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153 lines
5.2 KiB
C++
153 lines
5.2 KiB
C++
// Created on: 2007-08-04
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// Created by: Alexander GRIGORIEV
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// Copyright (c) 2007-2014 OPEN CASCADE SAS
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//
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// This file is part of Open CASCADE Technology software library.
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//
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// This library is free software; you can redistribute it and/or modify it under
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// the terms of the GNU Lesser General Public License version 2.1 as published
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// by the Free Software Foundation, with special exception defined in the file
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// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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// distribution for complete text of the license and disclaimer of any warranty.
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//
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// Alternatively, this file may be used under the terms of Open CASCADE
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// commercial license or contractual agreement.
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#ifndef VrmlData_ShapeConvert_HeaderFile
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#define VrmlData_ShapeConvert_HeaderFile
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#include <VrmlData_Geometry.hxx>
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#include <VrmlData_Appearance.hxx>
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#include <VrmlData_Group.hxx>
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#include <NCollection_List.hxx>
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#include <NCollection_DataMap.hxx>
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#include <TopoDS_Shape.hxx>
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class VrmlData_Scene;
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class VrmlData_Coordinate;
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class TopoDS_Face;
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class Poly_Polygon3D;
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class Poly_Triangulation;
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class XCAFPrs_Style;
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class TDocStd_Document;
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class TDF_Label;
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/**
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* Algorithm converting one shape or a set of shapes to VrmlData_Scene.
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*/
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class VrmlData_ShapeConvert
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{
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public:
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typedef struct {
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TCollection_AsciiString Name;
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TopoDS_Shape Shape;
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Handle(VrmlData_Node) Node;
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} ShapeData;
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// ---------- PUBLIC METHODS ----------
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/**
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* Constructor.
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* @param theScene
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* Scene receiving all Vrml data.
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* @param theScale
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* Scale factor, considering that VRML standard specifies coordinates in
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* meters. So if your data are in mm, you should provide theScale=0.001
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*/
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inline VrmlData_ShapeConvert (VrmlData_Scene& theScene,
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const Standard_Real theScale = 1.)
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: myScene (theScene),
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myScale (theScale),
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myDeflection(0.0),
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myDeflAngle(0.0)
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{}
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/**
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* Add one shape to the internal list, may be called several times with
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* different shapes.
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*/
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Standard_EXPORT void AddShape (const TopoDS_Shape& theShape,
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const char * theName = 0L);
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/**
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* Convert all accumulated shapes and store them in myScene.
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* The internal data structures are cleared in the end of conversion.
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* @param theExtractFaces
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* If True, converter extracst faces from the shapes.
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* @param theExtractEdges
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* If True, converter extracts edges from the shapes.
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* @param theDeflection
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* Deflection for tessellation of geometrical lines/surfaces. Existing mesh
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* is used if its deflection is smaller than the one given by this
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* parameter.
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* @param theDeflAngle
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* Angular deflection for tessellation of geometrical lines.
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*/
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Standard_EXPORT void Convert (const Standard_Boolean theExtractFaces,
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const Standard_Boolean theExtractEdges,
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const Standard_Real theDeflection = 0.01,
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const Standard_Real theDeflAngle = 20.*M_PI/180.);
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//this value of theDeflAngle is used by default
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//for tesselation while shading (Drawer->HLRAngle())
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/**
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* Add all shapes start from given document with colors and names to the internal structure
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*/
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Standard_EXPORT void ConvertDocument(const Handle(TDocStd_Document)& theDoc);
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protected:
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// ---------- PROTECTED METHODS ----------
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Handle(VrmlData_Geometry) triToIndexedFaceSet
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(const Handle(Poly_Triangulation)&,
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const TopoDS_Face&,
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const Handle(VrmlData_Coordinate)&);
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Handle(VrmlData_Geometry) polToIndexedLineSet
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(const Handle(Poly_Polygon3D)&);
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Handle(VrmlData_Appearance) defaultMaterialFace () const;
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Handle(VrmlData_Appearance) defaultMaterialEdge () const;
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Handle(VrmlData_Geometry) makeTShapeNode(const TopoDS_Shape& theShape,
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const TopAbs_ShapeEnum theShapeType,
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TopLoc_Location& theLoc);
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void addAssembly (const Handle(VrmlData_Group)& theParent,
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const TDF_Label& theLabel,
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const Handle(TDocStd_Document)& theDoc,
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const Standard_Boolean theNeedCreateGroup);
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void addInstance (const Handle(VrmlData_Group)& theParent,
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const TDF_Label& theLabel,
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const Handle(TDocStd_Document)& theDoc);
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void addShape (const Handle(VrmlData_Group)& theParent,
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const TDF_Label& theLabel,
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const Handle(TDocStd_Document)& theDoc);
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Handle(VrmlData_Appearance) makeMaterialFromStyle (const XCAFPrs_Style& theStyle,
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const TDF_Label& theAttribLab) const;
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private:
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// ---------- PRIVATE FIELDS ----------
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VrmlData_Scene& myScene;
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Standard_Real myScale;
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NCollection_List <ShapeData> myShapes;
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Standard_Real myDeflection;
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Standard_Real myDeflAngle;
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NCollection_DataMap <TopoDS_Shape, Handle(VrmlData_Geometry)> myRelMap;
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// ---------- PRIVATE METHODS ----------
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void operator= (const VrmlData_ShapeConvert&);
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};
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#endif
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