An implementation of a ray tracer based on the "The Ray Tracer Challenge" book in Ruby.
This uses Jetlify's devbox, so you'll need to install that first.
See devbox.json for details on what is installed.
devbox shellbundle install
ruby rayz.rb
cucumber
standardrb
Generate signatures for new class: typeprof lib/class_name.rb > sig/lib/class_name.rbs
Type check with steep check
The canvas is a grid of pixels. The grid is defined by the number of rows and columns. The rows are the Y axis and the columns are the X axis. The origin is the bottom left corner of the grid. The X axis increases to the right and the Y axis increases up.
R(y) . . . 3 2 1 0 1 2 3 ... C (x)
A projectile is shot and the position is reported until it hits the ground.
Position at tick 000 -> X: 0.707 Y: 1.707 Z: 0.000
Position at tick 001 -> X: 1.404 Y: 2.314 Z: 0.000
Position at tick 002 -> X: 2.091 Y: 2.821 Z: 0.000
Position at tick 003 -> X: 2.768 Y: 3.228 Z: 0.000
Position at tick 004 -> X: 3.436 Y: 3.536 Z: 0.000
Position at tick 005 -> X: 4.093 Y: 3.743 Z: 0.000
Position at tick 006 -> X: 4.740 Y: 3.850 Z: 0.000
Position at tick 007 -> X: 5.377 Y: 3.857 Z: 0.000
Position at tick 008 -> X: 6.004 Y: 3.764 Z: 0.000
Position at tick 009 -> X: 6.621 Y: 3.571 Z: 0.000
Position at tick 010 -> X: 7.228 Y: 3.278 Z: 0.000
Position at tick 011 -> X: 7.825 Y: 2.885 Z: 0.000
Position at tick 012 -> X: 8.412 Y: 2.392 Z: 0.000
Position at tick 013 -> X: 8.989 Y: 1.799 Z: 0.000
Position at tick 014 -> X: 9.557 Y: 1.107 Z: 0.000
Position at tick 015 -> X: 10.114 Y: 0.314 Z: 0.000
Position at tick 016 -> X: 10.661 Y: -0.579 Z: 0.000
Projectile hit the ground after 16 ticks.
A projectile is shot and the position is reported until it hits the ground. The path of the projectile is plotted on a canvas.
Run example:
ruby rayz.rb && cp projectile.ppm /mnt/c/Users/craig