[ImageJ-devel] alpha 3

[Lee Kamentsky]

I can handle the border issue today - not a lot of work. I might be able 
to set the line alpha too. I have a little time on my hands to do so.

On 6/5/2011 5:45 PM, Grant B. Harris wrote:
> Good point, Gabriel.
>
> Perhaps we should add setStroke(Stroke stroke) to 
> imagej.data.roi.Overlay.
> (http://download.oracle.com/javase/7/docs/api/java/awt/BasicStroke.html)
>
> For variable alpha on the ROI outline, we would need to change 
> setLineColor(ColorRGB lineColor)... perhaps we to add need a ColorRGBA 
> class.
>
> -- Grant
>
>
> On 6/5/2011 2:32 PM, Gabriel Landini wrote:
>> Hi
>> Great to see the alpha 3 out. Not sure if people are happy for 
>> comments at
>> this stage, but just in case... All comments are made with a positive 
>> intent.
>>
>> For some reason, the images (for example the Clown sample) when 
>> enlarged, the
>> first and last rows and columns of pixels appear to have pixels that 
>> are half
>> the size of the rest of the image pixels. (Sure pixels do not have 
>> area, but
>> for positioning of ROIs and so on perhaps they should be represented 
>> as the
>> rest of the pixels).
>>
>> I see that ROIs have a black border around. Is there any plan to be 
>> able to
>> turn that off? Otherwise we cannot see what is underneath the ROI. Or 
>> perhaps
>> best to make these semi transparent? Or with dotted lines in alternating
>> colours?  I see lots of room for confusion in terms of what is the 
>> image and
>> what is overlay or things disappearing because the overlay having the 
>> same
>> colour as the background.
>>
>> Something I noted in IJ1 is that having lots of overlays being shown 
>> makes it
>> run very slow. Has anybody noticed this? Maybe they get 
>> refreshed/repainted
>> too often. I wonder if it is worth looking at the performance of 
>> having ROIs
>> as overlays as they appear in the alpha 3.
>>
>> I also noted that the black border around images cannot be switched 
>> off in the
>> Edit Options. I wonder if this is related to the half pixel display 
>> mentioned
>> above.
>>
>> Regards to all,
>>
>> Gabriel
>>
>>
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>
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