This is a ray tracing implementation in Go.
All implementation was translated from the minibook Ray Tracing In One Weekend. The book opted for C++, but I figured a good way to both practice Go as well as learn ray tracing would be to go through the minibook, without copying and pasting. Writing in Go is a good way to motivate me to read through the book.
Be sure to have Go installed. Then, from this directory, just run:
go run . > image.ppm
The program outputs portable pixmap format to the console/stdout, and so, the > symbol writes the output to a file.
Rendering a whole 1024 by 576 image takes around 10 minutes my 2019 M1 MacBook Pro. If you want something rendered quicker, change the nx and ny variables in main(), in main.go to something smaller than 1024 by 576 (perhaps 200 and 100, respectively).