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diff --git a/kpovmodeler/pmsorcontrolpoint.h b/kpovmodeler/pmsorcontrolpoint.h
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+++ b/kpovmodeler/pmsorcontrolpoint.h
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+//-*-C++-*-
+/*
+**************************************************************************
+                                 description
+                             --------------------
+    copyright            : (C) 2000-2001 by Andreas Zehender
+    email                : [email protected]
+**************************************************************************
+
+**************************************************************************
+*                                                                        *
+*  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.                                   *
+*                                                                        *
+**************************************************************************/
+
+#ifndef PMSORCONTROLPOINT_H
+#define PMSORCONTROLPOINT_H
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include "pmcontrolpoint.h"
+
+const double c_sorTolerance = 0.0001;
+
+/**
+ * Class for free moveable control points
+ */
+class PMSorControlPoint : public PMControlPoint
+{
+public:
+   /**
+    * Type enum
+    */
+   enum CPType { PM2DXY, PM2DYX, PM2DXZ, PM2DZX, PM2DYZ, PM2DZY };
+   /**
+    * Creates a PMSorControlPoint with id. Point has to be a 2D vector.
+    */
+   PMSorControlPoint( PMSorControlPoint* prev,
+                      const PMVector& point, CPType type,
+                      int id, const QString& description );
+   /**
+    * Deletes the PMSorControlPoint
+    */
+   virtual ~PMSorControlPoint( ) { };
+   
+   /** */
+   virtual PMVector position( ) const { return to3D( m_point ); }
+   /**
+    * Sets the 2d coordinates of the control point
+    */
+   void setPoint( const PMVector& newPoint ) { m_point = newPoint; }
+   /**
+    * 2d coordinates of the control point
+    */
+   PMVector point( ) const { return m_point; }
+   /**
+    * This method is used by the sor object to link
+    * the control points in the xy and xz plane. These points are
+    * synchronized if both are selected.
+    */
+   void setSorLink( PMSorControlPoint* p ) { m_pSorLink = p; }
+   /**
+    * Returns the linked control point for lathe points
+    */
+   PMSorControlPoint* sorLink( ) const { return m_pSorLink; }
+   /** */
+   virtual void snapToGrid( );
+   
+   /** */
+   virtual bool hasExtraLine( ) const;
+   /** */
+   virtual PMVector extraLineStart( ) const;
+   /** */
+   virtual PMVector extraLineEnd( ) const;
+
+protected:
+   /** */
+   virtual void graphicalChangeStarted( );
+   /** */
+   virtual void graphicalChange( const PMVector& startPoint,
+                                 const PMVector& viewNormal,
+                                 const PMVector& endPoint );
+private:
+   PMVector to2D( const PMVector& v ) const;
+   PMVector to3D( const PMVector& v ) const;
+   
+   PMVector m_point, m_originalPoint, m_original2DPoint;
+   CPType m_type;
+   PMSorControlPoint* m_pPrev;
+   PMSorControlPoint* m_pNext;
+   PMSorControlPoint* m_pSorLink;
+};
+
+#endif