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diff --git a/src/ProjectionSphaeric.H b/src/ProjectionSphaeric.H
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+++ b/src/ProjectionSphaeric.H
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+// 
+// Copyright 2005 by Johannes Hofmann
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Library General Public
+// License as published by the Free Software Foundation; either
+// version 2 of the License, or (at your option) any later version.
+//
+// This library 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
+// Library General Public License for more details.
+//
+// You should have received a copy of the GNU Library General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+// USA.
+//
+
+#ifndef PROJECTIONSPHAERIC_H
+#define PROJECTIONSPHAERIC_H
+
+#include "Hill.H"
+#include "Projection.H"
+
+class ProjectionSphaeric : public Projection {
+ private:
+
+  double comp_scale(Hill *m1, Hill *m2, double d_m1_m2_2);
+  double comp_dir_view(Hill *m1, Hill *m2, double d_m1_2, double d_m2_2, double scale);
+  double comp_nick_view(Hill *m1, Hill *m2, double d_m1_2, double scale, double dir_view);
+  double comp_tilt_view(Hill *m, double scale, double dir_view, double nick_view);
+
+ public:
+  void set_coordinates(Hill *m, const ViewParams *parms);
+  
+  int comp_params(Hill *m1, Hill *m2, ViewParams *parms);
+};
+#endif