[ptx] better control point ui (was release version 0.4?)

[Pablo d'Angelo]

On Fri, 12 Dec 2003, Ed Halley wrote:

> I think we could document this and consider ways to make it easier, but
> my current favorite method is this:
> 
>   Zoom: 100%
>   [X] auto fine tune
>   [X] auto add
>   [X] auto estimate
> 
>   Click on left image, click near same feature on right image.
>   Point is placed and fine-tuned on its own.
>   Repeat.

ups. I just noticed that auto estimage needs a second click on the first
image, even if 100% zoom is on. Fixed in current cvs.

> 
> For adding plumb guides (vertical or horizontal pairs), I think we can
> do MUCH better.
> 
>   Select image N for left pane, and the same image N for right pane.
>   Click on left image, click on right image.
>   If delta-x is greater than delta-y, assume this pair is a horizontal.
>   If delta-y is greater than delta-x, assume this pair is a vertical.

good idea. just added that feature.

I also fixed a bad bug, where the auto fine tune, auto add, auto estimate
could lead to the points that were just estimated, but not fine tuned.

ciao
  Pablo
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