---

rdPlane Class Reference

A class for representing a plane. More...

#include <rdPlane.h>

Inheritance diagram for rdPlane:

List of all members.

Public Member Functions
	rdPlane (double aPX, double aPY, double aPZ, double aP2X, double aP2Y, double aP2Z, double aP3X, double aP3Y, double aP3Z)
	Construct a plane from three points.
	rdPlane (double aPX, double aPY, double aPZ, const double aNormal[3])
	Construct a plane from a point and a normal.
virtual	~rdPlane ()
	Destructor.
void	setPoint (double aPX, double aPY, double aPZ)
	Set a point through which the plane passes.
void	getPoint (double rPoint[3]) const
	Get a point through which the plane passes.
void	setNormal (const double aNormal[3])
	Set the normal of the plane.
void	getNormal (double rNormal[3]) const
	Get the normal of the plane.
int	computeIntersection (const rdLine *aLine, double rPoint[3]) const
	Compute the intersection of a line with the plane.
Private Member Functions
void	setNull ()
	Set NULL values for all member variables.
Private Attributes
double	_point [3]
	Point through which the plane passes.
double	_normal [3]
	Unit vector normal to the plane.

---

Detailed Description

A class for representing a plane.

---

Constructor & Destructor Documentation

rdPlane::rdPlane (  double  aPX, double  aPY, double  aPZ, double  aP2X, double  aP2Y, double  aP2Z, double  aP3X, double  aP3Y, double  aP3Z )

Construct a plane from three points. Parameters: aPX  X component of a point through which the line passes. aPY  Y component of a point through which the line passes. aPZ  Z component of a point through which the line passes. aP2X  X component of a second point through which the line passes. aP2Y  Y component of a second point through which the line passes. aP2Z  Z component of a second point through which the line passes. aP3X  X component of a third point through which the line passes. aP3Y  Y component of a third point through which the line passes. aP3Z  Z component of a third point through which the line passes. aNormal  Unit vector normal to the plane.

rdPlane::rdPlane (  double  aPX, double  aPY, double  aPZ, const double  aNormal[3] )

Construct a plane from a point and a normal. Parameters: aPX  X component of a point through which the line passes. aPY  Y component of a point through which the line passes. aPZ  Z component of a point through which the line passes. aNormal  Unit vector normal to the plane.

---

Member Function Documentation

int rdPlane::computeIntersection (  const rdLine *  aLine, double  rPoint[3] )  const

Compute the intersection of a line with the plane. The line can either intersect the plane at a point, not intersect the plane at all, or be coincident with the plane. Parameters: aLine  Line. aPlane  Plane. rPoint  Point of intersection. rPoint is set to the "zero" point of the line in the event that line and plane are coincident; it is unchanged if the line and plane do not intersect. Returns: -1 if the line and plane do not intersect; 0 if the line and plane intersect at a point; 1 if the line is coincident with the plane.

void rdPlane::getNormal (  double  rNormal[3]  )  const

Get the normal of the plane. Parameters: aNormal  Normal of the plane.

void rdPlane::getPoint (  double  rPoint[3]  )  const

Get a point through which the plane passes. Parameters: aPoint  Point through which the plane passes.

void rdPlane::setNormal (  const double  aNormal[3]  )

Set the normal of the plane. Parameters: aNormal  Normal of the plane. If aNormal is normalized so that it is assured to be a unit vector.

void rdPlane::setPoint (  double  aPX, double  aPY, double  aPZ )

Set a point through which the plane passes. Parameters: aPX  X component of a point through which the line passes. aPY  Y component of a point through which the line passes. aPZ  Z component of a point through which the line passes. aPoint  Point through which the plane passes.

---

The documentation for this class was generated from the following files:

• rdPlane.h
• rdPlane.cpp

---