[Qgis-developer] Python API different from documented API?

[Luigi Pirelli]

seems you are right... missing a complete sip definition

Luigi Pirelli

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On 6 May 2016 at 16:25, Worth Lutz <wal3 at mindspring.com> wrote:
> I'm finding that I'm spending lots of time trying to figure out method
> parameters in Python.
>
> The documented QGIS API apparently does not match the Python API.  See
> question in email below.  Compare the documents with the statement I ended
> up with and you see the differences.
>
> It seems that I'm having to experiment to figure out what to do for many
> objects.
>
> This is frustrating and I wonder if I am just missing something.
>
>
> Worth Lutz
>
>
> On 5/5/2016 12:25 PM, Worth Lutz wrote:
>
> I'm trying to use "closestSegmentWithContext" method of QgsGeometry in a
> plugin. I don't seem to be getting what I'm expecting.
>
> Comparing
> http://qgis.org/api/classQgsGeometry.html#ac09505a6a8a29f244a37c6f336cd98e7
>
> with the following from:
> https://github.com/qgis/QGIS/blob/master/python/core/geometry/qgsgeometry.sip
>
>     /**
>      * Searches for the closest segment of geometry to the given point
>      * @param point Specifies the point for search
>      * @param minDistPoint Receives the nearest point on the segment
>      * @param afterVertex Receives index of the vertex after the closest
> segment. The vertex
>      * before the closest segment is always afterVertex - 1
>      * @param leftOf Out: Returns if the point lies on the left of right
> side of the segment ( < 0 means left, > 0 means right )
>      * @param epsilon epsilon for segment snapping (added in 1.8)
>      * @return The squared cartesian distance is also returned in sqrDist,
> negative number on error
>      */
>     double closestSegmentWithContext( const QgsPoint& point, QgsPoint&
> minDistPoint /Out/, int& afterVertex /Out/ ) const;
>
>
> When I try:
>
> results =
> self.selectedStreetSegment.geometry().closestSegmentWithContext(point)
>
>
> I get a results as:
>
> (2560.365846544, (2106395, 746610), 1)
>
> I take this to be (sqrDist, minDistPoint, afterVertex ).  It does not seem
> to be returning "leftOf" which is the value I'm looking for.
>
> Is something missing in that "sip" definition?  I do not know what I'm
> looking at so I may be looking at the wrong thing. In any case, I cannot
> seem to find the results I need.
>
> Thanks,
> --
> Worth Lutz
>
>
>
>
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