/usr/include/oce/OpenGl_Text.hxx is in liboce-visualization-dev 0.15-5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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// Created by: Sergey ZERCHANINOV
// Copyright (c) 2011-2013 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and / or modify it
// under the terms of the GNU Lesser General Public version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.
#ifndef OpenGl_Text_Header
#define OpenGl_Text_Header
#include <OpenGl_Element.hxx>
#include <OpenGl_AspectText.hxx>
#include <OpenGl_TextParam.hxx>
#include <OpenGl_TextFormatter.hxx>
#include <TCollection_ExtendedString.hxx>
#include <Graphic3d_Vertex.hxx>
#include <Graphic3d_HorizontalTextAlignment.hxx>
#include <Graphic3d_VerticalTextAlignment.hxx>
class Handle(OpenGl_PrinterContext);
//! Text rendering
class OpenGl_Text : public OpenGl_Element
{
public:
//! Main constructor
Standard_EXPORT OpenGl_Text (const TCollection_ExtendedString& theText,
const OpenGl_Vec3& thePoint,
const OpenGl_TextParam& theParams);
//! Setup new string and position
Standard_EXPORT void Init (const Handle(OpenGl_Context)& theCtx,
const Standard_Utf8Char* theText,
const OpenGl_Vec3& thePoint);
//! Setup new string and parameters
Standard_EXPORT void Init (const Handle(OpenGl_Context)& theCtx,
const Standard_Utf8Char* theText,
const OpenGl_Vec3& thePoint,
const OpenGl_TextParam& theParams);
//! Setup new position
Standard_EXPORT void SetPosition (const OpenGl_Vec3& thePoint);
//! Setup new font size
Standard_EXPORT void SetFontSize (const Handle(OpenGl_Context)& theContext,
const Standard_Integer theFontSize);
Standard_EXPORT virtual void Render (const Handle(OpenGl_Workspace)& theWorkspace) const;
Standard_EXPORT virtual void Release (const Handle(OpenGl_Context)& theContext);
public: //! @name methods for compatibility with layers
//! Empty constructor
OpenGl_Text();
//! Create key for shared resource
static TCollection_AsciiString FontKey (const OpenGl_AspectText& theAspect,
const Standard_Integer theHeight);
//! Find shared resource for specified font or initialize new one
static Handle(OpenGl_Font) FindFont (const Handle(OpenGl_Context)& theCtx,
const OpenGl_AspectText& theAspect,
const Standard_Integer theHeight,
const TCollection_AsciiString theKey);
//! Compute text width
static void StringSize (const Handle(OpenGl_Context)& theCtx,
const NCollection_String& theText,
const OpenGl_AspectText& theTextAspect,
const OpenGl_TextParam& theParams,
Standard_ShortReal& theWidth,
Standard_ShortReal& theAscent,
Standard_ShortReal& theDescent);
//! Setup new string and parameters
void Init (const Handle(OpenGl_Context)& theCtx,
const TCollection_ExtendedString& theText,
const OpenGl_Vec2& thePoint,
const OpenGl_TextParam& theParams);
//! Perform rendering
void Render (const Handle(OpenGl_PrinterContext)& thePrintCtx,
const Handle(OpenGl_Context)& theCtx,
const OpenGl_AspectText& theTextAspect) const;
protected:
//! Destructor
Standard_EXPORT virtual ~OpenGl_Text();
friend class OpenGl_Trihedron;
friend class OpenGl_GraduatedTrihedron;
private:
//! Release cached VBO resources
void releaseVbos (const Handle(OpenGl_Context)& theCtx);
//! Setup matrix.
void setupMatrix (const Handle(OpenGl_PrinterContext)& thePrintCtx,
const Handle(OpenGl_Context)& theCtx,
const OpenGl_AspectText& theTextAspect,
const OpenGl_Vec3 theDVec) const;
//! Draw arrays of vertices.
void drawText (const Handle(OpenGl_PrinterContext)& thePrintCtx,
const Handle(OpenGl_Context)& theCtx,
const OpenGl_AspectText& theTextAspect) const;
//! Main rendering code
void render (const Handle(OpenGl_PrinterContext)& thePrintCtx,
const Handle(OpenGl_Context)& theCtx,
const OpenGl_AspectText& theTextAspect,
const TEL_COLOUR& theColorText,
const TEL_COLOUR& theColorSubs) const;
protected:
mutable Handle(OpenGl_Font) myFont;
mutable NCollection_Vector<GLuint> myTextures; //!< textures' IDs
mutable NCollection_Vector<Handle(OpenGl_VertexBuffer)> myVertsVbo; //!< VBOs of vertices
mutable NCollection_Vector<Handle(OpenGl_VertexBuffer)> myTCrdsVbo; //!< VBOs of texture coordinates
mutable NCollection_Vector<Handle(OpenGl_Vec2Array)> myVertsArray; //!< arrays of vertices (for compatibility mode)
mutable NCollection_Vector<Handle(OpenGl_Vec2Array)> myTCrdsArray; //!< arrays of vertices (for compatibility mode)
mutable Font_FTFont::Rect myBndBox;
protected:
mutable GLdouble myProjMatrix[16];
mutable GLdouble myModelMatrix[16];
mutable GLint myViewport[4];
mutable GLdouble myWinX;
mutable GLdouble myWinY;
mutable GLdouble myWinZ;
mutable GLdouble myScaleHeight;
mutable GLdouble myExportHeight;
protected:
OpenGl_TextParam myParams;
NCollection_String myString;
OpenGl_Vec3 myPoint;
bool myIs2d;
public:
DEFINE_STANDARD_ALLOC
};
#endif //OpenGl_Text_Header
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