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diff --git a/src/functors/analytical/indicator/smoothIndicatorF2D.h b/src/functors/analytical/indicator/smoothIndicatorF2D.h
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+/*  This file is part of the OpenLB library
+ *
+ *  Copyright (C) 2016 Thomas Henn, Cyril Masquelier, Jan Marquardt, Mathias J. Krause
+ *  E-mail contact: info@openlb.net
+ *  The most recent release of OpenLB can be downloaded at
+ *  <http://www.openlb.net/>
+ *
+ *  This program 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 2
+ *  of the License, or (at your option) any later version.
+ *
+ *  This program 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 this program; if not, write to the Free
+ *  Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ *  Boston, MA  02110-1301, USA.
+*/
+
+#ifndef SMOOTH_INDICATOR_F_2D_H
+#define SMOOTH_INDICATOR_F_2D_H
+
+#include <vector>
+
+#include "smoothIndicatorBaseF2D.h"
+#include "io/xmlReader.h"
+
+#include "core/blockData2D.h"
+#include "core/unitConverter.h"
+#include "smoothIndicatorBaseF3D.h"
+#include "functors/analytical/indicator/indicatorBaseF2D.h"
+#include "functors/analytical/indicator/indicatorBaseF3D.h"
+
+namespace olb {
+
+/// implements a smooth particle cuboid in 2D with an _epsilon sector
+template <typename T, typename S, bool HLBM=false>
+class SmoothIndicatorCuboid2D final : public SmoothIndicatorF2D<T,S,HLBM> {
+private:
+  S _xLength;
+  S _yLength;
+public:
+  SmoothIndicatorCuboid2D(Vector<S,2> center, S xLength, S yLength, S epsilon, S theta=0, S density=0, Vector<S,2> vel = Vector<S,2> (0.,0.));
+  bool operator()(T output[],const S input[]) override;
+};
+
+/// implements a smooth circle in 2D with an _epsilon sector
+template <typename T, typename S, bool HLBM=false>
+class SmoothIndicatorCircle2D final : public SmoothIndicatorF2D<T,S,HLBM> {
+private:
+  S _radius;
+public:
+  SmoothIndicatorCircle2D(Vector<S,2> center, S radius, S epsilon, S density=0, Vector<S,2> vel = Vector<S,2> (0.,0.));
+  bool operator() (T output[], const S input[]) override;
+};
+
+/// implements a smooth triangle in 2D with an _epsilon sector
+template <typename T, typename S, bool HLBM=false>
+class SmoothIndicatorTriangle2D final : public SmoothIndicatorF2D<T,S,HLBM> {
+private:
+  /// corner points
+  Vector<S, 2> _PointA, _PointB, _PointC;
+  /// vectors connecting corner points (_ab: from a to b)
+  Vector<S, 2> _ab, _bc, _ca;
+  /// normal on _ab * _A  = _ab_d
+  S _ab_d, _bc_d, _ca_d;
+public:
+  SmoothIndicatorTriangle2D(Vector<S,2> center, S radius, S epsilon, S theta=0, S density=0, Vector<S,2> vel = Vector<S,2> (0.,0.));
+  bool operator() (T output[], const S input[]);
+};
+
+}
+
+#endif
+