EnigmA Amiga Run 1995 November/EnigmA AMIGA RUN 02 (1995)(G.R. Edizioni)(IT)[!][issue 1995-11][Skylink CD].iso/earcd/program/amos/amoslist.lzh/AMOSLIST/[e-mail]_Tue Sep 26 11:44:49 1995.msg

Internet Message Format | 1995-10-02 | 4KB

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Date: Tue, 26 Sep 95 17:25:51 GMT
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In-Reply-To: <Pine.HPP.3.91.950926095107.8381B-100000@mpih17>
             (from Branko Collin <[e-mail]>)
             (on Tue, 26 Sep 95 09:57:39)
Lines: 46
X-Mailer: ADMail 1.5 Copyright 1995 S.T.Brown
From: [e-mail] (Ben Wyatt)
To: [e-mail]
Subject: Re: Help me!
Status: RO
X-Status:

Greetings Branko, you wrote some text on the subject Re: Help me!, and now
I'm going to answer it.

BC> > M> I have to solve a problem in AMOS Pro programming: is there anyone who can
BC> > M> help me??
BC> > M> I explain the problem.
BC> > M> I must (or better, I want to) do a procedure to draw on a screen a part of
BC> > M>
BC> > M> a
BC> > M> circle. Is there any extension to do it??
BC> > M> Otherwise I have to use sin() and cos() function, but these are relly very
BC> > M> slow.
BC> > M> The procedure should be like:
BC> > M>
BC> > M> Procedure PART_OF_CIRCLE[R,A,B]
BC> > M>      where R is the radius, A the value of the angle in degree
BC> > M>      and B is how many degrees the line is long
BC> > M>      (sorry for my English, can you understand me? :-(( )
BC> > M> End Proc
BC> > M>
BC> > M> Unfortunately, becouse of all the structure of the program, the screen is
BC> > M> in
BC> > M> Hi resolution, but you have just to use R/2 in the sin() part.
BC> > M> But the biggest matter is that the 0 degree must be at 12 o'clock, 90
BC> > M> degrees at 3 o'clock and so on in clockwise (instead the trig functions
BC> > M> work
BC> > M> in the other direction.).
BC>
BC> I missed the original message due to problems with our mail-system last
BC> night, so I'll answer to this post. The answer is simple. Yes, there does
BC> exist such a procedure, I wrote it, it's in the Procedure Library (v3.0 I
BC> believe) which can be downloaded from Aminet or Andy's website. It's
BC> called SimpleArc and the good part is that with bigger circles (i.e. an
BC> arc with 360 degrees length) it is faster than the Amos 'Circle' command!

I reckon mine would be faster with a big step (STP)

BC> The trick I used to make it faster is to build the arc from lines instead
BC> of single dots. If anyone feels like making it even faster, be my guest.

The only way of making it any faster is to use extension commands...

Bye  _________________________________
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    > Ben Wyatt - [e-mail] <
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