include/opencascade/BRepPrim_Cone.hxx

0001 // Created on: 1992-11-05
0002 // Created by: Remi LEQUETTE
0003 // Copyright (c) 1992-1999 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 _BRepPrim_Cone_HeaderFile
0018 #define _BRepPrim_Cone_HeaderFile
0019
0020 #include <Standard.hxx>
0021 #include <Standard_DefineAlloc.hxx>
0022 #include <Standard_Handle.hxx>
0023
0024 #include <BRepPrim_Revolution.hxx>
0025 class gp_Ax2;
0026 class gp_Pnt;
0027 class TopoDS_Face;
0028
0029
0030 //! Implement the cone primitive.
0031 class BRepPrim_Cone  : public BRepPrim_Revolution
0032 {
0033 public:
0034
0035   DEFINE_STANDARD_ALLOC
0036
0037
0038   //! the STEP definition
0039   //! Angle = semi-angle of the cone
0040   //! Position : the coordinate system
0041   //! Height : height of the cone.
0042   //! Radius : radius of truncated face at z = 0
0043   //!
0044   //! The apex is on z < 0
0045   //!
0046   //! Errors : Height < Resolution
0047   //! Angle < Resolution / Height
0048   //! Angle > PI/2 - Resolution / Height
0049   Standard_EXPORT BRepPrim_Cone(const Standard_Real Angle, const gp_Ax2& Position, const Standard_Real Height, const Standard_Real Radius = 0);
0050
0051   //! infinite cone at origin on Z negative
0052   Standard_EXPORT BRepPrim_Cone(const Standard_Real Angle);
0053
0054   //! infinite cone at Apex on Z negative
0055   Standard_EXPORT BRepPrim_Cone(const Standard_Real Angle, const gp_Pnt& Apex);
0056
0057   //! infinite cone with Axes
0058   Standard_EXPORT BRepPrim_Cone(const Standard_Real Angle, const gp_Ax2& Axes);
0059
0060   //! create a  Cone at origin  on Z axis, of height  H,
0061   //! radius R1 at Z = 0, R2 at  Z = H, X is  the origin
0062   //! of angles.  If R1 or  R2 is 0   there is  an apex.
0063   //! Otherwise, it is a truncated cone.
0064   //!
0065   //! Error  : R1 and R2  < Resolution
0066   //! R1 or R2 negative
0067   //! Abs(R1-R2) < Resolution
0068   //! H < Resolution
0069   //! H negative
0070   Standard_EXPORT BRepPrim_Cone(const Standard_Real R1, const Standard_Real R2, const Standard_Real H);
0071
0072   //! same as above but at a given point
0073   Standard_EXPORT BRepPrim_Cone(const gp_Pnt& Center, const Standard_Real R1, const Standard_Real R2, const Standard_Real H);
0074
0075   //! same as above with given axes system.
0076   Standard_EXPORT BRepPrim_Cone(const gp_Ax2& Axes, const Standard_Real R1, const Standard_Real R2, const Standard_Real H);
0077
0078   //! The surface normal should be directed  towards the
0079   //! outside.
0080   Standard_EXPORT virtual TopoDS_Face MakeEmptyLateralFace() const Standard_OVERRIDE;
0081
0082
0083
0084
0085 protected:
0086
0087
0088
0089
0090
0091 private:
0092
0093
0094   Standard_EXPORT void SetMeridian();
0095
0096   Standard_EXPORT void SetParameters (const Standard_Real R1, const Standard_Real R2, const Standard_Real H);
0097
0098
0099   Standard_Real myHalfAngle;
0100   Standard_Real myRadius;
0101
0102
0103 };
0104
0105
0106
0107
0108
0109
0110
0111 #endif // _BRepPrim_Cone_HeaderFile