---

Circle Class Reference

#include <Geometry.h>

Collaboration diagram for Circle:

[legend]List of all members.

Public Methods
	Circle ()
	Circle (VecPosition pos, double dR)
void	show (ostream &os=cout)
bool	setCircle (VecPosition pos, double dR)
bool	setRadius (double dR)
double	getRadius ()
bool	setCenter (VecPosition pos)
VecPosition	getCenter ()
double	getCircumference ()
double	getArea ()
bool	isInside (VecPosition pos)
int	getIntersectionPoints (Circle c, VecPosition *p1, VecPosition *p2)
double	getIntersectionArea (Circle c)
Private Attributes
VecPosition	m_posCenter
double	m_dRadius

---

Detailed Description

This class represents a circle. A circle is defined by one VecPosition (which denotes the center) and its radius.

Definition at line 229 of file Geometry.h.

---

Constructor & Destructor Documentation

Circle::Circle (    )

This is the constructor of a circle which initializes a circle with a radius of zero. Definition at line 1155 of file Geometry.cpp. References setCircle().

Circle::Circle (  VecPosition    pos, double    dR )

This is the constructor of a circle. Parameters: pos  first point that defines the center of circle dR  the radius of the circle Returns: circle with pos as center and radius as radius Definition at line 1148 of file Geometry.cpp. References setCircle().

---

Member Function Documentation

double Circle::getArea (    )

This method returns the area inside the circle. Returns: area inside the circle Definition at line 1228 of file Geometry.cpp. References getRadius().

VecPosition Circle::getCenter (    )

This method returns the center of the circle. Returns: center of the circle Definition at line 1214 of file Geometry.cpp. References m_posCenter. Referenced by Line::getCircleIntersectionPoints(), getIntersectionArea(), and getIntersectionPoints().

double Circle::getCircumference (    )

This method returns the circumference of the circle. Returns: circumference of the circle Definition at line 1221 of file Geometry.cpp. References getRadius().

double Circle::getIntersectionArea (  Circle    c )

This method returns the size of the intersection area of two circles. Parameters: c  circle with which intersection should be determined Returns: size of the intersection area. Definition at line 1305 of file Geometry.cpp. References AngDeg, getCenter(), VecPosition::getDistanceTo(), getIntersectionPoints(), getRadius(), VecPosition::getVecPositionOnLineFraction(), and min().

int Circle::getIntersectionPoints (  Circle    c, VecPosition *    p1, VecPosition *    p2 )

This method returns the two possible intersection points between two circles. This method returns the number of solutions that were found. Parameters: c  circle with which intersection should be found p1  will be filled with first solution p2  will be filled with second solution Returns: number of solutions. Definition at line 1251 of file Geometry.cpp. References getCenter(), getRadius(), VecPosition::getX(), VecPosition::getY(), and VecPosition::setVecPosition(). Referenced by getIntersectionArea().

double Circle::getRadius (    )

This method returns the radius of the circle. Returns: radius of the circle Definition at line 1198 of file Geometry.cpp. References m_dRadius. Referenced by getArea(), Line::getCircleIntersectionPoints(), getCircumference(), getIntersectionArea(), getIntersectionPoints(), and isInside().

bool Circle::isInside (  VecPosition    pos )

This method returns a boolean that indicates whether 'pos' is located inside the circle. Parameters: pos  position of which should be checked whether it is located in the circle Returns: bool indicating whether pos lies inside the circle Definition at line 1240 of file Geometry.cpp. References VecPosition::getDistanceTo(), getRadius(), and m_posCenter. Referenced by WorldModel::getNrInSetInCircle().

bool Circle::setCenter (  VecPosition    pos )

This method sets the center of the circle. Parameters: pos  new center of the circle Returns: bool indicating whether center was set Definition at line 1206 of file Geometry.cpp. References m_posCenter. Referenced by setCircle().

bool Circle::setCircle (  VecPosition    pos, double    dR )

This method sets the values of the circle. Parameters: pos  new center of the circle dR  new radius of the circle ( > 0 ) Returns: bool indicating whether radius was set Definition at line 1174 of file Geometry.cpp. References setCenter(), and setRadius(). Referenced by Circle().

bool Circle::setRadius (  double    dR )

This method sets the radius of the circle. Parameters: dR  new radius of the circle ( > 0 ) Returns: bool indicating whether radius was set Definition at line 1182 of file Geometry.cpp. References m_dRadius. Referenced by setCircle().

void Circle::show (  ostream &    os = cout )

This method prints the circle information to the specified output stream in the following format: "c: (c_x,c_y), r: rad" where (c_x,c_y) denotes the center of the circle and rad the radius. Parameters: os  output stream to which output is written. Definition at line 1164 of file Geometry.cpp. References m_dRadius, and m_posCenter.

---

Member Data Documentation

double Circle::m_dRadius [private]

Radius of the circle Definition at line 232 of file Geometry.h. Referenced by getRadius(), setRadius(), and show().

VecPosition Circle::m_posCenter [private]

Center of the circle Definition at line 231 of file Geometry.h. Referenced by getCenter(), isInside(), setCenter(), and show().

---

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

• Geometry.h
• Geometry.cpp

---