64
Circles do not exist (nibblestew.blogspot.com)
submitted 1 week ago by [email protected] to c/[email protected]
top 16 comments
sorted by: hot top new old
[-] [email protected] 53 points 1 week ago

Okay but raster images can't represent circles either, since they're just approximations using squares

[-] [email protected] 27 points 1 week ago

And many "circles" aren't circles either, but 2D torus approximations. The edge of a true circle is made of infinitesimally small points so would be invisible when drawn. And even if you consider a filled circle, how could you be sure you aren't looking at a 1-torus with an infinitessimally small hole? Or an approximation of all the set of all points within a circle?

Clearly, circles are a scam.

[-] [email protected] 18 points 1 week ago

A 1-torus is a circle, you mean an annulus. You do NOT want to make this mistake at a topologist dinner party, trust me.

[-] [email protected] 4 points 1 week ago* (last edited 1 week ago)

Damn, so what's the name of the shape that's a flat donut with an inner and outer circular perimeters? i.e. a filled circle with another smaller radius circular area subtracted from it. Or 2D cross section of a torus seen perpendicularly to the plane that intersects the widest part of the torus. A squished donut, or chubby circle, if you like.

[-] [email protected] 3 points 1 week ago
[-] [email protected] 2 points 1 week ago

Hah he said annulus

[-] [email protected] 4 points 1 week ago

Damn you PDF, damn you to heck!

waves fist at cloud

[-] [email protected] 38 points 1 week ago

Well I'd argue vector image can represent a real circle but what's on the screen will never be one.

Also why is this on Lemmy Linux?

[-] [email protected] 1 points 1 week ago

There are analog vector displays.

[-] [email protected] 2 points 1 week ago

Ah yes indeed but there must be some imperfections down the line so not a Real circle, though we are getting closer.

[-] [email protected] 5 points 1 week ago

In this sense, we don't have real rectangles or lines, either

[-] [email protected] 5 points 1 week ago

So what I'm learning is nothing is real...

[-] [email protected] 4 points 1 week ago

It's all cake.

[-] [email protected] 36 points 1 week ago

Titles like this annoy me. If you have something interesting to say - which is the case here - say what it is. No need to obfuscate the topic. It wastes time for everyone.

Anyway, it's kinda hilarious that the only way to make a proper circle in PDFs is with line caps. What a bizarre format. I hope it's succeeded by something better sooner rather than later, I can't think of any time they haven't been a pain to work with.

[-] [email protected] 10 points 1 week ago

What a bizarre format.

You should have seen my face when I discovered that it even supports 3D graphics, but you can probably count the functional readers on your fingers... and they're all proprietary.
Honestly not surprised, PDF feels like a taped together format that is at the whims of Adobe, supporting all those exotic features would be hell and I would not want to be in the position of the person who takes care of that. At this point it feels like a shittier website without responsiveness

[-] [email protected] 6 points 1 week ago

I've been saying this for years! If properties of a shape cannot be expressed with finite precision then how can that shape exist in a universe with clunky restrictions like the planck length?

this post was submitted on 09 Sep 2023
64 points (73.2% liked)

Linux

5 readers
209 users here now

From Wikipedia, the free encyclopedia

Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).

Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.

Rules

Related Communities

Community icon by Alpár-Etele Méder, licensed under CC BY 3.0

founded 4 years ago
MODERATORS