This is a C implementation of Peter Shirley's "Ray Tracing in One Weekend" book.
Thanks for Peter Shirley's kindness, the book is now available to the public for free online here.
And Peter Shirley has made his raytracer available on his GitHub.
Run make to build:
$ make
Run the example usage of raytracing:
$ make test
To run unit tests, give "check" as an argument:
$ make check
To run OpenMP version to improve raytracer performance, give "OPT=1" as an argument:
$ make OPT=1
And the output executable file called raytracing_opt
To make Gprof reports detailed information, give "PROFILE=1" as an argument:
$ make PROFILE=1
The arguments of the raytracer are listed below:
$ ./raytracing [input TXT file] [output PPM file]
For example:
$ ./raytracing trace1.txt out1.ppm
Run $ ./raytracing can also see the list of command-line options
The input file contains the following information:
- The length and width of the image.
- The number of spheres to be drawn.
- The location, radius, material, vector of the sphere.
Summarize:
[length] [width]
[number of spheres]
[location x] [location y] [location z] [radius] [material] [vector x] [vector y] [vector z]
For example:
1200 800
5
0 0 -1 0.5 lambertian 0.1 0.2 0.5
0 -100.5 -1 100 lambertian 0.8 0.8 0.0
1 0 -1 0.5 metal 0.8 0.6 0.2
-1 0 -1 0.5 dielectric 1.5
-1 0 -1 -0.45 dielectric 1.5
MIT License - See LICENSE file.