yataji / RT

RT

générer des images de synthèse selon la méthode du Ray-Tracing. Ces images de synthèse représentent une scène, vue d’une position et d’un angle spécifiques, définie par des objets géométriques simples, entiers ou partiels, et disposant d’un système d’éclairage.

Installing

install SDL2.

• Linux :

$ sudo apt install libsdl2-2.0-0 libsdl2-gfx-1.0-0 libsdl2-image-2.0-0 libsdl2-mixer-2.0-0 libsdl2-net-2.0-0 libsdl2-ttf-2.0-0

• Mac (takes time) :

$ brew install sdl2 sdl2_image sdl2_ttf

Then run :

$ make

Compiling

Use make for compiling all files.

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

• make: Compile all.
• make clean: Delete temporary files.
• make fclean: Delete executable Rt file & libft.
• make re: It's rules - make fclean & make in one.

Usage

The programm takes a scene written in yaml as an argument. Multiple scenes are directly available in the directory "./correction/" .

$ usage: ./rt correction/(chose a file .yaml)

### Basics
- 4 objects : sphere, plane, cylinder, cone
- Multiple light sources
- Phong shading
- Shadows
- Translations & rotations (camera & objects)

# ![multispot](./imgs/multi.bmp)

### Limited objects
- Each object can be cut on 3 different axes
- These 3 axes can be either the world axes or the object axes
- Translations & rotations are still working with cut objects

### Textures
- Each object can have a texture put on it
- Variable scale & position

# ![textures](imgs/room.bmp)

### Refraction / Reflection

- Both have adjustable percentages
- Implementation of Snell-Descartes's indice of refraction
- A semi-transparent object has its colors projected in its shadow
- Checkerboard / rainbow

# ![refraction](imgs/ref.bmp)

### Visual effects
- Sepia
- blur

# ![refraction](imgs/sepia.bmp)

### Lights
- Colored lights
- multi lights
- ambient %

### Optimization
- Multi-threading