using namespace std;
#include <gtkmm.h>
#include <math.h>

class boxworld
{
 public:
    int XDIM;   // virtual 3d dimensions
    int YDIM;
    int ZDIM;
// zoom ratio - right now, not tied to ZDIM, but probably should!
    double ZR;
    double tiltR;  // tilt angle in radians
// shortening ratio (scales z axis): usually should set to one:
    double SR;
    int xshift; // static display shift values
    int yshift;

    double toRadians(int degrees);
    void setSR(double s);
    void setZR(double z);
    void tilt(int d);
    boxworld(int xd, int yd, int zd, double zr0, int trd);
    boxworld(int xd, int yd, int zd, double zr0, int trd, double sr0);

// critical function to convert 3d coordinate to 2d coordinate stored in 
// x2 and y2; returns 0 on success
    int point(int x, int y, int z, int *x2, int *y2);

    // draws box onto win, using color gc, (x0,y0,z0) is top, left
    // near corner of box, and xd, yd, zd are the dimension of each edge
void drawbox(Glib::RefPtr<Gdk::Drawable> win,
  int x0, int y0, int z0, int xd, int yd, int zd,
	     Glib::RefPtr<Gdk::GC> gc);

// draws line on win, color gc, between (x0,y0,z0) and (x1,y1,z1)
void drawline(Glib::RefPtr<Gdk::Drawable> win, 
  int x0, int y0, int z0, int x1, int y1, int z1, 
	      Glib::RefPtr<Gdk::GC> gc);

// draws circle on win, color gc, filled=true||false, with center at
// (x0,y0,z0) and radius r
void drawcircle(Glib::RefPtr<Gdk::Drawable> win, bool filled,
		int x0, int y0, int z0, double r, Glib::RefPtr<Gdk::GC> gc);

double dscale(double x, double z0);

void drawimage(Glib::RefPtr<Gdk::Drawable> win,
		      Glib::RefPtr<Gdk::GC> gc,
		      Glib::RefPtr<Gdk::Pixbuf> image,
	       int x, int y, int z, int w, int h);

void drawimage(Glib::RefPtr<Gdk::Drawable> win,
		      Glib::RefPtr<Gdk::GC> gc,
		      Glib::RefPtr<Gdk::Pixbuf> image,
	       int x, int y, int z);

// suggested window width and height
 int wwidth();
 int wheight();

}; // boxworld