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Re: a vote for rotation

From: Martin J. Dürst <mduerst@ifi.unizh.ch>
Date: Wed, 26 Nov 1997 12:38:04 +0100 (MET)
To: Chris Lilley <Chris.Lilley@sophia.inria.fr>
cc: Space Cowboy <spacecow@mis.net>, www-style@w3.org, w3c-css-wg@w3.org
Message-ID: <Pine.SUN.3.96.971126123558.282P-100000@enoshima.ifi.unizh.ch>
On Tue, 25 Nov 1997, Chris Lilley wrote:

> On Nov 25,  3:08pm, Space Cowboy wrote:
> 
> > While it's probably quite complex and a little complicated to deal with,
> > wouldn't it be nice if you could have a rotate property in CSS? Even if
> > it's only the cardinal points (0, 90, 180, 270 degrees), I think it
> > would be a real boon to pages.
> 
> There are clearly lots of uses of rotated text in print publication and in
> "pictures of text" on the Web. The question then becomes, can this be fitted
> into the model used by CSS and what is the implementation effort (both
> directly and in terms of "what breaks if this is added".

There are quite some connections between vertical text, arbitrary text
directions, and rotated text. I propose that we discuss this in
this context in CSS 3.

> > and rendering raster images is very complicated,
> 
> It can be fairly simple - for a pixel replication method, iterate over
> every pixel in the destination image and transform back to the original
> image to locate the nearest pixel; color destination pixel same as source
> pixel.
> 
> For higher quality yes, it gets complicated since a proper subsampling
> method will always generate a truecolor image even if the original image
> was palettized - a problem on platforms with limited color capability
> such as the grossly inadequate but surprisingly common 256 color displays.

Well, more and more this is done with hardware support.
It's called "textures" :-).



Regards,	Martin.
Received on Wednesday, 26 November 1997 06:38:57 GMT

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