Cylinder-sheet projector. More...

#include <Inventor/projectors/SbCylinderSheetProjector.h>

Inheritance diagram for SbCylinderSheetProjector:

Public Member Functions
	SbCylinderSheetProjector (SbBool orientToEye=TRUE)
	SbCylinderSheetProjector (const SbCylinder &cyl, SbBool orientToEye=TRUE)
	Constructors.
	~SbCylinderSheetProjector ()
	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 SbRotation	getRotation (const SbVec3f &point1, const SbVec3f &point2)
	Computes a rotation based on two points on this projector.
Protected Member Functions
virtual void	setupPlane ()
	Sets up the tolerance plane.
Protected Attributes
SbVec3f	workingProjPoint
	The projection point in working space.
SbVec3f	planeDir
	Information about the plane used for intersection testing.
SbPlane	tolPlane
	the plane itself

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::SbCylinderSheetProjector ( SbBool orientToEye = TRUE )

See also:: SbCylinderSheetProjector(const SbCylinder &cyl,SbBool orientToEye)

SbCylinderSheetProjector::SbCylinderSheetProjector	(	const SbCylinder &	cyl,
		SbBool	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::~SbCylinderSheetProjector ( ) [inline]

Definition at line 110 of file SbCylinderSheetProjector.h.