Hi Giovanni,
thanks for you reply. I tried to use your solution but the QgsPoint returned by
sbappedVertx has a strange coordinate
reault[1][0.096699529....][0].snappedVertex
(6.79039e-313,2.8142e-320)
new_geom =
QgsGeometry.fromPolyline([f.geometry().asPolyline()[0],a[1][7.715400893466547][0].snappedVertex])
after i tried to create a new geometry to use with l.cangeGeometry(ID FEATURE,
new_geom)
Any suggestion?
Thanks
Francesco
----Messaggio originale----
Da: gioha...@gmail.com
Data: 22/04/2015 21.54
A: "francescobocca...@libero.it"<francescobocca...@libero.it>
Cc: "qgis-developer"<qgis-developer@lists.osgeo.org>
Ogg: Re: [Qgis-developer] Automate snapping after insert of a new feature
Can't you use the the snapped point (QgsSnappingResult.snappedVertex) to
replace the original vertex position?
giovanni
2015-04-22 11:01 GMT+02:00 francescobocca...@libero.it
<francescobocca...@libero.it>:
Hi all,
i have a question for you. I'd like to have a new function in my plugin that
makes an autime snapping if a start point or end point of a new feature
inserted is closed to a vertex or segment base on a values setted ina
configuration file.
>From plugin console:
l = iface.activeLayer() --activeLayer
f = l.selectedFeatures()[0] -- new fetaure inserted
start = f.geometry().asPolyline()[0] -- get the start point (the point that i
would like to snap to a segment)
result = l.snapWithContext(start,10,QgsSnapper.SnapToVertexAndSegment) -- i use
result
(0, {0.0: [<qgis._core.QgsSnappingResult object at 0x0000000018B9C400>],
0.09699529788394015: [<qgis._core.QgsSnappingResult object at
0x0000000018B9C620>]})
I notice that the key 0.09699529788394015 is the effective distance between my
start point and the segment.
My question is:
How can i modify the feature geometry to snap to the segment according to
result?
Thanks
Francesco
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Giovanni Allegri
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