This is a simple ray tracer program, based off of Ray Tracing in One Weekend by Peter Shirley. The referenced material uses C++ to program the ray tracer, whereas this project is written in C.
See the final render & references at the bottom.
% tree .
.
├── CMakeLists.txt
├── README.md
├── build.sh
├── include
│ ├── camera.h
│ ├── color.h
│ ├── hittable.h
│ ├── hittable_list.h
│ ├── image.h
│ ├── material.h
│ ├── point3.h
│ ├── ray.h
│ ├── sphere.h
│ ├── utility.h
│ ├── vec3.h
│ └── vector.h
├── run.sh
└── src
├── camera.c
├── color.c
├── hittable.c
├── hittable_list.c
├── main.c
├── material.c
├── point3.c
├── ray.c
├── sphere.c
├── utility.c
├── vec3.c
└── vector.c
To compile the program on Linux or MacOS, from the project directory, run
% ./build.sh
Once the program is compiled, execute it with
% ./run.sh
This will open the rendered image after, which will also be stored as results/render.ppm.
To change the image quality or size, see include/image.h. For more documentation, see the header files under include/. TODO - add more documentation.
JPG or PNG rather than PPM, maybe using stb.
OpenMP or CUDA could both be looked into.
Many structs are passed by value, rather than by reference. This is convenient for many reasons. Most of the structs are small, so the additional malloc & free calls may not be worth it. This may be worth it for the larger structs (as done for the hittable_list).
Ray Tracing in One Weekend seems to have been updated since I wrote most of this. I cleaned up my main.c file similarly, to leverage the camera object more. It might be good to go through the files in the future & clean up the organization.
The random_scene function could also be updated to create a more novel image, as well as changing the random_double function to be more random than it currently is.
