Raytracer

Description

This is a raytracing engine written in C++.

Features

Geometric primitives

• Sphere
• Plane
• Triangle

Materials

• Phong
• Matte
• Cosine

Lights

• Point light
• Ambient light
• Spot light

Camera

• Perspective camera
• Parallel camera

Anti-aliasing

• Simple sampling
• Regular sampling
• Random sampling
• Jittered sampling

Acceleration structures

• Uniform grid
• Bounding volume hierarchy

Build

Requirements

• C++ compiler

Instructions

git clone
cd raytracer

Custom Script (Windows)

./run.bat buildName

Manual

g++ raytracer.cpp tracer/*.cpp cameras/*.cpp geometry/*.cpp lights/*.cpp materials/*.cpp samplers/*.cpp acceleration/*.cpp utilities/*.cpp world/*.cpp build/"build%source_file%".cpp -o a.exe

./a.exe

The raytracer will output a ppm file in the raytracer folder. To convert the ppm file to a png file, run the following command:

python convert.py $source_file

Examples

Babar Azam

The following image was rendered using the following settings:

• 1000 x 1000 resolution
• Jittered sampling
• 25 samples per pixel
• Grid acceleration structure
• Perspective camera
• Phong material

by running the following command:

./run.bat BabarAzam

Hello World

The following image was rendered using the following settings:

• 400 x 400 resolution
• Simple sampling
• 1 sample per pixel
• No acceleration structure
• Perspective camera
• Cosine material

by running the following command:

./run.bat HelloWorld

Acknowledgements

• Ray Tracing from the Ground Up - Kevin Suffern
• Sketchfab
• Dr. Waqar Saleem