GLViewer_TexFont Class Reference

#include <GLViewer_Drawer.h>

Public Member Functions
	GLViewer_TexFont ()
	A default constructor.
	GLViewer_TexFont (QFont *theFont, int theSeparator=2, bool theIsResizeable=false, GLuint theMinMagFilter=GL_LINEAR)
	A constructor.
	~GLViewer_TexFont ()
	A destructor.
bool	generateTexture ()
	Generating font texture.
void	drawString (QString theStr, GLdouble theX=0.0, GLdouble theY=0.0, GLfloat theScale=1.0)
	Drawing string theStr in point with coords theX and theY.
int	getSeparator ()
	Returns separator between letters.
void	setSeparator (int theSeparator)
	Installing separator between letters.
int	getStringWidth (QString theString)
	Returns width of string in pixels.
int	getStringHeight ()
	Returns height of string in pixels.
Static Public Member Functions
static void	clearTextBases ()
	Clears all generated fonts.
Static Public Attributes
static QMap < GLViewer_TexFindId, GLViewer_TexIdStored >	TexFontBase
	Map for strorage generated texture fonts.
static QMap < GLViewer_TexFindId, GLuint >	BitmapFontCache
	Map for strorage generated bitmaps fonts.
Private Member Functions
void	init ()
	Initializes font parameters.
Private Attributes
int	myNbSymbols
	Number of characters in the font texture.
int *	myWidths
	Array of letter width.
int *	myPositions
	Array of letter positions in texture.
QFont	myQFont
	Pointer to base font.
GLuint	myTexFont
	Font texture ID.
int	myTexFontWidth
	Font texture width.
int	myTexFontHeight
	Font texture height.
int	mySeparator
	Separator between letters.
bool	myIsResizeable
	Flag controlling scalability of this texmapped font.
GLuint	myMinMagFilter
	Min/mag filter.
int	myFontHeight
	Font height.
int	myMaxRowWidth
	Diagnostic information.

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Detailed Description

Font for GLViewer_Drawer, Drawing bitmap and texture fonts in GLViewer

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Constructor & Destructor Documentation

GLViewer_TexFont::GLViewer_TexFont

(

)

Default constructor

References init(), myIsResizeable, myMinMagFilter, myQFont, and mySeparator.

GLViewer_TexFont::GLViewer_TexFont	(	QFont *	theFont,
		int	theSeparator = 2,
		bool	theIsResizeable = false,
		GLuint	theMinMagFilter = GL_LINEAR
	)

Constructor

Parameters:

theFont	- a base font
theSeparator	- separator between letters
theIsResizeable	- specifies whether text drawn by this object can be scaled along with the scene
theMinMagFilter	- min/mag filter, affects text sharpness

References init(), myIsResizeable, myMinMagFilter, myQFont, and mySeparator.

GLViewer_TexFont::~GLViewer_TexFont

(

)

Destructor

References myPositions, and myWidths.

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Member Function Documentation

bool GLViewer_TexFont::generateTexture

(

)

Generating font texture

References FirstSymbolNumber, test_table.l, GLViewer_TexFindId.myFontFamily, myFontHeight, GLViewer_TexFindId.myIsBold, GLViewer_TexFindId.myIsItal, GLViewer_TexFindId.myIsUndl, myMaxRowWidth, myMinMagFilter, myNbSymbols, GLViewer_TexFindId.myPointSize, myPositions, myQFont, myTexFont, GLViewer_TexIdStored.myTexFontHeight, myTexFontHeight, GLViewer_TexIdStored.myTexFontId, GLViewer_TexIdStored.myTexFontWidth, myTexFontWidth, GLViewer_TexFindId.myViewPortId, NB_TEX_COMP, TEX_ROW_GAP, TEX_ROW_LEN, and TexFontBase.

void GLViewer_TexFont::drawString	(	QString	theStr,
		GLdouble	theX = 0.0,
		GLdouble	theY = 0.0,
		GLfloat	theScale = 1.0
	)

Drawing string in viewer

Parameters:

theStr	- string to be drawn
theX	- X position
theY	- Y position
theScale	- scale coefficient

References FirstSymbolNumber, modelMatrix, myFontHeight, myIsResizeable, myPositions, mySeparator, myTexFont, myTexFontHeight, myTexFontWidth, myWidths, TEX_ROW_GAP, and TEX_ROW_LEN.

int GLViewer_TexFont.getSeparator

(

)

void GLViewer_TexFont.setSeparator

(

int

theSeparator

)

int GLViewer_TexFont::getStringWidth

(

QString

theStr

)

Returns:

width of string in pixels

References FirstSymbolNumber, mySeparator, and myWidths.

int GLViewer_TexFont::getStringHeight

(

)

Returns:

height of string in pixels

References myQFont.

void GLViewer_TexFont::clearTextBases

(

)

[static]

Clears all generated fonts

References BitmapFontCache, and TexFontBase.

void GLViewer_TexFont::init

(

)

[private]

Initializes font parameters

References FirstSymbolNumber, test_big_table.k, LastSymbolNumber, myFontHeight, myMaxRowWidth, myNbSymbols, myPositions, myQFont, myTexFontHeight, myTexFontWidth, myWidths, and TEX_ROW_LEN.

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Field Documentation

QMap< GLViewer_TexFindId, GLViewer_TexIdStored > GLViewer_TexFont::TexFontBase [static]

QMap< GLViewer_TexFindId, GLuint > GLViewer_TexFont::BitmapFontCache [static]

int GLViewer_TexFont.myNbSymbols [private]

int* GLViewer_TexFont.myWidths [private]

int* GLViewer_TexFont.myPositions [private]

QFont GLViewer_TexFont.myQFont [private]

GLuint GLViewer_TexFont.myTexFont [private]

int GLViewer_TexFont.myTexFontWidth [private]

int GLViewer_TexFont.myTexFontHeight [private]

int GLViewer_TexFont.mySeparator [private]

bool GLViewer_TexFont.myIsResizeable [private]

GLuint GLViewer_TexFont.myMinMagFilter [private]

int GLViewer_TexFont.myFontHeight [private]

int GLViewer_TexFont.myMaxRowWidth [private]