[Qgis-developer] Python: How to allow for more results using QgsSnapper.snapMapPoint(...)

[Casper Børgesen (CABO)]

Hi

I'm playing around with the QGIS (d01bfd1) snap functionalities in python and I'm trying to get it return all the segments in the vicinity of the point of interest.

    sl = QgsSnapper.SnapLayer()
    sl.mLayer = canvas.currentLayer()
    sl.mTolerance = 50
    sl.snapTo = QgsSnapper.SnapToSegment

    snapper = QgsSnapper(canvas.mapSettings())
    snapper.setSnapLayers([sl])
    snapper.setSnapMode = QgsSnapper.SnapWithResultsWithinTolerances

         (retval, result) = snapper.snapMapPoint(point_of_interest_in_map_coordinates)

If I choose a point near two coinciding polygon edges I only get one result.

If I choose a point near a place where three different polygon edges meet at the same point, I still only get one result.

I though using the snap mode SnapWithResultsWithinTolerances (or even in this case SnapWithResultsForSamePosition) would allow the snapper to give me more than one result?


Regards Casper
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