Re: NSImage scaling and data loss
Re: NSImage scaling and data loss
- Subject: Re: NSImage scaling and data loss
- From: Robert Miller <email@hidden>
- Date: Wed, 11 Jul 2001 08:40:45 -0400
- Organization: RFM & Associates
Nope, tried that and it had no effect.
John Hvrnkvist wrote:
>
On Monday, July 9, 2001, at 09:04 PM, Robert Miller wrote:
>
>
> typically C,D, or E sized (8800 x 6800 pixels) stored as Group4 Tiff and
>
> using these images in an NSImage object. I am applying a scaling using
>
> an NSAffineTransform so as to zoom in and out on the image. As the image
>
> is zoomed out (shrunk in size) to show more of it within a view, there
>
> is significant data loss and the image becomes indisguishable. The same
>
> images do not produce this problem in a Carbon version using CopyBits.
>
> Is there a way to be able to shrink a large image with scaling so that
>
> there is a minimal loss of data and the reduced image still looks OK
>
> using Cocoa ?? Any help would be greatly appreciated.
>
>
I think this is resolved if you tell the image to retain its initial
>
data;
>
[theImage setDataRetained:YES];
>
>
Regards,
>
John Hornkvist
>
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>
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>
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