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Re: TortoiseIDiff "compare" vs. "show difference"

From: Stefan Küng <tortoisesvn_at_gmail.com>
Date: 2007-07-24 18:41:23 CEST

Lorenz wrote:
> Hi Stefan,
> Stefan Küng wrote:
>> On 7/19/07, Lorenz <lorenznl@yahoo.com> wrote:
>>> [...]
>>> For that purpose it would be nice if TortoiseIDiff could not only show
>>> an overlay of both bmps, but also a difference bmp (numerical,
>>> per-pixel difference).
>>> One then could locate differing section easyly, zoom-in and switch
>>> back to the overlay mode to examine in-detail.
> just discovered that you are already working on the new feature 8-)
> I tried out the 10215 nightly, and find the feature already very
> usable.
> I'm not sure if the xor-view is the right methode, though.
> If I understand it correctly, identical pixels are displayed in
> background color, whereas differing pixel show up as some (at least to
> me) unpredictable mixed color.
> I'll do more tests the next days.

You're right, identical pixels show in the background color (well, they
are made to disappear). And the pixels which are different show up in
the 'merged' (OR'ed) color of both pixels.
That's the best we can do, really.
I guess you're comparing some photo images with this. But this is not
intended for such images but for simple colored images (e.g., the
pcb/cad images mentioned previously in this thread).

> There is one thing that hampers my intended usage: zooming-in always
> aligns the images top left corner to the top left corner of the TIdiff
> window, or centers it to the window if int fits completely within.
> Zooming preserve the position in the picture, that is the position in
> the center of the window (when using the zoom buttons) or the beneath
> the mouse curser (when using the scroll wheel) should stay where it
> is.

Zooming fixed in revision 10219 and 10220.

> Just out of curiosity: is there a reason, why the blend slider and the
> new blend mode buttons are located within the image area? I would have
> placed them in the toolbar.

We had them at the top of the view before, but it wasn't easily
accessible for people (they didn't notice it there).


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Received on Tue Jul 24 18:40:20 2007

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