2011-12-27 21:18:07 +00:00
commit 9f98ea7e22
192 changed files with 77747 additions and 0 deletions
@@ -0,0 +1,74 @@
+// File: crn_arealist.h - 2D shape algebra
+// See Copyright Notice and license at the end of inc/crnlib.h
+#pragma once
+
+namespace crnlib
+{
+   struct Area
+   {
+      struct Area *Pprev, *Pnext;
+
+      int x1, y1, x2, y2;
+      
+      uint get_width() const { return x2 - x1 + 1; }
+      uint get_height() const { return y2 - y1 + 1; }
+      uint get_area() const { return get_width() * get_height(); }
+   };
+
+   typedef Area * Area_Ptr;
+
+   struct Area_List
+   {
+      int total_areas;
+      int next_free;
+
+      Area *Phead, *Ptail, *Pfree;
+   };
+
+   typedef Area_List * Area_List_Ptr;
+
+   Area_List * Area_List_init(int max_areas);
+   void Area_List_deinit(Area_List* Pobj_base);
+
+   void Area_List_print(Area_List *Plist);
+
+   Area_List * Area_List_dup_new(Area_List *Plist,
+                                 int x_ofs, int y_ofs);
+                                 
+   uint Area_List_get_num(Area_List* Plist);                                 
+
+   // src and dst area lists must have the same number of total areas.
+   void Area_List_dup(Area_List *Psrc_list,
+                      Area_List *Pdst_list,
+                      int x_ofs, int y_ofs);
+
+   void Area_List_copy(Area_List *Psrc_list,
+                       Area_List *Pdst_list,
+                       int x_ofs, int y_ofs);
+
+   void Area_List_clear(Area_List *Plist);
+
+   void Area_List_set(Area_List *Plist,
+                      int x1, int y1, int x2, int y2);
+
+   // logical: x and (not y)
+   void Area_List_remove(Area_List *Plist,
+                         int x1, int y1, int x2, int y2);
+
+   // logical: x or y
+   void Area_List_insert(Area_List *Plist,
+                         int x1, int y1, int x2, int y2,
+                         bool combine); 
+
+   // logical: x and y
+   void Area_List_intersect_area(Area_List *Plist,
+                                 int x1, int y1, int x2, int y2);
+
+   // logical: x and y
+   void Area_List_intersect_Area_List(Area_List *Pouter_list,
+                                      Area_List *Pinner_list,
+                                      Area_List *Pdst_list);
+
+   Area_List_Ptr Area_List_create_optimal(Area_List_Ptr Plist);
+
+} // namespace crnlib