1 // Created on: 1993-12-06 2 // Created by: Jacques GOUSSARD 3 // Copyright (c) 1993-1999 Matra Datavision 4 // Copyright (c) 1999-2014 OPEN CASCADE SAS 5 // 6 // This file is part of Open CASCADE Technology software library. 7 // 8 // This library is free software; you can redistribute it and/or modify it under 9 // the terms of the GNU Lesser General Public License version 2.1 as published 10 // by the Free Software Foundation, with special exception defined in the file 11 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT 12 // distribution for complete text of the license and disclaimer of any warranty. 13 // 14 // Alternatively, this file may be used under the terms of Open CASCADE 15 // commercial license or contractual agreement. 16 17 #ifndef _BRepBlend_BlendTool_HeaderFile 18 #define _BRepBlend_BlendTool_HeaderFile 19 20 #include <Standard.hxx> 21 #include <Standard_DefineAlloc.hxx> 22 #include <Standard_Handle.hxx> 23 24 #include <Standard_Boolean.hxx> 25 #include <Standard_Real.hxx> 26 #include <Standard_Integer.hxx> 27 class gp_Pnt2d; 28 class Adaptor3d_HSurface; 29 class Adaptor2d_HCurve2d; 30 class Adaptor3d_HVertex; 31 32 33 34 class BRepBlend_BlendTool 35 { 36 public: 37 38 DEFINE_STANDARD_ALLOC 39 40 41 //! Projects the point P on the arc C. 42 //! If the methods returns Standard_True, the projection is 43 //! successful, and Paramproj is the parameter on the arc 44 //! of the projected point, Dist is the distance between 45 //! P and the curve.. 46 //! If the method returns Standard_False, Param proj and Dist 47 //! are not significant. 48 Standard_EXPORT static Standard_Boolean Project (const gp_Pnt2d& P, const Handle(Adaptor3d_HSurface)& S, const Handle(Adaptor2d_HCurve2d)& C, Standard_Real& Paramproj, Standard_Real& Dist); 49 50 Standard_EXPORT static Standard_Boolean Inters (const gp_Pnt2d& P1, const gp_Pnt2d& P2, const Handle(Adaptor3d_HSurface)& S, const Handle(Adaptor2d_HCurve2d)& C, Standard_Real& Param, Standard_Real& Dist); 51 52 //! Returns the parameter of the vertex V on the edge A. 53 static Standard_Real Parameter (const Handle(Adaptor3d_HVertex)& V, const Handle(Adaptor2d_HCurve2d)& A); 54 55 //! Returns the parametric tolerance on the arc A 56 //! used to consider that the vertex and another point meet, 57 //! i-e if Abs(Parameter(Vertex)-Parameter(OtherPnt))<= 58 //! Tolerance, the points are "merged". 59 static Standard_Real Tolerance (const Handle(Adaptor3d_HVertex)& V, const Handle(Adaptor2d_HCurve2d)& A); 60 61 static Standard_Boolean SingularOnUMin (const Handle(Adaptor3d_HSurface)& S); 62 63 static Standard_Boolean SingularOnUMax (const Handle(Adaptor3d_HSurface)& S); 64 65 static Standard_Boolean SingularOnVMin (const Handle(Adaptor3d_HSurface)& S); 66 67 static Standard_Boolean SingularOnVMax (const Handle(Adaptor3d_HSurface)& S); 68 69 Standard_EXPORT static Standard_Integer NbSamplesU (const Handle(Adaptor3d_HSurface)& S, const Standard_Real u1, const Standard_Real u2); 70 71 Standard_EXPORT static Standard_Integer NbSamplesV (const Handle(Adaptor3d_HSurface)& S, const Standard_Real v1, const Standard_Real v2); 72 73 //! Returns the parametric limits on the arc C. 74 //! These limits must be finite : they are either 75 //! the real limits of the arc, for a finite arc, 76 //! or a bounding box for an infinite arc. 77 Standard_EXPORT static void Bounds (const Handle(Adaptor2d_HCurve2d)& C, Standard_Real& Ufirst, Standard_Real& Ulast); 78 79 static Handle(Adaptor2d_HCurve2d) CurveOnSurf (const Handle(Adaptor2d_HCurve2d)& C, const Handle(Adaptor3d_HSurface)& S); 80 81 82 83 84 protected: 85 86 87 88 89 90 private: 91 92 93 94 95 96 }; 97 98 99 #include <BRepBlend_BlendTool.lxx> 100 101 102 103 104 105 #endif // _BRepBlend_BlendTool_HeaderFile 106