Now your computer can get them too!
Allergy Warning: May contain easter-eggs
$ go install github.com/paul-nelson-baker/the-spins@latestIn your terminal run the-spins, to exit simply hit CTRL+C or ESC
- youtube-dl (optional)
- ffmpeg (optional)
$ make audio/spin-loop.mp3 installI've been teaching myself how linear algebra works. Just as a proof of concept, I wanted to move a point about an axis on the screen. Frustrated with all the incantations I had to cast to get a simple proof of concept to work in OpenGL, I decided to utilize... the mouse!
The mouse can be considered a vector in space because any point X and Y can be interpreted as a vector.
So what we do, take an arbitrary point P_arb and decide it's X and Y value are 75 and 75
respectively. We now take this point and rotate it by Theta, which we increment everytime
our main loop iterates. So now we have a point rotating about the axis, but this won't work
for our computer screen because the origin is in the top-left corner and we cannot move to
a negative position when P_arb has left Quadrant I. We now translate P_arb by another
vector P_midScreen which is a vector with X and Y values that are half the width and height
of the screen.
This occurs inifinitely until the user hits CTRL+C or ESC to exit