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0e14656b30
Dereferenced null pointers was eliminated for PLib, BSplCLib and BSplSLib. All affected code was changed accordingly.
224 lines
6.6 KiB
C++
224 lines
6.6 KiB
C++
// Created on: 1993-09-29
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// Created by: Bruno DUMORTIER
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// Copyright (c) 1993-1999 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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#include <BSplCLib.hxx>
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#include <GeomFill_Coons.hxx>
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#include <PLib.hxx>
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#include <TColgp_HArray2OfPnt.hxx>
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#include <TColStd_HArray2OfReal.hxx>
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//=======================================================================
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//function : GeomFill_Coons
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//purpose :
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//=======================================================================
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GeomFill_Coons::GeomFill_Coons()
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{
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}
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//=======================================================================
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//function : GeomFill_Coons
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//purpose :
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//=======================================================================
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GeomFill_Coons::GeomFill_Coons(const TColgp_Array1OfPnt& P1,
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const TColgp_Array1OfPnt& P2,
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const TColgp_Array1OfPnt& P3,
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const TColgp_Array1OfPnt& P4)
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{
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Init( P1, P2, P3, P4);
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}
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//=======================================================================
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//function : GeomFill_Coons
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//purpose :
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//=======================================================================
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GeomFill_Coons::GeomFill_Coons(const TColgp_Array1OfPnt& P1,
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const TColgp_Array1OfPnt& P2,
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const TColgp_Array1OfPnt& P3,
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const TColgp_Array1OfPnt& P4,
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const TColStd_Array1OfReal& W1,
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const TColStd_Array1OfReal& W2,
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const TColStd_Array1OfReal& W3,
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const TColStd_Array1OfReal& W4)
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{
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Init( P1, P2, P3, P4, W1, W2, W3, W4);
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}
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//=======================================================================
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//function : Init
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//purpose :
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//=======================================================================
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void GeomFill_Coons::Init(const TColgp_Array1OfPnt& P1,
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const TColgp_Array1OfPnt& P2,
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const TColgp_Array1OfPnt& P3,
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const TColgp_Array1OfPnt& P4)
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{
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Standard_DomainError_Raise_if
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( P1.Length() != P3.Length() || P2.Length() != P4.Length()," ");
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Standard_Integer NPolU = P1.Length();
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Standard_Integer NPolV = P2.Length();
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IsRational = Standard_False;
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myPoles = new TColgp_HArray2OfPnt( 1, NPolU, 1, NPolV);
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// The boundaries are not modified
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Standard_Integer i,j,k;
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for (i=1; i<=NPolU; i++) {
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myPoles->SetValue( i, 1 , P1(i));
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myPoles->SetValue( i, NPolV, P3(i));
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}
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for (i=1; i<=NPolV; i++) {
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myPoles->SetValue( 1 , i, P2(i));
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myPoles->SetValue( NPolU, i, P4(i));
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}
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// Calcul des coefficients multiplicateurs
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TColgp_Array1OfPnt Coef ( 1, 4);
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TColgp_Array1OfPnt Pole ( 1, 4);
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TColgp_Array1OfPnt CoefU( 1, NPolU);
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TColgp_Array1OfPnt CoefV( 1, NPolV);
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Coef( 4) = gp_Pnt( 2., -2., 0.);
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Coef( 3) = gp_Pnt( -3., 3., 0.);
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Coef( 2) = gp_Pnt( 0., 0., 0.);
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Coef( 1) = gp_Pnt( 1., 0., 0.);
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PLib::CoefficientsPoles(Coef, PLib::NoWeights(),
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Pole, PLib::NoWeights());
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if (NPolU > 4) {
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BSplCLib::IncreaseDegree(NPolU-1, Pole, BSplCLib::NoWeights(),
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CoefU, BSplCLib::NoWeights());
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}
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else {
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CoefU = Pole;
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}
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if (NPolV > 4) {
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BSplCLib::IncreaseDegree(NPolV-1, Pole, BSplCLib::NoWeights(),
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CoefV, BSplCLib::NoWeights());
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}
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else {
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CoefV = Pole;
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}
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TColStd_Array1OfReal FU(2,NPolU-1);
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TColStd_Array1OfReal GU(2,NPolU-1);
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TColStd_Array1OfReal FV(2,NPolV-1);
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TColStd_Array1OfReal GV(2,NPolV-1);
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Standard_Real Dummy;
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for ( i= 2; i< NPolU; i++) {
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CoefU(i).Coord(FU(i), GU(i), Dummy);
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}
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for ( i= 2; i< NPolV; i++) {
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CoefV(i).Coord(FV(i), GV(i), Dummy);
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}
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// Clacul des poles interieurs
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gp_Pnt P;
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for ( j=2; j<NPolV; j++) {
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for ( i=2; i<NPolU; i++) {
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for ( k=1; k<=3 ; k++) {
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P.SetCoord( k,
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FV(j) * (myPoles->Value(i ,1 )).Coord(k)
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+ GV(j) * (myPoles->Value(i ,NPolV)).Coord(k)
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+ FU(i) * (myPoles->Value(1 ,j )).Coord(k)
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+ GU(i) * (myPoles->Value(NPolU,j )).Coord(k)
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- FU(i) * FV(j) * (myPoles->Value(1 ,1 )).Coord(k)
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- FU(i) * GV(j) * (myPoles->Value(1 ,NPolV)).Coord(k)
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- GU(i) * FV(j) * (myPoles->Value(NPolU,1 )).Coord(k)
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- GU(i) * GV(j) * (myPoles->Value(NPolU,NPolV)).Coord(k));
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}
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myPoles->SetValue(i,j,P);
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}
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}
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}
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//=======================================================================
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//function : Init
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//purpose :
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//=======================================================================
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void GeomFill_Coons::Init(const TColgp_Array1OfPnt& P1,
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const TColgp_Array1OfPnt& P2,
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const TColgp_Array1OfPnt& P3,
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const TColgp_Array1OfPnt& P4,
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const TColStd_Array1OfReal& W1,
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const TColStd_Array1OfReal& W2,
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const TColStd_Array1OfReal& W3,
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const TColStd_Array1OfReal& W4
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)
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{
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Standard_DomainError_Raise_if
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( W1.Length() != W3.Length() || W2.Length() != W4.Length()," ");
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Standard_DomainError_Raise_if
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( W1.Length() != P1.Length() ||
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W2.Length() != P2.Length() ||
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W3.Length() != P3.Length() ||
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W4.Length() != P4.Length() , " ");
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Init(P1,P2,P3,P4);
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IsRational = Standard_True;
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Standard_Integer NPolU = W1.Length();
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Standard_Integer NPolV = W2.Length();
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//#ifdef OCCT_DEBUG
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Standard_Real NU = NPolU - 1;
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Standard_Real NV = NPolV - 1;
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//#endif
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myWeights = new TColStd_HArray2OfReal( 1, NPolU, 1, NPolV);
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// The boundaries are not modified
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Standard_Integer i,j;
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for ( i=1; i<=NPolU; i++) {
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myWeights->SetValue( i, 1 , W1(i));
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myWeights->SetValue( i, NPolV, W3(i));
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}
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Standard_Real PU,PU1,PV,PV1;
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for ( j=2; j<=NPolV-1; j++) {
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PV = (j-1)/NV;
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PV1 = 1 - PV;
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myWeights->SetValue( 1 , j, W4(j));
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myWeights->SetValue( NPolU, j, W2(j));
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for ( i=2; i<=NPolU-1; i++) {
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PU = (i-1)/NU;
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PU1 = 1 - PU;
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// Standard_Real W = 0.5 * ( PV1 * W1(i) + PV * W3(i) +
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// PU * W2(j) + PU1 * W4(j) );
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Standard_Real W = PV1 * W1(i) + PV * W3(i) +
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PU * W2(j) + PU1 * W4(j) -
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( PU1 * PV1 * W1(1) +
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PU * PV1 * W2(1) +
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PU * PV * W3(NPolU) +
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PU1 * PV * W4(NPolV) );
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myWeights->SetValue(i,j,W);
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}
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}
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}
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