Generic draw functions

Modules
	QPic functions

Functions
void	Draw_AltString (int x, int y, const char *str)
	Draws a character string to the screen. More...
void	Draw_BlendScreen (quat_t color)
	Shift the screen colors. More...
void	Draw_Character (int x, int y, unsigned ch)
	Draws one 8*8 graphics character with 0 being transparent. More...
void	Draw_ConsoleBackground (int lines, byte alpha)
	Draw the console background with various optional effects. More...
void	Draw_Crosshair (void)
	Draw a crosshair at the center of the screen. More...
void	Draw_CrosshairAt (int ch, int x, int y)
	Draw the specified crosshair on the screen. More...
void	Draw_FadeScreen (void)
	Darken the screen. More...
void	Draw_Fill (int x, int y, int w, int h, int c)
	Clear a rectangle with a solid color. More...
void	Draw_Init (void)
	Initialize the draw stuff. More...
void	Draw_nString (int x, int y, const char *str, int count)
	Draws a character sub-string to the screen. More...
void	Draw_String (int x, int y, const char *str)
	Draws a character string to the screen. More...
void	Draw_TextBox (int x, int y, int width, int lines, byte alpha)
	Draw a text box on the screen. More...
void	Draw_TileClear (int x, int y, int w, int h)
	Clear a rectangle with a tiled background. More...

Variables
byte *	draw_chars

Detailed Description

Function Documentation

void Draw_AltString	(	int	x,
		int	y,
		const char *	str
	)

Draws a character string to the screen.

No line wrapping is performed.

Parameters

x	horizontal location of the top left corner of the character.
y	vertical location of the top left corner of the character.
str	8 bit character string to draw.

Note

See Draw_Character() for character set description. String is normal nul terminated C string. Characters of the string are forced to have their high bit set (ie, they will be in the range 0x80-0xff).

void Draw_BlendScreen

(

quat_t

color

)

Shift the screen colors.

void Draw_Character	(	int	x,
		int	y,
		unsigned	ch
	)

Draws one 8*8 graphics character with 0 being transparent.

It can be clipped to the top of the screen to allow the console to be smoothly scrolled off.

Parameters

x	horizontal location of the top left corner of the character.
y	vertical location of the top left corner of the character.
ch	8 bit character to draw.

Note

The character drawn is from the quake character set, which is (by default) standard ascii for 0x20-0x7e (white). 0xa0-0xfe is also standard ascii (brown). 0x01-0x1f and 0x80-0x9f are various drawing characters, and 0x7f is a backwards arrow.

void Draw_ConsoleBackground	(	int	lines,
		byte	alpha
	)

Draw the console background with various optional effects.

Parameters

lines	Vertical size in pixels of the console.
alpha	Console transparency level (255 = opaque).

Note

alpha is effective only in the OpenGL renderer. Effectively 255 (opaque) for the software renderer.

gl_conspin causes the background to spin.

gl_constretch causes the background to stretch rather than slide.

void Draw_Crosshair

(

void

)

Draw a crosshair at the center of the screen.

crosshair specifies which crosshair (1 = '+', 2 = large 'x' shape, 3 = fancy '+' shape) cl_crossx and cl_crossy offset the crosshair from the center of the screen.

void Draw_CrosshairAt	(	int	ch,
		int	x,
		int	y
	)

Draw the specified crosshair on the screen.

Parameters

ch	crosshair to draw
x	horizontal position of the center of the crosshair.
y	vertical position of the center of the crosshair.

See Draw_Crosshair() for description of crosshair values.

void Draw_FadeScreen

(

void

)

Darken the screen.

void Draw_Fill	(	int	x,
		int	y,
		int	w,
		int	h,
		int	c
	)

Clear a rectangle with a solid color.

Parameters

x	horizontal position of the upper left corner of the rectangle
y	horizontal position of the upper left corner of the rectangle
w	width of the rectangle
h	height of the rectangle
c	8 bit color index.

The color comes from the quake palette.

void Draw_Init

(

void

)

Initialize the draw stuff.

void Draw_nString	(	int	x,
		int	y,
		const char *	str,
		int	count
	)

Draws a character sub-string to the screen.

No line wrapping is performed.

Parameters

x	horizontal location of the top left corner of the character.
y	vertical location of the top left corner of the character.
str	8 bit character string to draw.
count	Maximum characters of the string to draw.

Note

See Draw_Character() for character set description. Draws up to count characters, or stops at the first nul character.

void Draw_String	(	int	x,
		int	y,
		const char *	str
	)

Draws a character string to the screen.

No line wrapping is performed.

Parameters

x	horizontal location of the top left corner of the character.
y	vertical location of the top left corner of the character.
str	8 bit character string to draw.

Note

See Draw_Character() for character set description. String is normal nul terminated C string.

void Draw_TextBox	(	int	x,
		int	y,
		int	width,
		int	lines,
		byte	alpha
	)

Draw a text box on the screen.

Parameters

x	horizontal location of the upper left corner of the box
y	vertical location of the upper left corner of the box
width	horizontal size in character cells of the region
lines	vertical size in character cells of the region
alpha	transparency of the box

void Draw_TileClear	(	int	x,
		int	y,
		int	w,
		int	h
	)

Clear a rectangle with a tiled background.

Parameters

x	horizontal position of the upper left corner of the rectangle
y	horizontal position of the upper left corner of the rectangle
w	width of the rectangle
h	height of the rectangle

The background used is the "backtile" WAD lump.

Variable Documentation

byte* draw_chars