront (bool isFront) |
| Set and get whether the projector should intersect the half of the cylinder that faces the eye. More... | |
| bool | isFront () const |
| Set and get whether the projector should intersect the half of the cylinder that faces the eye. More... | |
| bool | isPointInFront (const SbVec3f &point) const |
| Set and get whether the projector should intersect the half of the cylinder that faces the eye. More... | |
| virtual void | setWorkingSpace (const SbMatrix &space) |
| Set the transform space to work in. More... | |
| Public Member Functions inherited from SbProjector | |
| virtual void | setViewVolume (const SbViewVolume &vol) |
| Set the view volume to use for the projection. More... | |
| const SbViewVolume & | getViewVolume () const |
| Get the view volume to use for the projection. More... | |
| const SbMatrix & | getWorkingSpace () const |
| Get the transform space to work in. More... | |
Protected Member Functions | |
| virtual void | setupPlane () |
| Sets up the tolerance plane. More... | |
| Protected Member Functions inherited from SbCylinderProjector | |
| SbCylinderProjector (bool orientToEye) | |
| Constructors The default cylinder to is centered about the Y axis and has a radius of 1.0. More... | |
| SbCylinderProjector (const SbCylinder &cyl, bool orientToEye) | |
| Protected Member Functions inherited from SbProjector | |
| SbProjector () | |
| Default constructor. More... | |
| virtual | ~SbProjector () |
| SbLine | getWorkingLine (const SbVec2f &point) const |
| Given this mouse point, return the line it projects to in working space. More... | |
Protected Attributes | |
| SbVec3f | workingProjPoint |
| The projection point in working space. More... | |
| SbVec3f | planeDir |
| Information about the plane used for intersection testing. More... | |
| SbPlane | tolPlane |
| the plane itself More... | |
| Protected Attributes inherited from SbCylinderProjector | |
| bool | intersectFront |
| Are intersections done on the front half ( if not, they're done on th e back half) of the cylinder? More... | |
| SbCylinder | cylinder |
| Cylinder for this projector. More... | |
| bool | orientToEye |
| TRUE if always oriented to eye. More... | |
| bool | needSetup |
| Set TRUE whenever cylinder, work space or orientation changes. More... | |
| SbVec3f | lastPoint |
| Cached last point on this projector. More... | |
| Protected Attributes inherited from SbProjector | |
| SbViewVolume | viewVol |
| SbMatrix | worldToWorking |
| SbMatrix | workingToWorld |
Detailed Description
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
Definition at line 89 of file SbCylinderSheetProjector.h.
Constructor & Destructor Documentation
◆ SbCylinderSheetProjector() [1/2]
| SbCylinderSheetProjector::SbCylinderSheetProjector | ( | bool | orientToEye = TRUE | ) |
◆ SbCylinderSheetProjector() [2/2]
| SbCylinderSheetProjector::SbCylinderSheetProjector | ( | const SbCylinder & | cyl, |
| bool | orientToEye = TRUE |
||
| ) |
The first uses a default cylinder aligned with the Y axis with radius 1.0; the cylinder is supplied in the second. 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()
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inline |
Definition at line 110 of file SbCylinderSheetProjector.h.
Member Function Documentation
◆ copy()
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virtual |
The caller is responsible for deleting the copy when done.
Implements SbProjector.
◆ getRotation()
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virtual |
Implements SbCylinderProjector.
◆ project()
The point should be normalized from 0-1, with (0,0) at the lower-left.
Implements SbCylinderProjector.
◆ setupPlane()
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protectedvirtual |
Member Data Documentation
◆ planeDir
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protected |
normal direction
Definition at line 134 of file SbCylinderSheetProjector.h.
◆ tolPlane
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protected |
Definition at line 135 of file SbCylinderSheetProjector.h.
◆ workingProjPoint
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protected |
Definition at line 131 of file SbCylinderSheetProjector.h.
The documentation for this class was generated from the following file:
- /home/jenkins/workspaces/mevislab/3.7.2_1/build/MeVis/ThirdParty/Sources/Inventor/include/Inventor/projectors/SbCylinderSheetProjector.h
