| c827ea3a |
1 | // Created on: 2014-10-15 |
| 2 | // Created by: Denis Bogolepov |
| 3 | // Copyright (c) 2014 OPEN CASCADE SAS |
| 4 | // |
| 5 | // This file is part of Open CASCADE Technology software library. |
| 6 | // |
| 7 | // This library is free software; you can redistribute it and/or modify it under |
| 8 | // the terms of the GNU Lesser General Public License version 2.1 as published |
| 9 | // by the Free Software Foundation, with special exception defined in the file |
| 10 | // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT |
| 11 | // distribution for complete text of the license and disclaimer of any warranty. |
| 12 | // |
| 13 | // Alternatively, this file may be used under the terms of Open CASCADE |
| 14 | // commercial license or contractual agreement. |
| 15 | |
| 16 | #include <OpenGl_Disk.hxx> |
| 17 | |
| 18 | // ======================================================================= |
| 19 | // function : OpenGl_Disk |
| 20 | // purpose : |
| 21 | // ======================================================================= |
| 22 | OpenGl_Disk::OpenGl_Disk() |
| 23 | : myInnerRadius (1.0f), |
| 24 | myOuterRadius (1.0f) |
| 25 | { |
| 26 | // |
| 27 | } |
| 28 | |
| 29 | // ======================================================================= |
| 30 | // function : Init |
| 31 | // purpose : |
| 32 | // ======================================================================= |
| 33 | Standard_Boolean OpenGl_Disk::Init (const Standard_ShortReal theInnerRadius, |
| 34 | const Standard_ShortReal theOuterRadius, |
| 35 | const Standard_Integer theNbSlices, |
| 36 | const Standard_Integer theNbStacks) |
| 37 | { |
| 38 | myInnerRadius = theInnerRadius; |
| 39 | myOuterRadius = theOuterRadius; |
| 40 | return OpenGl_Quadric::init (theNbSlices, theNbStacks); |
| 41 | } |
| 42 | |
| 43 | // ======================================================================= |
| 44 | // function : evalVertex |
| 45 | // purpose : |
| 46 | // ======================================================================= |
| 47 | OpenGl_Vec3 OpenGl_Disk::evalVertex (const Standard_ShortReal theU, |
| 48 | const Standard_ShortReal theV) const |
| 49 | { |
| 50 | const Standard_ShortReal aU = static_cast<Standard_ShortReal> (theU * M_PI * 2.0); |
| 51 | const Standard_ShortReal aRadius = myInnerRadius + (myOuterRadius - myInnerRadius) * theV; |
| 52 | return OpenGl_Vec3 (cosf (aU) * aRadius, sinf (aU) * aRadius, 0.0f); |
| 53 | } |
| 54 | |
| 55 | // ======================================================================= |
| 56 | // function : evalNormal |
| 57 | // purpose : |
| 58 | // ======================================================================= |
| 59 | OpenGl_Vec3 OpenGl_Disk::evalNormal (const Standard_ShortReal /*theU*/, |
| 60 | const Standard_ShortReal /*theV*/) const |
| 61 | { |
| 62 | return OpenGl_Vec3 (0.0f, 0.0f, -1.0f); |
| 63 | } |
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