aaLine.cpp File Reference

---

Detailed Description

Draws antialiased lines (Implementation).

Draws antialiased lines of various styles.

Version:

1.3 - 2007/08/16

Definition in file aaLine.cpp.

#include "aaLine.h"
#include <iostream>

Include dependency graph for aaLine.cpp:

Go to the source code of this file.

Defines
#define	PLOTX(x, y, c1, c2)
	Draw AA line fragment (x-direction).
#define	PLOTY(x, y, c1, c2)
	Draw AA line fragment (y-direction).
#define	PLOTCX(x, y, c1, c2)
	Draw coloured AA line fragment (x-direction).
#define	PLOTCY(x, y, c1, c2)
	Draw coloured AA line fragment (y-direction).
#define	PLOTCSY(x, y, c1, c2)
	Draw coloured stroked AA line fragment (x-direction).
#define	PLOTCSX(x, y, c1, c2)
	Draw coloured stroked AA line fragment (y-direction).
Functions
int	ipart (double x)
	Return interger part.
double	fpart (double x)
	Return fractional part.
double	rfpart (double x)
	Return 1.0-fractional part.
void	sub (unsigned char &ch, unsigned char val)
	Return smaller of two values.
void	aaline (unsigned char *data, int stride, int x1, int x2, float y1, float y2)
	Draws greyscale antialiased line.
void	aacolline (unsigned char *data, int stride, int x1, int x2, float y1, float y2, unsigned char r, unsigned char g, unsigned char b)
	Draws colour antialiased line.
void	aacolstrokeline (unsigned char *data, int stride, int x1, int x2, float y1, float y2, FXColor c, int stroke, int w, int h)
	Draws colour stroked antialiased line.
void	aarampcolstrokeline (unsigned char *data, int stride, int x1, int x2, float y1, float y2, FXColor sc, FXColor ec, int stroke, int w, int h)
	Draws gradient coloured stroked antialiased line.

---

Function Documentation

void aacolline	(	unsigned char *	data,
		int	stride,
		int	x1,
		int	x2,
		float	y1,
		float	y2,
		unsigned char	r,
		unsigned char	g,
		unsigned char	b
	)

Draws colour antialiased line.

Draw colour antialiased line between coordinate points.

Parameters:

	data	Data to draw line to.
	stride	Width of data array.
	x1	Starting x pixel.
	x2	Ending x pixel.
	y1	Starting y pixel.
	y2	Ending y pixel.
	r	Red intensity.
	g	Green intensity.
	b	Blue intensity.

Definition at line 213 of file aaLine.cpp.

void aacolstrokeline	(	unsigned char *	data,
		int	stride,
		int	x1,
		int	x2,
		float	y1,
		float	y2,
		FXColor	c,
		int	stroke,
		int	w,
		int	h
	)

Draws colour stroked antialiased line.

Draw colour antialiased line with set thickness between coordinate points.

Parameters:

	data	Data to draw line to.
	stride	Width of data array.
	x1	Starting x pixel.
	x2	Ending x pixel.
	y1	Starting y pixel.
	y2	Ending y pixel.
	c	Colour.
	stroke	Line width.
	w	Width of drawing area (for clipping).
	h	Height of drawing area (for clipping).

Definition at line 308 of file aaLine.cpp.

Referenced by GreyLabWindow::cmdLSRedraw(), and GreyLabWindow::renderObjects().

Here is the caller graph for this function:

void aaline	(	unsigned char *	data,
		int	stride,
		int	x1,
		int	x2,
		float	y1,
		float	y2
	)

Draws greyscale antialiased line.

Draw greyscale antialiased line between coordinate points.

Parameters:

	data	Data to draw line to.
	stride	Width of data array.
	x1	Starting x pixel.
	x2	Ending x pixel.
	y1	Starting y pixel.
	y2	Ending y pixel.

Definition at line 131 of file aaLine.cpp.

void aarampcolstrokeline	(	unsigned char *	data,
		int	stride,
		int	x1,
		int	x2,
		float	y1,
		float	y2,
		FXColor	sc,
		FXColor	ec,
		int	stroke,
		int	w,
		int	h
	)

Draws gradient coloured stroked antialiased line.

Draw antialiased line with set thickness between coordinate points, interpolating the colour between the ends.

Parameters:

	data	Data to draw line to.
	stride	Width of data array.
	x1	Starting x pixel.
	x2	Ending x pixel.
	y1	Starting y pixel.
	y2	Ending y pixel.
	sc	Start colour.
	ec	End colour.
	stroke	Line width.
	w	Width of drawing area (for clipping).
	h	Height of drawing area (for clipping).

Definition at line 376 of file aaLine.cpp.

Referenced by GreyLabWindow::cmdLSRedraw().

Here is the caller graph for this function:

---