tei/MapLibreParticleLab
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

[core] Moved wrapping to LatLng scope

Browse Source 
Fixes a precision loss when converting unwrapped LatLngs.
This commit is contained in:
Bruno de Oliveira Abinader
2016-02-24 00:54:03 +02:00
parent b325df880b
commit abe3f9ce7a
4 changed files with 47 additions and 21 deletions
Download Patch File Download Diff File Expand all files Collapse all files

23
test/map/transform.cpp
View File

@@ -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;