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201 lines
8.4 KiB
C++
201 lines
8.4 KiB
C++
// Copyright (c) 2013 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 _BRepMesh_FastDiscretFace_HeaderFile
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#define _BRepMesh_FastDiscretFace_HeaderFile
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#include <Standard.hxx>
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#include <Standard_Type.hxx>
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#include <BRepMesh_FastDiscretFace.hxx>
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#include <BRepMesh_DataStructureOfDelaun.hxx>
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#include <BRepMesh.hxx>
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#include <BRepMesh_FaceAttribute.hxx>
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#include <Standard_Transient.hxx>
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#include <TopTools_MutexForShapeProvider.hxx>
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#include <TopTools_DataMapOfShapeReal.hxx>
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#include <BRepMesh_Delaun.hxx>
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#include <BRepMesh_Triangle.hxx>
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#include <BRepMesh_Classifier.hxx>
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#include <ElSLib.hxx>
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class BRepMesh_DataStructureOfDelaun;
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class BRepMesh_FaceAttribute;
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class TopoDS_Face;
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class TopoDS_Vertex;
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class BRepAdaptor_HSurface;
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class TopoDS_Edge;
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class Poly_Triangulation;
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class TopLoc_Location;
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class gp_XY;
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class gp_Pnt2d;
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class BRepMesh_Edge;
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class BRepMesh_Vertex;
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class gp_Pnt;
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//! Algorithm to mesh a face with respect of the frontier
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//! the deflection and by option the shared components.
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class BRepMesh_FastDiscretFace : public Standard_Transient
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{
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public:
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//! Constructor.
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//! @param theAngle deviation angle to be used for surface tessellation.
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//! @param isInternalVerticesMode flag enabling/disabling internal
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//! vertices mode.
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//! @param isControlSurfaceDeflection enables/disables adaptive
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//! reconfiguration of mesh.
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Standard_EXPORT BRepMesh_FastDiscretFace(
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const Standard_Real theAngle,
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const Standard_Real theMinSize,
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const Standard_Boolean isInternalVerticesMode,
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const Standard_Boolean isControlSurfaceDeflection);
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Standard_EXPORT void Perform(const Handle(BRepMesh_FaceAttribute)& theAttribute);
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DEFINE_STANDARD_RTTI(BRepMesh_FastDiscretFace, Standard_Transient)
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private:
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void add(const Handle(BRepMesh_FaceAttribute)& theAttribute);
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void add(const TopoDS_Vertex& theVertex);
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Standard_Real control(BRepMesh::ListOfVertex& theNewVertices,
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BRepMesh_Delaun& theMeshBuilder,
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const Standard_Boolean theIsFirst);
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//! Registers the given nodes in mesh data structure and
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//! performs refinement of existing mesh.
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//! @param theVertices nodes to be inserted.
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//! @param theMeshBuilder initialized tool refining mesh
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//! in respect to inserting nodes.
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//! @return TRUE if vertices were been inserted, FALSE elewhere.
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Standard_Boolean addVerticesToMesh(
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const BRepMesh::ListOfVertex& theVertices,
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BRepMesh_Delaun& theMeshBuilder);
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//! Calculates nodes lying on face's surface and inserts them to a mesh.
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//! @param theNewVertices list of vertices to be extended and added to mesh.
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//! @param theMeshBuilder initialized tool refining mesh
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//! in respect to inserting nodes.
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void insertInternalVertices(BRepMesh::ListOfVertex& theNewVertices,
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BRepMesh_Delaun& theMeshBuilder);
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//! Calculates nodes lying on spherical surface.
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//! @param theNewVertices list of vertices to be extended and added to mesh.
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void insertInternalVerticesSphere(BRepMesh::ListOfVertex& theNewVertices);
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//! Calculates nodes lying on cylindrical surface.
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//! @param theNewVertices list of vertices to be extended and added to mesh.
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void insertInternalVerticesCylinder(BRepMesh::ListOfVertex& theNewVertices);
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//! Calculates nodes lying on conical surface.
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//! @param theNewVertices list of vertices to be extended and added to mesh.
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void insertInternalVerticesCone(BRepMesh::ListOfVertex& theNewVertices);
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//! Calculates nodes lying on toroidal surface.
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//! @param theNewVertices list of vertices to be extended and added to mesh.
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void insertInternalVerticesTorus(BRepMesh::ListOfVertex& theNewVertices);
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//! Calculates nodes lying on Bezier/BSpline surface.
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//! @param theNewVertices list of vertices to be extended and added to mesh.
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void insertInternalVerticesBSpline(BRepMesh::ListOfVertex& theNewVertices);
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//! Calculates nodes lying on custom-type surface.
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//! @param theNewVertices list of vertices to be extended and added to mesh.
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void insertInternalVerticesOther(BRepMesh::ListOfVertex& theNewVertices);
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//! Template method trying to insert new internal vertex corresponded to
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//! the given 2d point. Calculates 3d position analytically using the given
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//! surface.
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//! @param thePnt2d 2d point to be inserted to the list.
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//! @param theAnalyticSurface analytic surface to calculate 3d point.
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//! @param[out] theVertices list of vertices to be updated.
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template<class AnalyticSurface>
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void tryToInsertAnalyticVertex(const gp_Pnt2d& thePnt2d,
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const AnalyticSurface& theAnalyticSurface,
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BRepMesh::ListOfVertex& theVertices)
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{
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const BRepMesh::HClassifier& aClassifier = myAttribute->ChangeClassifier();
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if (aClassifier->Perform(thePnt2d) != TopAbs_IN)
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return;
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gp_Pnt aPnt;
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ElSLib::D0(thePnt2d.X(), thePnt2d.Y(), theAnalyticSurface, aPnt);
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insertVertex(aPnt, thePnt2d.Coord(), theVertices);
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}
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//! Creates new vertex with the given parameters.
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//! @param thePnt3d 3d point corresponded to the vertex.
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//! @param theUV UV point corresponded to the vertex.
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//! @param[out] theVertices list of vertices to be updated.
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void insertVertex(const gp_Pnt& thePnt3d,
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const gp_XY& theUV,
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BRepMesh::ListOfVertex& theVertices);
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//! Stores mesh into the face (without internal edges).
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void commitSurfaceTriangulation();
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//! Performs initialization of data structure using existing data.
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void initDataStructure();
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//! Adds new link to the mesh data structure.
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//! Movability of the link and order of nodes depend on orientation parameter.
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void addLinkToMesh(const Standard_Integer theFirstNodeId,
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const Standard_Integer theLastNodeId,
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const TopAbs_Orientation theOrientation);
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//! Inserts new node into a mesh in case if smoothed region build
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//! using the given node has better deflection metrics than source state.
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//! @param thePnt3d 3d point corresponded to the vertex.
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//! @param theUV UV point corresponded to the vertex.
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//! @param isDeflectionCheckOnly if TRUE new node will not be added to a mesh
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//! even if deflection parameter is better.
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//! @param theTriangleDeflection deflection of a triangle from real geometry.
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//! @param theFaceDeflection deflection to be achieved.
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//! @param theCircleTool tool used for fast extraction of triangles
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//! touched by the given point.
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//! @param[out] theVertices list of vertices to be updated.
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//! @param[in out] theMaxTriangleDeflection maximal deflection of a mesh.
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//! @return TRUE in case if the given deflection of triangle is fine and
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//! there is no necessity to insert new node or new node was being inserted
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//! successfully, FALSE in case if new configuration is better but
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//! isDeflectionCheckOnly flag is set.
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Standard_Boolean checkDeflectionAndInsert(
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const gp_Pnt& thePnt3d,
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const gp_XY& theUV,
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const Standard_Boolean isDeflectionCheckOnly,
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const Standard_Real theTriangleDeflection,
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const Standard_Real theFaceDeflection,
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const BRepMesh_CircleTool& theCircleTool,
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BRepMesh::ListOfVertex& theVertices,
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Standard_Real& theMaxTriangleDeflection);
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private:
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Standard_Real myAngle;
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Standard_Boolean myInternalVerticesMode;
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BRepMesh::IMapOfReal myUParam;
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BRepMesh::IMapOfReal myVParam;
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// Fast access to attributes of current face
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Handle(BRepMesh_FaceAttribute) myAttribute;
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Handle(BRepMesh_DataStructureOfDelaun) myStructure;
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Standard_Real myMinSize;
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Standard_Boolean myIsControlSurfaceDeflection;
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};
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DEFINE_STANDARD_HANDLE (BRepMesh_FastDiscretFace, Standard_Transient)
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#endif
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