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Re: object2d rotation

To: REALbasic NUG <realbasic-nug at lists dot realsoftware dot com>
Subject: Re: object2d rotation
From: "Glenn L. Austin" <glenn at austin-home dot com>
Date: Fri, 30 Dec 2005 16:05:24 -0800
Delivered-to: realbasic-nug at lists dot realsoftware dot com
References: <20051229062942 dot CEACDF9818A at lists dot realsoftware dot com> <D9D85101-421B-41D3-B749-AE677404B41E at cantoberon dot it> <a06200714bfd9c29f280b at [10 dot 0 dot 1 dot 11]> <87E811A2-2BBB-4F98-A33B-B4F883EB1634 at mac dot com> <a06200716bfd9c9d9d9a3 at [10 dot 0 dot 1 dot 11]> <99B278AE-37A7-428E-8A1F-3537ED3D8088 at belle-nuit dot com> <a06200719bfda6840fac9 at [10 dot 0 dot 1 dot 11]> <A2BAFD0B-C6BC-476B-B24A-BFCBFDA3F88E at austin-home dot com> <9B9AFDE2-755D-4533-9089-11FCD4900DB3 at belle-nuit dot com> <1B073FEB-4704-4D2D-9D3F-91E80D46A4B6 at austin-home dot com> <621C90A4-4C0E-4F54-A7E8-EB3595D9803A at belle-nuit dot com>

On Dec 30, 2005, at 2:21 PM, Matthias Buercher wrote:

On 30 déc. 05, at 17:20, Glenn L. Austin wrote:

Ahh, but anti-aliasing improves the visual appearance of the edges in curves and the perceived poor quality.

Try it, you'll see a marked improvement in the appearance.

i use supersampling antialiasing since 1999 in belle nuit subtitler.
my point was that a vector-oriented graphics system must deal itself with all the transformations made in vector space and with the final rendering to the pixel space and if that is not done correctly, then supersampling is only a workaround. and this kind of antialiasing is also only an option for screen output, it looks very lousy on print. antialiasing is used because the raster is wider than the detail because there are not enough pixels, not because the rendering is not optimal.

I think that HP would take issue with "anti-aliasing looks very lousy on print" since their HRET is basically based upon that process.

Vector graphics are only as good as the renderer and the options sent to it. Once you get to pixels, then AA helps the final output.

Does this mean that the renderer is "broken?" Perhaps, but I would think that any closed curve that can be described in polar space would have an adequate appearance at 360 segments unless the curve is significantly large (and the definition of that, my friend, is left to the individual).

--
Glenn L. Austin <><
Computer Wizard and Race Car Driver
<glenn at austin-home dot com>
<http://www.austin-home.com/glenn/>

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