-// Copyright (C) 2007-2012 CEA/DEN, EDF R&D, OPEN CASCADE
+// Copyright (C) 2007-2022 CEA/DEN, EDF R&D, OPEN CASCADE
//
// Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
// CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
-// version 2.1 of the License.
+// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
//
-// SMESH SMESH : implementaion of SMESH idl descriptions
+// SMESH SMESH : implementation of SMESH idl descriptions
// File : StdMeshers_AutomaticLength.cxx
// Author : Edward AGAPOV, OCC
// Module : SMESH
*/
//=============================================================================
-StdMeshers_AutomaticLength::StdMeshers_AutomaticLength(int hypId, int studyId, SMESH_Gen * gen)
- :SMESH_Hypothesis(hypId, studyId, gen)
+StdMeshers_AutomaticLength::StdMeshers_AutomaticLength(int hypId, SMESH_Gen * gen)
+ :SMESH_Hypothesis(hypId, gen)
{
_name = "AutomaticLength";
_param_algo_dim = 1; // is used by SMESH_Regular_1D
const double theFineConst = 4.5;
void StdMeshers_AutomaticLength::SetFineness(double theFineness)
- throw(SALOME_Exception)
{
if ( theFineness < 0.0 || theFineness > 1.0 )
throw SALOME_Exception(LOCALIZED("theFineness is out of range [0.0-1.0]"));
const double a14divPI = 14. / M_PI;
+
inline double segLength(double S0, double edgeLen, double minLen )
{
// PAL10237
// S = S0 * f(L/Lmin) where f(x) = 1 + (2/Pi * 7 * atan(x/5) )
+
// =>
// S = S0 * ( 1 + 14/PI * atan( L / ( 5 * Lmin )))
return S0 * ( 1. + a14divPI * atan( edgeLen / ( 5 * minLen )));
}
+#if 0
+ //const double a14divPI = 14. / M_PI;
+ const double a2div7divPI = 2. / 7. / M_PI;
+ inline double segLength(double S0, double edgeLen, double minLen )
+ {
+ // PAL10237
+ // S = S0 * f(L/Lmin) where
+ // f(x) = 1 + (7 * 2/Pi * atan(x/5))
+ // =>
+ // S = S0 * ( 1 + 14/PI * atan( L / ( 5 * Lmin )))
+ //
+ // return S0 * ( 1. + a14divPI * atan( edgeLen / ( 5 * minLen )));
+
+ // The above formular gives too short segments when Lmax/Lmin is too high
+ // because by this formular the largest segment is only 8 times longer than the
+ // shortest one ( 2/Pi * atan(x/5) varies within [0,1] ). So a new formular is:
+ //
+ // f(x) = 1 + (x/7 * 2/Pi * atan(x/5))
+ // =>
+ // S = S0 * ( 1 + 2/7/PI * L/Lmin * atan( 5 * L/Lmin ))
+ //
+ const double Lratio = edgeLen / minLen;
+ return S0 * ( 1. + a2div7divPI * Lratio * atan( 5 * Lratio ));
+ }
+#endif
//================================================================================
/*!
* \brief Compute segment length for all edges
theTShapeToLengthMap.insert( make_pair( getTShape( edge ), L ));
}
- // Compute S0
-
- // image attached to PAL10237
-
- // NbSeg
- // ^
- // |
- // 10|\
- // | \
- // | \
- // | \
- // 5| --------
- // |
- // +------------>
- // 1 10 Lmax/Lmin
-
+ // Compute S0 - minimal segment length, is computed by the shortest EDGE
+
+ /* image attached to PAL10237
+
+ NbSeg (on the shortest EDGE)
+ ^
+ |
+ 10|\
+ | \
+ | \
+ | \
+ 5| --------
+ |
+ +------------>
+ 1 10 Lmax/Lmin
+ */
const int NbSegMin = 5, NbSegMax = 10; // on axis NbSeg
const double Lrat1 = 1., Lrat2 = 10.; // on axis Lmax/Lmin
NbSeg += ( Lrat2 - Lratio ) / ( Lrat2 - Lrat1 ) * ( NbSegMax - NbSegMin );
double S0 = Lmin / (int) NbSeg;
- MESSAGE( "S0 = " << S0 << ", Lmin = " << Lmin << ", Nbseg = " << (int) NbSeg);
+ //MESSAGE( "S0 = " << S0 << ", Lmin = " << Lmin << ", Nbseg = " << (int) NbSeg);
// Compute segments length for all edges
+
map<const TopoDS_TShape*, double>::iterator tshape_length = theTShapeToLengthMap.begin();
for ( ; tshape_length != theTShapeToLengthMap.end(); ++tshape_length )
{
double StdMeshers_AutomaticLength::GetLength(const SMESH_Mesh* theMesh,
const double theEdgeLength)
- throw(SALOME_Exception)
{
if ( !theMesh ) throw SALOME_Exception(LOCALIZED("NULL Mesh"));
double StdMeshers_AutomaticLength::GetLength(const SMESH_Mesh* theMesh,
const TopoDS_Shape& anEdge)
- throw(SALOME_Exception)
{
if ( !theMesh ) throw SALOME_Exception(LOCALIZED("NULL Mesh"));
SMESHDS_SubMesh * eSubMesh = aMeshDS->MeshElements( edge );
if ( !eSubMesh )
return false;
- int nbSeg = eSubMesh->NbElements();
+ smIdType nbSeg = eSubMesh->NbElements();
if ( nbSeg < 1 )
continue;
double segLen = L / nbSeg;