X-Git-Url: https://fleuret.org/cgi-bin/gitweb/gitweb.cgi?a=blobdiff_plain;ds=inline;f=universe.h;h=07cf7f02b28b50de0731fdca10ad52f41451ecc2;hb=599bf3fa2eb01b05ec677b628e65adb2fe4f91c3;hp=74339a35f7d209df46cacf2678903b709208a014;hpb=3e51d77116e49ba279a6cbbf1dbbc893c4117eb4;p=universe.git

diff --git a/universe.h b/universe.h
index 74339a3..07cf7f0 100644
--- a/universe.h
+++ b/universe.h
@@ -8,32 +8,54 @@
 #include <iostream>
 #include <cmath>
 
-using namespace std;
-
 #include "misc.h"
-#include "simple_window.h"
+#include "canvas.h"
 #include "polygon.h"
 
+#ifdef X11_SUPPORT
+#include "simple_window.h"
+#endif
+
+using namespace std;
+
 class Universe {
-  scalar_t _xmax, _ymax;
+  scalar_t _width, _height;
 public:
   int _nb_max_polygons, _nb_polygons;
   Polygon **_polygons;
-  Universe(int nb_max_polygons, scalar_t xmax, scalar_t ymax);
+
+  inline scalar_t width() { return _width; }
+  inline scalar_t height() { return _height; }
+
+  Universe(int nb_max_polygons, scalar_t width, scalar_t height);
   // The destructor deletes all the added polygons
   ~Universe();
-  void initialize(Polygon *p);
+
+  void initialize_polygon(Polygon *p);
   void clear();
   void add_polygon(Polygon *p);
   bool collide(Polygon *p);
+
   // Compute collisions between projections of the polygons on a few
   // axis to speed up the computation
   void compute_pseudo_collisions(int nb_axis, int *nb_colliding_axis);
+  void apply_gravity(scalar_t dt, scalar_t fx, scalar_t fy);
   void apply_collision_forces(scalar_t dt);
   bool update(scalar_t dt);
+
   Polygon *pick_polygon(scalar_t x, scalar_t y);
+
+#ifdef XFIG_SUPPORT
   void print_xfig(XFigTracer *tracer);
+#endif
+
+#ifdef X11_SUPPORT
   void draw(SimpleWindow *window);
+#endif
+
+#ifdef CAIRO_SUPPORT
+  void draw(Canvas *canvas);
 };
+#endif
 
 #endif