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List:       openjdk-openjfx-dev
Subject:    Re: Displaying pixel-perfect images without blur when zooming
From:       "Nico Krebs | www.mensch-und-maschine.de" <nicokrebs.dev () googlemail ! com>
Date:       2014-08-29 1:51:32
Message-ID: 53FFDCA4.9090900 () googlemail ! com
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Thank you Jim, Edu and Felipe for that quick solution :)

I will implement this solution and post a short report to this thread -
and to SO.

Nico

> Jim Graham <mailto:james.graham@oracle.com>
> 28. August 2014 23:14
> Hi Nico,
>
> snapshot can set a resolution in stone, but it doesn't - in and of
> itself - help with zooming that fixed resolution representation
> without antialiasing.  To get an aliased zoom of an image see the code
> that Felipe already posted in this thread.
>
> To be clear, to get an aliased, zoomed pixel preview you would:
>
> 1. snapshot a node tree at the scale you want to preview
>
> 2. then use Felipe's example code to get a nearest-neighbor aliased
> zoom of that snapshot
>
> When we offer filtering control on ImageView then the second part of
> that operation would no longer be necessary.
>
>             ...jim
>
>
> Jim Graham <mailto:james.graham@oracle.com>
> 28. August 2014 01:33
> We have no plans at all for implementing "pixel preview" as a setting
> on Shapes.  You can do that with snapshot if you want.
>
> The Shape.setSmooth() setting (currently stubbed out) is meant to
> control antialiasing, not rendering resolution.
>
> There should be similar bugs for Shape.setSmooth() and the lack of
> interpolation control on GraphicsContext.drawImage() methods as well,
> but I don't recall any Jira issues that deal with "pixel preview"
> capabilities (again, which can be achieved via snapshot)...
>
>             ...jim
>
>
> Edu García <mailto:arcnorj@gmail.com>
> 28. August 2014 00:36
> Thank you Nico and Jim.
>
> Also Jim, that issue only talks about ImageView IIRC. Are you going to
> implement something similar for shapes? I know it's not the same, but
> I wanted to show pixelated shapes as well (think about zooming in past
> 100% in Illustrator with pixel preview enabled). I don't keep my hopes
> up, but it's free to ask :).
>
>
>
> Jim Graham <mailto:james.graham@oracle.com>
> 28. August 2014 00:01
> On 8/27/14 1:04 AM, Nico Krebs | www.mensch-und-maschine.de wrote:
>> Question 1:
>> I don't know why setSmooth(false) doesnt work. Perhaps am i using it the
>> wrong way? I set it for each ImageView object i got in my list. the
>> scrollpane can`t be "unsmoothed" because of the lack of the setSmooth()
>> method.
>> On the other hand, it could just be a bug of JavaFX.
>
> I repeat:
>
> On 8/26/14 4:35 PM, Jim Graham wrote:
>> We simply haven't implemented this yet:
>>
>> https://javafx-jira.kenai.com/browse/RT-28629
>>
>>              ...jim
>
> setSmooth() is not hooked up to any mechanism at all.  Nothing
> examines this property in the implementation (to be clear, the FX
> object "passes it on" to the NG implementation object which receives
> it with an empty method body).  This is true of ImageView and of
> Shapes...
>
>             ...jim
> Nico Krebs | www.mensch-und-maschine.de
> <mailto:nicokrebs.dev@googlemail.com>
> 27. August 2014 10:04
> Hi Edu,
>
> short story: i built a very simple image file format: a zip file,
> containing a meta.xml file and several png images. the xml defines the
> position of each png in the image. this way i have a very basic
> layered image file. I built the first version with Swing in JDK 7 but
> switched to JavaFX8 last week. The swing-version workes and lets me
> see and manipulate single pixels when i zoom.
>
> Question 1:
> I don't know why setSmooth(false) doesnt work. Perhaps am i using it
> the wrong way? I set it for each ImageView object i got in my list.
> the scrollpane can`t be "unsmoothed" because of the lack of the
> setSmooth() method.
> On the other hand, it could just be a bug of JavaFX.
>  
> Question 2:
> i want to load the image with all it`s layers once and then be able to
> zoom so far that i can see the pixels (as you can do in photoshop or
> even paint). for example because i want to modify the image pixel by
> pixel (think of icons, gif animations and other tiny images)
>
> It`s an image manipulation tool for artists, who want to do very basic
> stuff like drawing single pixels, lines and do some effect magic. To
> be able to do precise image manipulation manually it is indispensable
> that you can work with the untouched image data. as you can in gimp,
> paint, photoshop,...
>
> i hope I answered your questions. if not, tell me ;)
>
> Nico
>

-- 
Nico Krebs

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