"Fil de fer" in french. This project is the first 3D project in our curriculum at 42 school.
minilibx installed and working : sudo apt-get install xorg libxext-dev zlib1g-dev libbsd-dev
make and ./fdf MAP_PATH
Like ./fdf France.XXL.fdf
All maps are stored in maps directory. Some of them are color implemented, others aren't so it's my default color choice.
Movements : W, A, S, D
Rotations : Up, Down, Left, Right (Arrow keys)
Flat view : P
Topography view : I
Zoom in / out : G / T
Quit : Esc or click on red cross
t2 :
France :
Japan :
Julia :
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Library MLX (MiniLibX) : Graphical windows, images and hooks among other things. An important notion is that usually a pixel is a 4 bytes int (it is a color), containing trgb properties.
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Structures can't be avoided here. A huge structure containing all the mlx's requirements, and the map's parameters, that might be called fdf, is required because some functions such as hooks can have only one argument.
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Parsing: Some maps are tricky to parse. They can start with a space, some others contain hex colors alongside the altitude, etc.
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Line drawing : there comes the bresenham's alogrithm. It's well explained on Wikipedia, but it need to be the fastest possible in order to have the most fluid program. It can be reducted to 4 functions, and even 2 if well optimized.
https://harm-smits.github.io/42docs/libs/minilibx/hooks.html
3D rendering : https://www.kmjn.org/notes/3d_rendering_intro.html
Download the good MLX : https://github.com/42Paris/minilibx-linux/blob/master/mlx.h
Pixel drawing : https://aurelienbrabant.fr/blog/pixel-drawing-with-the-minilibx
Pixel drawing : https://github.com/lavrenovamaria/42-fract-ol
Hex char to int : https://stackoverflow.com/questions/10156409/convert-hex-string-char-to-int