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What is The Correct Name for This Shape?

PostPosted: Sun Oct 25, 2020 4:45 pm
by DaveyBoy
The forum has been very quiet recently . . I hope everyone is ok!

Does anyone know the correct geometric name for this shape:

Image

A google search of 'Curved Stadium', 'Curved Obround', 'Curved Arch', 'Bent Sausage' and the like doesn't yield any results, so I thought I'd ask the collective brains of the forum :D

If it doesn't have a proper name then maybe we could give it one!

Cheers in advance
Dave

Re: What is The Correct Name for This Shape?

PostPosted: Sun Oct 25, 2020 5:56 pm
by martinvicanek
Thick arc (or arch?) with round ends?

Re: What is The Correct Name for This Shape?

PostPosted: Sun Oct 25, 2020 6:20 pm
by trogluddite
I don't know of any simple name for it from geometry, engineering drawing, or machining. It's a kind of convolution - everywhere touched by a circle moved along an arc. If I were machining it, I'd probably say a "radiused arc" - but if someone else said that, I'd want to see a drawing to be sure what they meant!

DaveyBoy wrote:If it doesn't have a proper name then maybe we could give it one!

Spogg's probably your man for that, as he's great at suggestive names for things. I guess it's a bit mean of me to pass him the problem, but from the look of it, it doesn't seem to be too... erm,... hard. :shock:

Re: What is The Correct Name for This Shape?

PostPosted: Sun Oct 25, 2020 7:57 pm
by juha_tp
"Nakki" in finnish (wiener or frankfurter in english). :lol:

Re: What is The Correct Name for This Shape?

PostPosted: Sun Oct 25, 2020 10:11 pm
by guyman
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Re: What is The Correct Name for This Shape?

PostPosted: Sun Oct 25, 2020 10:13 pm
by guyman
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Re: What is The Correct Name for This Shape?

PostPosted: Sun Oct 25, 2020 10:51 pm
by guyman
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Re: What is The Correct Name for This Shape?

PostPosted: Sun Oct 25, 2020 10:52 pm
by DaveyBoy
Thanks for the suggestions so far guys . . .

trogluddite wrote: but from the look of it, it doesn't seem to be too... erm,... hard.


Trog . . your humour never fails to amuse :D

Martin . . looks like you are correct, Guyman's suggestion of 'rounded edge arc' does get a few Google results, but is this the correct geometric term?

guyman wrote:How can we make this shape?


Like so:

Multi Sausages v3.0.6.fsm
(2.58 KiB) Downloaded 206 times


This is very much a work in progress so if anyone is interested I will update when finished.
I'm just drawing arcs at the moment but I am intending to change to Graphics Paths so they can be filled with colour.

The reason for this project is that I need draw a fan opening/vent for a job at work (it has to be this design) and the drawing program I normally use (Visio) doesn't support auto generation of radial objects (as far as I know), so my plan is to draw it with Flowstone and save as bitmap, which can then be imported to Vsio.

Keep the suggestions coming Guys . . I'm favouring Frankfurter or Sausage at the moment :D

Re: What is The Correct Name for This Shape?

PostPosted: Sun Oct 25, 2020 10:58 pm
by guyman
Awesome @Daveyboy !
Forgive the spaghetti string inside the module, just a rush job.
I have more ideas and I'm about to get something to sip on and dive in.

Re: What is The Correct Name for This Shape?

PostPosted: Sun Oct 25, 2020 11:42 pm
by deraudrl
DaveyBoy wrote:I'm just drawing arcs at the moment but I am intending to change to Graphics Paths so they can be filled with colour.

I suppose just drawing an arc segment with a really wide brush and round endcaps is too easy...if you need just the outline, draw a second one slightly shorter/narrower in the background color.

(I'm pretty sure you can do that in Paint and export as a metafile, which Visio should be able to import...certainly works that way in CorelDraw.)