What is Rt

Rt is a Ray Tracer, this is a pedagocial project from 42 school, the project has to be in "C" language, at the 42 norm: https://cdn.intra.42.fr/pdf/pdf/317/norme.fr.pdf

The project subject is available here: https://cdn.intra.42.fr/pdf/pdf/33/rt.fr.pdf

Keys

Key	Purpose
arrow left	rotate camera left
arrow right	rotate camera right
arrow up	rotate camera up
arrow down	rotate camera down
q	roll camera left
e	roll cammera right
ctrl / c	move camera down
space	move camera up
w/a/s/d	move camera
i	toggle interface
x	display the current scene to stout in sda
l	dispay debug on stdout (current tree)
1	red filter
2	green filter
3	blue filter
4	purple filter
5	yellow filter
6	cyan filter
7	sepia filter
m	switch to next camera
shift	move faster (wasdeq...)
r	reset camera
y	save current camera
p	force rebuild of current scene
f	toggle full screen
t	display current used textures
o	display camera matrix

Formats

There is two supported formats for this project: the first one developed was ". Very quicly we needed a more flexible format: the .sda files

Yolo

yolo" files, those are simple files, each object is described in one line and parameters are separated with a simple space

Sda

for "Scene Describe Archive" are a more complex files format, having defaults parameters, and non mandatory values

Command line parameters

Parameter	Utility
-f	start in full screen
-s 1020x1080	specify resolution
-e scene.yolo	convert a .yolo scene to a .sda one
-b scene target.bmp	render the image into a file instead of window
-h	display help then quit

Capabilities

• Reflections (on all object)
• Refraction
• Textures
• Transparency
• Normal mapping
• Multiple lighting

Screenshoot

Compile

Archlinux

sudo pacman -S extra/sdl2 extra/sdl2_ttf extra/sdl2_image make clang
make

Ubuntu

sudo apt install libsdl2-ttf-dev libsdl2-dev build-essential libsdl2-2.0-0 libsdl2-ttf-2.0-0 libsdl2-image-2.0-0 libsdl2-image-dev clang
make