[postgis-devel] SNapPointToLine : GEOS : where is the code for st_intersects between line and point?

[Rémi Cura]

Hey,
I've been working on a ST_SnapPointToLine for the past week,
by reverse engineering when points are considered to be on line by
st_intersect.

The (classic) problem is purely a numerical issue, and I suspect a problem
in design of st_intersects.


So far my solution doesn't work for all line, can someone please point me
in the right direction in GEOS so I can see if something can be improved
regarding precision.

I know where the API is, but I'm looking for the exact part that decide if
a point and a line intersects.

Cheers,

Rémi-C
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