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...

	OpenGl_Text (const Standard_Utf8Char *theText, const gp_Ax2 &theOrientation, const OpenGl_TextParam &theParams, const bool theHasOwnAnchor=true)
	Creates new text in 3D space. 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 ()

virtual Standard_Boolean	IsFillDrawMode () const
	Return TRUE if primitive type generates shaded triangulation (to be used in filters). More...

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...

Handle< OpenGl_VertexBuffer >	myBndVertsVbo
	VBOs of vertices for bounding box. More...

Font_Rect	myBndBox
	textures' IDs More...

OpenGl_Mat4d	myProjMatrix
	textures' IDs More...

OpenGl_Mat4d	myModelMatrix
	textures' IDs More...

OpenGl_Mat4d	myOrientationMatrix
	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...

gp_Ax2	myOrientation
	Text orientation in 3D space. More...

bool	myHasPlane
	Check if text have orientation in 3D space. More...

bool	myHasAnchorPoint
	Shows if it has own attach point. 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_Context > &theCtx, const OpenGl_AspectText &theTextAspect, const unsigned int theResolution=Graphic3d_RenderingParams::THE_DEFAULT_RESOLUTION) const
	Perform rendering. More...

static TCollection_AsciiString	FontKey (const OpenGl_AspectText &theAspect, const Standard_Integer theHeight, const unsigned int theResolution)
	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 unsigned int theResolution, 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, const unsigned int theResolution, Standard_ShortReal &theWidth, Standard_ShortReal &theAscent, Standard_ShortReal &theDescent)
	Compute text width. More...

virtual	~OpenGl_Text ()
	Destructor. More...

void	releaseVbos (OpenGl_Context *theCtx)
	Release cached VBO resources. 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() [1/3]

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

Main constructor.

◆ OpenGl_Text() [2/3]

OpenGl_Text::OpenGl_Text	(	const Standard_Utf8Char *	theText,
		const gp_Ax2 &	theOrientation,
		const OpenGl_TextParam &	theParams,
		const bool	theHasOwnAnchor = `true`
	)

Creates new text in 3D space.

◆ OpenGl_Text() [3/3]

OpenGl_Text::OpenGl_Text ( )

Empty constructor.

◆ ~OpenGl_Text()

virtual OpenGl_Text::~OpenGl_Text ( )

protectedvirtual

Destructor.

Member Function Documentation

◆ FindFont()

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

static

Find shared resource for specified font or initialize new one.

◆ FontKey()

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

static

Create key for shared resource.

◆ Init() [1/3]

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

Setup new string and position.

◆ Init() [2/3]

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.

◆ Init() [3/3]

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.

◆ Release()

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.

Reimplemented in OpenGl_FrameStatsPrs.

◆ releaseVbos()

void OpenGl_Text::releaseVbos ( OpenGl_Context * theCtx )

protected

Release cached VBO resources.

◆ Render() [1/2]

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

virtual

Implements OpenGl_Element.

Reimplemented in OpenGl_FrameStatsPrs.

◆ Render() [2/2]

void OpenGl_Text::Render	(	const Handle< OpenGl_Context > &	theCtx,
		const OpenGl_AspectText &	theTextAspect,
		const unsigned int	theResolution = `Graphic3d_RenderingParams::THE_DEFAULT_RESOLUTION`
	)		const

Perform rendering.

◆ SetFontSize()

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

Setup new font size.

◆ SetPosition()

void OpenGl_Text::SetPosition ( const OpenGl_Vec3 & thePoint )

Setup new position.

◆ StringSize()

static void OpenGl_Text::StringSize	(	const Handle< OpenGl_Context > &	theCtx,
		const NCollection_String &	theText,
		const OpenGl_AspectText &	theTextAspect,
		const OpenGl_TextParam &	theParams,
		const unsigned int	theResolution,
		Standard_ShortReal &	theWidth,
		Standard_ShortReal &	theAscent,
		Standard_ShortReal &	theDescent
	)

static

Compute text width.

Field Documentation

◆ myBndBox

Font_Rect OpenGl_Text::myBndBox

mutableprotected

textures' IDs

◆ myBndVertsVbo

Handle< OpenGl_VertexBuffer > OpenGl_Text::myBndVertsVbo

mutableprotected

VBOs of vertices for bounding box.

◆ myExportHeight

GLdouble OpenGl_Text::myExportHeight

mutableprotected

textures' IDs

◆ myFont

Handle< OpenGl_Font > OpenGl_Text::myFont

mutableprotected

textures' IDs

◆ myHasAnchorPoint

bool OpenGl_Text::myHasAnchorPoint

protected

Shows if it has own attach point.

◆ myHasPlane

bool OpenGl_Text::myHasPlane

protected

Check if text have orientation in 3D space.

◆ myIs2d

bool OpenGl_Text::myIs2d

protected

textures' IDs

◆ myModelMatrix

OpenGl_Mat4d OpenGl_Text::myModelMatrix

mutableprotected

textures' IDs

◆ myOrientation

gp_Ax2 OpenGl_Text::myOrientation

protected

Text orientation in 3D space.

◆ myOrientationMatrix

OpenGl_Mat4d OpenGl_Text::myOrientationMatrix

mutableprotected

textures' IDs

◆ myParams

OpenGl_TextParam OpenGl_Text::myParams

protected

textures' IDs

◆ myPoint

OpenGl_Vec3 OpenGl_Text::myPoint

protected

textures' IDs

◆ myProjMatrix

OpenGl_Mat4d OpenGl_Text::myProjMatrix

mutableprotected

textures' IDs

◆ myScaleHeight

GLdouble OpenGl_Text::myScaleHeight

mutableprotected

textures' IDs

◆ myString

NCollection_String OpenGl_Text::myString

protected

textures' IDs

◆ myTCrdsVbo

NCollection_Vector<Handle< OpenGl_VertexBuffer > > OpenGl_Text::myTCrdsVbo

mutableprotected

VBOs of texture coordinates.

◆ myTextures

NCollection_Vector<GLuint> OpenGl_Text::myTextures

mutableprotected

textures' IDs

◆ myVertsVbo

NCollection_Vector<Handle< OpenGl_VertexBuffer > > OpenGl_Text::myVertsVbo

mutableprotected

VBOs of vertices.

◆ myWinX

GLdouble OpenGl_Text::myWinX

mutableprotected

textures' IDs

◆ myWinY

GLdouble OpenGl_Text::myWinY

mutableprotected

textures' IDs

◆ myWinZ

GLdouble OpenGl_Text::myWinZ

mutableprotected

textures' IDs

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

OpenGl_Text.hxx

Public Member Functions

methods for compatibility with layers

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ OpenGl_Text() [1/3]

◆ OpenGl_Text() [2/3]

◆ OpenGl_Text() [3/3]

◆ ~OpenGl_Text()

Member Function Documentation

◆ FindFont()

◆ FontKey()

◆ Init() [1/3]

◆ Init() [2/3]

◆ Init() [3/3]

◆ Release()

◆ releaseVbos()

◆ Render() [1/2]

◆ Render() [2/2]

◆ SetFontSize()

◆ SetPosition()

◆ StringSize()

Field Documentation

◆ myBndBox

◆ myBndVertsVbo

◆ myExportHeight

◆ myFont

◆ myHasAnchorPoint

◆ myHasPlane

◆ myIs2d

◆ myModelMatrix

◆ myOrientation

◆ myOrientationMatrix

◆ myParams

◆ myPoint

◆ myProjMatrix

◆ myScaleHeight

◆ myString

◆ myTCrdsVbo

◆ myTextures

◆ myVertsVbo

◆ myWinX

◆ myWinY

◆ myWinZ