[HN Gopher] Perfect Circle
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       Perfect Circle
        
       Author : gohwell
       Score  : 80 points
       Date   : 2023-01-06 20:38 UTC (2 hours ago)
        
 (HTM) web link (neal.fun)
 (TXT) w3m dump (neal.fun)
        
       | revskill wrote:
       | Please draw for me perfect circle first for me to follow ?
        
       | bjt2n3904 wrote:
       | Really fun distraction. Seems like I'm training an AI how to
       | differentiate between bots and humans though...
        
       | Waterluvian wrote:
       | There's a mini game in Mario Odyssey about walking a perfect
       | circle. This reminds me of that. It's charming.
        
       | dajonker wrote:
       | This is fun and had a high potential for giving me some
       | repetitive strain injury. My highest score of 97.1 doesn't
       | visually feel like the best circle I've drawn though.
        
         | mgdlbp wrote:
         | Its ideal circle is centred on the dot
        
       | Tevias wrote:
       | Also interesting to try to get low percentages. Worst I could get
       | was 53.1% by drawing a rectangle over my whole screen.
        
         | FranchuFranchu wrote:
         | I got 20% by drawing an ellipse
        
           | bmacho wrote:
           | I got 2.6 for starting close, then circling a big circle,
           | like this https://pasteboard.co/vYFY7MSrgcoD.png
        
         | mgdlbp wrote:
         | 2.7% by starting the rectangle close to the dot (it measures
         | deviation from the initial radius)
        
       | hnkimo wrote:
       | Try to keep the radius as small as it lets you. Move very slowly,
       | you'll likely be too slowly the first few tries but find the
       | slowest speed possible. I got 97.3% with a mouse doing this.
        
       | sam33r wrote:
       | This was fun! It seems like the faster I go, the better the
       | median score gets. My finger on a phone beat my vertical mouse
       | (as I expected), but not by much: 95.8% vs 93.5%.
        
       | stjo wrote:
       | An even better challenge: try to draw the least circle-like
       | thing. It is surprisingly hard!
        
       | tomovo wrote:
       | A nice square gets me 77%. Good enough for me.
        
       | scandox wrote:
       | Thumbs superior for some reason
        
       | chairmanwow1 wrote:
       | Drawing a triangle resulted in a score of 77.9?
        
       | alexmolas wrote:
       | Supercool!! it would be nice to see how do you rank with respect
       | to other users, and see your percentile.
        
       | martyvis wrote:
       | Fun, but needs more rewards than just a high score. Maybe
       | something like a consecutive streak above 90%? Or a challenge
       | where you need to target a given radius. Anyway, nice job.
       | 
       | (I recall how my senior hugh school maths teacher was wizz at
       | drawing circles, lines and other geometry on the chalkboard)
        
       | yabones wrote:
       | This is basically impossible with a trackball mouse :)
        
       | zamadatix wrote:
       | As a tip: what it's really checking is for a circle centered on
       | the dot in the middle with the radius equal to your initial
       | click's distance from the center. You could make a mid sized
       | perfect circle which is slightly off the center of the dot and
       | lose to a square that fills the play area.
        
         | [deleted]
        
         | pstorm wrote:
         | I was wondering why some circles seemed great but got low
         | scores. To test your tip, I just made a square and got 92%
        
           | dxbydt wrote:
           | My anticlockwise circles score more than my clockwise ones.
           | Is there some theory behind that ?
        
       | fishtoaster wrote:
       | I've managed to get 97%, but only by busting out my ipad and
       | using the stylus. A fun little game!
        
       | blank_fan_pill wrote:
       | All these little apps are really impressive from a web
       | development point of view. Shows a real mastery of css, canvas,
       | browser apis, JS, etc. Kudos.
        
       | ynfnehf wrote:
       | By cheating with a Python script to move the mouse, I managed to
       | get 99.9%. Seems difficult to get higher than that, perhaps due
       | to the mouse position having integer coordinates.
        
         | dmix wrote:
         | A mac or windows app controlling the mouse I presume?
        
         | majkinetor wrote:
         | I literray came here to see who is going to proclaim automation
         | first (and in what way) :) Unsurprinsingly, it was the first
         | comment.
         | 
         | 100% perfect circle is a pure math thing and can't be achieved
         | with drawing in any way.
        
       | limaoscarjuliet wrote:
       | Surprisingly entertaining!
        
       | dxbydt wrote:
       | Hey this is so well done! You know, you could put the sun on one
       | of the the two focii and ask the user to draw the elliptical
       | orbit of the earth - perfect real-life usecase.
        
       | michael9k wrote:
       | Cool. Actually harder than I thought
        
       | ehsankia wrote:
       | Another great neal.fun page. One feature I'd like to see is, make
       | the user to N circles in a row and take the median score or
       | something. Right now you can just spam hundreds and take your top
       | score, but it doesn't really reward consistency.
        
         | majkinetor wrote:
         | Yeah, we all totally need consistency reward. The game will
         | become borring without it :)
        
       | gerdesj wrote:
       | One of my maths teachers was able to draw up to something like a
       | three foot circle on the blackboard that looked very, very close
       | to ideal every time. He would always use two arcs to do it and it
       | was uncanny. He would whip out a metre/yard rule to do straight
       | lines because they are much harder to do.
       | 
       | Your limbs etc are all a collection of ball and socket/downright
       | weirdly jointed/hinges with benefits/more weirdness. You then
       | want to use this monstrose agglomeration (did I mention how you
       | move the bloody things?) to draw a circle? Obviously you would
       | decide to run a finger over a simulator of a lump with a ball in
       | it and some on/off switches.
       | 
       | People are weird. Nice website though.
        
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       (page generated 2023-01-06 23:00 UTC)