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Show HN: Test your shape rotation skills

0xf00ff00f.github.io

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Re: Show HN: Test your shape rotation skills

#51

Post by sudosysgen »

eternityforest wrote: post #45

I'm amazed that some people can actually rotate objects. On of the reasons I don't drive is for fear of driving directly into traffic, if I make a mistake figuring on which lane is "on the right side" of the new perspective when turning. Mental rotation is one of the very top causes of mistakes for me and I've learned to always be on the lookout for it, and assume my conclusion is wrong if I find myself doing it.

In the end I found it way better to not rotate the shapes but use my intuition to match pairs then verify by counting squares and checking chirality. Actual rotation takes me like 10-15 seconds but the intuition+check technique is more like 4-5 seconds.

Re: Show HN: Test your shape rotation skills

#52

Post by KaoruAoiShiho »

sudosysgen wrote: post #49
KaoruAoiShiho wrote: post #46

Earlier quoted context omitted.

It's a 4chan meme: https://knowyourmeme.com/memes/cultures/wordcel-shape-rotato... So this game going to the top of HN is likely part of the meme where shape rotators strike back against wordcels after wordle became popular, something like that.

It's actually a Twitter meme by @tszzl on Twitter. It was a 4-chan meme to add "-cel" to words, but the shape rotator vs wordcel meme is from Twitter.

You should read the article

Re: Show HN: Test your shape rotation skills

#54

Post by sudosysgen »

KaoruAoiShiho wrote: post #52
sudosysgen wrote: post #49

Earlier quoted context omitted.

It's actually a Twitter meme by @tszzl on Twitter. It was a 4-chan meme to add "-cel" to words, but the shape rotator vs wordcel meme is from Twitter.

You should read the article

I did despite my better judgment. The 4chan part is just adding "-cel" to words and doesn't form a direct lineage to the modern meme.

Re: Show HN: Test your shape rotation skills

#57

Post by 0xf00ff00f »

blamestross wrote: post #44
0xf00ff00f wrote: post #31

Earlier quoted context omitted.

Ouch. Thank you so much for noticing this! Looks like I need a more robust test.

Ismorphism is hard to detect, even in reduced spaces. Really hard in arbitrary graphs. For a "fast filter" generate the center of gravity for each (just the average of the voxel points as doubles) and abs+sort the resulting vector and assume they match if the "Sorted Cog Vector" matches. It will have false positives sometimes but no false negatives.

Great suggestion, thanks!

Re: Show HN: Test your shape rotation skills

#58

Post by TrianguloY »

amar-laksh wrote: post #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

Can someone post that rotating puzzle post from yesterday? I think I missed it (and can't seem to find by searching)
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