circ.h

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/*
** ---------------------------------------------------------------
** circ.h  -  Circle primitive class definition.
**
** ---------------------------------------------------------------
*/

#ifndef _CIRC_H
#define _CIRC_H

/*
** ---------------------------------------------------------------
** Used global definitions:
**
*/
#include <stdio.h>  /* FILE */
#include "prm.h"

class Circ : public Prm
{

 protected:
/*
** ---------------------------------------------------------------
** Protected constants:
*/
  static const int CIRC_SEGS;

  static const double M_PI;

/*
** ---------------------------------------------------------------
** Protected object private attributes:
**
*/
  Coord c;

  double r;

 public:
/*
** ---------------------------------------------------------------
** Public constructor and destructor functions:
**
*/
/* --------------------------------------------------------------- */
  Circ( );

/* --------------------------------------------------------------- */
  Circ( int back );

/* --------------------------------------------------------------- */
  virtual ~Circ( );

 protected:
/*
** ---------------------------------------------------------------
** Protected instance (object) functions:
**
*/
/* --------------------------------------------------------------- */
  void GetLateralNormal( Coord* p, Coord* normal );

 public:
/*
** ---------------------------------------------------------------
** Public instance (object) functions
** (implemented in the derived class):
**
*/
/* --------------------------------------------------------------- */
  void Read( FILE* fd );

/* --------------------------------------------------------------- */
  void Write( FILE* fd );

/* --------------------------------------------------------------- */
  int GetNPts( void );

/* --------------------------------------------------------------- */
  void SetCoords( int id, double x, double y );

/* --------------------------------------------------------------- */
  void GetCoords( int id, double* x, double* y );

/* --------------------------------------------------------------- */
  void Set1stPt( double x, double y );

/* --------------------------------------------------------------- */
  void Set2ndPt( double x, double y );

/* --------------------------------------------------------------- */
  int PickArea( double x, double y );

/* --------------------------------------------------------------- */
  int PickVertex( double x, double y, double tol, int* id );

/* --------------------------------------------------------------- */
  int PickSide( double x, double y, double tol, int* id );

/* --------------------------------------------------------------- */
  void Translate( double dx, double dy );

/* --------------------------------------------------------------- */
  void TranslateVertex( int id, double dx, double dy );

/* --------------------------------------------------------------- */
  void TranslateSide( int id, double dx, double dy );

/* --------------------------------------------------------------- */
  void GetBox( double* xmin, double* xmax, double* ymin, double* ymax );

/* --------------------------------------------------------------- */
  void DisplayBoundary( void );

/* --------------------------------------------------------------- */
  void DisplayInterior( void );

/* --------------------------------------------------------------- */
  void DisplaySolid( void );

/* --------------------------------------------------------------- */
  void HighltSolid( void );

/* --------------------------------------------------------------- */
  void DisplayZbuffer( void );

};

#endif

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