1 // Created by: Peter KURNEV
2 // Copyright (c) 2010-2014 OPEN CASCADE SAS
3 // Copyright (c) 2007-2010 CEA/DEN, EDF R&D, OPEN CASCADE
4 // Copyright (c) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN, CEDRAT,
5 // EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
7 // This file is part of Open CASCADE Technology software library.
9 // This library is free software; you can redistribute it and/or modify it under
10 // the terms of the GNU Lesser General Public License version 2.1 as published
11 // by the Free Software Foundation, with special exception defined in the file
12 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
13 // distribution for complete text of the license and disclaimer of any warranty.
15 // Alternatively, this file may be used under the terms of Open CASCADE
16 // commercial license or contractual agreement.
18 #ifndef _BOPAlgo_BuilderSolid_HeaderFile
19 #define _BOPAlgo_BuilderSolid_HeaderFile
21 #include <Standard.hxx>
22 #include <Standard_DefineAlloc.hxx>
23 #include <Standard_Handle.hxx>
25 #include <BOPAlgo_BuilderArea.hxx>
26 #include <NCollection_BaseAllocator.hxx>
27 #include <TopTools_DataMapOfShapeBox.hxx>
30 //! Solid Builder is the algorithm for building solids from set of faces.
31 //! The given faces should be non-intersecting, i.e. all coinciding parts
32 //! of the faces should be shared among them.
34 //! The algorithm performs the following steps to build the solids:
36 //! - faces orientated INTERNAL;
37 //! - alone faces given twice with different orientation;
38 //! 2. Build all possible closed shells from the rest of the faces
39 //! (*BOPAlgo_ShellSplitter* is used for that);
40 //! 3. Classify the obtained shells on the Holes and Growths;
41 //! 4. Build solids from the Growth shells, put Hole shells into closest Growth solids;
42 //! 5. Classify all unused faces relatively created solids and put them as internal
43 //! shells into the closest solids;
44 //! 6. Find all unclassified faces, i.e. faces outside of all created solids,
45 //! make internal shells from them and put these shells into a warning.
47 //! It is possible to avoid all internal shells in the resulting solids.
48 //! For that it is necessary to use the method SetAvoidInternalShapes(true)
49 //! of the base class. In this case the steps 5 and 6 will not be performed at all.
51 //! The algorithm may return the following warnings:
52 //! - *BOPAlgo_AlertShellSplitterFailed* in case the ShellSplitter algorithm has failed;
53 //! - *BOPAlgo_AlertSolidBuilderUnusedFaces* in case there are some faces outside of
54 //! created solids left.
56 //! Example of usage of the algorithm:
58 //! const TopTools_ListOfShape& aFaces = ...; // Faces to build the solids
59 //! Standard_Boolean isAvoidInternals = ...; // Flag which defines whether to create the internal shells or not
60 //! BOPAlgo_BuilderSolid aBS; // Solid Builder tool
61 //! aBS.SetShapes(aFaces); // Set the faces
62 //! aBS.SetAvoidInternalShapes(isAvoidInternals); // Set the AvoidInternalShapesFlag
63 //! aBS.Perform(); // Perform the operation
64 //! if (!aBS.IsDone()) // Check for the errors
66 //! // error treatment
67 //! Standard_SStream aSStream;
68 //! aBS.DumpErrors(aSStream);
71 //! if (aBS.HasWarnings()) // Check for the warnings
73 //! // warnings treatment
74 //! Standard_SStream aSStream;
75 //! aBS.DumpWarnings(aSStream);
78 //! const TopTools_ListOfShape& aSolids = aBS.Areas(); // Obtaining the result solids
81 class BOPAlgo_BuilderSolid : public BOPAlgo_BuilderArea
87 public: //! @name Constructors
90 Standard_EXPORT BOPAlgo_BuilderSolid();
91 Standard_EXPORT virtual ~BOPAlgo_BuilderSolid();
93 //! Constructor with allocator
94 Standard_EXPORT BOPAlgo_BuilderSolid(const Handle(NCollection_BaseAllocator)& theAllocator);
96 public: //! @name Performing the operation
98 //! Performs the construction of the solids from the given faces
99 Standard_EXPORT virtual void Perform() Standard_OVERRIDE;
101 public: //! @name Getting the bounding boxes of the created solids
103 //! For classification purposes the algorithm builds the bounding boxes
104 //! for all created solids. This method returns the data map of solid - box pairs.
105 const TopTools_DataMapOfShapeBox& GetBoxesMap() const
110 protected: //! @name Protected methods performing the operation
112 //! Collect the faces:
113 //! - with INTERNAL orientation;
114 //! - that are alone but given twice with different orientation.
115 //! These faces will be put into the map *myShapesToAvoid* and will be
116 //! avoided in shells construction, but will be classified later on.
117 Standard_EXPORT virtual void PerformShapesToAvoid() Standard_OVERRIDE;
119 //! Build all possible closed shells from the given faces.
120 //! The method fills the following maps:
121 //! - myLoops - Created closed shells;
122 //! - myLoopsInternal - The shells created from unused faces.
123 Standard_EXPORT virtual void PerformLoops() Standard_OVERRIDE;
125 //! Classifies the created shells on the Holes and Growths.
126 //! Creates the solids from the Growths shells.
127 //! Puts the Hole shells into the closest Growths solids.
128 Standard_EXPORT virtual void PerformAreas() Standard_OVERRIDE;
130 //! Classifies the unused faces relatively the created solids.
131 //! Puts the classified faces into the closest solids as internal shells.
132 //! Warns the user about unclassified faces if any.
133 Standard_EXPORT virtual void PerformInternalShapes() Standard_OVERRIDE;
137 TopTools_DataMapOfShapeBox myBoxes; // Boxes of the produced solids
141 #endif // _BOPAlgo_BuilderSolid_HeaderFile