0027108: GCPnt_TangentialDeflection does not respect linear deflection

[occt.git] / src / GCPnts / GCPnts_DistFunction.hxx

diff --git a/src/GCPnts/GCPnts_DistFunction.hxx b/src/GCPnts/GCPnts_DistFunction.hxx
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+++ b/src/GCPnts/GCPnts_DistFunction.hxx
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+// Copyright (c) 2014-2014 OPEN CASCADE SAS
+//
+// This file is part of Open CASCADE Technology software library.
+//
+// This library is free software; you can redistribute it and/or modify it under
+// the terms of the GNU Lesser General Public License version 2.1 as published
+// by the Free Software Foundation, with special exception defined in the file
+// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
+// distribution for complete text of the license and disclaimer of any warranty.
+//
+// Alternatively, this file may be used under the terms of Open CASCADE
+// commercial license or contractual agreement.
+
+#ifndef _GCPnts_DistFunction_HeaderFile
+#define _GCPnts_DistFunction_HeaderFile
+
+#include <gp_Lin.hxx>
+#include <math_Function.hxx>
+#include <math_MultipleVarFunction.hxx>
+#include <Adaptor3d_Curve.hxx>
+
+class gp_Pnt;
+
+//! Class to define function, which calculates square distance between point on curve
+//! C(u), U1 <= u <= U2 and line passing through points C(U1) and C(U2)
+//! This function is used in any minimisation algorithm to define maximal deviation between curve and line,
+//! which required one variable function without derivative (for ex. math_BrentMinimum)
+class GCPnts_DistFunction : public math_Function
+{
+public:
+  Standard_EXPORT GCPnts_DistFunction(const Adaptor3d_Curve& theCurve,
+                                      const Standard_Real U1, const Standard_Real U2);
+  //
+  Standard_EXPORT GCPnts_DistFunction(const GCPnts_DistFunction& theOther);
+
+  Standard_EXPORT virtual Standard_Boolean Value (const Standard_Real X,
+                                                        Standard_Real& F);
+private:
+  GCPnts_DistFunction & operator = (const GCPnts_DistFunction & theOther);
+
+  const Adaptor3d_Curve& myCurve;
+  gp_Lin myLin;
+  Standard_Real myU1;
+  Standard_Real myU2;
+};
+//
+//! The same as class GCPnts_DistFunction, but it can be used in minimization algorithms that
+//! requires multi variable function
+class GCPnts_DistFunctionMV : public math_MultipleVarFunction
+{
+public:
+  Standard_EXPORT GCPnts_DistFunctionMV(GCPnts_DistFunction& theCurvLinDist);
+
+  Standard_EXPORT virtual Standard_Boolean Value (const math_Vector& X,
+                                                        Standard_Real& F);
+
+  Standard_EXPORT virtual Standard_Integer NbVariables() const;
+
+private:
+  GCPnts_DistFunctionMV & operator = (const GCPnts_DistFunctionMV & theOther);
+  GCPnts_DistFunction& myMaxCurvLinDist;
+};
+
+//
+
+
+#endif // _GCPnts_DistFunction_HeaderFile