// Created by: Peter KURNEV // Copyright (c) 1999-2014 OPEN CASCADE SAS // // 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 _BOPTools_AlgoTools3D_HeaderFile #define _BOPTools_AlgoTools3D_HeaderFile #include #include #include #include class TopoDS_Edge; class TopoDS_Face; class gp_Dir; class Geom_Surface; class Geom2d_Curve; class gp_Pnt; class IntTools_Context; class gp_Pnt2d; class TopoDS_Shape; //! The class contains handy static functions //! dealing with the topology //! This is the copy of BOPTools_AlgoTools3D.cdl file class BOPTools_AlgoTools3D { public: DEFINE_STANDARD_ALLOC //! Makes the edge seam edge for the face basing on the surface properties (U and V periods) Standard_EXPORT static Standard_Boolean DoSplitSEAMOnFace (const TopoDS_Edge& theESplit, const TopoDS_Face& theFace); //! Makes the split edge seam edge for the face basing on the positions //! of 2d curves of the original edge . Standard_EXPORT static Standard_Boolean DoSplitSEAMOnFace (const TopoDS_Edge& theEOrigin, const TopoDS_Edge& theESplit, const TopoDS_Face& theFace); //! Computes normal to the face for the point on the edge //! at parameter .
//! - storage for caching the geometrical tools Standard_EXPORT static void GetNormalToFaceOnEdge (const TopoDS_Edge& aE, const TopoDS_Face& aF, const Standard_Real aT, gp_Dir& aD, const Handle(IntTools_Context)& theContext = Handle(IntTools_Context)()); //! Computes normal to the face for the point on the edge //! at arbitrary intermediate parameter.
//! - storage for caching the geometrical tools Standard_EXPORT static void GetNormalToFaceOnEdge (const TopoDS_Edge& aE, const TopoDS_Face& aF, gp_Dir& aD, const Handle(IntTools_Context)& theContext = Handle(IntTools_Context)()); //! Returns 1 if scalar product aNF1* aNF2>0.
//! Returns 0 if directions aNF1 aNF2 coincide
//! Returns -1 if scalar product aNF1* aNF2<0. Standard_EXPORT static Standard_Integer SenseFlag (const gp_Dir& aNF1, const gp_Dir& aNF2); //! Compute normal to surface in point (U,V) //! Returns TRUE if directions aD1U, aD1V coincide Standard_EXPORT static Standard_Boolean GetNormalToSurface (const Handle(Geom_Surface)& aS, const Standard_Real U, const Standard_Real V, gp_Dir& aD); //! Computes normal to the face for the 3D-point that //! belongs to the edge at parameter .
//! Output:
//! aPx - the 3D-point where the normal computed
//! aD - the normal;
//! Warning:
//! The normal is computed not exactly in the point on the //! edge, but in point that is near to the edge towards to //! the face material (so, we'll have approx. normal);
//! The point is computed using PointNearEdge function, //! with the shifting value BOPTools_AlgoTools3D::MinStepIn2d(), //! from the edge, but if this value is too big, //! the point will be computed using Hatcher (PointInFace function).
//! Returns TRUE in case of success. Standard_EXPORT static Standard_Boolean GetApproxNormalToFaceOnEdge (const TopoDS_Edge& aE, const TopoDS_Face& aF, const Standard_Real aT, gp_Pnt& aPx, gp_Dir& aD, const Handle(IntTools_Context)& theContext); //! Computes normal to the face for the 3D-point that //! belongs to the edge at parameter .
//! Output:
//! aPx - the 3D-point where the normal computed
//! aD - the normal;
//! Warning:
//! The normal is computed not exactly in the point on the //! edge, but in point that is near to the edge towards to //! the face material (so, we'll have approx. normal);
//! The point is computed using PointNearEdge function //! with the shifting value from the edge;
//! No checks on this value will be done.
//! Returns TRUE in case of success. Standard_EXPORT static Standard_Boolean GetApproxNormalToFaceOnEdge (const TopoDS_Edge& theE, const TopoDS_Face& theF, const Standard_Real aT, gp_Pnt& aP, gp_Dir& aDNF, const Standard_Real aDt2D); //! Computes normal to the face for the 3D-point that //! belongs to the edge at parameter .
//! Output:
//! aPx - the 3D-point where the normal computed
//! aD - the normal;
//! Warning:
//! The normal is computed not exactly in the point on the //! edge, but in point that is near to the edge towards to //! the face material (so, we'll have approx. normal);
//! The point is computed using PointNearEdge function //! with the shifting value from the edge, //! but if this value is too big the point will be //! computed using Hatcher (PointInFace function).
//! Returns TRUE in case of success. Standard_EXPORT static Standard_Boolean GetApproxNormalToFaceOnEdge (const TopoDS_Edge& theE, const TopoDS_Face& theF, const Standard_Real aT, const Standard_Real aDt2D, gp_Pnt& aP, gp_Dir& aDNF, const Handle(IntTools_Context)& theContext); //! Compute the point , () that is near to //! the edge at parameter towards to the //! material of the face . The value of shifting in //! 2D is
//! If the value of shifting is too big the point //! will be computed using Hatcher (PointInFace function).
//! Returns error status:
//! 0 - in case of success;
//! 1 - does not have 2d curve on the face ;
//! 2 - the computed point is out of the face. Standard_EXPORT static Standard_Integer PointNearEdge (const TopoDS_Edge& aE, const TopoDS_Face& aF, const Standard_Real aT, const Standard_Real aDt2D, gp_Pnt2d& aP2D, gp_Pnt& aPx, const Handle(IntTools_Context)& theContext); //! Compute the point , () that is near to //! the edge at parameter towards to the //! material of the face . The value of shifting in //! 2D is . No checks on this value will be done.
//! Returns error status:
//! 0 - in case of success;
//! 1 - does not have 2d curve on the face . Standard_EXPORT static Standard_Integer PointNearEdge (const TopoDS_Edge& aE, const TopoDS_Face& aF, const Standard_Real aT, const Standard_Real aDt2D, gp_Pnt2d& aP2D, gp_Pnt& aPx); //! Computes the point , () that is near to //! the edge at parameter towards to the //! material of the face . The value of shifting in //! 2D is dt2D=BOPTools_AlgoTools3D::MinStepIn2d()
//! If the value of shifting is too big the point will be computed //! using Hatcher (PointInFace function).
//! Returns error status:
//! 0 - in case of success;
//! 1 - does not have 2d curve on the face ;
//! 2 - the computed point is out of the face. Standard_EXPORT static Standard_Integer PointNearEdge (const TopoDS_Edge& aE, const TopoDS_Face& aF, const Standard_Real aT, gp_Pnt2d& aP2D, gp_Pnt& aPx, const Handle(IntTools_Context)& theContext); //! Compute the point , () that is near to //! the edge at arbitrary parameter towards to the //! material of the face . The value of shifting in //! 2D is dt2D=BOPTools_AlgoTools3D::MinStepIn2d().
//! If the value of shifting is too big the point will be computed //! using Hatcher (PointInFace function).
//! Returns error status:
//! 0 - in case of success;
//! 1 - does not have 2d curve on the face ;
//! 2 - the computed point is out of the face. Standard_EXPORT static Standard_Integer PointNearEdge (const TopoDS_Edge& aE, const TopoDS_Face& aF, gp_Pnt2d& aP2D, gp_Pnt& aPx, const Handle(IntTools_Context)& theContext); //! Returns simple step value that is used in 2D-computations //! = 1.e-5 Standard_EXPORT static Standard_Real MinStepIn2d(); //! Returns TRUE if the shape does not contain //! geometry information (e.g. empty compound) Standard_EXPORT static Standard_Boolean IsEmptyShape (const TopoDS_Shape& aS); //! Get the edge from the face that is the same as //! the edge Standard_EXPORT static void OrientEdgeOnFace (const TopoDS_Edge& aE, const TopoDS_Face& aF, TopoDS_Edge& aER); //! Computes arbitrary point inside the face .
//! - 2D representation of //! on the surface of
//! Returns 0 in case of success. Standard_EXPORT static Standard_Integer PointInFace (const TopoDS_Face& theF, gp_Pnt& theP, gp_Pnt2d& theP2D, const Handle(IntTools_Context)& theContext); //! Computes a point inside the face //! using starting point taken by the parameter //! from the 2d curve of the edge on the face //! in the direction perpendicular to the tangent vector //! of the 2d curve of the edge.
//! The point will be distanced on from the 2d curve. //! - 2D representation of //! on the surface of
//! Returns 0 in case of success. Standard_EXPORT static Standard_Integer PointInFace (const TopoDS_Face& theF, const TopoDS_Edge& theE, const Standard_Real theT, const Standard_Real theDt2D, gp_Pnt& theP, gp_Pnt2d& theP2D, const Handle(IntTools_Context)& theContext); //! Computes a point inside the face //! using the line so that 2D point //! , 2D representation of //! on the surface of , lies on that line.
//! Returns 0 in case of success. Standard_EXPORT static Standard_Integer PointInFace (const TopoDS_Face& theF, const Handle(Geom2d_Curve)& theL, gp_Pnt& theP, gp_Pnt2d& theP2D, const Handle(IntTools_Context)& theContext, const Standard_Real theDt2D = 0.0); protected: private: }; #endif // _BOPTools_AlgoTools3D_HeaderFile