Re: NSImageView setImageScaling:NSScaleToFit blurs image

FROM : R.L. Grigg
DATE : Tue Mar 04 21:02:35 2008

Mike, yes that is something we tried but it seems to have no effect 
on the blurring.
Thx,
Russ

On Mar 4, 2008, at 11:52 AM, Mike Abdullah wrote:

> When you draw the image, have you tried doing [[NSGraphicsContext 
> currentContext] setImageInterpolation: NSImageInterpolationNone] ?
>
> Mike.
>
> On 4 Mar 2008, at 19:13, R.L. Grigg wrote:
>

>> I have a series of tiny (32x32) PGM image astronomical IR data in 
>> memory that I display on screen zoomed up to 640x640. Right now Im 
>> using a NSImageView and setImageScaling:NSScaleToFit. This works 
>> but some sort of gaussian blur gets applied to the image ruining 
>> the analysis.
>>
>> Is there a setting to turn off this default blur or is there 
>> another way I can zoom display a small image (QCView?) but without 
>> the blur? The net effect of what we need is a sharp pixellated 
>> image not one where the pixellated block edges are smeared.
>>
>> OSX 10.5.2, Xcode 3.0, ObjC 2.0
>>