Linux Certif

Toute la documentation sur la certification Linux LPI

SbCylinder.3sim

NAME

SbCylinder - The SbCylinder class is a representation of a cylinder.

This class is used within other classes in Coin. It contains data to represent a cylinder by an axis and a radius. The cylinder has no length/height value, which means it is treated as of infinite length.

SYNOPSIS

#include <Inventor/SbLinear.h>

Public Member Functions

SbCylinder (void)

SbCylinder (const SbLine &a, const float r)

void setValue (const SbLine &a, const float r)

void setAxis (const SbLine &a)

void setRadius (const float r)

const SbLine & getAxis (void) const

float getRadius (void) const

SbBool intersect (const SbLine &l, SbVec3f &intersection) const

SbBool intersect (const SbLine &l, SbVec3f &enter, SbVec3f &exit) const

void print (FILE *file) const

Detailed Description

The SbCylinder class is a representation of a cylinder.

This class is used within other classes in Coin. It contains data to represent a cylinder by an axis and a radius. The cylinder has no length/height value, which means it is treated as of infinite length.

See also:

SbLine, SbSphere

Constructor & Destructor Documentation

SbCylinder::SbCylinder (void)

The default constructor will make a cylinder of radius 1, center axis going through origo in the parallel direction of the positive y-axis.

References setValue().

SbCylinder::SbCylinder (const SbLine & a, const float r)

Construct and initialize an SbCylinder instance with the given axis a and radius r.

References setValue().

Member Function Documentation

void SbCylinder::setValue (const SbLine & a, const float r)

Set the axis and radius of the cylinder.

See also:

getAxis(), getRadius().

References setAxis(), and setRadius().

Referenced by SbCylinder().

void SbCylinder::setAxis (const SbLine & a)

Set the center axis of the cylinder.

See also:

setRadius(), getAxis().

References SbLine::getDirection(), SbVec3f::length(), and SoDebugError::postWarning().

Referenced by setValue().

void SbCylinder::setRadius (const float r)

Set the radius of the cylinder.

See also:

setAxis(), getRadius().

References SoDebugError::postWarning().

Referenced by setValue().

const SbLine & SbCylinder::getAxis (void) const

Return the line which is the center axis of the cylinder.

See also:

setAxis(), getRadius().

Referenced by SbCylinderSheetProjector::getRotation(), SbCylinderSectionProjector::getRotation(), SbCylinderPlaneProjector::getRotation(), SbCylinderProjector::isPointInFront(), print(), SbCylinderSheetProjector::setupPlane(), and SbCylinderSectionProjector::setupTolerance().

float SbCylinder::getRadius (void) const

Return radius of cylinder.

See also:

setRadius(), getAxis().

Referenced by SbCylinderPlaneProjector::getRotation(), print(), and SbCylinderSectionProjector::setupTolerance().

SbBool SbCylinder::intersect (const SbLine & l, SbVec3f & intersection) const

Finds the intersection point of the ray l on the cylinder where the ray enters, and return this point in intersection.

If the ray does not intersect the cylinder, FALSE is returned, otherwise we will return TRUE.

Referenced by SbCylinderPlaneProjector::getRotation(), SbCylinderProjector::intersectCylinderFront(), and SbCylinderSectionProjector::project().

SbBool SbCylinder::intersect (const SbLine & l, SbVec3f & enter, SbVec3f & exit) const

Find the intersection points of the ray l on the cylinder and return these in enter and exit. If the ray just 'grazes' the cylinder, the enter and exit points have equal values.

If the ray does not intersect the cylinder, FALSE is returned, otherwise we will return TRUE.

References SbVec3f::cross(), SbVec3f::dot(), SbLine::getClosestPoint(), SbLine::getDirection(), SbLine::getPosition(), SbVec3f::length(), SbVec3f::normalize(), and SoDebugError::postWarning().

void SbCylinder::print (FILE * fp) const

Dump the state of this object to the file stream. Only works in debug version of library, method does nothing in an optimized compile.

References getAxis(), getRadius(), and SbLine::print().

Author

Generated automatically by Doxygen for Coin from the source code.