linedraw_gl Namespace Reference

Functions
void	DrawPixel (Uint32 color, int x, int y)
void	DrawTransPixel (Uint32 color, int x, int y, unsigned char alpha)
void	DrawPixelClip (Uint32 color, int x, int y)
void	DrawTransPixelClip (Uint32 color, int x, int y, unsigned char alpha)
void	DrawHLine (Uint32 color, int x, int y, int width)
void	DrawTransHLine (Uint32 color, int x, int y, int width, unsigned char alpha)
void	DrawHLineClip (Uint32 color, int x, int y, int width)
void	DrawTransHLineClip (Uint32 color, int x, int y, int width, unsigned char alpha)
void	DrawVLine (Uint32 color, int x, int y, int height)
void	DrawTransVLine (Uint32 color, int x, int y, int height, unsigned char alpha)
void	DrawVLineClip (Uint32 color, int x, int y, int height)
void	DrawTransVLineClip (Uint32 color, int x, int y, int height, unsigned char alpha)
void	DrawLine (Uint32 color, int x1, int y1, int x2, int y2)
static int	ClipCodeLine (int x, int y)
static int	LineIsUnclippedOnSameSide (int code1, int code2)
static int	LineIsUnclipped (int code1, int code2)
void	DrawLineClip (Uint32 color, int x1, int y1, int x2, int y2)
void	DrawTransLine (Uint32 color, int sx, int sy, int dx, int dy, unsigned char alpha)
void	DrawTransLineClip (Uint32 color, int sx, int sy, int dx, int dy, unsigned char alpha)
void	DrawRectangle (Uint32 color, int x, int y, int w, int h)
void	DrawTransRectangle (Uint32 color, int x, int y, int w, int h, unsigned char alpha)
void	DrawRectangleClip (Uint32 color, int x, int y, int w, int h)
void	DrawTransRectangleClip (Uint32 color, int x, int y, int w, int h, unsigned char alpha)
void	FillRectangle (Uint32 color, int x, int y, int w, int h)
void	FillTransRectangle (Uint32 color, int x, int y, int w, int h, unsigned char alpha)
void	FillRectangleClip (Uint32 color, int x, int y, int w, int h)
void	FillTransRectangleClip (Uint32 color, int x, int y, int w, int h, unsigned char alpha)
void	DrawCircle (Uint32 color, int x, int y, int radius)
void	DrawCircleClip (Uint32 color, int x, int y, int radius)
void	DrawTransCircle (Uint32 color, int x, int y, int radius, unsigned char alpha)
void	DrawTransCircleClip (Uint32 color, int x, int y, int radius, unsigned char alpha)
void	FillCircle (Uint32 color, int x, int y, int radius)
void	FillTransCircle (Uint32 color, int x, int y, int radius, unsigned char alpha)
void	FillCircleClip (Uint32 color, int x, int y, int radius)
void	FillTransCircleClip (Uint32 color, int x, int y, int radius, unsigned char alpha)
void	InitLineDraw (void)
	Simply invalidates whole window or screen.

---

Function Documentation

static int linedraw_gl::ClipCodeLine	(	int	x,
		int	y
	)			[static]

Delivers bitmask denoting given point is left/right/above/below clip rectangle, used for faster determinination of clipped position.

Parameters:

	x	pixel's x position (not restricted to screen width)
	y	pixel's y position (not restricted to screen height)

Definition at line 1273 of file linedraw.cpp.

References ClipCodeAbove, ClipCodeBelow, ClipCodeInside, ClipCodeLeft, ClipCodeRight, ClipX1, ClipX2, ClipY1, and ClipY2.

Referenced by DrawLineClip().

void linedraw_gl::DrawCircle	(	Uint32	color,
		int	x,
		int	y,
		int	radius
	)

Draw circle.

Parameters:

	color	color
	x	Center x coordinate on the screen
	y	Center y coordinate on the screen
	radius	radius of circle

Definition at line 1645 of file linedraw.cpp.

References Assert, and DrawPixel().

Referenced by CVideo::DrawCircle(), and DrawTransCircle().

void linedraw_gl::DrawCircleClip	(	Uint32	color,
		int	x,
		int	y,
		int	radius
	)

Draw circle clipped.

Parameters:

	color	color
	x	Center x coordinate on the screen
	y	Center y coordinate on the screen
	radius	radius of circle

Definition at line 1704 of file linedraw.cpp.

References Assert, and DrawPixelClip().

Referenced by CVideo::DrawCircleClip(), and DrawTransCircleClip().

void linedraw_gl::DrawHLine	(	Uint32	color,
		int	x,
		int	y,
		int	width
	)

Draw horizontal line unclipped.

Parameters:

	color	color
	x	x coordinate on the screen
	y	y coordinate on the screen
	width	width of line (0=don't draw).

Definition at line 1054 of file linedraw.cpp.

References CVideo::GetRGBA(), and Video.

Referenced by CVideo::DrawHLine(), DrawHLineClip(), DrawRectangleClip(), and DrawTransHLine().

void linedraw_gl::DrawHLineClip	(	Uint32	color,
		int	x,
		int	y,
		int	width
	)

Draw horizontal line clipped.

Parameters:

	color	color
	x	x coordinate on the screen
	y	y coordinate on the screen
	width	width of line (0=don't draw).

Definition at line 1095 of file linedraw.cpp.

References ClipX1, ClipX2, ClipY2, and DrawHLine().

Referenced by CVideo::DrawHLineClip(), DrawTransHLineClip(), and FillCircleClip().

void linedraw_gl::DrawLine	(	Uint32	color,
		int	x1,
		int	y1,
		int	x2,
		int	y2
	)

Draw line unclipped into 32bit framebuffer.

Parameters:

	color	color
	x1	Source x coordinate on the screen
	y1	Source y coordinate on the screen
	x2	Destination x coordinate on the screen
	y2	Destination y coordinate on the screen

Definition at line 1235 of file linedraw.cpp.

References CVideo::GetRGBA(), and Video.

Referenced by CVideo::DrawLine(), DrawLineClip(), and DrawTransLine().

void linedraw_gl::DrawLineClip	(	Uint32	color,
		int	x1,
		int	y1,
		int	x2,
		int	y2
	)

Draw line clipped. Based on Sutherland-Cohen clipping technique (Replaces Liang/Barksy clipping algorithm in CVS version 1.18, which might be faster, but that one contained some BUGs)

Parameters:

	color	color
	x1	Source x coordinate on the screen
	y1	Source y coordinate on the screen
	x2	Destination x coordinate on the screen
	y2	Destination y coordinate on the screen

Definition at line 1330 of file linedraw.cpp.

References Assert, ClipCodeAbove, ClipCodeBelow, ClipCodeLeft, ClipCodeLine(), ClipX1, ClipX2, ClipY1, ClipY2, DrawLine(), int(), LineIsUnclipped(), and LineIsUnclippedOnSameSide().

Referenced by CVideo::DrawLineClip(), and DrawTransLineClip().

void linedraw_gl::DrawPixel	(	Uint32	color,
		int	x,
		int	y
	)

Draw pixel unclipped.

Parameters:

	color	color
	x	x coordinate on the screen
	y	y coordinate on the screen

Definition at line 982 of file linedraw.cpp.

References CVideo::GetRGBA(), and Video.

Referenced by DrawCircle(), DrawPixelClip(), and DrawTransPixel().

void linedraw_gl::DrawPixelClip	(	Uint32	color,
		int	x,
		int	y
	)

Draw pixel clipped to current clip setting.

Parameters:

	color	color
	x	x coordinate on the screen
	y	y coordinate on the screen

Definition at line 1020 of file linedraw.cpp.

References ClipX2, ClipY2, and DrawPixel().

Referenced by DrawCircleClip(), CVideo::DrawPixelClip(), and DrawTransPixelClip().

void linedraw_gl::DrawRectangle	(	Uint32	color,
		int	x,
		int	y,
		int	w,
		int	h
	)

Draw rectangle.

Parameters:

	color	color
	x	x coordinate on the screen
	y	y coordinate on the screen
	h	height of rectangle (0=don't draw).
	w	width of rectangle (0=don't draw).

Definition at line 1407 of file linedraw.cpp.

References CVideo::GetRGBA(), and Video.

Referenced by CVideo::DrawRectangle(), and DrawTransRectangle().

void linedraw_gl::DrawRectangleClip	(	Uint32	color,
		int	x,
		int	y,
		int	w,
		int	h
	)

Draw rectangle clipped.

Parameters:

	color	color
	x	x coordinate on the screen
	y	y coordinate on the screen
	h	height of rectangle (0=don't draw).
	w	width of rectangle (0=don't draw).

Definition at line 1459 of file linedraw.cpp.

References ClipX1, ClipX2, ClipY1, ClipY2, DrawHLine(), and DrawVLine().

Referenced by CVideo::DrawRectangleClip(), and DrawTransRectangleClip().

void linedraw_gl::DrawTransCircle	(	Uint32	color,
		int	x,
		int	y,
		int	radius,
		unsigned char	alpha
	)

Draw translucent circle.

Parameters:

	color	color
	x	Center x coordinate on the screen
	y	Center y coordinate on the screen
	radius	radius of circle
	alpha	alpha value of pixels.

Definition at line 1764 of file linedraw.cpp.

References DrawCircle(), CVideo::GetRGB(), CVideo::MapRGBA(), and Video.

Referenced by CVideo::DrawTransCircle().

void linedraw_gl::DrawTransCircleClip	(	Uint32	color,
		int	x,
		int	y,
		int	radius,
		unsigned char	alpha
	)

Draw translucent circle clipped.

Parameters:

	color	color
	x	Center x coordinate on the screen
	y	Center y coordinate on the screen
	radius	radius of circle
	alpha	alpha value of pixels.

Definition at line 1783 of file linedraw.cpp.

References DrawCircleClip(), CVideo::GetRGB(), CVideo::MapRGBA(), and Video.

Referenced by CVideo::DrawTransCircleClip().

void linedraw_gl::DrawTransHLine	(	Uint32	color,
		int	x,
		int	y,
		int	width,
		unsigned char	alpha
	)

Draw translucent horizontal line unclipped.

Parameters:

	color	color
	x	x coordinate on the screen
	y	y coordinate on the screen
	width	width of line (0=don't draw).
	alpha	alpha value of pixels.

Definition at line 1077 of file linedraw.cpp.

References DrawHLine(), CVideo::GetRGB(), CVideo::MapRGBA(), and Video.

Referenced by CVideo::DrawTransHLine().

void linedraw_gl::DrawTransHLineClip	(	Uint32	color,
		int	x,
		int	y,
		int	width,
		unsigned char	alpha
	)

Draw translucent horizontal line clipped.

Parameters:

	color	Color index
	x	X pixel coordinate on the screen
	y	Y c pixeloordinate on the screen
	width	Width of line (0=don't draw)
	alpha	Alpha value of pixels

Definition at line 1126 of file linedraw.cpp.

References DrawHLineClip(), CVideo::GetRGB(), CVideo::MapRGBA(), and Video.

Referenced by CVideo::DrawTransHLineClip().

void linedraw_gl::DrawTransLine	(	Uint32	color,
		int	sx,
		int	sy,
		int	dx,
		int	dy,
		unsigned char	alpha
	)

Draw a transparent line

Definition at line 1381 of file linedraw.cpp.

References DrawLine().

Referenced by CVideo::DrawTransLine().

void linedraw_gl::DrawTransLineClip	(	Uint32	color,
		int	sx,
		int	sy,
		int	dx,
		int	dy,
		unsigned char	alpha
	)

Draw a transparent line clipped

Definition at line 1391 of file linedraw.cpp.

References DrawLineClip().

Referenced by CVideo::DrawTransLineClip().

void linedraw_gl::DrawTransPixel	(	Uint32	color,
		int	x,
		int	y,
		unsigned char	alpha
	)

Draw translucent pixel unclipped.

Parameters:

	color	color
	x	x coordinate on the screen
	y	y coordinate on the screen
	alpha	alpha value of pixel.

Definition at line 1003 of file linedraw.cpp.

References DrawPixel(), CVideo::GetRGB(), CVideo::MapRGBA(), and Video.

void linedraw_gl::DrawTransPixelClip	(	Uint32	color,
		int	x,
		int	y,
		unsigned char	alpha
	)

Draw translucent pixel clipped to current clip setting.

Parameters:

	color	color
	x	x coordinate on the screen
	y	y coordinate on the screen
	alpha	alpha value of pixel.

Definition at line 1036 of file linedraw.cpp.

References DrawPixelClip(), CVideo::GetRGB(), CVideo::MapRGBA(), and Video.

Referenced by CVideo::DrawTransPixelClip().

void linedraw_gl::DrawTransRectangle	(	Uint32	color,
		int	x,
		int	y,
		int	w,
		int	h,
		unsigned char	alpha
	)

Draw translucent rectangle.

Parameters:

	color	color
	x	x coordinate on the screen
	y	y coordinate on the screen
	h	height of rectangle (0=don't draw).
	w	width of rectangle (0=don't draw).
	alpha	alpha value of pixel.

Definition at line 1440 of file linedraw.cpp.

References DrawRectangle(), CVideo::GetRGB(), CVideo::MapRGBA(), and Video.

Referenced by CVideo::DrawTransRectangle().

void linedraw_gl::DrawTransRectangleClip	(	Uint32	color,
		int	x,
		int	y,
		int	w,
		int	h,
		unsigned char	alpha
	)

Draw translucent rectangle clipped.

Parameters:

	color	color
	x	x coordinate on the screen
	y	y coordinate on the screen
	h	height of rectangle (0=don't draw).
	w	width of rectangle (0=don't draw).
	alpha	alpha value of pixels.

Definition at line 1545 of file linedraw.cpp.

References DrawRectangleClip(), CVideo::GetRGB(), CVideo::MapRGBA(), and Video.

Referenced by CVideo::DrawTransRectangleClip().

void linedraw_gl::DrawTransVLine	(	Uint32	color,
		int	x,
		int	y,
		int	height,
		unsigned char	alpha
	)

Draw translucent vertical line unclipped.

Parameters:

	color	color
	x	x coordinate on the screen
	y	y coordinate on the screen
	height	height of line (0=don't draw).
	alpha	alpha value of pixels.

Definition at line 1167 of file linedraw.cpp.

References DrawVLine(), CVideo::GetRGB(), CVideo::MapRGBA(), and Video.

Referenced by CVideo::DrawTransVLine().

void linedraw_gl::DrawTransVLineClip	(	Uint32	color,
		int	x,
		int	y,
		int	height,
		unsigned char	alpha
	)

Draw translucent vertical line clipped.

Parameters:

	color	color
	x	x coordinate on the screen
	y	y coordinate on the screen
	height	height of line (0=don't draw).
	alpha	alpha value of pixels.

Definition at line 1216 of file linedraw.cpp.

References DrawVLineClip(), CVideo::GetRGB(), CVideo::MapRGBA(), and Video.

Referenced by CVideo::DrawTransVLineClip().

void linedraw_gl::DrawVLine	(	Uint32	color,
		int	x,
		int	y,
		int	height
	)

Draw vertical line unclipped.

Parameters:

	color	color
	x	x coordinate on the screen
	y	y coordinate on the screen
	height	height of line (0=don't draw).

Definition at line 1144 of file linedraw.cpp.

References CVideo::GetRGBA(), and Video.

Referenced by DrawRectangleClip(), DrawTransVLine(), CVideo::DrawVLine(), DrawVLineClip(), and FillCircle().

void linedraw_gl::DrawVLineClip	(	Uint32	color,
		int	x,
		int	y,
		int	height
	)

Draw vertical line clipped.

Parameters:

	color	color
	x	x coordinate on the screen
	y	y coordinate on the screen
	height	height of line (0=don't draw).

Definition at line 1185 of file linedraw.cpp.

References ClipX2, ClipY1, ClipY2, and DrawVLine().

Referenced by DrawTransVLineClip(), and CVideo::DrawVLineClip().

void linedraw_gl::FillCircle	(	Uint32	color,
		int	x,
		int	y,
		int	radius
	)

Fill circle.

Parameters:

	color	color
	x	Center x coordinate on the screen
	y	Center y coordinate on the screen
	radius	radius of circle

Definition at line 1801 of file linedraw.cpp.

References DrawVLine().

Referenced by CVideo::FillCircle(), and FillTransCircle().

void linedraw_gl::FillCircleClip	(	Uint32	color,
		int	x,
		int	y,
		int	radius
	)

Fill circle clipped.

Parameters:

	color	color
	x	Center x coordinate on the screen
	y	Center y coordinate on the screen
	radius	radius of circle

Definition at line 1862 of file linedraw.cpp.

References DrawHLineClip().

Referenced by CVideo::FillCircleClip(), and FillTransCircleClip().

void linedraw_gl::FillRectangle	(	Uint32	color,
		int	x,
		int	y,
		int	w,
		int	h
	)

Fill rectangle.

Parameters:

	color	color
	x	x coordinate on the screen
	y	y coordinate on the screen
	h	height of rectangle (0=don't draw).
	w	width of rectangle (0=don't draw).

Definition at line 1564 of file linedraw.cpp.

References CVideo::GetRGBA(), and Video.

Referenced by CVideo::FillRectangle(), FillRectangleClip(), and FillTransRectangle().

void linedraw_gl::FillRectangleClip	(	Uint32	color,
		int	x,
		int	y,
		int	w,
		int	h
	)

Fill rectangle clipped.

Parameters:

	color	color
	x	x coordinate on the screen
	y	y coordinate on the screen
	h	height of rectangle (0=don't draw).
	w	width of rectangle (0=don't draw).

Definition at line 1610 of file linedraw.cpp.

References CLIP_RECTANGLE, and FillRectangle().

Referenced by CVideo::FillRectangleClip(), and FillTransRectangleClip().

void linedraw_gl::FillTransCircle	(	Uint32	color,
		int	x,
		int	y,
		int	radius,
		unsigned char	alpha
	)

Fill translucent circle clipped.

Parameters:

	color	color
	x	Center x coordinate on the screen
	y	Center y coordinate on the screen
	radius	radius of circle
	alpha	alpha value of pixels.

Definition at line 1844 of file linedraw.cpp.

References FillCircle(), CVideo::GetRGB(), CVideo::MapRGBA(), and Video.

Referenced by CVideo::FillTransCircle().

void linedraw_gl::FillTransCircleClip	(	Uint32	color,
		int	x,
		int	y,
		int	radius,
		unsigned char	alpha
	)

Fill translucent circle clipped.

Parameters:

	color	color
	x	Center x coordinate on the screen
	y	Center y coordinate on the screen
	radius	radius of circle
	alpha	alpha value of pixels.

Definition at line 1908 of file linedraw.cpp.

References FillCircleClip(), CVideo::GetRGB(), CVideo::MapRGBA(), and Video.

Referenced by CVideo::FillTransCircleClip().

void linedraw_gl::FillTransRectangle	(	Uint32	color,
		int	x,
		int	y,
		int	w,
		int	h,
		unsigned char	alpha
	)

Draw translucent rectangle.

Parameters:

	color	color
	x	x coordinate on the screen
	y	y coordinate on the screen
	h	height of rectangle (0=don't draw).
	w	width of rectangle (0=don't draw).
	alpha	alpha value of pixel.

Definition at line 1591 of file linedraw.cpp.

References FillRectangle(), CVideo::GetRGB(), CVideo::MapRGBA(), and Video.

Referenced by CVideo::FillTransRectangle().

void linedraw_gl::FillTransRectangleClip	(	Uint32	color,
		int	x,
		int	y,
		int	w,
		int	h,
		unsigned char	alpha
	)

Fill rectangle translucent clipped.

Parameters:

	color	color
	x	x coordinate on the screen
	y	y coordinate on the screen
	h	height of rectangle (0=don't draw).
	w	width of rectangle (0=don't draw).
	alpha	alpha value of pixels.

Definition at line 1627 of file linedraw.cpp.

References FillRectangleClip(), CVideo::GetRGB(), CVideo::MapRGBA(), and Video.

Referenced by CVideo::FillTransRectangleClip().

void linedraw_gl::InitLineDraw

(

void

)

Simply invalidates whole window or screen.

Initialize line draw

Definition at line 1921 of file linedraw.cpp.

Referenced by InitLineDraw().

static int linedraw_gl::LineIsUnclipped	(	int	code1,
		int	code2
	)			[static]

Denotes part of (or entire) line located outside clip rectangle (point 1 and/or 2 is outside clip rectangle)

Parameters:

	code1	ClipCode of one point of line
	code2	ClipCode of second point of line

Definition at line 1313 of file linedraw.cpp.

Referenced by DrawLineClip().

static int linedraw_gl::LineIsUnclippedOnSameSide	(	int	code1,
		int	code2
	)			[static]

Denotes entire line located at the same side outside clip rectangle (point 1 and 2 are both as left/right/above/below the clip rectangle)

Parameters:

	code1	ClipCode of one point of line
	code2	ClipCode of second point of line

Definition at line 1301 of file linedraw.cpp.

Referenced by DrawLineClip().