Cylinder-sheet projector. More...
#include <Inventor/projectors/SbCylinderSheetProjector.h>
Public Member Functions | |
SbCylinderSheetProjector (SbBool orientToEye=TRUE) | |
Constructor that uses a default cylinder aligned with the Y axis with radius 1.0. | |
SbCylinderSheetProjector (const SbCylinder &cyl, SbBool orientToEye=TRUE) | |
Constructor. | |
~SbCylinderSheetProjector () | |
Destructor. | |
virtual SbProjector * | copy () const |
Returns an instance that is a copy of this instance. | |
virtual SbVec3f | project (const SbVec2f &point) |
Applies the projector using the given point, returning the point in three dimensions that it projects to. | |
virtual SbVec3f | intersect (const SbLine &line) |
Applies 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 SbCylinderProjector | |
virtual | ~SbCylinderProjector () |
Destructor. | |
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 | setCylinder (const SbCylinder &cyl) |
Sets the cylinder on which to project points. | |
const SbCylinder & | getCylinder () const |
Gets the cylinder 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 isFront) |
Sets whether the projector should intersect the half of the cylinder that faces the eye. | |
SbBool | isFront () const |
Gets whether the projector should intersect the half of the cylinder that faces the eye. | |
SbBool | isPointInFront (const SbVec3f &point) const |
Gets whether the projector should intersect the half of the cylinder that faces the eye. | |
virtual void | setWorkingSpace (const SbMatrix &space) |
Sets the transform space to work in. | |
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. | |
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.
SbCylinderSectionProjector, SbCylinderPlaneProjector, SbLineProjector, SbPlaneProjector, SbSpherePlaneProjector, SbSphereProjector, SbSphereSectionProjector, SbSphereSheetProjector
Definition at line 85 of file SbCylinderSheetProjector.h.
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 |
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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.
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inline |
Destructor.
Definition at line 115 of file SbCylinderSheetProjector.h.
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virtual |
Returns an instance that is a copy of this instance.
The caller is responsible for deleting the copy when done.
Implements SbProjector.
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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.