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My anticlockwise circles score more than my clockwise ones. Is there some theory behind that ?
Might have something to do with the mechanics of your shoulder. Particularly if your hand is in the air, counterclockwise feels more natural than clockwise. Or at least, for your right arm. What happens if you repeat the experiment with your left hand?
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I was wondering why some circles seemed great but got low scores. To test your tip, I just made a square and got 92%
My anticlockwise circles score more than my clockwise ones. Is there some theory behind that ?
Have you tried switching hands and starting from the bottom?
It was a blast to learn how to do things in canvas and as an exercise, a very fun little app to build. I'm not sure how the OP is measuring perfection of the circle, but in mine it was standard deviation of every drawn point around the centre of the page.
I encourage people to try to scaffold something like this together in canvas/JS sometime. Very fun project!
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Throw a compass into the mix and you'll get close enough. But you like, fall off the grid man.
Are you trying to square a circle? We don't tolerate that witchcraft around these parts. Now git.
Choose a corner and truncate, measure the edge length using a compass, and use that to draw the rest of the owl.
You can do it, but you end up with horizontal and vertical edges that are misaligned with the grid.
And I saw the opportunity to make a bad joke.
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.
javascript:(function()%7Blet%20s%3Ddocument.querySelector(%22main%20svg%22).getBoundingClientRect()%2Ccx%3Ds.width%2F2%2Bs.x%2Ccy%3Ds.height%2F2%2Bs.y%2Cr%3Ds.width%2F3%2Cd%3Ddocument.querySelector(%22main%20div%22)%2Ca%3D0%3Bfor(let%20e%3D0%3Be%3C50%3Be%2B%2B)%7Ba%2B%3DMath.acos(1-Math.pow(60%2Fr%2C2)%2F2)%3Blet%20t%3DMath.round(cx%2Br*Math.cos(a))%2Cn%3DMath.round(cy%2Br*Math.sin(a))%3B0%3D%3De%26%26d.dispatchEvent(new%20MouseEvent(%22mousedown%22%2C%7BclientX%3At%2CclientY%3An%7D))%2Cd.dispatchEvent(new%20MouseEvent(%22mousemove%22%2C%7BclientX%3At%2CclientY%3An%7D))%7Dd.dispatchEvent(new%20MouseEvent(%22mouseup%22))%7D)()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.
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.…
Cool! Not to self-promote (no monetization or anything), but in case any one finds it helpful, I made something similar for myself to practice becoming more accurate with Wacom-style tablet pens: https://tabletpractice.arkt.is/