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317d68c924
for usage without OpenGL. Split OpenGl_TextFormatter into Font_TextFormatter and OpenGl_TextBuilder. Font_TextFormatter can format a text independetly of OpenGl now. OpenGl_TextBuilder generates primitive array required for rendering text using OpenGl_Font instance.
63 lines
2.8 KiB
C++
63 lines
2.8 KiB
C++
// Created on: 2015-06-18
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// Created by: Ilya SEVRIKOV
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// Copyright (c) 2015 OPEN CASCADE SAS
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//
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// This file is part of Open CASCADE Technology software library.
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//
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// This library is free software; you can redistribute it and/or modify it under
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// the terms of the GNU Lesser General Public License version 2.1 as published
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// by the Free Software Foundation, with special exception defined in the file
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// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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// distribution for complete text of the license and disclaimer of any warranty.
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//
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// Alternatively, this file may be used under the terms of Open CASCADE
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// commercial license or contractual agreement.
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#ifndef OpenGl_TextBuilder_Header
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#define OpenGl_TextBuilder_Header
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#include <Font_TextFormatter.hxx>
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#include <OpenGl_Context.hxx>
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#include <OpenGl_Font.hxx>
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#include <OpenGl_VertexBuffer.hxx>
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#include <OpenGl_VertexBufferEditor.hxx>
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#include <OpenGl_Vec.hxx>
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#include <NCollection_Vector.hxx>
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#include <NCollection_Handle.hxx>
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//! This class generates primitive array required for rendering textured text using OpenGl_Font instance.
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class OpenGl_TextBuilder
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{
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public:
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//! Creates empty object.
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OpenGl_TextBuilder();
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//! Creates texture quads for the given text.
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Standard_EXPORT void Perform (const Font_TextFormatter& theFormatter,
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const Handle(OpenGl_Context)& theContext,
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OpenGl_Font& theFont,
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NCollection_Vector<GLuint>& theTextures,
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NCollection_Vector<Handle(OpenGl_VertexBuffer)>& theVertsPerTexture,
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NCollection_Vector<Handle(OpenGl_VertexBuffer)>& theTCrdsPerTexture);
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protected: //! @name class auxillary methods
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Standard_EXPORT void createGlyphs (const Font_TextFormatter& theFormatter,
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const Handle(OpenGl_Context)& theCtx,
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OpenGl_Font& theFont,
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NCollection_Vector<GLuint>& theTextures,
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NCollection_Vector< NCollection_Handle < NCollection_Vector <OpenGl_Vec2> > >& theVertsPerTexture,
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NCollection_Vector< NCollection_Handle < NCollection_Vector <OpenGl_Vec2> > >& theTCrdsPerTexture);
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protected: //! @name class auxillary fields
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NCollection_Vector<OpenGl_Font::Tile> myTileRects;
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OpenGl_VertexBufferEditor<OpenGl_Vec2> myVboEditor;
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};
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#endif // OpenGl_TextBuilder_Header
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