Have you looked at: DistanceOp.nearestPoints ?
http://tsusiatsoftware.net/jts/javadoc/com/vividsolutions/jts/operation/distance/DistanceOp.html#nearestPoints(com.vividsolutions.jts.geom.Geometry,
com.vividsolutions.jts.geom.Geometry)
Or if you are working only with lines, look at LengthIndexedLine project()
and extractPoint()
http://tsusiatsoftware.net/jts/javadoc/com/vividsolutions/jts/linearref/LengthIndexedLine.html#project(com.vividsolutions.jts.geom.Coordinate)
http://tsusiatsoftware.net/jts/javadoc/com/vividsolutions/jts/linearref/LengthIndexedLine.html#extractPoint(double)
On Tue, Feb 24, 2015 at 1:25 PM, Jan Tosovsky <[email protected]> wrote:
> Dear All,
>
> I am processing line fragments with reduced precission of coords taken from
> a specific application. While some fragments should touch another
> geometries, they are not considered as intersecting thanks to rounding (and
> hence the gaps).
>
> http://drifted.in/other/jts/snapping.png (exaggerated)
>
> Can I somehow snap line fragment endpoints (blue) to the specific path
> (red)
> if the distance is in a specified tolerance?
>
> I can imagine to compute distance of point to the geometry and if it is in
> the range, change the endpoint to the projected one on the geometry
> (perpendicularly).
>
> So far I've found:
> DistanceToPoint.computeDistance(Geometry geom, Coordinate pt,
> PointPairDistance ptDist)
>
> But I cannot locate method for retrieving the projected point even though
> it
> is most likely determined when computing that distance.
>
> Is there something like this in JTS?
>
> Thanks, Jan
>
>
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