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diff --git a/tilemgr/tiler.hh b/tilemgr/tiler.hh
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+/*
+* This file is part of rasdaman community.
+*
+* Rasdaman community is free software: you can redistribute it and/or modify
+* it under the terms of the GNU General Public License as published by
+* the Free Software Foundation, either version 3 of the License, or
+* (at your option) any later version.
+*
+* Rasdaman community is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+* GNU General Public License for more details.
+*
+* You should have received a copy of the GNU General Public License
+* along with rasdaman community.  If not, see <http://www.gnu.org/licenses/>.
+*
+* Copyright 2003, 2004, 2005, 2006, 2007, 2008, 2009 Peter Baumann /
+rasdaman GmbH.
+*
+* For more information please see <http://www.rasdaman.org>
+* or contact Peter Baumann via <baumann@rasdaman.com>.
+*/
+
+#ifndef _D_TILER_
+#define _D_TILER_
+
+#include "raslib/minterval.hh"
+#include <vector>
+#include <utility>
+//#include<pair>
+
+class Tile;
+class PersTile;
+class TransTile;
+
+typedef std::pair<r_Range,r_Range> RangePair;
+typedef std::pair<const r_Range,const r_Range> ConstRangePair;
+
+class r_Tiler
+	{
+	public:
+		r_Tiler(std::vector<r_Minterval>& sourceDomains, const std::vector<r_Minterval>& targetDomains);
+			/*
+			sourceDomains will be splitted.
+			targetDomains will not be touched.
+			*/
+		
+		void split();
+			/*
+			will split the source domains.
+			*/
+
+		void removeCoveredDomains();
+			/*
+			removes those splited domains which are covered by target domains.
+			*/
+
+		void removeDoubleDomains();
+			/*
+			removes those splited domains which are covered by other splited domains.
+			*/
+
+		void mergeDomains();
+			/*
+			tries to merge splited domains into larger domains.
+			*/
+
+		std::vector<r_Minterval> getTiledDomains() const;
+			/*
+			returns the computed domains.  you must call split() first.
+			*/
+		
+		std::vector<Tile*> generateTiles(const std::vector<Tile*>& sourceTiles) const;
+			/*
+			uses the previously computed tiled domains to generate the output.
+			call split, removeCoveredDomains, removeDoubleDomains, mergeDomains first!
+			memory must be freed by the caller!
+			*/
+		
+	private:
+
+		std::vector<r_Minterval> splitMinterval(const r_Minterval& sourceDomain, std::vector<RangePair>& splitDimensions);
+
+		std::vector<RangePair> computeSplitDimensions(const r_Minterval& sourceDomain) const;
+
+		std::vector<r_Minterval> splitedDomains;
+
+		std::vector<r_Minterval> sourceDomains;
+
+		std::vector<r_Minterval> targetDomains;
+	};
+#endif
+