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I drew this shape, the sort of thing that one might well find used as a beer bottle label.
Two things, does it have a name? It's not a circle or an ovoid, but some clever person on the forum might know and share their knowledge.
Secondly, you wouldn't believe how difficult it is to draw precisely, despite using Xara's guides and snapping.
The hardest part was adding a line to the shape that did not show that I'd used three shapes in making this thingy.
Bob.
I don't know of an agreed term that is particular to this shape. I would describe it as 'capsular' or 'capsule-like'.
That's the best I could come up with too. I uploaded the shape to google images but it returned no results. I'll try Tin Eye and see if they have anything.
Bob.
I just searched Tineye and got Your image is too simple to create a unique fingerprint.
Bob.
Hi, see the following link, they call it a stadium https://owlcation.com/stem/Names-of-...l#slide8304660
Ciao
Roly
it is an oval in geometric terminology - ovals can have straight parallel sides - the criteria for oval is that it is oblong-shaped but has no pointed corners
You could also look on it as being a segment of a 3D sphere [truncated]... I have seen it described mathematically as a 'truncated circle'...
I think we're looking for a more precise term - Oval is to Capsule, as Rectangle is to Square kind of thing.
You play/follow cricket?
no - it is an oval - the perfectly symmetric [in one plane] 'egg shape' is a special case [not that real eggs are perfectly symmetric] - if you want to look for a special name it should be the special case that has one, oovoid maybe?
We're looking for the special case where an Ovoid has two, and only two, straight edges opposite each other..
oval as opposed to ellipse - will that do?
Doesn't look like we have a choice..
hey - you can call it anything you like for me - but Bob asked what the shape was called - now I am not particularly clever, but I am sure of my maths.. if you want to define it some other way be my guest :D
Maybe you aren't familiar with the term 'Boboid', symmetrical, straight on the vertical, curved on the horizontal, a subset of the 'Ovoid' clan.
I read it somewhere..
They forgot to mention the 'Boboid'.
I think stadium fits the bill rather well, unless it's The Caketin stadium in Wellington NZ.
Bob(oid)
Hi Bob.
I'm not sure what you mean, when you say "...you wouldn't believe how difficult it is to draw precisely..."
I drew it in a couple of minutes.
Am I missing something, that I've not understood?
Why wouldn't you use a rectangle with curved corners ... i.e. Rectangle 10 x 15 with corners with a 5 radius. Unless I'm missing something too.Quote:
Originally Posted by iamtheblues
@Keith, well it just shows how dim I can be, the rounded rectangle option never entered my head! :o
@Rik, it's obviously me, I had difficulty aligning the shapes I kept getting unwanted lines as a result. :o:o
@Steve & Paul, I think that "Lozenge" also describes the shape, yes?
Bob.
Just to add to the mix - a superellipse - http://mathworld.wolfram.com/Superellipse.html: Attachment 113067 with r > 2.
Here a=1, b=1.5 and r=3.5: http://www.wolframalpha.com/input/?x...%3D1.5+r%3D3.5
Danish mathematician Piet Hein heavily used it and had a superellipsoid dubbed the Superegg.
Acorn
now I can really empathise with a 'squircle' :D
lame curves I've come across before... and they can be called lame ovals too, indeed why not...
nice links acorn, thanks
@Bob or tablet... can you get ten items onto it perchance...? :)
I think Roly is correct about it being a stadium shape. A short one, so does that make it a special case? Anyway it is for sure not a capsule shape because a capsule is a 3 dimensional shape.
does that make it a special case?
Larry are you suggesting that Bob(oid) is NOT a special case?
No, that is a special case too. But are we coining a term for that particular shape to be called from now on a Boboid? Not a bad idea. In fact I like that. Bob will now be famous by virtue of having a special shape named in his honor.
Anyway it is for sure not a capsule shape because a capsule is a 3 dimensional shape
since when has a stadium not been 3D ? - greyhound circuit track would be closer [to the ground]
A stadium may be 3D, but a Boboid is 2D..
you do realise that the suffix 'oid' refers the shape characteristic, as in 'ovoid' and not the shape itself as in 'oval' [for example]
so even if the shape in question is a 'boboid' that still leaves open the question of what particular boboid it is.... :p
[isn't this where we came in....]
Stadium shape is 2D, but, capsule shape is 3D or stadium of revolution. It is a basic three-dimensional geometric shape consisting of a cylinder with hemispherical ends.
Larry, a 2D stadium wouldn't be popular but cheaper to build. Baseball fans would not want a 2D stadium.
Good points handrawn. Still I think Stadium should be about right, although I do like the term Boboid meaning a short stadium shape, which in my opinion is what Bob is showing.Quote:
Originally Posted by handrawn
I would say it's a fat cursus - the thing Ben Hur nearly died charioting round - which originally was the surround of a stadium [which was straight].
My tuppence worth :D
cursus - of course ! [:D]
now why didn't I think of that... cogito ergo dumb
Hi, just to keep the ball rolling, alternative names to stadium are discorectangle and obround, see the following link https://en.wikipedia.org/wiki/Stadium_(geometry)
Ciao
Roly
Boboid means resembles a Bob. I just hope Bob isn't this shape.
Acorn
I couldn't get roly's link to work but this does. https://en.wikipedia.org/wiki/Stadium_(geometry). So according to this would it be called an obround.