| From: | Rune Zedeler |
| Date: | 3 Jul 99 at 21:50:30 |
| Subject: | Re: [amos-list] Seemingly easy task... |
From: Rune Zedeler <rune@zedeler.dk>
On 02-Jul-99, Rune Zedeler wrote:
> Sqr((x+1)�+y�) - r > r - Sqr((x+1)�+(y-1)�)
>To get rid of the square roots we multiply all parts with them selves:
> ((x+1)�+y�) - r� > r� - ((x+1)�+(y-1)�)
>Notice that the 2 inequations are not exactly the same - but they are very
>close when the numbers are close to each other.
I made a test.
The smallest radius on which the two routines do not do exactly the same is
2051.
That is: If your circles has smaller radii than 2051 then the two routines
make identical circles.
If your circles are getting bigger then a few pixels now and then will be
different.
/�\ __ __ /�����\ _ Rune Zedeler
________/ /// \\__/ \\\ ---/ \�-_ Rydev�nget 3,3th
\ / //�| \\/ ||�\ \\�������������� �-_ 8210 �rhus V
) / // | \ ` / || \ \\ Lemmus of Efreet - Denmark
/ / �����\\|\-'/ /����� \\____________ _-�
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