// Created on: 2022-08-08 // Created by: Kseniya NOSULKO // Copyright (c) 2022 OPEN CASCADE SAS // // This file is part of Open CASCADE Technology software library. // // This library is free software; you can redistribute it and/or modify it under // the terms of the GNU Lesser General Public License version 2.1 as published // by the Free Software Foundation, with special exception defined in the file // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT // distribution for complete text of the license and disclaimer of any warranty. // // Alternatively, this file may be used under the terms of Open CASCADE // commercial license or contractual agreement. #ifndef _BRepExtrema_ProximityValueTool_HeaderFile #define _BRepExtrema_ProximityValueTool_HeaderFile #include #include #include #include typedef NCollection_Vector VectorOfPoint; //! Class BRepExtrema_VertexInspector //! derived from NCollection_CellFilter_InspectorXYZ //! This class define the Inspector interface for CellFilter algorithm, //! working with gp_XYZ points in 3d space. //! Used in search of coincidence points with a certain tolerance. class BRepExtrema_VertexInspector : public NCollection_CellFilter_InspectorXYZ { public: typedef Standard_Integer Target; //! Constructor; remembers the tolerance BRepExtrema_VertexInspector() : myTol (Precision::SquareConfusion()), myIsNeedAdd (Standard_True) {} //! Keep the points used for comparison void Add (const gp_XYZ& thePnt) { myPoints.Append (thePnt); } //! Set tolerance for comparison of point coordinates void SetTol (const Standard_Real theTol) { myTol = theTol; } //! Set current point to search for coincidence void SetCurrent (const gp_XYZ& theCurPnt) { myCurrent = theCurPnt; myIsNeedAdd = Standard_True; } Standard_Boolean IsNeedAdd() { return myIsNeedAdd; } //! Implementation of inspection method Standard_EXPORT NCollection_CellFilter_Action Inspect (const Standard_Integer theTarget); private: Standard_Real myTol; Standard_Boolean myIsNeedAdd; VectorOfPoint myPoints; gp_XYZ myCurrent; }; typedef NCollection_CellFilter BRepExtrema_CellFilter; typedef typename BRepExtrema_ProximityDistTool::ProxPnt_Status ProxPnt_Status; //! Tool class for computation of the proximity value from one BVH //! primitive set to another, solving max(min) problem. //! Handles only edge/edge or face/face cases. //! This tool is not intended to be used independently, and is integrated //! in other classes, implementing algorithms based on shape tessellation //! (BRepExtrema_ShapeProximity and BRepExtrema_SelfIntersection). //! //! Please note that algorithm results are approximate and depend greatly //! on the quality of input tessellation(s). class BRepExtrema_ProximityValueTool { public: //! Creates new unitialized proximity tool. Standard_EXPORT BRepExtrema_ProximityValueTool(); //! Creates new proximity tool for the given element sets. Standard_EXPORT BRepExtrema_ProximityValueTool (const Handle(BRepExtrema_TriangleSet)& theSet1, const Handle(BRepExtrema_TriangleSet)& theSet2, const BRepExtrema_ShapeList& theShapeList1, const BRepExtrema_ShapeList& theShapeList2); public: //! Loads the given element sets into the proximity tool. Standard_EXPORT void LoadTriangleSets (const Handle (BRepExtrema_TriangleSet)& theSet1, const Handle (BRepExtrema_TriangleSet)& theSet2); //! Loads the given list of subshapes into the proximity tool. Standard_EXPORT void LoadShapeLists (const BRepExtrema_ShapeList& theShapeList1, const BRepExtrema_ShapeList& theShapeList2); //! Sets number of sample points used for proximity calculation for each shape. //! If number is less or equal zero, all triangulation nodes are used. Standard_EXPORT void SetNbSamplePoints (const Standard_Integer theSamples1 = 0, const Standard_Integer theSamples2 = 0); //! Performs the computation of the proximity value. Standard_EXPORT void Perform (Standard_Real& theTolerance); //! Is proximity test completed? Standard_Boolean IsDone() const { return myIsDone; } //! Marks test results as outdated. void MarkDirty() { myIsDone = Standard_False; } //! Returns the computed distance. Standard_Real Distance() const { return myDistance; } //! Returns points on triangles sets, which provide the proximity distance. void ProximityPoints(gp_Pnt& thePoint1, gp_Pnt& thePoint2) const { thePoint1 = myPnt1; thePoint2 = myPnt2; } //! Returns status of points on triangles sets, which provide the proximity distance. void ProximityPointsStatus (ProxPnt_Status& thePointStatus1, ProxPnt_Status& thePointStatus2) const { thePointStatus1 = myPntStatus1; thePointStatus2 = myPntStatus2; } private: //! Gets shape data for further refinement. Standard_Boolean getInfoForRefinement (const TopoDS_Shape& theShapes, TopAbs_ShapeEnum& theShapeType, Standard_Integer& theNbNodes, Standard_Real& theStep); //! Returns the computed proximity value from first BVH to another one. Standard_Real computeProximityDist (const Handle(BRepExtrema_TriangleSet)& theSet1, const Standard_Integer theNbSamples1, const BVH_Array3d& theAddVertices1, const NCollection_Vector& theAddStatus1, const Handle(BRepExtrema_TriangleSet)& theSet2, const BRepExtrema_ShapeList& theShapeList1, const BRepExtrema_ShapeList& theShapeList2, BVH_Vec3d& thePoint1, BVH_Vec3d& thePoint2, ProxPnt_Status& thePointStatus1, ProxPnt_Status& thePointStatus2) const; //! Gets additional vertices on shapes with refining a coarser one if it's needed. Standard_Boolean getShapesAdditionalVertices(); //! Gets additional vertices and their statuses on the edge with the input step. Standard_Boolean getEdgeAdditionalVertices (const TopoDS_Edge& theEdge, const Standard_Real theStep, BVH_Array3d& theAddVertices, NCollection_Vector& theAddStatuses); //! Gets additional vertices and their statuses on the face with the input step (triangle square). Standard_Boolean getFaceAdditionalVertices (const TopoDS_Face& theFace, const Standard_Real theStep, BVH_Array3d& theAddVertices, NCollection_Vector& theAddStatuses); //! Splits the triangle recursively, halving the longest side //! to the area of ​​the current triangle > input step void doRecurTrgSplit (const gp_Pnt (&theTrg)[3], const ProxPnt_Status (&theEdgesStatus)[3], const Standard_Real theTol, const Standard_Real theStep, BVH_Array3d& theAddVertices, NCollection_Vector& theAddStatuses); private: //! Set of all mesh primitives of the 1st shape. Handle(BRepExtrema_TriangleSet) mySet1; //! Set of all mesh primitives of the 2nd shape. Handle(BRepExtrema_TriangleSet) mySet2; //! List of subshapes of the 1st shape. BRepExtrema_ShapeList myShapeList1; //! List of subshapes of the 2nd shape. BRepExtrema_ShapeList myShapeList2; //! The 1st shape. TopoDS_Shape myShape1; //! The 2nd shape. TopoDS_Shape myShape2; BVH_Array3d myAddVertices1; //!< Additional vertices on the 1st shape if its mesh is coarser. BVH_Array3d myAddVertices2; //!< Additional vertices on the 2nd shape if its mesh is coarser. NCollection_Vector myAddStatus1; //!< Status of additional vertices on the 1st shape. NCollection_Vector myAddStatus2; //!< Status of additional vertices on the 2nd shape. Standard_Boolean myIsInitS1; //!< Is the 1st shape initialized? Standard_Boolean myIsInitS2; //!< Is the 2nd shape initialized? Standard_Boolean myIsRefinementRequired1; //!< Flag about the need to refine the 1st shape. Standard_Boolean myIsRefinementRequired2; //!< Flag about the need to refine the 2nd shape. Standard_Integer myNbNodes1; //!< Number of nodes in triangulation of the 1st shape. Standard_Integer myNbNodes2; //!< Number of nodes in triangulation of the 2nd shape. Standard_Real myStep1; //!< Step for getting vertices on the 1st shape. Standard_Real myStep2; //!< Step for getting vertices on the 2nd shape. BRepExtrema_CellFilter myCells; BRepExtrema_VertexInspector myInspector; TopAbs_ShapeEnum myShapeType1; //!< 1st shape type. TopAbs_ShapeEnum myShapeType2; //!< 2nd shape type. Standard_Real myDistance; //!< Distance Standard_Boolean myIsDone; //!< State of the algorithm Standard_Integer myNbSamples1; //!< Number of samples points on the first shape Standard_Integer myNbSamples2; //!< Number of samples points on the second shape //! Proximity points gp_Pnt myPnt1, myPnt2; //! Proximity points' status ProxPnt_Status myPntStatus1, myPntStatus2; }; #endif // _BRepExtrema_ProximityValueTool_HeaderFile