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1 | // Created on: 1995-07-27 |
2 | // Created by: Modelistation |
3 | // Copyright (c) 1995-1999 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 | |
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17 | #include <Prs3d_ToolCylinder.hxx> |
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18 | |
19 | #include <Graphic3d_ArrayOfTriangles.hxx> |
20 | #include <Poly_Array1OfTriangle.hxx> |
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21 | #include <Prs3d_ToolQuadric.hxx> |
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22 | |
23 | //======================================================================= |
24 | //function : Constructor |
25 | //purpose : |
26 | //======================================================================= |
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27 | Prs3d_ToolCylinder::Prs3d_ToolCylinder (const Standard_Real theBottomRad, |
28 | const Standard_Real theTopRad, |
29 | const Standard_Real theHeight, |
30 | const Standard_Integer theNbSlices, |
31 | const Standard_Integer theNbStacks) |
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32 | : myBottomRadius (theBottomRad), |
33 | myTopRadius (theTopRad), |
34 | myHeight (theHeight) |
35 | { |
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36 | myStacksNb = theNbStacks; |
37 | mySlicesNb = theNbSlices; |
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38 | } |
39 | |
40 | //======================================================================= |
41 | //function : Vertex |
42 | //purpose : |
43 | //======================================================================= |
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44 | gp_Pnt Prs3d_ToolCylinder::Vertex (const Standard_Real theU, const Standard_Real theV) |
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45 | { |
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46 | const Standard_Real aU = theU * M_PI * 2.0; |
47 | const Standard_Real aRadius = myBottomRadius + (myTopRadius - myBottomRadius) * theV; |
48 | return gp_Pnt (Cos (aU) * aRadius, |
49 | Sin (aU) * aRadius, |
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50 | theV * myHeight); |
51 | } |
52 | |
53 | //======================================================================= |
54 | //function : Add |
55 | //purpose : |
56 | //======================================================================= |
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57 | gp_Dir Prs3d_ToolCylinder::Normal (const Standard_Real theU, const Standard_Real /*theV*/) |
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58 | { |
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59 | const Standard_Real aU = theU * M_PI * 2.0; |
60 | return gp_Dir (Cos (aU) * myHeight, |
61 | Sin (aU) * myHeight, |
62 | myBottomRadius - myTopRadius); |
63 | } |
64 | |
65 | //======================================================================= |
66 | //function : Perform |
67 | //purpose : |
68 | //======================================================================= |
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69 | Handle(Graphic3d_ArrayOfTriangles) Prs3d_ToolCylinder::Create (const Standard_Real theBottomRad, |
70 | const Standard_Real theTopRad, |
71 | const Standard_Real theHeight, |
72 | const Standard_Integer theNbSlices, |
73 | const Standard_Integer theNbStacks, |
74 | const gp_Trsf& theTrsf) |
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75 | { |
76 | Handle(Graphic3d_ArrayOfTriangles) anArray; |
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77 | Prs3d_ToolCylinder aTool (theBottomRad, theTopRad, theHeight, theNbSlices, theNbStacks); |
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78 | aTool.FillArray (anArray, theTrsf); |
79 | return anArray; |
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80 | } |