#include "common.h"
#include "cstring.h"
#include "cyber.h"
#include "disk.h"
#include "floating.h"
#include "frame.h"
#include "graph.h"
#include "gui.h"
#include "vector.h"
#include "view.h"
#include "zoom.h"
#include "polygon.h"
#include "sphcoord.h"


//  Prototypes from drawpoly.c

typedef struct {
bool  good;   //  whether it should be drawn
point start,  //  start point of drag
      end;    //  current or end point of drag
image prev,   //  previous vertex of polygon
      next;   //  next vertex of polygon
rect  drew;   //  bounding rectangle of all drawn segments
} twang;

void projearth(const projection *Proj, const polygon **P, int PT, image *D);
bool clicktoearth(const mouseclick *M, polypoint *L);
void lookatpoly(projection *Proj, const polygons **Py, int POLY, int PT);

void Display(window *W);


//  Prototypes from editpoly.c

bool DoContent(mouseclick *M);
bool MapWheel(window *W, short DX, short DY);