0026106: BRepMesh - revision of data model

[occt.git] / src / BRepMesh / BRepMesh_CurveTessellator.hxx

diff --git a/src/BRepMesh/BRepMesh_CurveTessellator.hxx b/src/BRepMesh/BRepMesh_CurveTessellator.hxx
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+// Created on: 2016-04-19
+// Copyright (c) 2016 OPEN CASCADE SAS
+// Created by: Oleg AGASHIN
+//
+// This file is part of Open CASCADE Technology software library.
+//
+// This library is free software; you can redistribute it and/or modify it under
+// the terms of the GNU Lesser General Public License version 2.1 as published
+// by the Free Software Foundation, with special exception defined in the file
+// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
+// distribution for complete text of the license and disclaimer of any warranty.
+//
+// Alternatively, this file may be used under the terms of Open CASCADE
+// commercial license or contractual agreement.
+
+#ifndef _BRepMesh_EdgeTessellator_HeaderFile
+#define _BRepMesh_EdgeTessellator_HeaderFile
+
+#include <IMeshTools_CurveTessellator.hxx>
+#include <GCPnts_TangentialDeflection.hxx>
+#include <TopoDS_Vertex.hxx>
+#include <BRepAdaptor_Curve.hxx>
+#include <IMeshData_Types.hxx>
+
+class TopoDS_Face;
+class Geom_Surface;
+class Geom2d_Curve;
+struct IMeshTools_Parameters;
+
+//! Auxiliary class performing tessellation of passed edge according to specified parameters.
+class BRepMesh_CurveTessellator : public IMeshTools_CurveTessellator
+{
+public:
+
+  //! Constructor.
+  Standard_EXPORT BRepMesh_CurveTessellator(
+    const IMeshData::IEdgeHandle& theEdge,
+    const IMeshTools_Parameters&  theParameters);
+
+  //! Constructor.
+  Standard_EXPORT BRepMesh_CurveTessellator (
+    const IMeshData::IEdgeHandle& theEdge,
+    const TopAbs_Orientation      theOrientation,
+    const IMeshData::IFaceHandle& theFace,
+    const IMeshTools_Parameters&  theParameters);
+
+  //! Destructor.
+  Standard_EXPORT virtual ~BRepMesh_CurveTessellator ();
+
+  //! Returns number of tessellation points.
+  Standard_EXPORT virtual Standard_Integer PointsNb () const Standard_OVERRIDE;
+
+  //! Returns parameters of solution with the given index.
+  //! @param theIndex index of tessellation point.
+  //! @param theParameter parameters on PCurve corresponded to the solution.
+  //! @param thePoint tessellation point.
+  //! @return True in case of valid result, false elewhere.
+  Standard_EXPORT virtual Standard_Boolean Value (
+    const Standard_Integer theIndex,
+    gp_Pnt&                thePoint,
+    Standard_Real&         theParameter) const Standard_OVERRIDE;
+
+  DEFINE_STANDARD_RTTI_INLINE(BRepMesh_CurveTessellator, IMeshTools_CurveTessellator)
+
+private:
+
+  //! Performs initialization of this tool.
+  void init();
+
+  //! Adds internal vertices to discrete polygon.
+  void addInternalVertices ();
+
+  //Check deflection in 2d space for improvement of edge tesselation.
+  void splitByDeflection2d ();
+
+  void splitSegment (
+    const Handle (Geom_Surface)& theSurf,
+    const Handle (Geom2d_Curve)& theCurve2d,
+    const Standard_Real          theFirst,
+    const Standard_Real          theLast,
+    const Standard_Integer       theNbIter);
+
+  //! Checks whether the given point lies within tolerance of the vertex.
+  Standard_Boolean isInToleranceOfVertex (
+    const gp_Pnt&        thePoint,
+    const TopoDS_Vertex& theVertex) const;
+
+private:
+
+  BRepMesh_CurveTessellator (const BRepMesh_CurveTessellator& theOther);
+
+  void operator=(const BRepMesh_CurveTessellator& theOther);
+
+private:
+
+  const IMeshData::IEdgeHandle& myDEdge;
+  const IMeshTools_Parameters&  myParameters;
+  TopoDS_Edge                   myEdge;
+  BRepAdaptor_Curve             myCurve;
+  GCPnts_TangentialDeflection   myDiscretTool;
+  TopoDS_Vertex                 myFirstVertex;
+  TopoDS_Vertex                 myLastVertex;
+  Standard_Real                 mySquareEdgeDef;
+  Standard_Real                 mySquareMinSize;
+  Standard_Real                 myEdgeSqTol;
+  Standard_Real                 myFaceRangeU[2];
+  Standard_Real                 myFaceRangeV[2];
+};
+
+#endif
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