Bugs item #3046269, was opened at 2010-08-16 15:16 Message generated for change (Comment added) made by zmoelnig You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=507079&aid=3046269...
Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: documentation Group: any operating system
Status: Closed
Resolution: Fixed Priority: 5 Private: No Submitted By: Nobody/Anonymous (nobody) Assigned to: Nobody/Anonymous (nobody) Summary: rectangle inlets/args set HALF width and height
Initial Comment: Either the description in the help patch or the behaviour of [rectangle] is wrong:
inlet 2: float: width (default to 1) <-- should say "half width" inlet 3: float: height (default to 1) <-- should say "half height"
The rectangle's width and height are actually TWICE the numbers set with the inlets or arguments
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Comment By: IOhannes m zmlnig (zmoelnig)
Date: 2010-08-22 20:12
Message: matju, i admire the canadian school systems, where kids in elementary school learn words like "apothema".
since i expect some austrian users who have skipped their highschool math as well, i would prefer to not resort to such complicated words.
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Comment By: Nobody/Anonymous (nobody) Date: 2010-08-16 16:56
Message: what i learned in elementary school is that the "radius" of a regular polygon is the distance from centre to a vertex, as in [polygon], whereas the "apothema" of a regular polygon is the distance from centre to a mid-edge, like [square]. thus, in polar, r(a) a function whose minima are called apothema and maxima are called radius. similar concepts can apply to rectangles and such.
i would natually use words "half-width" and "half-height" for [rectangle] and [square], but to refer to them collectively, i definitely would choose the word "apothema" over the word "radius" (the latter should refer to the half-diagonal instead).
--matju
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Comment By: Matteo Sisti Sette (sistisette) Date: 2010-08-16 15:57
Message: Yes I guessed the behaviour was the expected one. It's true that this apply to almost all other geos; documentation should be clearer about that.
I notice in some cases the word "size" is used which can be pretty ambiguous (what's the size of a cylinde?). For a sphere, I'd rather use the word "radius" ("size" strongly suggests the diameter)
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Comment By: IOhannes m zmlnig (zmoelnig) Date: 2010-08-16 15:24
Message: this is for design and for legacy reasons. i have added a note in rectangle-help.pd with rev.3452
note however, that this applies to virtually any Geo in Gem.
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Comment By: Matteo Sisti Sette (sistisette) Date: 2010-08-16 15:20
Message: Sorry it was me who submitted the issue; I thought I was logged in.
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You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=507079&aid=3046269...
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