Z coordinate isn't used in JtsGeoJSONWriter

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Assessment

Difficulty
3/5
Estimated time
1-2 days
Newbie friendliness
45/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Stale
Tech stack
java
Domain
backend

Research direction

Start with JtsGeoJSONWriter.toString(shape) and compare its handling of a JtsPoint with three coordinates against the GeoJSONReader input shown in the issue. Verify the result using the provided point example; done means the serialized GeoJSON preserves the original z coordinate.

Written by the indexing model from the issue text.

Description

I've found that JtsGeoJSONWriter cannot parse JtsPoint with 3 coordinates (x,y,z) to GeoJSON string. z coordinate is just dropped during parsing.
An example is below. geoJSONPoint should be the same JSON as backToGeoJSONPoint variable but you can see that Z coordinate isn't returned.

String geoJSONPoint = "{\"type\": \"Point\", \"coordinates\": [-117.26028657062011, 32.87234560059042, 12.1]}";
JtsSpatialContextFactory factory = new JtsSpatialContextFactory();
factory.geo = true;
factory.useJtsPoint = true;
factory.useJtsLineString = true;
factory.datelineRule = DatelineRule.none;
JtsSpatialContext context = new JtsSpatialContext(factory);
GeoJSONReader geojsonReader = new GeoJSONReader(context, factory);
JtsGeoJSONWriter geoJSONWriter = new JtsGeoJSONWriter(context, factory);
Shape shape = geojsonReader.read(geoJSONPoint);
String backToGeoJSONPoint = geoJSONWriter.toString(shape);
Dominant language
Java
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