--- /dev/null
+// Copyright (C) 2003 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.
+//
+// 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.opencascade.org/SALOME/ or email : webmaster.salome@opencascade.org
+
+// File : SMESH_Block.hxx
+// Created : Tue Nov 30 12:42:18 2004
+// Author : Edward AGAPOV (eap)
+
+
+#ifndef SMESH_Block_HeaderFile
+#define SMESH_Block_HeaderFile
+
+#include <Geom2d_Curve.hxx>
+#include <Geom_Curve.hxx>
+#include <Geom_Surface.hxx>
+#include <TopExp.hxx>
+#include <TopTools_IndexedMapOfOrientedShape.hxx>
+#include <TopoDS_Edge.hxx>
+#include <TopoDS_Shell.hxx>
+#include <TopoDS_Vertex.hxx>
+#include <gp_Pnt.hxx>
+#include <gp_Trsf.hxx>
+#include <gp_XY.hxx>
+#include <gp_XYZ.hxx>
+#include <math_FunctionSetWithDerivatives.hxx>
+#include <math_Matrix.hxx>
+#include <math_Vector.hxx>
+
+#include <ostream>
+#include <vector>
+
+// =========================================================
+// class calculating coordinates of 3D points by normalized
+// parameters inside the block and vice versa
+// =========================================================
+
+class SMESH_Block: public math_FunctionSetWithDerivatives
+{
+ public:
+ enum TShapeID { // ids of the block sub-shapes
+ ID_NONE = 0,
+
+ ID_V000 = 1, ID_V100, ID_V010, ID_V110, ID_V001, ID_V101, ID_V011, ID_V111,
+
+ ID_Ex00, ID_Ex10, ID_Ex01, ID_Ex11,
+ ID_E0y0, ID_E1y0, ID_E0y1, ID_E1y1,
+ ID_E00z, ID_E10z, ID_E01z, ID_E11z,
+
+ ID_Fxy0, ID_Fxy1, ID_Fx0z, ID_Fx1z, ID_F0yz, ID_F1yz,
+
+ ID_Shell
+ };
+ static inline bool IsVertexID( int theShapeID )
+ { return ( theShapeID >= ID_V000 && theShapeID <= ID_V111 ); }
+
+ static inline bool IsEdgeID( int theShapeID )
+ { return ( theShapeID >= ID_Ex00 && theShapeID <= ID_E11z ); }
+
+ static inline bool IsFaceID( int theShapeID )
+ { return ( theShapeID >= ID_Fxy0 && theShapeID <= ID_F1yz ); }
+
+
+ SMESH_Block (): myNbIterations(0), mySumDist(0.) {}
+
+ bool LoadBlockShapes(const TopoDS_Shell& theShell,
+ const TopoDS_Vertex& theVertex000,
+ const TopoDS_Vertex& theVertex001,
+// TopTools_IndexedMapOfShape& theShapeIDMap
+ TopTools_IndexedMapOfOrientedShape& theShapeIDMap );
+ // add sub-shapes of theBlock to theShapeIDMap so that they get
+ // IDs acoording to enum TShapeID
+
+ static int GetShapeIDByParams ( const gp_XYZ& theParams );
+ // define an id of the block sub-shape by point parameters
+
+ bool VertexPoint( const int theVertexID, gp_XYZ& thePoint ) const {
+ if ( !IsVertexID( theVertexID )) return false;
+ thePoint = myPnt[ theVertexID - ID_V000 ]; return true;
+ }
+ // return vertex coordinates
+
+ bool EdgePoint( const int theEdgeID, const gp_XYZ& theParams, gp_XYZ& thePoint ) const {
+ if ( !IsEdgeID( theEdgeID )) return false;
+ thePoint = myEdge[ theEdgeID - ID_Ex00 ].Point( theParams ); return true;
+ }
+ // return coordinates of a point on edge
+
+ bool FacePoint( const int theFaceID, const gp_XYZ& theParams, gp_XYZ& thePoint ) const {
+ if ( !IsFaceID ( theFaceID )) return false;
+ thePoint = myFace[ theFaceID - ID_Fxy0 ].Point( theParams ); return true;
+ }
+ // return coordinates of a point on face
+
+ bool ShellPoint( const gp_XYZ& theParams, gp_XYZ& thePoint ) const;
+ // return coordinates of a point in shell
+
+ bool ComputeParameters (const gp_Pnt& thePoint,
+ gp_XYZ& theParams,
+ const int theShapeID = ID_Shell);
+ // compute point parameters in the block
+
+ static void GetFaceEdgesIDs (const int faceID, vector< int >& edgeVec );
+ // return edges IDs of a face in the order u0, u1, 0v, 1v
+
+ static int GetCoordIndOnEdge (const int theEdgeID)
+ { return (theEdgeID < ID_E0y0) ? 1 : (theEdgeID < ID_E00z) ? 2 : 3; }
+ // return an index of a coordinate which varies along the edge
+
+ static double* GetShapeCoef (const int theShapeID);
+ // for theShapeID( TShapeID ), returns 3 coefficients used
+ // to compute an addition of an on-theShape point to coordinates
+ // of an in-shell point. If an in-shell point has parameters (Px,Py,Pz),
+ // then the addition of a point P is computed as P*kx*ky*kz and ki is
+ // defined by the returned coef like this:
+ // ki = (coef[i] == 0) ? 1 : (coef[i] < 0) ? 1 - Pi : Pi
+
+ static bool IsForwardEdge (const TopoDS_Edge & theEdge,
+ //TopTools_IndexedMapOfShape& theShapeIDMap
+ TopTools_IndexedMapOfOrientedShape& theShapeIDMap) {
+ int v1ID = theShapeIDMap.FindIndex( TopExp::FirstVertex( theEdge ).Oriented( TopAbs_FORWARD ));
+ int v2ID = theShapeIDMap.FindIndex( TopExp::LastVertex( theEdge ).Oriented( TopAbs_FORWARD ));
+ return ( v1ID < v2ID );
+ }
+ // Return true if an in-block parameter increases along theEdge curve
+
+ static void Swap(double& a, double& b) { double tmp = a; a = b; b = tmp; }
+
+ // methods of math_FunctionSetWithDerivatives
+ Standard_Integer NbVariables() const;
+ Standard_Integer NbEquations() const;
+ Standard_Boolean Value(const math_Vector& X,math_Vector& F) ;
+ Standard_Boolean Derivatives(const math_Vector& X,math_Matrix& D) ;
+ Standard_Boolean Values(const math_Vector& X,math_Vector& F,math_Matrix& D) ;
+ Standard_Integer GetStateNumber ();
+
+ static ostream& DumpShapeID (const int theBlockShapeID, ostream& stream);
+ // DEBUG: dump an id of a block sub-shape
+
+ private:
+
+ struct TEdge {
+ int myCoordInd;
+ double myFirst;
+ double myLast;
+ Handle(Geom_Curve) myC3d;
+ gp_Trsf myTrsf;
+ double GetU( const gp_XYZ& theParams ) const;
+ gp_XYZ Point( const gp_XYZ& theParams ) const;
+ };
+
+ struct TFace {
+ // 4 edges in the order u0, u1, 0v, 1v
+ int myCoordInd[ 4 ];
+ double myFirst [ 4 ];
+ double myLast [ 4 ];
+ Handle(Geom2d_Curve) myC2d [ 4 ];
+ // 4 corner points in the order 00, 10, 11, 01
+ gp_XY myCorner [ 4 ];
+ // surface
+ Handle(Geom_Surface) myS;
+ gp_Trsf myTrsf;
+ gp_XY GetUV( const gp_XYZ& theParams ) const;
+ gp_XYZ Point( const gp_XYZ& theParams ) const;
+ int GetUInd() const { return myCoordInd[ 0 ]; }
+ int GetVInd() const { return myCoordInd[ 2 ]; }
+ };
+
+ TopoDS_Shell myShell;
+ // geometry:
+ // 8 vertices
+ gp_XYZ myPnt[ 8 ];
+ // 12 edges
+ TEdge myEdge[ 12 ];
+ // 6 faces
+ TFace myFace[ 6 ];
+
+ // for param computation
+
+ int myFaceIndex;
+ double myFaceParam;
+ int myNbIterations;
+ double mySumDist;
+
+ gp_XYZ myPoint; // the given point
+ gp_XYZ myParam; // the best parameters guess
+ double myValues[ 4 ]; // values computed at myParam
+
+ typedef pair<gp_XYZ,gp_XYZ> TxyzPair;
+ TxyzPair my3x3x3GridNodes[ 27 ];
+ bool myGridComputed;
+};
+
+
+#endif
