CrossTangentOffset.h

00001 //===========================================================================
00002 // GoTools - SINTEF Geometry Tools version 1.1
00003 //
00004 // GoTools module: CORE
00005 //
00006 // Copyright (C) 2000-2007 SINTEF ICT, Applied Mathematics, Norway.
00007 //
00008 // This program is free software; you can redistribute it and/or          
00009 // modify it under the terms of the GNU General Public License            
00010 // as published by the Free Software Foundation version 2 of the License. 
00011 //
00012 // This program is distributed in the hope that it will be useful,        
00013 // but WITHOUT ANY WARRANTY; without even the implied warranty of         
00014 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the          
00015 // GNU General Public License for more details.                           
00016 //
00017 // You should have received a copy of the GNU General Public License      
00018 // along with this program; if not, write to the Free Software            
00019 // Foundation, Inc.,                                                      
00020 // 59 Temple Place - Suite 330,                                           
00021 // Boston, MA  02111-1307, USA.                                           
00022 //
00023 // Contact information: E-mail: tor.dokken@sintef.no                      
00024 // SINTEF ICT, Department of Applied Mathematics,                         
00025 // P.O. Box 124 Blindern,                                                 
00026 // 0314 Oslo, Norway.                                                     
00027 //
00028 // Other licenses are also available for this software, notably licenses
00029 // for:
00030 // - Building commercial software.                                        
00031 // - Building software whose source code you wish to keep private.        
00032 //===========================================================================
00033 #ifndef _GOBLENDINGCURVE_
00034 #define _GOBLENDINGCURVE_
00035 
00036 #include "EvalCurve.h"
00037 #include "SplineCurve.h"
00038 #include <vector>
00039 #include <boost/smart_ptr.hpp>
00040 
00041 
00042 namespace Go
00043 {
00046 
00047 
00052 
00053 class CrossTangentOffset : public EvalCurve
00054 {
00055  public:
00056 
00070   CrossTangentOffset(boost::shared_ptr<SplineCurve>& poscurve,
00071                        boost::shared_ptr<SplineCurve>& tangcv1,
00072                        boost::shared_ptr<SplineCurve>& tangcv2,
00073                        boost::shared_ptr<SplineCurve>& blend1,
00074                        boost::shared_ptr<SplineCurve>& blend2);
00075 
00076 
00078   virtual ~CrossTangentOffset();
00079 
00080   // Inherited from EvalCurve
00081   virtual Point eval( double t) const ;
00082 
00083   // Inherited from EvalCurve
00084   virtual void eval( double t, int n, Point der[]) const ; // n = order of diff
00085 
00086   // Inherited from EvalCurve
00087   virtual double start() const ;
00088 
00089   // Inherited from EvalCurve
00090   virtual double end() const ;
00091 
00092   // Inherited from EvalCurve
00093   virtual int dim() const ;
00094 
00111   virtual bool approximationOK(double par, Point approxpos,
00112                                double tol1, double tol2) const ;
00113 
00114  private:
00115   const boost::shared_ptr<SplineCurve> poscurve_;
00116   std::vector<boost::shared_ptr<SplineCurve> > tangcurves_;  // will always have 2 elements
00117   std::vector<boost::shared_ptr<SplineCurve> > blends_; // will always have two elemnets
00118   boost::shared_ptr<SplineCurve> length_;
00119 
00120   void evalcrtan(double t, int n, Point der[]) const ;
00121   Point evalcrtan(double t) const ;
00122 };
00123 
00125 }
00126 #endif
00127 

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