0033661: Data Exchange, Step Import - Tessellated GDTs are not imported
[occt.git] / src / StdPrs / StdPrs_ShadedShape.hxx
1 // Created on: 1993-09-23
2 // Created by: Jean Louis FRENKEL
3 // Copyright (c) 1993-1999 Matra Datavision
4 // Copyright (c) 1999-2014 OPEN CASCADE SAS
5 //
6 // This file is part of Open CASCADE Technology software library.
7 //
8 // This library is free software; you can redistribute it and/or modify it under
9 // the terms of the GNU Lesser General Public License version 2.1 as published
10 // by the Free Software Foundation, with special exception defined in the file
11 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
12 // distribution for complete text of the license and disclaimer of any warranty.
13 //
14 // Alternatively, this file may be used under the terms of Open CASCADE
15 // commercial license or contractual agreement.
16
17 #ifndef _StdPrs_ShadedShape_HeaderFile
18 #define _StdPrs_ShadedShape_HeaderFile
19
20 #include <Prs3d_Root.hxx>
21 #include <Prs3d_Drawer.hxx>
22 #include <StdPrs_Volume.hxx>
23
24 class Graphic3d_ArrayOfSegments;
25 class Graphic3d_ArrayOfTriangles;
26 class TopoDS_Shape;
27 class BRep_Builder;
28 class TopoDS_Compound;
29
30 //! Auxiliary procedures to prepare Shaded presentation of specified shape.
31 class StdPrs_ShadedShape : public Prs3d_Root
32 {
33 public:
34   
35   //! Shades <theShape>.
36   //! @param theVolumeType defines the way how to interpret input shapes - as Closed volumes (to activate back-face
37   //! culling and capping plane algorithms), as Open volumes (shells or solids with holes)
38   //! or to perform Autodetection (would split input shape into two groups)
39   Standard_EXPORT static void Add (const Handle(Prs3d_Presentation)& thePresentation, const TopoDS_Shape& theShape, const Handle(Prs3d_Drawer)& theDrawer, const StdPrs_Volume theVolume = StdPrs_Volume_Autodetection, const Handle(Graphic3d_Group)& theGroup = NULL);
40   
41   //! Shades <theShape> with texture coordinates.
42   //! @param theVolumeType defines the way how to interpret input shapes - as Closed volumes (to activate back-face
43   //! culling and capping plane algorithms), as Open volumes (shells or solids with holes)
44   //! or to perform Autodetection (would split input shape into two groups)
45   Standard_EXPORT static void Add (const Handle(Prs3d_Presentation)& thePresentation, const TopoDS_Shape& theShape, const Handle(Prs3d_Drawer)& theDrawer, const Standard_Boolean theHasTexels, const gp_Pnt2d& theUVOrigin, const gp_Pnt2d& theUVRepeat, const gp_Pnt2d& theUVScale, const StdPrs_Volume theVolume = StdPrs_Volume_Autodetection, const Handle(Graphic3d_Group)& theGroup = NULL);
46   
47   //! Searches closed and unclosed subshapes in shape structure and puts them
48   //! into two compounds for separate processing of closed and unclosed sub-shapes
49   Standard_EXPORT static void ExploreSolids (const TopoDS_Shape& theShape, const BRep_Builder& theBuilder, TopoDS_Compound& theClosed, TopoDS_Compound& theOpened, const Standard_Boolean theIgnore1DSubShape);
50
51   //! Computes wireframe presentation for free wires and vertices
52   Standard_EXPORT static void AddWireframeForFreeElements (const Handle(Prs3d_Presentation)& thePrs,
53                                                            const TopoDS_Shape&               theShape,
54                                                            const Handle(Prs3d_Drawer)&       theDrawer);
55
56   //! Computes special wireframe presentation for faces without triangulation.
57   Standard_EXPORT static void AddWireframeForFacesWithoutTriangles (const Handle(Prs3d_Presentation)& thePrs,
58                                                                     const TopoDS_Shape&               theShape,
59                                                                     const Handle(Prs3d_Drawer)&       theDrawer);
60
61 public:
62
63   //! Create primitive array with triangles for specified shape.
64   //! @param theShape [in] the shape with precomputed triangulation
65   static Handle(Graphic3d_ArrayOfTriangles) FillTriangles (const TopoDS_Shape& theShape)
66   {
67     gp_Pnt2d aDummy;
68     return FillTriangles (theShape, Standard_False, aDummy, aDummy, aDummy);
69   }
70
71   //! Create primitive array of triangles for specified shape.
72   //! @param theShape     the shape with precomputed triangulation
73   //! @param theHasTexels define UV coordinates in primitive array
74   //! @param theUVOrigin  origin for UV coordinates
75   //! @param theUVRepeat  repeat parameters  for UV coordinates
76   //! @param theUVScale   scale coefficients for UV coordinates
77   //! @return triangles array or NULL if specified face does not have computed triangulation
78   Standard_EXPORT static Handle(Graphic3d_ArrayOfTriangles) FillTriangles (const TopoDS_Shape&    theShape,
79                                                                            const Standard_Boolean theHasTexels,
80                                                                            const gp_Pnt2d&        theUVOrigin,
81                                                                            const gp_Pnt2d&        theUVRepeat,
82                                                                            const gp_Pnt2d&        theUVScale);
83
84   //! Define primitive array of boundary segments for specified shape.
85   //! @param theShape segments array or NULL if specified face does not have computed triangulation
86   //! @param theUpperContinuity the most edge continuity class to be included to result (edges with more continuity will be ignored)
87   Standard_EXPORT static Handle(Graphic3d_ArrayOfSegments) FillFaceBoundaries (const TopoDS_Shape& theShape,
88                                                                                GeomAbs_Shape theUpperContinuity = GeomAbs_CN);
89
90 };
91
92 #endif // _StdPrs_ShadedShape_HeaderFile