README.md

WU Algorithm

made by tmaluh (_ipal)

Testing Xiaolin Wu's line algorithm on C using SDL2.

Randomized start and end lines positions on each ./wu_algo startup. If you wants to change randomatic lines counter - use flag --linesCounter(described below), default is: 10.

Requirements pre-installations:

Fedora:

$> sudo dnf install SDL2-devel-2.0.9-3.fc30.x86_64

MacOS:

$> brew install sdl2

Compiling

Use make for compiling all files.

When you have already installed SDL2 library you can use this simple rules:

• make: Compile all. (On Fedora can require password if SDL2 libraries not installed)
• make clean: Delete all ./wu_algo temporary(*.o) files.
• make del: In this project equals to make fclean.
• make fclean: Expands make clean to delete also executable ./wu_algo.
• make re: It's rules - make fclean & make in one.
• make pre: It's rules - make del & make in one.
• make debug: Re-compile ./wu_algo without optimization flags but with -g3 for debug.

Keybinds:

Description	Key
Re-random all line positions	R
Exit.	ESC

Flags:

Flag	Description	Shortcut	Default value	Param type
--maxLineLength	Set max randomize line length.	-mll	equals to WIN_X	Unsigned integer. (Min: 25; Max: equals to Default Value;)
--linesCounter	Set how much lines radnomize, calculate and draw.	-lc	10	Unsigned Integer. (Min: 1; Max: 1500000)
--foregroundColor	Change foreground(lines) color.	-fgc	0xffffff	HEX string, starts with '0x'.
--backgroundColor	Change background color.	-bgc	0x0	HEX string, starts with '0x'.

Example:

$> ./wu_algo -lc 1000 -bgc 0xaa00ff -fgc 0x1ffff