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105 lines
3.2 KiB
C++
105 lines
3.2 KiB
C++
// Created on: 1995-12-04
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// Created by: Laurent BOURESCHE
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// Copyright (c) 1995-1999 Matra Datavision
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// Copyright (c) 1999-2014 OPEN CASCADE SAS
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//
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// This file is part of Open CASCADE Technology software library.
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//
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// This library is free software; you can redistribute it and/or modify it under
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// the terms of the GNU Lesser General Public License version 2.1 as published
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// by the Free Software Foundation, with special exception defined in the file
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// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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// distribution for complete text of the license and disclaimer of any warranty.
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//
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// Alternatively, this file may be used under the terms of Open CASCADE
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// commercial license or contractual agreement.
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#ifndef _GeomFill_CoonsAlgPatch_HeaderFile
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#define _GeomFill_CoonsAlgPatch_HeaderFile
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#include <Standard.hxx>
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#include <Standard_Type.hxx>
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#include <gp_Pnt.hxx>
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#include <Standard_Transient.hxx>
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#include <Standard_Integer.hxx>
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class GeomFill_Boundary;
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class Law_Function;
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class gp_Vec;
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class GeomFill_CoonsAlgPatch;
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DEFINE_STANDARD_HANDLE(GeomFill_CoonsAlgPatch, Standard_Transient)
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//! Provides evaluation methods on an algorithmic
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//! patch (based on 4 Curves) defined by its boundaries and blending
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//! functions.
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class GeomFill_CoonsAlgPatch : public Standard_Transient
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{
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public:
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//! Constructs the algorithmic patch. By Default the
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//! constructed blending functions are linear.
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//! Warning: No control is done on the bounds.
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//! B1/B3 and B2/B4 must be same range and well oriented.
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Standard_EXPORT GeomFill_CoonsAlgPatch(const Handle(GeomFill_Boundary)& B1, const Handle(GeomFill_Boundary)& B2, const Handle(GeomFill_Boundary)& B3, const Handle(GeomFill_Boundary)& B4);
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//! Give the blending functions.
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Standard_EXPORT void Func (Handle(Law_Function)& f1, Handle(Law_Function)& f2) const;
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//! Set the blending functions.
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Standard_EXPORT void SetFunc (const Handle(Law_Function)& f1, const Handle(Law_Function)& f2);
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//! Computes the value on the algorithmic patch at
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//! parameters U and V.
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Standard_EXPORT gp_Pnt Value (const Standard_Real U, const Standard_Real V) const;
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//! Computes the d/dU partial derivative on the
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//! algorithmic patch at parameters U and V.
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Standard_EXPORT gp_Vec D1U (const Standard_Real U, const Standard_Real V) const;
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//! Computes the d/dV partial derivative on the
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//! algorithmic patch at parameters U and V.
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Standard_EXPORT gp_Vec D1V (const Standard_Real U, const Standard_Real V) const;
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//! Computes the d2/dUdV partial derivative on the
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//! algorithmic patch made with linear blending functions
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//! at parameter U and V.
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Standard_EXPORT gp_Vec DUV (const Standard_Real U, const Standard_Real V) const;
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Standard_EXPORT const gp_Pnt& Corner (const Standard_Integer I) const;
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Standard_EXPORT const Handle(GeomFill_Boundary)& Bound (const Standard_Integer I) const;
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Standard_EXPORT const Handle(Law_Function)& Func (const Standard_Integer I) const;
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DEFINE_STANDARD_RTTIEXT(GeomFill_CoonsAlgPatch,Standard_Transient)
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protected:
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private:
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Handle(GeomFill_Boundary) bound[4];
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gp_Pnt c[4];
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Handle(Law_Function) a[2];
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};
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#endif // _GeomFill_CoonsAlgPatch_HeaderFile
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