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File indexing completed on 2026-09-20 09:19:01
0001 // Created on: 1993-09-23 0002 // Created by: Jean Louis FRENKEL 0003 // Copyright (c) 1993-1999 Matra Datavision 0004 // Copyright (c) 1999-2014 OPEN CASCADE SAS 0005 // 0006 // This file is part of Open CASCADE Technology software library. 0007 // 0008 // This library is free software; you can redistribute it and/or modify it under 0009 // the terms of the GNU Lesser General Public License version 2.1 as published 0010 // by the Free Software Foundation, with special exception defined in the file 0011 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT 0012 // distribution for complete text of the license and disclaimer of any warranty. 0013 // 0014 // Alternatively, this file may be used under the terms of Open CASCADE 0015 // commercial license or contractual agreement. 0016 0017 #ifndef _StdPrs_ShadedShape_HeaderFile 0018 #define _StdPrs_ShadedShape_HeaderFile 0019 0020 #include <Prs3d_Root.hxx> 0021 #include <Prs3d_Drawer.hxx> 0022 #include <StdPrs_Volume.hxx> 0023 0024 class Graphic3d_ArrayOfSegments; 0025 class Graphic3d_ArrayOfTriangles; 0026 class TopoDS_Shape; 0027 class BRep_Builder; 0028 class TopoDS_Compound; 0029 0030 //! Auxiliary procedures to prepare Shaded presentation of specified shape. 0031 class StdPrs_ShadedShape : public Prs3d_Root 0032 { 0033 public: 0034 //! Shades <theShape>. 0035 //! @param theVolumeType defines the way how to interpret input shapes - as Closed volumes (to 0036 //! activate back-face culling and capping plane algorithms), as Open volumes (shells or solids 0037 //! with holes) or to perform Autodetection (would split input shape into two groups) 0038 Standard_EXPORT static void Add(const occ::handle<Prs3d_Presentation>& thePresentation, 0039 const TopoDS_Shape& theShape, 0040 const occ::handle<Prs3d_Drawer>& theDrawer, 0041 const StdPrs_Volume theVolume = StdPrs_Volume_Autodetection, 0042 const occ::handle<Graphic3d_Group>& theGroup = nullptr); 0043 0044 //! Shades <theShape> with texture coordinates. 0045 //! @param theVolumeType defines the way how to interpret input shapes - as Closed volumes (to 0046 //! activate back-face culling and capping plane algorithms), as Open volumes (shells or solids 0047 //! with holes) or to perform Autodetection (would split input shape into two groups) 0048 Standard_EXPORT static void Add(const occ::handle<Prs3d_Presentation>& thePresentation, 0049 const TopoDS_Shape& theShape, 0050 const occ::handle<Prs3d_Drawer>& theDrawer, 0051 const bool theHasTexels, 0052 const gp_Pnt2d& theUVOrigin, 0053 const gp_Pnt2d& theUVRepeat, 0054 const gp_Pnt2d& theUVScale, 0055 const StdPrs_Volume theVolume = StdPrs_Volume_Autodetection, 0056 const occ::handle<Graphic3d_Group>& theGroup = nullptr); 0057 0058 //! Searches closed and unclosed subshapes in shape structure and puts them 0059 //! into two compounds for separate processing of closed and unclosed sub-shapes 0060 Standard_EXPORT static void ExploreSolids(const TopoDS_Shape& theShape, 0061 const BRep_Builder& theBuilder, 0062 TopoDS_Compound& theClosed, 0063 TopoDS_Compound& theOpened, 0064 const bool theIgnore1DSubShape); 0065 0066 //! Computes wireframe presentation for free wires and vertices 0067 Standard_EXPORT static void AddWireframeForFreeElements( 0068 const occ::handle<Prs3d_Presentation>& thePrs, 0069 const TopoDS_Shape& theShape, 0070 const occ::handle<Prs3d_Drawer>& theDrawer); 0071 0072 //! Computes special wireframe presentation for faces without triangulation. 0073 Standard_EXPORT static void AddWireframeForFacesWithoutTriangles( 0074 const occ::handle<Prs3d_Presentation>& thePrs, 0075 const TopoDS_Shape& theShape, 0076 const occ::handle<Prs3d_Drawer>& theDrawer); 0077 0078 public: 0079 //! Create primitive array with triangles for specified shape. 0080 //! @param[in] theShape the shape with precomputed triangulation 0081 static occ::handle<Graphic3d_ArrayOfTriangles> FillTriangles(const TopoDS_Shape& theShape) 0082 { 0083 gp_Pnt2d aDummy; 0084 return FillTriangles(theShape, false, aDummy, aDummy, aDummy); 0085 } 0086 0087 //! Create primitive array of triangles for specified shape. 0088 //! @param theShape the shape with precomputed triangulation 0089 //! @param theHasTexels define UV coordinates in primitive array 0090 //! @param theUVOrigin origin for UV coordinates 0091 //! @param theUVRepeat repeat parameters for UV coordinates 0092 //! @param theUVScale scale coefficients for UV coordinates 0093 //! @return triangles array or NULL if specified face does not have computed triangulation 0094 Standard_EXPORT static occ::handle<Graphic3d_ArrayOfTriangles> FillTriangles( 0095 const TopoDS_Shape& theShape, 0096 const bool theHasTexels, 0097 const gp_Pnt2d& theUVOrigin, 0098 const gp_Pnt2d& theUVRepeat, 0099 const gp_Pnt2d& theUVScale); 0100 0101 //! Define primitive array of boundary segments for specified shape. 0102 //! @param theShape segments array or NULL if specified face does not have computed triangulation 0103 //! @param theUpperContinuity the most edge continuity class to be included to result (edges with 0104 //! more continuity will be ignored) 0105 Standard_EXPORT static occ::handle<Graphic3d_ArrayOfSegments> FillFaceBoundaries( 0106 const TopoDS_Shape& theShape, 0107 GeomAbs_Shape theUpperContinuity = GeomAbs_CN); 0108 }; 0109 0110 #endif // _StdPrs_ShadedShape_HeaderFile
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