0031124: Configuration - linker errors when building with CLang on Windows
[occt.git] / src / RWObj / RWObj_TriangulationReader.hxx
1 // Author: Kirill Gavrilov
2 // Copyright (c) 2019 OPEN CASCADE SAS
3 //
4 // This file is part of Open CASCADE Technology software library.
5 //
6 // This library is free software; you can redistribute it and/or modify it under
7 // the terms of the GNU Lesser General Public License version 2.1 as published
8 // by the Free Software Foundation, with special exception defined in the file
9 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
10 // distribution for complete text of the license and disclaimer of any warranty.
11 //
12 // Alternatively, this file may be used under the terms of Open CASCADE
13 // commercial license or contractual agreement.
14
15 #ifndef _RWObj_TriangulationReader_HeaderFile
16 #define _RWObj_TriangulationReader_HeaderFile
17
18 #include <RWObj_Reader.hxx>
19
20 #include <Poly_Triangulation.hxx>
21 #include <TopoDS_Compound.hxx>
22
23 //! Interface to store shape attributes into document.
24 class RWObj_IShapeReceiver
25 {
26 public:
27   //! @param theShape       shape to register
28   //! @param theName        shape name
29   //! @param theMaterial    shape material
30   //! @param theIsRootShape indicates that this is a root object (free shape)
31   virtual void BindNamedShape (const TopoDS_Shape& theShape,
32                                const TCollection_AsciiString& theName,
33                                const RWObj_Material* theMaterial,
34                                const Standard_Boolean theIsRootShape) = 0;
35 };
36
37 //! RWObj_Reader implementation dumping OBJ file into Poly_Triangulation.
38 class RWObj_TriangulationReader : public RWObj_Reader
39 {
40   DEFINE_STANDARD_RTTIEXT(RWObj_TriangulationReader, RWObj_Reader)
41 public:
42
43   //! Constructor.
44   RWObj_TriangulationReader() : myShapeReceiver (NULL), myToCreateShapes (Standard_True) {}
45
46   //! Set flag to create shapes.
47   void SetCreateShapes (Standard_Boolean theToCreateShapes) { myToCreateShapes = theToCreateShapes; }
48
49   //! Set shape receiver callback.
50   void SetShapeReceiver (RWObj_IShapeReceiver* theReceiver) { myShapeReceiver = theReceiver; }
51
52   //! Create Poly_Triangulation from collected data
53   Standard_EXPORT virtual Handle(Poly_Triangulation) GetTriangulation();
54
55   //! Return result shape.
56   Standard_EXPORT TopoDS_Shape ResultShape();
57
58 protected:
59
60   //! Flush active sub-mesh.
61   Standard_EXPORT virtual Standard_Boolean addMesh (const RWObj_SubMesh& theMesh,
62                                                     const RWObj_SubMeshReason theReason) Standard_OVERRIDE;
63
64   //! Retrieve sub-mesh node position.
65   virtual gp_Pnt getNode (Standard_Integer theIndex) const Standard_OVERRIDE
66   {
67     return myNodes.Value (theIndex - 1);
68   }
69
70   //! Add new node.
71   virtual Standard_Integer addNode (const gp_Pnt& thePnt) Standard_OVERRIDE
72   {
73     myNodes.Append (thePnt);
74     return myNodes.Size();
75   }
76
77   //! Ignore normal.
78   virtual void setNodeNormal (const Standard_Integer theIndex,
79                               const Graphic3d_Vec3&  theNormal) Standard_OVERRIDE
80   {
81     myNormals.SetValue (theIndex - 1, theNormal);
82   }
83
84   //! Ignore texture coordinates.
85   virtual void setNodeUV (const Standard_Integer theIndex,
86                           const Graphic3d_Vec2&  theUV) Standard_OVERRIDE
87   {
88     myNodesUV.SetValue (theIndex - 1, theUV);
89   }
90
91   //! Add element.
92   virtual void addElement (Standard_Integer theN1, Standard_Integer theN2, Standard_Integer theN3, Standard_Integer theN4) Standard_OVERRIDE
93   {
94     myTriangles.Append (Poly_Triangle (theN1, theN2, theN3));
95     if (theN4 != -1)
96     {
97       myTriangles.Append (Poly_Triangle (theN1, theN3, theN4));
98     }
99   }
100
101 protected:
102
103   //! Add sub-shape into specified shape
104   Standard_EXPORT Standard_Boolean addSubShape (TopoDS_Shape& theParent,
105                                                 const TopoDS_Shape& theSubShape,
106                                                 const Standard_Boolean theToExpandCompound);
107
108 protected:
109
110   NCollection_Vector<gp_Pnt>         myNodes;     //!< nodes   of currently filled triangulation
111   NCollection_Vector<Graphic3d_Vec3> myNormals;   //!< normals of currently filled triangulation
112   NCollection_Vector<Graphic3d_Vec2> myNodesUV;   //!< UVs     of currently filled triangulation
113   NCollection_Vector<Poly_Triangle>  myTriangles; //!< indexes of currently filled triangulation
114
115   RWObj_IShapeReceiver*   myShapeReceiver;   //!< optional shape receiver
116   TopoDS_Compound         myResultShape;     //!< result shape as Compound of objects
117   TopoDS_Compound         myLastObjectShape; //!< Compound containing current object groups
118   TopoDS_Shape            myLastGroupShape;  //!< current group shape - either a single Face or Compound of Faces
119   TCollection_AsciiString myLastGroupName;   //!< current group name
120   TCollection_AsciiString myLastFaceMaterial;//!< last face material name
121   Standard_Boolean        myToCreateShapes;  //!< create a single triangulation
122
123 };
124
125 #endif // _RWObj_TriangulationReader_HeaderFile