Raytracer

Implementation of a raytracing engine

features

• basic raytracing
• support for multiple object types:
  • Spheres
  • Planes
  • Triangles
  • Meshes (collection of triangles implementation)
  • Blobs/Metaballs (generates mesh using marching cubes)
• support for multiple light types:
  • point lights
  • sun lights
  • ambient lights
• supported variable material properties:
  • diffuse color
  • specular factor
  • specular spread/roughness
  • reflectivity
• Image textured material
• UV mapped primitives:
  • Triangles
  • Spheres
  • Meshes
• Graph-based Procedural texturing with many node types
  • configurable and parsable via JSON
• obj scene importer
• JSON-based scene format (with schemas)

External libraries used

• NlohmannJSON
• TinyObjLoader
• LodePNG

Building

In the repo's directory, run:

./setup.sh

This will launch cmake to configure the project to build in the build directory.

To build the binary (on linux), change into the build directory and run make. This will create a raytracer-tp binary.

Using VSCode is recommended for editing and viewing the code.

Usage

you can call the raytracer-tp binary in two ways:

./raytracer-tp

will render a predetermined demo scene

./raytracer-tp <path-to-json-scene>

will render a scene bassed on the contents of the json file.

Authors & main contributions

• Ancelin Bouchet:

  • base raytracing engine (objects, materials)
  • Graph-based procedural texture system
  • procedural texture nodes
  • JSON import for procedural texture nodes
  • JSON schemas

• Yorick Madelain:

  • PNG import
  • OBJ import
  • JSON import
  • final renders & demo materials