trusty (3) SbCylinderSectionProjector.3iv.gz
NAME
SbCylinderSectionProjector — cylinder-section projector
INHERITS FROM
SbProjector > SbCylinderProjector > SbCylinderSectionProjector
SYNOPSIS
#include <Inventor/projectors/SbCylinderSectionProjector.h>
Methods from class SbCylinderSectionProjector:
SbCylinderSectionProjector(float edgeTol = .9, SbBool orientToEye = TRUE)
SbCylinderSectionProjector(const SbCylinder &cyl, float edgeTol = .9, SbBool
orientToEye = TRUE)
~SbCylinderSectionProjector()
void setTolerance(float edgeTol)
float getTolerance() const
SbBool isWithinTolerance(const SbVec3f &point)
Methods from class SbCylinderProjector:
SbVec3f projectAndGetRotation(const SbVec2f &point, SbRotation &rot)
virtual SbRotation getRotation(const SbVec3f &point1, const SbVec3f &point2)
void setCylinder(const SbCylinder &cyl)
const SbCylinder & getCylinder() const
void setOrientToEye(SbBool orientToEye)
SbBool isOrientToEye() const
void setFront(SbBool isFront)
SbBool isFront() const
SbBool isPointInFront(const SbVec3f &point) const
Methods from class SbProjector:
virtual SbVec3f project(const SbVec2f &point)
virtual void setViewVolume(const SbViewVolume &vol)
const SbViewVolume & getViewVolume() const
virtual void setWorkingSpace(const SbMatrix &space)
const SbMatrix & getWorkingSpace() const
virtual SbProjector * copy() const
DESCRIPTION
SbCylinderSectionProjector projects a window space point (usually based on the mouse location) onto the
section of a cylinder that has been sliced by a plane. Two projected points can produce a rotation along
the cylinder's axis. The tolerance slice can be specified as a fraction of the radius of the cylinder.
The projection point will not extend beyond the sliced portion of the cylinder.
Incremental changes (delta rotation) can be computed during interactive sessions. Cylinder projectors are
typically used to write interactive 3D manipulators and viewers.
METHODS
SbCylinderSectionProjector(float edgeTol = .9, SbBool orientToEye = TRUE)
SbCylinderSectionProjector(const SbCylinder &cyl, float edgeTol = .9, SbBool
orientToEye = TRUE)
Constructors. The first uses a default cylinder aligned with the Y axis with radius 1.0; the cylinder
is supplied in the second. The position of the plane which slices the cylinder into a section is
specified as a fraction of the cylinder radius with the parameter edgeTol. A tolerance value of 1.0
positions the plane down the center of the cylinder. A tolerance value of 0.5 defines the longitudinal
plane halfway between the center and the outside edge of the cylinder. The default value is .9, so
that almost half the cylinder is in front of the plane. The orientToEye parameter determines whether
the plane 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.
~SbCylinderSectionProjector()
Destructor.
void setTolerance(float edgeTol)
float getTolerance() const
Set and get the edge tolerance as a fraction of the radius of the cylinder. If this is 1.0, the
projector is a half cylinder. If this is .1, the projector is a slice of the cylinder with radius
.1*radius. Default is .9.
SbBool isWithinTolerance(const SbVec3f &point)
Find whether this point on the cylinder or tolerance plane is within tolerance.
SEE ALSO
SbCylinderPlaneProjector, SbCylinderSheetProjector, SbLineProjector, SbPlaneProjector,
SbSpherePlaneProjector, SbSphereProjector, SbSphereSectionProjector, SbSphereSheetProjector
SbCylinderSectionProjector(3IV)()