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author | Bruno de Oliveira Abinader <bruno@mapbox.com> | 2016-02-24 00:54:03 +0200 |
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committer | Bruno de Oliveira Abinader <bruno@mapbox.com> | 2016-03-01 20:58:54 +0000 |
commit | abe3f9ce7ab8087b13871472a11e7f5021084642 (patch) | |
tree | c1b0128546be655a30628c167bc50a8fe1c86862 /test | |
parent | b325df880baf6f3a454c51d2e21d69114477c276 (diff) | |
download | qtlocation-mapboxgl-abe3f9ce7ab8087b13871472a11e7f5021084642.tar.gz |
[core] Moved wrapping to LatLng scope
Fixes a precision loss when converting unwrapped LatLngs.
Diffstat (limited to 'test')
-rw-r--r-- | test/map/transform.cpp | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/test/map/transform.cpp b/test/map/transform.cpp index f606418826..15b86f3d30 100644 --- a/test/map/transform.cpp +++ b/test/map/transform.cpp @@ -140,6 +140,29 @@ TEST(Transform, PerspectiveProjection) { ASSERT_NEAR(point.y, 0, 0.02); } +TEST(Transform, UnwrappedLatLng) { + MockView view; + Transform transform(view, ConstrainMode::HeightOnly); + transform.resize({{ 1000, 1000 }}); + transform.setScale(2 << 9); + transform.setPitch(0.9); + transform.setLatLng(LatLng(38, -77)); + + const TransformState& state = transform.getState(); + + LatLng fromScreenCoordinate = state.screenCoordinateToLatLng({ 500, 500 }); + ASSERT_NEAR(fromScreenCoordinate.latitude, 37.999999999999829, 0.0001); // 1.71E-13 + ASSERT_NEAR(fromScreenCoordinate.longitude, -76.999999999999773, 0.0001); // 2.27E-13 + + LatLng unwrappedForwards = state.screenCoordinateToLatLng(state.latLngToScreenCoordinate({ 38, 283 })); + ASSERT_NEAR(unwrappedForwards.latitude, 37.999999999999716, 0.0001); // 2.84E-13 + ASSERT_DOUBLE_EQ(unwrappedForwards.longitude, fromScreenCoordinate.longitude); + + LatLng unwrappedBackwards = state.screenCoordinateToLatLng(state.latLngToScreenCoordinate({ 38, -437 })); + ASSERT_DOUBLE_EQ(unwrappedBackwards.latitude, unwrappedForwards.latitude); + ASSERT_DOUBLE_EQ(unwrappedBackwards.longitude, fromScreenCoordinate.longitude); +} + TEST(Transform, ConstrainHeightOnly) { MockView view; LatLng loc; |