1 // File: FEmTool_LinearTension.cxx
2 // Created: Fri Nov 6 10:22:02 1998
3 // Author: Igor FEOKTISTOV
4 // <ifv@paradox.nnov.matra-dtv.fr>
7 #include <FEmTool_LinearTension.ixx>
9 #include <TColStd_HArray2OfInteger.hxx>
10 #include <TColStd_HArray2OfReal.hxx>
11 #include <PLib_JacobiPolynomial.hxx>
12 #include <PLib_HermitJacobi.hxx>
13 #include <FEmTool_ElementsOfRefMatrix.hxx>
14 #include <math_IntegerVector.hxx>
15 #include <math_Vector.hxx>
16 #include <math_GaussSetIntegration.hxx>
18 #include <Standard_ConstructionError.hxx>
20 FEmTool_LinearTension::FEmTool_LinearTension(const Standard_Integer WorkDegree,
21 const GeomAbs_Shape ConstraintOrder):
22 RefMatrix(0,WorkDegree,0,WorkDegree)
25 static Standard_Integer Order = -333, WDeg = 14;
26 static math_Vector MatrixElemts(0, ((WDeg+2)*(WDeg+1))/2 -1 );
28 myOrder = PLib::NivConstr(ConstraintOrder);
30 if (myOrder != Order) {
31 //Calculating RefMatrix
32 if (WorkDegree > WDeg) Standard_ConstructionError::Raise("Degree too high");
34 Standard_Integer DerOrder = 1;
35 Handle(PLib_HermitJacobi) theBase = new PLib_HermitJacobi(WDeg, ConstraintOrder);
36 FEmTool_ElementsOfRefMatrix Elem = FEmTool_ElementsOfRefMatrix(theBase, DerOrder);
38 Standard_Integer maxDegree = WDeg+1;
39 math_IntegerVector Order(1,1,Min(4*(maxDegree/2+1),math::GaussPointsMax()));
40 math_Vector Lower(1,1,-1.), Upper(1,1,1.);
42 math_GaussSetIntegration anInt(Elem, Lower, Upper, Order);
43 MatrixElemts = anInt.Value();
46 Standard_Integer i, j, ii, jj;
47 for(ii = i = 0; i <= WorkDegree; i++) {
48 RefMatrix(i, i) = MatrixElemts(ii);
49 for(j = i+1, jj = ii+1; j <= WorkDegree; j++, jj++) {
50 RefMatrix(j, i) = RefMatrix(i, j) = MatrixElemts(jj);
56 Handle(TColStd_HArray2OfInteger) FEmTool_LinearTension::DependenceTable() const
58 if(myCoeff.IsNull()) Standard_DomainError::Raise("FEmTool_LinearTension::DependenceTable");
60 Handle(TColStd_HArray2OfInteger) DepTab =
61 new TColStd_HArray2OfInteger(myCoeff->LowerCol(), myCoeff->UpperCol(),
62 myCoeff->LowerCol(), myCoeff->UpperCol(),0);
64 for(i=1; i<=myCoeff->RowLength(); i++) DepTab->SetValue(i,i,1);
69 Standard_Real FEmTool_LinearTension::Value()
71 Standard_Integer deg = Min(myCoeff->ColLength() - 1, RefMatrix.UpperRow()),
72 i, j, j0 = myCoeff->LowerRow(), degH = Min(2*myOrder+1, deg),
73 NbDim = myCoeff->RowLength(), dim;
75 TColStd_Array2OfReal NewCoeff( 1, NbDim, 0, deg);
77 Standard_Real coeff = (myLast - myFirst)/2., cteh3 = 2./coeff,
85 for(i = 0; i <= degH; i++) {
86 k1 = (i <= myOrder)? i : i - myOrder - 1;
87 mfact = Pow(coeff,k1);
88 for(dim = 1; dim <= NbDim; dim++)
89 NewCoeff(dim, i) = myCoeff->Value(j0 + i, dim) * mfact;
92 for(i = degH + 1; i <= deg; i++) {
93 for(dim = 1; dim <= NbDim; dim++)
94 NewCoeff(dim, i) = myCoeff->Value(j0 + i, dim);
97 for(dim = 1; dim <= NbDim; dim++) {
99 for(i = 0; i <= deg; i++) {
101 Jline = 0.5 * RefMatrix(i, i) * NewCoeff(dim, i);
103 for(j = 0; j < i; j++)
104 Jline += RefMatrix(i, j) * NewCoeff(dim, j);
106 J += Jline * NewCoeff(dim, i);
117 void FEmTool_LinearTension::Hessian(const Standard_Integer Dimension1,
118 const Standard_Integer Dimension2, math_Matrix& H)
121 Handle(TColStd_HArray2OfInteger) DepTab = DependenceTable();
123 if(Dimension1 < DepTab->LowerRow() || Dimension1 > DepTab->UpperRow() ||
124 Dimension2 < DepTab->LowerCol() || Dimension2 > DepTab->UpperCol())
125 Standard_OutOfRange::Raise("FEmTool_LinearTension::Hessian");
127 if(DepTab->Value(Dimension1,Dimension2) == 0)
128 Standard_DomainError::Raise("FEmTool_LinearTension::Hessian");
130 Standard_Integer deg = Min(RefMatrix.UpperRow(), H.RowNumber() - 1), degH = Min(2*myOrder+1, deg);
132 Standard_Real coeff = (myLast - myFirst)/2., cteh3 = 2./coeff, mfact;
133 Standard_Integer k1, k2, i, j, i0 = H.LowerRow(), j0 = H.LowerCol(), i1, j1;
138 for(i = 0; i <= degH; i++) {
139 k1 = (i <= myOrder)? i : i - myOrder - 1;
140 mfact = Pow(coeff,k1)*cteh3;
141 // Hermite*Hermite part of matrix
143 for(j = i; j <= degH; j++) {
144 k2 = (j <= myOrder)? j : j - myOrder - 1;
145 H(i1, j1) = mfact*Pow(coeff, k2)*RefMatrix(i, j);
146 if (i != j) H(j1, i1) = H(i1, j1);
149 // Hermite*Jacobi part of matrix
151 for(j = degH + 1; j <= deg; j++) {
152 H(i1, j1) = mfact*RefMatrix(i, j);
153 H(j1, i1) = H(i1, j1);
160 // Jacoby*Jacobi part of matrix
162 for(i = degH+1; i <= deg; i++) {
164 for(j = i; j <= deg; j++) {
165 H(i1, j1) = cteh3*RefMatrix(i, j);
166 if (i != j) H(j1, i1) = H(i1, j1);
174 void FEmTool_LinearTension::Gradient(const Standard_Integer Dimension, math_Vector& G)
176 if(Dimension < myCoeff->LowerCol() || Dimension > myCoeff->UpperCol())
177 Standard_OutOfRange::Raise("FEmTool_LinearTension::Gradient");
179 Standard_Integer deg = Min(G.Length() - 1, myCoeff->ColLength() - 1);
181 math_Vector X(0,deg);
182 Standard_Integer i, i1 = myCoeff->LowerRow();
183 for(i = 0; i <= deg; i++) X(i) = myCoeff->Value(i1+i, Dimension);
185 math_Matrix H(0,deg,0,deg);
186 Hessian(Dimension, Dimension, H);