include/opencascade/Intf.hxx

0001 // Created on: 1991-05-23
0002 // Created by: Didier PIFFAULT
0003 // Copyright (c) 1991-1999 Matra Datavision
0004 // Copyright (c) 1999-2014 OPEN CASCADE SAS
0005 //
0006 // This file is part of Open CASCADE Technology software library.
0007 //
0008 // This library is free software; you can redistribute it and/or modify it under
0009 // the terms of the GNU Lesser General Public License version 2.1 as published
0010 // by the Free Software Foundation, with special exception defined in the file
0011 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
0012 // distribution for complete text of the license and disclaimer of any warranty.
0013 //
0014 // Alternatively, this file may be used under the terms of Open CASCADE
0015 // commercial license or contractual agreement.
0016
0017 #ifndef _Intf_HeaderFile
0018 #define _Intf_HeaderFile
0019
0020 #include <Standard.hxx>
0021 #include <Standard_DefineAlloc.hxx>
0022 #include <Standard_Handle.hxx>
0023
0024 #include <Standard_Real.hxx>
0025 #include <Standard_Boolean.hxx>
0026 class gp_Pnt;
0027 class gp_XYZ;
0028
0029
0030 //! Interference computation  between polygons, lines  and
0031 //! polyhedra with only  triangular  facets. These objects
0032 //! are polygonal  representations of complex   curves and
0033 //! triangulated representations of complex surfaces.
0034 class Intf
0035 {
0036 public:
0037
0038   DEFINE_STANDARD_ALLOC
0039
0040
0041   //! Computes   the  interference between   two polygons in  2d.
0042   //! Result : points of intersections and zones of tangence.
0043   //! Computes the interference  between a polygon or  a straight
0044   //! line and a polyhedron.   Points of intersection  and zones
0045   //! of tangence.
0046   //! Give the plane equation of the triangle <P1> <P2> <P3>.
0047   Standard_EXPORT static void PlaneEquation (const gp_Pnt& P1, const gp_Pnt& P2, const gp_Pnt& P3, gp_XYZ& NormalVector, Standard_Real& PolarDistance);
0048
0049   //! Compute if the triangle <P1> <P2> <P3> contain <ThePnt>.
0050   Standard_EXPORT static Standard_Boolean Contain (const gp_Pnt& P1, const gp_Pnt& P2, const gp_Pnt& P3, const gp_Pnt& ThePnt);
0051
0052 };
0053
0054 #endif // _Intf_HeaderFile