[sartakdotorg]

You didn't read very carefully if you missed that everything was interactive.

"Today, I will show you how to make something like this: (move your mouse around in the box below)"

"The demo below just draws a bunch of line segments and tracks your mouse position."

"Here's what all that math looks like: (move your mouse over the box)"

[forrestthewoods]

You are correct. I did not read very carefully. Thank you for pointing that out. I focused on the pretty pictures before reading all of the text. I can say with extreme confidence that I am not the only person who made the mistake of not reading carefully so I thought it worthwhile to mention.

[richforrester]

Some of us only skim articles.

It's not a sin.

[sartakdotorg]

Agreed. But given the rest of forrestthewoods's post I thought it was worth pointing out.