[GRASS5] [bug #262] (grass) v.digit: implement circle cursor for snapping distance

[Request Tracker]

this bug's URL: http://intevation.de/rt/webrt?serial_num=262
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Subject: v.digit: implement circle cursor for snapping distance

Wish:

It would be very convenient to have a circle cursor in v.digit implemented 
which displays the current snapping distance while digitizing.
Means: a circle is drawn around the mouse cursor in map with snapping distance
as diameter. This needs to be sensitive to the current zoom level.

Thanks,
Markus

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