MiniRT

A small ray tracing engine written in C. Part of the 42 school curriculum.

Overview

MiniRT renders 3D scenes using ray tracing. You define scenes in .rt files with objects, lights, and camera settings, and the engine displays the result in real-time.

Supported Objects

• Spheres (sp)
• Planes (pl)
• Cylinders (cy) with caps
• Ellipsoids (el)

Features

• Ray tracing with hard shadows
• Multiple point lights (multilight)
• Ambient lighting
• Specular reflection
• Adjustable camera FOV (0-180°)
• Real-time camera movement and rotation

Building

make

Running

./miniRT <scene.rt>

Controls

• ESC - Exit
• W/S - Move forward/backward
• A/D - Strafe left/right
• R/F - Move up/down

Scene Format

Camera

C <x,y,z> <dx,dy,dz> <fov>

Lights

A <intensity> <r,g,b>          # Ambient
L <x,y,z> <intensity> <r,g,b>  # Point light (multiple supported)

Objects

sp <x,y,z> <radius> <r,g,b>
pl <x,y,z> <nx,ny,nz> <r,g,b>
cy <x,y,z> <nx,ny,nz> <radius> <height> <r,g,b>
el <x,y,z> <sx,sy,sz> <r,g,b>

Requirements

• MLX42 (graphics library)
• GCC
• Make

Example of rendering

Bicycle map

Plane map

Temple map

Room map