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diff --git a/src/ProjectionTangentialLSQ.H b/src/ProjectionTangentialLSQ.H
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+++ b/src/ProjectionTangentialLSQ.H
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+//
+// Copyright 2006 Johannes Hofmann <Johannes.Hofmann@gmx.de>
+//
+// This software may be used and distributed according to the terms
+// of the GNU General Public License, incorporated herein by reference.
+
+#ifndef PROJECTIONTANGENTIALLSQ_H
+#define PROJECTIONTANGENTIALLSQ_H
+
+#include "Hill.H"
+#include "Projection.H"
+
+class ProjectionTangentialLSQ : public Projection {
+	private:
+		double comp_center_angle(double alph_a, double alph_b, double d1, double d2);
+
+		double comp_scale(double alph_a, double alph_b, double d1, double d2);
+
+		double angle_dist(double a1, double a2);
+
+		int optimize(const Hill *m1, const Hill *m2, ViewParams *parms);
+
+	public:
+		void get_coordinates(double a_view, double a_nick, const ViewParams *parms,
+			double *x, double *y);
+
+		int comp_params(const Hill *m1, const Hill *m2, ViewParams *parms);
+};
+#endif