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3483c64453
IVtkOCC_Shape now stores Prs3d_Drawer object used by IVtkOCC_ShapeMesher and IVtkOCC_SelectableObject. IVtkOCC_ShapeMesher::internalBuild() made more consistent to AIS_Shape::Compute() in cleaning/triangulating shape. Added command ivtkdefaults similar to vdefaults managing triangulation default parameters.
148 lines
6.1 KiB
C++
148 lines
6.1 KiB
C++
// Created on: 2011-10-14
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// Created by: Roman KOZLOV
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// Copyright (c) 2011-2014 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 __IVTKOCC_SHAPEMESHER_H__
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#define __IVTKOCC_SHAPEMESHER_H__
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#include <IVtkOCC_Shape.hxx>
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#include <IVtk_IShapeMesher.hxx>
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#include <TColgp_Array1OfPnt.hxx>
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#include <TColStd_Array1OfInteger.hxx>
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#include <TopoDS.hxx>
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#include <TopoDS_Edge.hxx>
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#include <TopoDS_Face.hxx>
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#include <TopoDS_Vertex.hxx>
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#include <TopTools_ShapeMapHasher.hxx>
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typedef NCollection_DataMap <TopoDS_Shape, IVtk_MeshType, TopTools_ShapeMapHasher> IVtk_ShapeTypeMap;
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typedef NCollection_Sequence <gp_Pnt> IVtk_Polyline;
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typedef NCollection_List <IVtk_Polyline> IVtk_PolylineList;
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class Prs3d_Drawer;
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class IVtkOCC_ShapeMesher;
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DEFINE_STANDARD_HANDLE( IVtkOCC_ShapeMesher, IVtk_IShapeMesher )
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//! @class IVtkOCC_ShapeMesher
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//! @brief OCC implementation of IMesher interface.
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//!
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//! Mesher produces shape data using implementation of IShapeData interface for
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//! VTK and then result can be retrieved from this implementation as a vtkPolyData:
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//! @image html doc/img/image002.gif
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//! Then the resulting vtkPolyData can be used for initialization of VTK pipeline.
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class IVtkOCC_ShapeMesher : public IVtk_IShapeMesher
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{
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public:
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//! Main constructor.
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Standard_EXPORT IVtkOCC_ShapeMesher();
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//! Destructor.
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Standard_EXPORT virtual ~IVtkOCC_ShapeMesher();
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//! Returns absolute deflection used by this algorithm.
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//! This value is calculated on the basis of the shape's bounding box.
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//! Zero might be returned in case if the underlying OCCT shape
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//! is empty or invalid. Thus check the returned value before
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//! passing it to OCCT meshing algorithms!
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//! @return absolute deflection value
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Standard_EXPORT Standard_Real GetDeflection() const;
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//! Returns relative deviation coefficient used by this algorithm.
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//! @return relative deviation coefficient
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Standard_EXPORT Standard_Real GetDeviationCoeff() const;
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//! Returns deviation angle used by this algorithm.
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//! This is the maximum allowed angle between the normals to the
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//! curve/surface and the normals to polyline/faceted representation.
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//! @return deviation angle (in radians)
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Standard_EXPORT Standard_Real GetDeviationAngle() const;
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protected:
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//! Executes the mesh generation algorithms. To be defined in implementation class.
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Standard_EXPORT virtual void internalBuild() Standard_OVERRIDE;
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private:
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//! Extracts free vertices from the shape (i.e. those not belonging to any edge)
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//! and passes the geometry to IPolyData.
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//! Each vertex is associated with its sub-shape ID.
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void addFreeVertices();
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//! Adds all the edges (free and non-free) to IPolyData.
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void addEdges();
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//! Adds the point coordinates, connectivity info and
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//! sub-shape ID for the OCCT vertex.
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//!
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//! @param theVertex OCCT vertex to be added to the mesh
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//! @param theShapeId global point ID needed for connectivity data creation
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void addVertex (const TopoDS_Vertex& theVertex,
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const IVtk_IdType theShapeId,
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const IVtk_MeshType theMeshType);
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//! Adds the point coordinates and a polyline for the OCCT edge.
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//! Note that the edge should be triangulated in advance.
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//!
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//! @param theEdge OCCT edge to be meshed
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//! @param theShapeId the edge's subshape ID
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//! @see IVtkOCC_ShapeMesher::meshShape
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void addEdge (const TopoDS_Edge& theEdge,
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const IVtk_IdType theShapeId,
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const IVtk_MeshType theMeshType);
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//! Generates wireframe representation of the given TopoDS_Face object
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//! with help of OCCT algorithms. The resulting polylines are passed to IPolyData
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//! interface and associated with the given sub-shape ID.
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//! @param [in] theFace TopoDS_Face object to build wireframe representation for
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//! @param [in] theShapeId The face' sub-shape ID
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//! @param [in] theDeflection curve deflection
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void addWFFace (const TopoDS_Face& theFace,
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const IVtk_IdType theShapeId,
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const Standard_Real theDeflection);
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//! Creates shaded representation of the given TopoDS_Face object
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//! starting from OCCT triangulation that should be created in advance.
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//! The resulting triangles are passed to IPolyData
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//! interface and associated with the given sub-shape ID.
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//! @param [in] theFace TopoDS_Face object to build shaded representation for
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//! @param [in] theShapeId the face' sub-shape ID
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//! @see IVtkOCC_ShapeMesher::meshShape, IVtkOCC_ShapeMesher::addEdge
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void addShadedFace (const TopoDS_Face& theFace,
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const IVtk_IdType theShapeId);
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//! Internal helper method that unpacks the input arrays of points and
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//! connectivity and creates the polyline using IPolyData interface.
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//! Optionally, the transformation specified through the last argument
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//! can be applied to each point's coordinates (noTransform == true).
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//! The polyline is associated with the given sub-shape ID.
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void processPolyline (Standard_Integer theNbNodes,
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const TColgp_Array1OfPnt& thePoints,
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const TColStd_Array1OfInteger& thePointIds,
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const IVtk_IdType theOcctId,
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bool theNoTransform,
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gp_Trsf theTransformation,
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const IVtk_MeshType theMeshType);
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//! Get the IShape as OCC implementation
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const IVtkOCC_Shape::Handle GetShapeObj() const;
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DEFINE_STANDARD_RTTIEXT(IVtkOCC_ShapeMesher,IVtk_IShapeMesher)
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private:
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IVtk_ShapeTypeMap myEdgesTypes;
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};
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#endif // __IVTKOCC_SHAPEMESHER_H__
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