X-Git-Url: https://git.ucc.asn.au/?p=ipdf%2Fcode.git;a=blobdiff_plain;f=src%2Fquadtree.h;h=e35da2eab45182aba96509edd40f9b6cd3409b9a;hp=1443650e2373f423a198137cdbff39d529350bf9;hb=64b7c42c71c35d520424cf4ca5ecaa99faef8b26;hpb=5f25f354c33142215147b1fa3d18445bd0d7a6ee

diff --git a/src/quadtree.h b/src/quadtree.h
index 1443650..e35da2e 100644
--- a/src/quadtree.h
+++ b/src/quadtree.h
@@ -13,6 +13,7 @@ namespace IPDF
 
 	typedef int QuadTreeIndex;
 	static const QuadTreeIndex QUADTREE_EMPTY = -1;
+	class Document;
 
 	enum QuadTreeNodeChildren
 	{
@@ -39,6 +40,8 @@ namespace IPDF
 		unsigned object_begin;
 		// Last object in the node.
 		unsigned object_end;
+		// Linked list of "extra" nodes
+		QuadTreeIndex next_overlay;
 	};
 
 	struct QuadTree
@@ -46,6 +49,9 @@ namespace IPDF
 		QuadTree() : root_id(QUADTREE_EMPTY) {}
 		QuadTreeIndex root_id;
 		std::vector<QuadTreeNode> nodes;
+
+		QuadTreeIndex GetNeighbour(QuadTreeIndex start, int xdir, int ydir, Document *doc) const;
+
 	};
 
 	Rect TransformToQuadChild(const Rect& src, QuadTreeNodeChildren child_type);