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Show HN: Test your shape rotation skills

0xf00ff00f.github.io

11–20 of 210 posts

Re: Show HN: Test your shape rotation skills

#12
Sometimes the initial rotation hides a part of the shape.

Also, I have always wondered if there's a way to translate these shapes to strings for quick "mental algorithm" matching. Something like, "5, left turn, 3, right turn..."

I guess you'd need a normal form. The first turn can be defined as always "right" or "left," and subsequent turns can be right, left, up or down. The first turn that's "up" or "down," can be defined as "up." That leaves two ways to read any shape, but that's an uhh constant-factor overhead. :)

(I can't think of a way to define a normal form reading direction that wouldn't involve potentially reading an arbitrary distance in before having to re-start the other way.)

Re: Show HN: Test your shape rotation skills

#14
This is brilliant! (Especially after the rotating puzzle post yesterday, exactly what I needed!) Thank you! (I managed to get 14 at 8 seconds but damn this is pretty hard)

feedback: Sometimes the shapes get too occluded by it's own body. Not sure bug or a feature. Also could be fun to increasing or decreasing difficulty curve depending on performance

Re: Show HN: Test your shape rotation skills

#16

This sounds interesting. Will it be available on mobile?

It should work on mobile browsers (though I haven't tested yet).

Tried on Android chrome. I select two shapes which I'm pretty sure match and nothing happens. The only thing on the screen is a "code" hyperlink. Is there supposed to be a "accept" or "go" button or something?

Re: Show HN: Test your shape rotation skills

#17
Damn, that's surprisingly difficult. But I think I shouldn't be allowed to brute-force answers (that's really tempting in the current design) and I'd probably appreciate if shapes were standing still, since the movement is distracting and barely relates to the skill being tested.

Re: Show HN: Test your shape rotation skills

#18

This sounds interesting. Will it be available on mobile?

It should work on mobile browsers (though I haven't tested yet).

Seems to have an issue in Safari on iPad - there’s no way to submit my guess. The shapes highlight but then nothing happens. The timer just keeps running. I’m pretty sure I’ve selected correctly.
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