lib/gfxpoly/active.h

   1 #ifndef __active_h__
   2 #define __active_h__
   3
   4 #include "poly.h"
   5 //#include "splay.h"
   6
   7 typedef struct _actlist
   8 {
   9     //SPLAY_HEAD(root, actnode_t);
  10     segment_t*list;
  11 } actlist_t;
  12
  13 actlist_t* actlist_new();
  14 void actlist_destroy(actlist_t*a);
  15 void actlist_verify_and_dump(actlist_t*a, int32_t y);
  16 segment_t* actlist_find(actlist_t*a, point_t p1, point_t p2);  // finds segment immediately to the left of p1 (breaking ties w/ p2)
  17 void actlist_insert(actlist_t*a, point_t p, segment_t*s);
  18 void actlist_delete(actlist_t*a, segment_t*s);
  19 void actlist_swap(actlist_t*a, segment_t*s1, segment_t*s2);
  20 segment_t* actlist_left(actlist_t*a, segment_t*s);
  21 segment_t* actlist_leftmost(actlist_t*a);
  22 segment_t* actlist_right(actlist_t*a, segment_t*s);
  23
  24 #endif