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"""Tests of the transform submodule"""
import math
import pytest
import fiona
from fiona import transform
from fiona.errors import FionaDeprecationWarning, TransformError
from fiona.model import Geometry
from .conftest import requires_gdal_lt_3
TEST_GEOMS = [
Geometry(type="Point", coordinates=[0.0, 0.0, 1000.0]),
Geometry(type="LineString", coordinates=[[0.0, 0.0, 1000.0], [0.1, 0.1, -1000.0]]),
Geometry(type="MultiPoint", coordinates=[[0.0, 0.0, 1000.0], [0.1, 0.1, -1000.0]]),
Geometry(
type="Polygon",
coordinates=[
[
[0.0, 0.0, 1000.0],
[0.1, 0.1, -1000.0],
[0.1, -0.1, math.pi],
[0.0, 0.0, 1000.0],
]
],
),
Geometry(
type="MultiPolygon",
coordinates=[
[
[
[0.0, 0.0, 1000.0],
[0.1, 0.1, -1000.0],
[0.1, -0.1, math.pi],
[0.0, 0.0, 1000.0],
]
]
],
),
]
@pytest.mark.parametrize("geom", TEST_GEOMS)
def test_transform_geom_with_z(geom):
"""Transforming a geom with Z succeeds"""
transform.transform_geom("epsg:4326", "epsg:3857", geom)
@pytest.mark.parametrize("geom", TEST_GEOMS)
def test_transform_geom_array_z(geom):
"""Transforming a geom array with Z succeeds"""
g2 = transform.transform_geom(
"epsg:4326",
"epsg:3857",
[geom for _ in range(5)],
)
assert isinstance(g2, list)
assert len(g2) == 5
@pytest.mark.parametrize(
"crs",
[
"epsg:4326",
"EPSG:4326",
"WGS84",
{"init": "epsg:4326"},
{"proj": "longlat", "datum": "WGS84", "no_defs": True},
"OGC:CRS84",
],
)
def test_axis_ordering_rev(crs):
"""Test if transform uses traditional_axis_mapping"""
expected = (-8427998.647958742, 4587905.27136252)
t1 = transform.transform(crs, "epsg:3857", [-75.71], [38.06])
assert (t1[0][0], t1[1][0]) == pytest.approx(expected)
geom = Geometry.from_dict(**{"type": "Point", "coordinates": [-75.71, 38.06]})
g1 = transform.transform_geom(crs, "epsg:3857", geom)
assert g1["coordinates"] == pytest.approx(expected)
@pytest.mark.parametrize(
"crs",
[
"epsg:4326",
"EPSG:4326",
"WGS84",
{"init": "epsg:4326"},
{"proj": "longlat", "datum": "WGS84", "no_defs": True},
"OGC:CRS84",
],
)
def test_axis_ordering_fwd(crs):
"""Test if transform uses traditional_axis_mapping"""
rev_expected = (-75.71, 38.06)
t2 = transform.transform("epsg:3857", crs, [-8427998.647958742], [4587905.27136252])
assert (t2[0][0], t2[1][0]) == pytest.approx(rev_expected)
geom = Geometry.from_dict(
**{"type": "Point", "coordinates": [-8427998.647958742, 4587905.27136252]}
)
g2 = transform.transform_geom("epsg:3857", crs, geom)
assert g2.coordinates == pytest.approx(rev_expected)
def test_transform_issue971():
"""See https://github.com/Toblerity/Fiona/issues/971"""
source_crs = "EPSG:25832"
dest_src = "EPSG:4326"
geom = {
"type": "GeometryCollection",
"geometries": [
{
"type": "LineString",
"coordinates": [
(512381.8870945257, 5866313.311218272),
(512371.23869999964, 5866322.282500001),
(512364.6014999999, 5866328.260199999),
],
}
],
}
geom_transformed = transform.transform_geom(source_crs, dest_src, geom)
assert geom_transformed.geometries[0].coordinates[0] == pytest.approx(
(9.18427, 52.94630)
)
def test_transform_geom_precision_deprecation():
"""Get a precision deprecation warning in 1.9."""
with pytest.warns(FionaDeprecationWarning):
transform.transform_geom(
"epsg:4326",
"epsg:3857",
Geometry(type="Point", coordinates=(0, 0)),
precision=2,
)
def test_partial_reprojection_error():
"""Raise an error about full reprojection failure unless we opt in."""
geom = {
"type": "Polygon",
"coordinates": (
(
(6453888.0, -6453888.0),
(6453888.0, 6453888.0),
(-6453888.0, 6453888.0),
(-6453888.0, -6453888.0),
(6453888.0, -6453888.0),
),
),
}
src_crs = 'PROJCS["unknown",GEOGCS["unknown",DATUM["Unknown based on WGS84 ellipsoid",SPHEROID["WGS 84",6378137,298.257223563,AUTHORITY["EPSG","7030"]]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]]],PROJECTION["Orthographic"],PARAMETER["latitude_of_origin",-90],PARAMETER["central_meridian",0],PARAMETER["false_easting",0],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH]]'
dst_crs = "EPSG:4326"
with pytest.raises(TransformError):
_ = transform.transform_geom(src_crs, dst_crs, geom)
def test_partial_reprojection_opt_in():
"""Get no exception if we opt in to partial reprojection."""
geom = {
"type": "Polygon",
"coordinates": (
(
(6453888.0, -6453888.0),
(6453888.0, 6453888.0),
(-6453888.0, 6453888.0),
(-6453888.0, -6453888.0),
(6453888.0, -6453888.0),
),
),
}
src_crs = 'PROJCS["unknown",GEOGCS["unknown",DATUM["Unknown based on WGS84 ellipsoid",SPHEROID["WGS 84",6378137,298.257223563,AUTHORITY["EPSG","7030"]]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]]],PROJECTION["Orthographic"],PARAMETER["latitude_of_origin",-90],PARAMETER["central_meridian",0],PARAMETER["false_easting",0],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH]]'
dst_crs = "EPSG:4326"
with fiona.Env(OGR_ENABLE_PARTIAL_REPROJECTION=True):
_ = transform.transform_geom(src_crs, dst_crs, geom)
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