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1 | // Created on: 2015-06-18 |
2 | // Created by: Ilya SEVRIKOV |
3 | // Copyright (c) 2015 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 | #ifndef OpenGl_TextBuilder_Header |
17 | #define OpenGl_TextBuilder_Header |
18 | |
19 | #include <Font_TextFormatter.hxx> |
20 | |
21 | #include <OpenGl_Context.hxx> |
22 | #include <OpenGl_Font.hxx> |
23 | #include <OpenGl_VertexBuffer.hxx> |
24 | #include <OpenGl_VertexBufferEditor.hxx> |
25 | #include <OpenGl_Vec.hxx> |
26 | |
27 | #include <NCollection_Vector.hxx> |
28 | #include <NCollection_Handle.hxx> |
29 | |
30 | |
31 | //! This class generates primitive array required for rendering textured text using OpenGl_Font instance. |
32 | class OpenGl_TextBuilder |
33 | { |
34 | public: |
35 | |
36 | //! Creates empty object. |
37 | OpenGl_TextBuilder(); |
38 | |
39 | //! Creates texture quads for the given text. |
40 | Standard_EXPORT void Perform (const Font_TextFormatter& theFormatter, |
41 | const Handle(OpenGl_Context)& theContext, |
42 | OpenGl_Font& theFont, |
43 | NCollection_Vector<GLuint>& theTextures, |
44 | NCollection_Vector<Handle(OpenGl_VertexBuffer)>& theVertsPerTexture, |
45 | NCollection_Vector<Handle(OpenGl_VertexBuffer)>& theTCrdsPerTexture); |
46 | |
47 | protected: //! @name class auxillary methods |
48 | |
49 | Standard_EXPORT void createGlyphs (const Font_TextFormatter& theFormatter, |
50 | const Handle(OpenGl_Context)& theCtx, |
51 | OpenGl_Font& theFont, |
52 | NCollection_Vector<GLuint>& theTextures, |
53 | NCollection_Vector< NCollection_Handle < NCollection_Vector <OpenGl_Vec2> > >& theVertsPerTexture, |
54 | NCollection_Vector< NCollection_Handle < NCollection_Vector <OpenGl_Vec2> > >& theTCrdsPerTexture); |
55 | |
56 | protected: //! @name class auxillary fields |
57 | |
58 | NCollection_Vector<OpenGl_Font::Tile> myTileRects; |
59 | OpenGl_VertexBufferEditor<OpenGl_Vec2> myVboEditor; |
60 | }; |
61 | |
62 | #endif // OpenGl_TextBuilder_Header |