Incorrect transformation when longitude >180

[jdries]

An unexpected coordinate truncation happens when coordinates exceed -180, which does not seem to happen in the Python variant.

The truncation happens here:
https://github.com/locationtech/proj4j/blob/master/core/src/main/java/org/locationtech/proj4j/proj/Projection.java#L326

I discovered this via this Geotrellis code:

val orig = Point(182.086672726415,69.3350337120443)
val origNormalized = Point(182.086672726415 - 360,69.3350337120443)
val utm01 = CRS.fromName("EPSG:32601")

val reprojected = orig.reproject(LatLng, utm01)
val normalizedReprojected = origNormalized.reproject(LatLng, utm01)
val roundTrip = reprojected.reproject(utm01,LatLng)
assertTrue(reprojected.equalsExact(normalizedReprojected, 0.1) )
assertTrue(orig.equalsExact(roundTrip, 0.00001) )

Python variant can also be tested:

import pyproj

# Define the input coordinates in EPSG:4326
longitude, latitude = 182.086672726415, 69.3350337120443

# Define the source and target CRS
source_crs = pyproj.CRS("EPSG:4326")
target_crs = pyproj.CRS("EPSG:32601")  # UTM Zone 1N

# Create a transformer object
transformer = pyproj.Transformer.from_crs(source_crs, target_crs, always_xy=True)

# Transform the coordinates
utm_x, utm_y = transformer.transform(longitude, latitude)

[pomadchin]

@jdries makes sense, we probably could ensure this is handled in a similar way proj candles it.

However, the orig coordinate itself in the question is not correct and proj4j currently is not expected to handle it properly:

// - longitudes are in [-180, 180] degrees ragne
// - latitudes are in [-90, 90] degrees range
val reprojected = Point(182.086672726415,69.3350337120443).reproject(LatLng, utm01)

[pomadchin]

It is also probably all linked to locationtech/geotrellis#3146