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1 | // Created on: 2016-02-04 |
| 2 | // Created by: Anastasia BORISOVA |
| 3 | // Copyright (c) 2016 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 | |
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16 | #ifndef _Prs3d_ToolQuadric_HeaderFile |
| 17 | #define _Prs3d_ToolQuadric_HeaderFile |
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18 | |
| 19 | #include <gp_Ax1.hxx> |
| 20 | #include <Graphic3d_ArrayOfPrimitives.hxx> |
| 21 | #include <Graphic3d_ArrayOfTriangles.hxx> |
| 22 | #include <Poly_Triangulation.hxx> |
| 23 | #include <Prs3d_Root.hxx> |
| 24 | #include <Prs3d_Drawer.hxx> |
| 25 | #include <SelectMgr_Selection.hxx> |
| 26 | #include <Standard.hxx> |
| 27 | |
| 28 | //! Base class to build 3D surfaces presentation of quadric surfaces. |
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29 | class Prs3d_ToolQuadric |
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30 | { |
| 31 | public: |
| 32 | |
| 33 | DEFINE_STANDARD_ALLOC |
| 34 | |
| 35 | //! Generate primitives for 3D quadric surface and fill the given array. Optional transformation is applied. |
| 36 | Standard_EXPORT void FillArray (Handle(Graphic3d_ArrayOfTriangles)& theArray, const gp_Trsf& theTrsf); |
| 37 | |
| 38 | //! Generate primitives for 3D quadric surface presentation and fill the given array and poly triangulation structure. Optional transformation is applied. |
| 39 | Standard_EXPORT void FillArray (Handle(Graphic3d_ArrayOfTriangles)& theArray, Handle(Poly_Triangulation)& theTriangulation, const gp_Trsf& theTrsf); |
| 40 | |
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41 | //! Number of triangles for presentation with the given params. |
| 42 | static Standard_Integer TrianglesNb (const Standard_Integer theSlicesNb, |
| 43 | const Standard_Integer theStacksNb) |
| 44 | { |
| 45 | return theSlicesNb * theStacksNb * 2; |
| 46 | } |
| 47 | |
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48 | protected: |
| 49 | |
| 50 | //! Method implements an algorithm to generate arrays of vertices and normals for 3D surface. |
| 51 | Standard_EXPORT void fillArrays (const gp_Trsf& theTrsf, TColgp_Array1OfPnt& theArray, NCollection_Array1<gp_Dir>& theNormals); |
| 52 | |
| 53 | //! Number of triangles in generated presentation. |
| 54 | Standard_Integer TrianglesNb() const |
| 55 | { |
| 56 | return mySlicesNb * myStacksNb * 2; |
| 57 | } |
| 58 | |
| 59 | //! Redefine this method to generate vertex at given parameters. |
| 60 | virtual gp_Pnt Vertex (const Standard_Real theU, const Standard_Real theV) = 0; |
| 61 | |
| 62 | //! Redefine this method to generate normal at given parameters. |
| 63 | virtual gp_Dir Normal (const Standard_Real theU, const Standard_Real theV) = 0; |
| 64 | |
| 65 | protected: |
| 66 | |
| 67 | Standard_Integer mySlicesNb; |
| 68 | Standard_Integer myStacksNb; |
| 69 | }; |
| 70 | |
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71 | #endif // _Prs3d_ToolQuadric_HeaderFile |
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