Text rendering. More...

#include <OpenGl_Text.hxx>

Inheritance diagram for OpenGl_Text:

Public Member Functions
	OpenGl_Text (const Standard_Utf8Char *theText, const OpenGl_Vec3 &thePoint, const OpenGl_TextParam &theParams)
	Main constructor. More...

void	Init (const Handle< OpenGl_Context > &theCtx, const Standard_Utf8Char *theText, const OpenGl_Vec3 &thePoint)
	Setup new string and position. More...

void	Init (const Handle< OpenGl_Context > &theCtx, const Standard_Utf8Char *theText, const OpenGl_Vec3 &thePoint, const OpenGl_TextParam &theParams)
	Setup new string and parameters. More...

void	SetPosition (const OpenGl_Vec3 &thePoint)
	Setup new position. More...

void	SetFontSize (const Handle< OpenGl_Context > &theContext, const Standard_Integer theFontSize)
	Setup new font size. More...

virtual void	Render (const Handle< OpenGl_Workspace > &theWorkspace) const

virtual void	Release (OpenGl_Context *theContext)
	Release GPU resources. Pointer to the context is used because this method might be called when the context is already being destroyed and usage of a handle would be unsafe. More...

Public Member Functions inherited from OpenGl_Element
	OpenGl_Element ()

Standard_Boolean	RenderFiltered (const Handle< OpenGl_Workspace > &theWorkspace, const Handle< OpenGl_RenderFilter > &theFilter) const
	Render element if it passes the filtering procedure. This method should be used for elements which can be used in scope of rendering algorithms. E.g. elements of groups during recursive rendering. If render filter is null, pure rendering is performed. More...

methods for compatibility with layers
Handle< OpenGl_Font >	myFont
	textures' IDs More...

NCollection_Vector< GLuint >	myTextures
	textures' IDs More...

NCollection_Vector< Handle < OpenGl_VertexBuffer > >	myVertsVbo
	VBOs of vertices. More...

NCollection_Vector< Handle < OpenGl_VertexBuffer > >	myTCrdsVbo
	VBOs of texture coordinates. More...

Font_FTFont::Rect	myBndBox
	textures' IDs More...

OpenGl_Mat4d	myProjMatrix
	textures' IDs More...

OpenGl_Mat4d	myModelMatrix
	textures' IDs More...

GLint	myViewport [4]
	textures' IDs More...

GLdouble	myWinX
	textures' IDs More...

GLdouble	myWinY
	textures' IDs More...

GLdouble	myWinZ
	textures' IDs More...

GLdouble	myScaleHeight
	textures' IDs More...

GLdouble	myExportHeight
	textures' IDs More...

OpenGl_TextParam	myParams
	textures' IDs More...

NCollection_String	myString
	textures' IDs More...

OpenGl_Vec3	myPoint
	textures' IDs More...

bool	myIs2d
	textures' IDs More...

	OpenGl_Text ()
	Empty constructor. More...

void	Init (const Handle< OpenGl_Context > &theCtx, const TCollection_ExtendedString &theText, const OpenGl_Vec2 &thePoint, const OpenGl_TextParam &theParams)
	Setup new string and parameters. More...

void	Render (const Handle< OpenGl_PrinterContext > &thePrintCtx, const Handle< OpenGl_Context > &theCtx, const OpenGl_AspectText &theTextAspect) const
	Perform rendering. More...

static TCollection_AsciiString	FontKey (const OpenGl_AspectText &theAspect, const Standard_Integer theHeight)
	Create key for shared resource. More...

static Handle< OpenGl_Font >	FindFont (const Handle< OpenGl_Context > &theCtx, const OpenGl_AspectText &theAspect, const Standard_Integer theHeight, const TCollection_AsciiString theKey)
	Find shared resource for specified font or initialize new one. More...

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)
	Compute text width. More...

virtual	~OpenGl_Text ()
	Destructor. More...

Additional Inherited Members
Static Public Member Functions inherited from OpenGl_Element
template<typename theResource_t >
static void	Destroy (OpenGl_Context theContext, theResource_t &theElement)
	Pointer to the context is used because this method might be called when the context is already being destroyed and usage of a handle would be unsafe. More...

Protected Member Functions inherited from OpenGl_Element
virtual	~OpenGl_Element ()

Detailed Description

Text rendering.

Constructor & Destructor Documentation

OpenGl_Text::OpenGl_Text	(	const Standard_Utf8Char *	theText,
		const OpenGl_Vec3 &	thePoint,
		const OpenGl_TextParam &	theParams
	)

Main constructor.

OpenGl_Text::OpenGl_Text ( )

Empty constructor.

virtual OpenGl_Text::~OpenGl_Text ( )

protectedvirtual

Destructor.

Member Function Documentation

static Handle< OpenGl_Font > OpenGl_Text::FindFont	(	const Handle< OpenGl_Context > &	theCtx,
		const OpenGl_AspectText &	theAspect,
		const Standard_Integer	theHeight,
		const TCollection_AsciiString	theKey
	)

static

Find shared resource for specified font or initialize new one.

static TCollection_AsciiString OpenGl_Text::FontKey	(	const OpenGl_AspectText &	theAspect,
		const Standard_Integer	theHeight
	)

static

Create key for shared resource.

void OpenGl_Text::Init	(	const Handle< OpenGl_Context > &	theCtx,
		const Standard_Utf8Char *	theText,
		const OpenGl_Vec3 &	thePoint
	)

Setup new string and position.

void OpenGl_Text::Init	(	const Handle< OpenGl_Context > &	theCtx,
		const Standard_Utf8Char *	theText,
		const OpenGl_Vec3 &	thePoint,
		const OpenGl_TextParam &	theParams
	)

Setup new string and parameters.

void OpenGl_Text::Init	(	const Handle< OpenGl_Context > &	theCtx,
		const TCollection_ExtendedString &	theText,
		const OpenGl_Vec2 &	thePoint,
		const OpenGl_TextParam &	theParams
	)

Setup new string and parameters.

virtual void OpenGl_Text::Release ( OpenGl_Context * theContext )

virtual

Release GPU resources. Pointer to the context is used because this method might be called when the context is already being destroyed and usage of a handle would be unsafe.

Implements OpenGl_Element.

virtual void OpenGl_Text::Render ( const Handle< OpenGl_Workspace > & theWorkspace ) const

virtual

Implements OpenGl_Element.

void OpenGl_Text::Render	(	const Handle< OpenGl_PrinterContext > &	thePrintCtx,
		const Handle< OpenGl_Context > &	theCtx,
		const OpenGl_AspectText &	theTextAspect
	)		const

Perform rendering.

void OpenGl_Text::SetFontSize	(	const Handle< OpenGl_Context > &	theContext,
		const Standard_Integer	theFontSize
	)

Setup new font size.

void OpenGl_Text::SetPosition ( const OpenGl_Vec3 & thePoint )

Setup new position.

static void OpenGl_Text::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
	)

static

Compute text width.

Field Documentation

Font_FTFont::Rect OpenGl_Text::myBndBox

mutableprotected

textures' IDs

GLdouble OpenGl_Text::myExportHeight

mutableprotected

textures' IDs

Handle< OpenGl_Font > OpenGl_Text::myFont

mutableprotected

textures' IDs

bool OpenGl_Text::myIs2d

protected

textures' IDs

OpenGl_Mat4d OpenGl_Text::myModelMatrix

mutableprotected

textures' IDs

OpenGl_TextParam OpenGl_Text::myParams

protected

textures' IDs

OpenGl_Vec3 OpenGl_Text::myPoint

protected

textures' IDs

OpenGl_Mat4d OpenGl_Text::myProjMatrix

mutableprotected

textures' IDs

GLdouble OpenGl_Text::myScaleHeight

mutableprotected

textures' IDs

NCollection_String OpenGl_Text::myString

protected

textures' IDs

NCollection_Vector<Handle< OpenGl_VertexBuffer > > OpenGl_Text::myTCrdsVbo

mutableprotected

VBOs of texture coordinates.

NCollection_Vector<GLuint> OpenGl_Text::myTextures

mutableprotected

textures' IDs

NCollection_Vector<Handle< OpenGl_VertexBuffer > > OpenGl_Text::myVertsVbo

mutableprotected

VBOs of vertices.

GLint OpenGl_Text::myViewport[4]

mutableprotected

textures' IDs

GLdouble OpenGl_Text::myWinX

mutableprotected

textures' IDs

GLdouble OpenGl_Text::myWinY

mutableprotected

textures' IDs

GLdouble OpenGl_Text::myWinZ

mutableprotected

textures' IDs

The documentation for this class was generated from the following file:

OpenGl_Text.hxx

OpenGl_Text Class Reference

Public Member Functions

methods for compatibility with layers

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Field Documentation