NAME
SbCylinderSectionProjector -
The SbCylinderSectionProjector projects 2D points to a sliced cylinder.
The projection cylinder for this class is sliced by a clipping plane
parallel to its height axis. Projections will be mapped to the
remaining cylinder part.
SYNOPSIS
#include <Inventor/projectors/SbCylinderSectionProjector.h>
Inherits SbCylinderProjector.
Inherited by SbCylinderPlaneProjector.
Public Member Functions
SbCylinderSectionProjector (const float edgetol=0.9f, const SbBool
orienttoeye=1)
SbCylinderSectionProjector (const SbCylinder &cyl, const float
edgetol=0.9f, const SbBool orienttoeye=1)
virtual SbProjector * copy (void) const
virtual SbVec3f project (const SbVec2f &point)
virtual SbRotation getRotation (const SbVec3f &point1, const SbVec3f
&point2)
void setTolerance (const float edgetol)
float getTolerance (void) const
SbBool isWithinTolerance (const SbVec3f &point)
Protected Member Functions
virtual void setupTolerance (void)
Protected Attributes
float tolerance
float tolDist
SbVec3f planeDir
SbLine planeLine
float planeDist
SbPlane tolPlane
Detailed Description
The SbCylinderSectionProjector projects 2D points to a sliced cylinder.
The projection cylinder for this class is sliced by a clipping plane
parallel to its height axis. Projections will be mapped to the
remaining cylinder part.
See also:
SbSphereSectionProjector
Constructor & Destructor Documentation
SbCylinderSectionProjector::SbCylinderSectionProjector (const float edgetol
= 0.9f, const SbBool orienttoeye = 1) Default constructor. See
SbCylinderProjector::SbCylinderProjector().
The edgetol value should be within <0, 1], and specifies how much of
the cylinder is used as a projection surface. 1.0 means the full front
half is used.
SbCylinderSectionProjector::SbCylinderSectionProjector (const SbCylinder &
cyl, const float edgetol = 0.9f, const SbBool orienttoeye = 1)
Constructor with explicit setting of the projection cylinder.
Member Function Documentation
SbProjector * SbCylinderSectionProjector::copy (void) const [virtual]
Construct and return a copy of this projector. The caller is
responsible for destructing the new instance.
Note that if the Coin library has been built as a DLL under Microsoft
Windows and you use this method from application code, you must make
sure that both the Coin DLL and the application executable is using the
same instance of a C Run-Time (CRT) library. Otherwise, you will get
memory heap corruption upon deallocating the returned instances,
eventually leading to mysterious crashes.
Implements SbProjector.
Reimplemented in SbCylinderPlaneProjector.
SbVec3f SbCylinderSectionProjector::project (const SbVec2f & point)
[virtual] Project the 2D point from normalized viewport coordinates to
a 3D point. The mapping will be done in accordance with the type of the
projector.
Implements SbCylinderProjector.
Reimplemented in SbCylinderPlaneProjector.
SbRotation SbCylinderSectionProjector::getRotation (const SbVec3f & point1,
const SbVec3f & point2) [virtual] Returns rotation on the projection
surface which re-orients point1 to point2.
Implements SbCylinderProjector.
Reimplemented in SbCylinderPlaneProjector.
void SbCylinderSectionProjector::setTolerance (const float edgetol) The
edgetol value decides how much of the surface of the cylinder is used
for projection. 1.0 means the full cylinder half is used.
float SbCylinderSectionProjector::getTolerance (void) const Returns edge
tolerance for the cylinder half.
SbBool SbCylinderSectionProjector::isWithinTolerance (const SbVec3f &
point) Check if point is within the part of the cylinder used for
projections.
void SbCylinderSectionProjector::setupTolerance (void) [protected, virtual]
Recalculate the internal projection surface settings. Needs to be done
if any of the parameters influencing the projection surface have been
changed from subclasses without using the access methods.
Member Data Documentation
SbCylinderSectionProjector::tolerance [protected] Tolerance value, deciding
how much of the half-cylinder to do projections against.
SbCylinderSectionProjector::tolDist [protected] Tolerance value multiplied
with the cylinder radius.
SbCylinderSectionProjector::planeDir [protected] Direction of cutting
plane.
SbCylinderSectionProjector::planeLine [protected] A line within the plane
which is parallel to the cylinder axis.
SbCylinderSectionProjector::planeDist [protected] Distance from plane to
cylinder axis.
SbCylinderSectionProjector::tolPlane [protected] Defines the plane cutting
the cylinder into a projection part.
Author
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