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smesh/src/StdMeshers/StdMeshers_Prism_3D.hxx
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// 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, 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
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
// See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
//
// SMESH SMESH : implementation of SMESH idl descriptions
// File : StdMeshers_Prism_3D.hxx
// Module : SMESH
//
#ifndef _SMESH_Prism_3D_HXX_
#define _SMESH_Prism_3D_HXX_
#include "SMESH_StdMeshers.hxx"
#include "SMESHDS_Mesh.hxx"
#include "SMESH_Block.hxx"
#include "SMESH_Comment.hxx"
#include "SMESH_Mesh.hxx"
#include "SMESH_MesherHelper.hxx"
#include "SMESH_TypeDefs.hxx"
#include "SMESH_subMesh.hxx"
#include "StdMeshers_ProjectionUtils.hxx"
#include <Adaptor2d_Curve2d.hxx>
#include <Adaptor3d_Curve.hxx>
#include <Adaptor3d_Surface.hxx>
#include <BRepAdaptor_Surface.hxx>
#include <TColStd_DataMapOfIntegerInteger.hxx>
#include <TopTools_IndexedMapOfOrientedShape.hxx>
#include <TopoDS_Face.hxx>
#include <gp_Trsf.hxx>
#include <gp_XYZ.hxx>
#include <vector>
namespace Prism_3D
{
struct TNode;
struct TPrismTopo;
}
class SMESHDS_SubMesh;
class TopoDS_Edge;
typedef TopTools_IndexedMapOfOrientedShape TBlockShapes;
typedef std::vector<const SMDS_MeshNode* > TNodeColumn;
typedef std::map< double, TNodeColumn > TParam2ColumnMap;
typedef std::map< double, TNodeColumn >::const_iterator TParam2ColumnIt;
// map of bottom nodes to the column of nodes above them
// (the column includes the bottom nodes)
typedef std::map< Prism_3D::TNode, TNodeColumn > TNode2ColumnMap;
namespace Prism_3D
{
// ===============================================
/*!
* \brief Structure containing node relative data
*/
struct TNode
{
const SMDS_MeshNode* myNode;
mutable gp_XYZ myParams;
gp_XYZ GetCoords() const { return gp_XYZ( myNode->X(), myNode->Y(), myNode->Z() ); }
gp_XYZ GetParams() const { return myParams; }
gp_XYZ& ChangeParams() const { return myParams; }
bool HasParams() const { return myParams.X() >= 0.0; }
SMDS_TypeOfPosition GetPositionType() const
{ return myNode ? myNode->GetPosition()->GetTypeOfPosition() : SMDS_TOP_UNSPEC; }
bool IsNeighbor( const TNode& other ) const;
TNode(const SMDS_MeshNode* node = 0): myNode(node), myParams(-1,-1,-1) {}
bool operator < (const TNode& other) const { return myNode->GetID() < other.myNode->GetID(); }
};
// ===============================================
/*!
* \brief Topological data of the prism
*/
typedef std::list< TFaceQuadStructPtr > TQuadList;
struct TPrismTopo
{
TopoDS_Shape myShape3D;
TopoDS_Face myBottom;
TopoDS_Face myTop;
std::list< TopoDS_Edge > myBottomEdges;
std::vector< TQuadList> myWallQuads; // wall sides can be vertically composite
std::vector< int > myRightQuadIndex; // index of right neighbour wall quad
std::list< int > myNbEdgesInWires;
bool myNotQuadOnTop;
mutable SMESH_subMesh* myAlgoSM; // sub-mesh with algo which computed myBottom
size_t NbWires() const { return myNbEdgesInWires.size(); }
void Clear();
void SetUpsideDown();
};
}
// ===============================================================
/*!
* \brief Tool analyzing and giving access to a prism geometry
* treating it like a block, i.e. the four side faces are
* emulated by division/uniting of missing/excess faces.
* It also manage associations between block sub-shapes and a mesh.
*/
class STDMESHERS_EXPORT StdMeshers_PrismAsBlock: public SMESH_Block
{
public:
/*!
* \brief Constructor. Initialization is needed
*/
StdMeshers_PrismAsBlock();
~StdMeshers_PrismAsBlock();
/*!
* \brief Initialization.
* \param helper - helper loaded with mesh and 3D shape
* \param prism - prism topology
* \retval bool - false if a mesh or a shape are KO
*/
bool Init(SMESH_MesherHelper* helper, const Prism_3D::TPrismTopo& prism);
/*!
* \brief Return problem description
*/
SMESH_ComputeErrorPtr GetError() const { return myError; }
/*!
* \brief Free allocated memory
*/
void Clear();
/*!
* \brief Return number of nodes on every vertical edge
* \retval int - number of nodes including end nodes
*/
size_t VerticalSize() const { return myParam2ColumnMaps[0].begin()->second.size(); }
bool HasNotQuadElemOnTop() const { return myNotQuadOnTop; }
/*!
* \brief Return pointer to column of nodes
* \param node - bottom node from which the returned column goes up
* \retval const TNodeColumn* - the found column
*/
const TNodeColumn* GetNodeColumn(const SMDS_MeshNode* node) const;
/*!
* \brief Return TParam2ColumnMap for a base edge
* \param baseEdgeID - base edge SMESHDS Index
* \param isReverse - columns in-block orientation
* \retval const TParam2ColumnMap* - map
*/
const TParam2ColumnMap* GetParam2ColumnMap(const int baseEdgeID,
bool & isReverse) const
{
std::map< int, std::pair< TParam2ColumnMap*, bool > >::const_iterator i_mo =
myShapeIndex2ColumnMap.find( baseEdgeID );
if ( i_mo == myShapeIndex2ColumnMap.end() ) return 0;
const std::pair< TParam2ColumnMap*, bool >& col_frw = i_mo->second;
isReverse = !col_frw.second;
return col_frw.first;
}
/*!
* \brief Return pointer to column of nodes
* \param node - bottom node from which the returned column goes up
* \retval const TNodeColumn* - the found column
*/
bool HasNodeColumn(const SMDS_MeshNode* node) const
{
return myShapeIndex2ColumnMap.count( node->getshapeId() );
}
/*!
* \brief Return transformations to get coordinates of nodes of each internal layer
* by nodes of the bottom. Layer is a set of nodes at a certain step
* from bottom to top.
*/
bool GetLayersTransformation(std::vector<gp_Trsf> & trsf,
const Prism_3D::TPrismTopo& prism) const;
/*!
* \brief Return pointer to mesh
* \retval SMESH_Mesh - mesh
*/
SMESH_Mesh* Mesh() const { return myHelper->GetMesh(); }
/*!
* \brief Return pointer to mesh DS
* \retval SMESHDS_Mesh - mesh DS
*/
SMESHDS_Mesh* MeshDS() const { return Mesh()->GetMeshDS(); }
/*!
* \brief Return submesh of a shape
* \param shapeID - shape given by in-block index
* \retval SMESH_subMesh* - found submesh
*/
SMESH_subMesh* SubMesh(const int shapeID) const
{ return Mesh()->GetSubMesh( Shape( shapeID )); }
/*!
* \brief Return submesh DS of a shape
* \param shapeID - shape given by in-block index
* \retval SMESHDS_SubMesh* - found submesh DS
*/
SMESHDS_SubMesh* SubMeshDS(const int shapeID) const
{ return SubMesh(shapeID)->GetSubMeshDS(); }
/*!
* \brief Return a in-block shape
* \param shapeID - shape given by in-block index
* \retval SMESHDS_SubMesh* - found submesh
*/
const TopoDS_Shape& Shape(const int shapeID) const
{ return myShapeIDMap( shapeID ); }
/*!
* \brief Return in-block ID of a shape
* \param shape - block sub-shape
* \retval int - ID or zero if the shape has no ID
*/
int ShapeID(const TopoDS_Shape& shape) const
{ return myShapeIDMap.FindIndex( shape ); }
/*!
* \brief Check curve orientation of a bottom edge
* \param meshDS - mesh DS
* \param columnsMap - node columns map of side face
* \param bottomEdge - the bottom edge
* \param sideFaceID - side face in-block ID
* \retval bool - true if orientation coincide with in-block forward orientation
*/
static bool IsForwardEdge(SMESHDS_Mesh* meshDS,
const TParam2ColumnMap& columnsMap,
const TopoDS_Edge & bottomEdge,
const int sideFaceID);
private:
// --------------------------------------------------------------------
/*!
* \brief Class representing a part of a geom face or
* a union of seleral faces. Or just an ordinary geom face
*
* It's parametrization is within [0,1] range.
* It redefines Adaptor3d_Surface::Value(U,V) where U and V are within [0,1]
*/
// --------------------------------------------------------------------
class TSideFace: public Adaptor3d_Surface
{
typedef boost::shared_ptr<BRepAdaptor_Surface> PSurface;
int myID; //!< in-block ID
// map used to find out real UV by it's normalized UV
TParam2ColumnMap* myParamToColumnMap;
PSurface mySurface;
TopoDS_Edge myBaseEdge;
std::map< int, PSurface > myShapeID2Surf;
// first and last normalized params and orientation for each component or it-self
std::vector< std::pair< double, double> > myParams; // select my columns in myParamToColumnMap
bool myIsForward;
std::vector< TSideFace* > myComponents;
SMESH_MesherHelper myHelper;
public:
TSideFace( SMESH_Mesh& mesh,
const int faceID,
const Prism_3D::TQuadList& quadList,
const TopoDS_Edge& baseEdge,
TParam2ColumnMap* columnsMap,
const double first = 0.0,
const double last = 1.0);
TSideFace( SMESH_Mesh& mesh,
const std::vector< TSideFace* >& components,
const std::vector< std::pair< double, double> > & params);
TSideFace( const TSideFace& other );
~TSideFace();
bool IsComplex() const
{ return ( NbComponents() > 0 || myParams[0].first != 0. || myParams[0].second != 1. ); }
int FaceID() const { return myID; }
SMESH_Mesh* GetMesh() const { return myHelper.GetMesh(); }
TParam2ColumnMap* GetColumns() const { return myParamToColumnMap; }
gp_XY GetNodeUV(const TopoDS_Face& F, const SMDS_MeshNode* n, const SMDS_MeshNode* n2=0) const
{ return ((SMESH_MesherHelper&) myHelper).SetSubShape(F), myHelper.GetNodeUV( F, n, n2 ); }
const TopoDS_Edge & BaseEdge() const { return myBaseEdge; }
int ColumnHeight() const {
if ( NbComponents() ) return GetComponent(0)->GetColumns()->begin()->second.size();
else return GetColumns()->begin()->second.size(); }
double GetColumns(const double U, TParam2ColumnIt & col1, TParam2ColumnIt& col2 ) const;
void GetNodesAtZ(const int Z, std::map<double, const SMDS_MeshNode* >& nodes ) const;
int NbComponents() const { return myComponents.size(); }
TSideFace* GetComponent(const int i) const { return myComponents.at( i ); }
void SetComponent(const int i, TSideFace* c)
{ if ( myComponents[i] ) delete myComponents[i]; myComponents[i]=c; }
TSideFace* GetComponent(const double U, double& localU) const;
bool IsForward() const { return myIsForward; }
// boundary geometry for a face
Adaptor3d_Surface* Surface() const { return new TSideFace( *this ); }
bool GetPCurves(Adaptor2d_Curve2d* pcurv[4]) const;
Adaptor2d_Curve2d* HorizPCurve(const bool isTop, const TopoDS_Face& horFace) const;
Adaptor3d_Curve* HorizCurve(const bool isTop) const;
Adaptor3d_Curve* VertiCurve(const bool isMax) const;
TopoDS_Edge GetEdge( const int edge ) const;
int InsertSubShapes( TBlockShapes& shapeMap ) const;
// redefine Adaptor methods
gp_Pnt Value(const Standard_Real U,const Standard_Real V) const;
// debug
void dumpNodes(int nbNodes) const;
};
// --------------------------------------------------------------------
/*!
* \brief Class emulating geometry of a vertical edge
*/
// --------------------------------------------------------------------
class STDMESHERS_EXPORT TVerticalEdgeAdaptor: public Adaptor3d_Curve
{
const TNodeColumn* myNodeColumn;
public:
TVerticalEdgeAdaptor( const TParam2ColumnMap* columnsMap, const double parameter );
gp_Pnt Value(const Standard_Real U) const;
Standard_Real FirstParameter() const { return 0; }
Standard_Real LastParameter() const { return 1; }
// debug
void dumpNodes(int nbNodes) const;
};
// --------------------------------------------------------------------
/*!
* \brief Class emulating geometry of a hirizontal edge
*/
// --------------------------------------------------------------------
class STDMESHERS_EXPORT THorizontalEdgeAdaptor: public Adaptor3d_Curve
{
const TSideFace* mySide;
double myV;
public:
THorizontalEdgeAdaptor( const TSideFace* sideFace, const bool isTop)
:mySide(sideFace), myV( isTop ? 1.0 : 0.0 ) {}
gp_Pnt Value(const Standard_Real U) const;
Standard_Real FirstParameter() const { return 0; }
Standard_Real LastParameter() const { return 1; }
// debug
void dumpNodes(int nbNodes) const;
};
// --------------------------------------------------------------------
/*!
* \brief Class emulating pcurve on a hirizontal face
*/
// --------------------------------------------------------------------
class STDMESHERS_EXPORT TPCurveOnHorFaceAdaptor: public Adaptor2d_Curve2d
{
std::map< double, gp_XY > myUVmap; // normalized parameter to UV on a horizontal face
public:
TPCurveOnHorFaceAdaptor( const TSideFace* sideFace,
const bool isTop,
const TopoDS_Face& horFace);
gp_Pnt2d Value(const Standard_Real U) const;
Standard_Real FirstParameter() const { return 0; }
Standard_Real LastParameter() const { return 1; }
};
bool myNotQuadOnTop;
SMESH_MesherHelper* myHelper;
TBlockShapes myShapeIDMap;
SMESH_ComputeErrorPtr myError;
// container of 4 side faces
TSideFace* mySide;
// node columns for each base edge
std::vector< TParam2ColumnMap > myParam2ColumnMaps;
// to find a column for a node by edge SMESHDS Index
std::map< int, std::pair< TParam2ColumnMap*, bool > > myShapeIndex2ColumnMap;
/*!
* \brief store error and comment and then return ( error == COMPERR_OK )
*/
bool error(int error, const SMESH_Comment& comment = "") {
myError = SMESH_ComputeError::New(error,comment);
return myError->IsOK();
}
/*!
* \brief Prints a script creating a normal grid on the prism side
*/
void faceGridToPythonDump(const SMESH_Block::TShapeID face,
const int nb=10);
}; // class StdMeshers_PrismAsBlock
// ===============================================
/*!
* \brief Tool building internal nodes in a prism
*/
struct StdMeshers_Sweeper
{
// input data
SMESH_MesherHelper* myHelper;
TopoDS_Face myBotFace;
TopoDS_Face myTopFace;
std::vector< TNodeColumn* > myBndColumns; // boundary nodes
// output data
std::vector< TNodeColumn* > myIntColumns; // internal nodes
bool ComputeNodesByTrsf( const double tol,
const bool allowHighBndError );
bool CheckSameZ();
bool ComputeNodesOnStraightSameZ();
bool ComputeNodesOnStraight();
private:
gp_XYZ bndPoint( int iP, int z ) const
{ return SMESH_TNodeXYZ( (*myBndColumns[ iP ])[ z ]); }
gp_XYZ intPoint( int iP, int z ) const
{ return SMESH_TNodeXYZ( (*myIntColumns[ iP ])[ z ]); }
bool projectIntPoints(const std::vector< gp_XYZ >& fromBndPoints,
const std::vector< gp_XYZ >& toBndPoints,
const std::vector< gp_XYZ >& fromIntPoints,
std::vector< gp_XYZ >& toIntPoints,
const double r,
StdMeshers_ProjectionUtils::TrsfFinder3D& trsf,
std::vector< gp_XYZ > * bndError);
typedef std::vector< double > TZColumn;
static void fillZColumn( TZColumn& zColumn,
TNodeColumn& nodes );
void prepareTopBotDelaunay();
bool findDelaunayTriangles();
std::vector< TZColumn > myZColumns; // Z distribution of boundary nodes
StdMeshers_ProjectionUtils::DelaunayPtr myTopDelaunay;
StdMeshers_ProjectionUtils::DelaunayPtr myBotDelaunay;
TColStd_DataMapOfIntegerInteger myNodeID2ColID;
// top and bottom Delaulay triangles including an internal column
struct TopBotTriangles
{
double myBotBC[3], myTopBC[3]; // barycentric coordinates of a node within a triangle
int myBotTriaNodes[3], myTopTriaNodes[3]; // indices of boundary columns
TopBotTriangles();
void SetTopByBottom();
};
std::vector< TopBotTriangles> myTopBotTriangles;
};
// ===============================================
/*!
* \brief Algo building prisms on a prism shape
*/
class STDMESHERS_EXPORT StdMeshers_Prism_3D: public SMESH_3D_Algo
{
public:
StdMeshers_Prism_3D(int hypId, SMESH_Gen* gen);
virtual ~StdMeshers_Prism_3D();
virtual bool CheckHypothesis(SMESH_Mesh& aMesh,
const TopoDS_Shape& aShape,
SMESH_Hypothesis::Hypothesis_Status& aStatus);
virtual bool Compute(SMESH_Mesh& aMesh, const TopoDS_Shape& aShape);
virtual bool Evaluate(SMESH_Mesh & aMesh, const TopoDS_Shape & aShape,
MapShapeNbElems& aResMap);
/*!
* \brief Enable removal of quadrangles from the bottom face and
* triangles creation there by projection from the top
* (sole face meshed with triangles is considered to be a bottom one).
* If there are two faces with triangles, triangles must
* be of the same topology, else the algo fails.
* The method must be called before Compute()
*/
void ProjectTriangles() { myProjectTriangles = true; }
/*!
* \brief Create prisms
* \param nodeColumns - columns of nodes generated from nodes of a mesh face
* \param helper - helper initialized by mesh and shape to add prisms to
*/
static bool AddPrisms( std::vector<const TNodeColumn*> & nodeColumns,
SMESH_MesherHelper* helper);
static bool IsApplicable(const TopoDS_Shape & aShape, bool toCheckAll);
virtual bool IsApplicableToShape(const TopoDS_Shape & shape, bool toCheckAll) const
{
return IsApplicable( shape, toCheckAll );
}
private:
/*!
* \brief Analyse shape geometry and mesh.
* If there are triangles on one of faces, it becomes 'bottom'
*/
bool initPrism(Prism_3D::TPrismTopo& thePrism,
const TopoDS_Shape& theSolid,
const bool selectBottom = true);
/*!
* \brief Fill thePrism.myWallQuads and thePrism.myTopEdges
*/
bool getWallFaces( Prism_3D::TPrismTopo& thePrism,
const int totalNbFaces);
/*!
* \brief Compute mesh on a SOLID
*/
bool compute(const Prism_3D::TPrismTopo& thePrism);
/*!
* \brief Compute the base face of a prism
*/
bool computeBase(const Prism_3D::TPrismTopo& thePrism);
/*!
* \brief Compute 2D mesh on walls FACEs of a prism
*/
bool computeWalls(const Prism_3D::TPrismTopo& thePrism);
/*!
* \brief Create artificial wall quads for vertical projection between the outer and inner walls
*/
void makeQuadsForOutInProjection( const Prism_3D::TPrismTopo& thePrism,
std::multimap< int, int >& wgt2quad,
std::map< int, FaceQuadStruct >& iW2oiQuads);
/*!
* \brief Returns a source EDGE of propagation to a given EDGE
*/
TopoDS_Edge findPropagationSource( const TopoDS_Edge& E );
/*!
* \brief Find correspondence between bottom and top nodes.
* If elements on the bottom and top faces are topologically different,
* and projection is possible and allowed, perform the projection
* \retval bool - is a success or not
*/
bool assocOrProjBottom2Top( const gp_Trsf & bottomToTopTrsf,
const Prism_3D::TPrismTopo& thePrism);
/*!
* \brief Remove quadrangles from the top face and
* create triangles there by projection from the bottom
* \retval bool - a success or not
*/
bool projectBottomToTop( const gp_Trsf & bottomToTopTrsf,
const Prism_3D::TPrismTopo& thePrism );
/*!
* \brief Compute tolerance to pass to StdMeshers_Sweeper
*/
double getSweepTolerance( const Prism_3D::TPrismTopo& thePrism );
/*!
* \brief Defines if it's safe to use the block approach
*/
bool isSimpleBottom( const Prism_3D::TPrismTopo& thePrism );
/*!
* \brief Defines if all "vertical" EDGEs are straight
*/
bool allVerticalEdgesStraight( const Prism_3D::TPrismTopo& thePrism );
/*!
* \brief Project mesh faces from a source FACE of one prism to
* a source FACE of another prism
* \retval bool - a success or not
*/
bool project2dMesh(const TopoDS_Face& source, const TopoDS_Face& target);
/*!
* \brief Set projection coordinates of a node to a face and it's sub-shapes
* \param faceID - the face given by in-block ID
* \param params - node normalized parameters
* \retval bool - is a success
*/
bool setFaceAndEdgesXYZ( const int faceID, const gp_XYZ& params, int z );
/*!
* \brief If (!isOK), sets the error to a sub-mesh of a current SOLID
*/
bool toSM( bool isOK );
/*!
* \brief Return index of a shape
*/
int shapeID( const TopoDS_Shape& S );
private:
bool myProjectTriangles;
bool mySetErrorToSM;
bool myUseBlock;
StdMeshers_PrismAsBlock myBlock;
SMESH_MesherHelper* myHelper;
SMESH_subMesh* myPrevBottomSM;
std::vector<gp_XYZ> myShapeXYZ; // point on each sub-shape of the block
// map of bottom nodes to the column of nodes above them
// (the column includes the bottom node)
TNode2ColumnMap myBotToColumnMap;
TopTools_IndexedMapOfShape* myPropagChains;
}; // class StdMeshers_Prism_3D
#endif
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