[ImageJ-devel] alpha 3

[Grant B. Harris]

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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