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MapLibreParticleLab/test/map/transform.test.cpp
Aleksandar Stojiljkovic 9809c9f8f5 [core] Offset viewport center when edge insets are specified 
The change is implemented in TransformState::getProjMatrix, the rest of the code is making sure that existing API contracts stay and there are tests verifyingrendering and render query processing only items within screen and given tolerance around screen edges.

MapView: don't bake edge insets into relalculated camera center. Keep edge insets as property of camera in TransformState (similar to pitch, zoom, bearing) independent from specified camera center. Interpolate edge insets in animation.

iOS Demo app: "Turn On/Off Content Insets" pitch the camera and navigate to convenient location in Denver, where streets are parallel to cardinal directions, to illustrate viewport center offset when edge insets are set.

Tests:
ViewFrustumCulling: although Annotations are deprecated, queryRenderedFeatures related tests in Annotations would need to get ported and decided to add the edge insets related query tests next to them. Verify frustum culling (render+queryRenderedFeatures) With different camera and edge insets setups. TODO: port Annotations tests.

Transform.Padding: Verify that coordinates take proper place on screen after applying edge insets.

LocalGlyphRasterizer: verify text rendering when applying padding.

Related to #11882: both use projection matrix elements [8] and [9].

Alternative approach to this was to increase and offset map origin so that the screen would be a sub-rectangle in larger map viewport. This approach has a drawback of unecessary processing the items that are outside screen area.

Fixes #12107, #12728, navigation-sdks/issues/120
2019-05-28 14:38:01 +03:00

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#include <mbgl/test/util.hpp>
#include <mbgl/map/transform.hpp>
#include <mbgl/util/geo.hpp>
#include <cmath>
using namespace mbgl;
TEST(Transform, InvalidZoom) {
Transform transform;
ASSERT_DOUBLE_EQ(0, transform.getLatLng().latitude());
ASSERT_DOUBLE_EQ(0, transform.getLatLng().longitude());
ASSERT_DOUBLE_EQ(0, transform.getZoom());
transform.jumpTo(CameraOptions().withZoom(1.0));
ASSERT_DOUBLE_EQ(1, transform.getZoom());
const double invalid = NAN;
transform.jumpTo(CameraOptions().withZoom(invalid));
ASSERT_DOUBLE_EQ(0, transform.getLatLng().latitude());
ASSERT_DOUBLE_EQ(0, transform.getLatLng().longitude());
ASSERT_DOUBLE_EQ(1, transform.getZoom());
transform.jumpTo(CameraOptions().withCenter(LatLng()).withZoom(invalid));
ASSERT_DOUBLE_EQ(0, transform.getLatLng().latitude());
ASSERT_DOUBLE_EQ(0, transform.getLatLng().longitude());
ASSERT_DOUBLE_EQ(1, transform.getZoom());
transform.jumpTo(CameraOptions().withZoom(transform.getState().getMaxZoom() + 0.1));
ASSERT_DOUBLE_EQ(transform.getZoom(), transform.getState().getMaxZoom());
// Executing flyTo with an empty size causes frameZoom to be NaN.
transform.flyTo(CameraOptions()
.withCenter(LatLng{ util::LATITUDE_MAX, util::LONGITUDE_MAX })
.withZoom(transform.getState().getMaxZoom()));
transform.updateTransitions(transform.getTransitionStart() + transform.getTransitionDuration());
ASSERT_DOUBLE_EQ(transform.getZoom(), transform.getState().getMaxZoom());
// Executing flyTo with maximum zoom level to the same zoom level causes
// frameZoom to be bigger than maximum zoom.
transform.resize(Size { 100, 100 });
transform.flyTo(CameraOptions()
.withCenter(LatLng{ util::LATITUDE_MAX, util::LONGITUDE_MAX })
.withZoom(transform.getState().getMaxZoom()));
transform.updateTransitions(transform.getTransitionStart() + transform.getTransitionDuration());
ASSERT_TRUE(transform.getState().valid());
ASSERT_DOUBLE_EQ(transform.getState().getMaxZoom(), transform.getZoom());
}
TEST(Transform, InvalidBearing) {
Transform transform;
ASSERT_DOUBLE_EQ(0, transform.getLatLng().latitude());
ASSERT_DOUBLE_EQ(0, transform.getLatLng().longitude());
ASSERT_DOUBLE_EQ(0, transform.getZoom());
transform.jumpTo(CameraOptions().withZoom(1.0).withBearing(2.0));
ASSERT_DOUBLE_EQ(0, transform.getLatLng().latitude());
ASSERT_DOUBLE_EQ(0, transform.getLatLng().longitude());
ASSERT_DOUBLE_EQ(1, transform.getZoom());
ASSERT_DOUBLE_EQ(-2.0 * util::DEG2RAD, transform.getBearing());
const double invalid = NAN;
transform.jumpTo(CameraOptions().withBearing(invalid));
ASSERT_DOUBLE_EQ(0, transform.getLatLng().latitude());
ASSERT_DOUBLE_EQ(0, transform.getLatLng().longitude());
ASSERT_DOUBLE_EQ(1, transform.getZoom());
ASSERT_DOUBLE_EQ(-2.0 * util::DEG2RAD, transform.getBearing());
}
TEST(Transform, IntegerZoom) {
Transform transform;
auto checkIntegerZoom = [&transform](uint8_t zoomInt, double zoom) {
transform.jumpTo(CameraOptions().withZoom(zoom));
ASSERT_NEAR(transform.getZoom(), zoom, 1e-8);
ASSERT_EQ(transform.getState().getIntegerZoom(), zoomInt);
ASSERT_NEAR(transform.getState().getZoomFraction(), zoom - zoomInt, 1e-8);
};
for (uint8_t zoomInt = 0; zoomInt < 20; ++zoomInt) {
for (uint32_t percent = 0; percent < 100; ++percent) {
double zoom = zoomInt + (0.01 * percent);
checkIntegerZoom(zoomInt, zoom);
}
}
// Special case zoom 20.
checkIntegerZoom(20, 20.0);
}
TEST(Transform, PerspectiveProjection) {
LatLng loc;
Transform transform;
transform.resize({ 1000, 1000 });
// 0.9 rad ~ 51.56620156 deg
transform.jumpTo(CameraOptions().withCenter(LatLng { 38.0, -77.0 }).withZoom(10.0).withPitch(51.56620156));
// expected values are from mapbox-gl-js
loc = transform.getLatLng();
ASSERT_DOUBLE_EQ(-77, loc.longitude());
ASSERT_DOUBLE_EQ(38, loc.latitude());
loc = transform.getState().screenCoordinateToLatLng({ 0, 1000 });
ASSERT_NEAR(-77.59198961199148, loc.longitude(), 1e-6);
ASSERT_NEAR(38.74661326302018, loc.latitude(), 1e-6);
loc = transform.getState().screenCoordinateToLatLng({ 1000, 0 });
ASSERT_NEAR(-76.75823239205641, loc.longitude(), 1e-6);
ASSERT_NEAR(37.692872969426375, loc.latitude(), 1e-6);
ScreenCoordinate point = transform.getState().latLngToScreenCoordinate({38.74661326302018, -77.59198961199148});
ASSERT_NEAR(point.x, 0.0, 1e-5);
ASSERT_NEAR(point.y, 1000.0, 1e-4);
point = transform.getState().latLngToScreenCoordinate({37.692872969426375, -76.75823239205641});
ASSERT_NEAR(point.x, 1000.0, 1e-5);
ASSERT_NEAR(point.y, 0.0, 1e-4);
}
TEST(Transform, UnwrappedLatLng) {
Transform transform;
transform.resize({ 1000, 1000 });
// 0.9 rad ~ 51.56620156 deg
transform.jumpTo(CameraOptions().withCenter(LatLng { 38.0, -77.0 }).withZoom(10.0).withPitch(51.56620156));
const TransformState& state = transform.getState();
LatLng fromGetLatLng = state.getLatLng();
ASSERT_DOUBLE_EQ(fromGetLatLng.latitude(), 38.0);
ASSERT_DOUBLE_EQ(fromGetLatLng.longitude(), -77.0);
LatLng fromScreenCoordinate = state.screenCoordinateToLatLng({ 500, 500 });
ASSERT_NEAR(fromScreenCoordinate.latitude(), 38.0, 1e-8);
ASSERT_NEAR(fromScreenCoordinate.longitude(), -77.0, 1e-8);
LatLng wrappedRightwards = state.screenCoordinateToLatLng(state.latLngToScreenCoordinate({ 38, 283 }));
ASSERT_NEAR(wrappedRightwards.latitude(), 38.0, 1e-8);
ASSERT_NEAR(wrappedRightwards.longitude(), 283.0, 1e-8);
wrappedRightwards.wrap();
ASSERT_NEAR(wrappedRightwards.longitude(), -77.0, 1e-8);
LatLng wrappedLeftwards = state.screenCoordinateToLatLng(state.latLngToScreenCoordinate({ 38, -437 }));
ASSERT_DOUBLE_EQ(wrappedLeftwards.latitude(), wrappedRightwards.latitude());
ASSERT_NEAR(wrappedLeftwards.longitude(), -437.0, 1e-8);
wrappedLeftwards.wrap();
ASSERT_NEAR(wrappedLeftwards.longitude(), -77.0, 1e-8);
}
TEST(Transform, ConstrainHeightOnly) {
Transform transform(MapObserver::nullObserver(), ConstrainMode::HeightOnly);
transform.resize({ 2, 2 });
transform.jumpTo(CameraOptions().withCenter(LatLngBounds::world().southwest()).withZoom(util::MAX_ZOOM));
ASSERT_NEAR(-util::LATITUDE_MAX, transform.getLatLng().latitude(), 1e-7);
ASSERT_NEAR(-util::LONGITUDE_MAX, transform.getLatLng().longitude(), 1e-7);
transform.jumpTo(CameraOptions().withCenter(LatLngBounds::world().northeast()));
ASSERT_NEAR(util::LATITUDE_MAX, transform.getLatLng().latitude(), 1e-7);
ASSERT_NEAR(-util::LONGITUDE_MAX, transform.getLatLng().longitude(), 1e-7);
}
TEST(Transform, ConstrainWidthAndHeight) {
Transform transform(MapObserver::nullObserver(), ConstrainMode::WidthAndHeight);
transform.resize({ 2, 2 });
transform.jumpTo(CameraOptions().withCenter(LatLngBounds::world().southwest()).withZoom(util::MAX_ZOOM));
ASSERT_NEAR(-util::LATITUDE_MAX, transform.getLatLng().latitude(), 1e-7);
ASSERT_NEAR(-util::LONGITUDE_MAX, transform.getLatLng().longitude(), 1e-6);
transform.jumpTo(CameraOptions().withCenter(LatLngBounds::world().northeast()));
ASSERT_NEAR(util::LATITUDE_MAX, transform.getLatLng().latitude(), 1e-7);
ASSERT_NEAR(-util::LONGITUDE_MAX, transform.getLatLng().longitude(), 1e-6);
}
TEST(Transform, Anchor) {
Transform transform;
transform.resize({ 1000, 1000 });
const LatLng latLng { 10, -100 };
const ScreenCoordinate anchorPoint = { 150, 150 };
transform.jumpTo(CameraOptions().withCenter(latLng).withZoom(10.0));
ASSERT_DOUBLE_EQ(latLng.latitude(), transform.getLatLng().latitude());
ASSERT_DOUBLE_EQ(latLng.longitude(), transform.getLatLng().longitude());
ASSERT_DOUBLE_EQ(10, transform.getZoom());
ASSERT_DOUBLE_EQ(0, transform.getBearing());
const LatLng anchorLatLng = transform.getState().screenCoordinateToLatLng(anchorPoint);
ASSERT_NE(latLng.latitude(), anchorLatLng.latitude());
ASSERT_NE(latLng.longitude(), anchorLatLng.longitude());
transform.jumpTo(CameraOptions().withCenter(latLng).withZoom(3.0));
ASSERT_DOUBLE_EQ(3, transform.getZoom());
ASSERT_DOUBLE_EQ(latLng.latitude(), transform.getLatLng().latitude());
ASSERT_DOUBLE_EQ(latLng.longitude(), transform.getLatLng().longitude());
transform.jumpTo(CameraOptions().withZoom(3.5));
ASSERT_DOUBLE_EQ(3.5, transform.getZoom());
ASSERT_DOUBLE_EQ(latLng.latitude(), transform.getLatLng().latitude());
ASSERT_DOUBLE_EQ(latLng.longitude(), transform.getLatLng().longitude());
transform.jumpTo(CameraOptions().withZoom(5.5).withAnchor(anchorPoint));
ASSERT_DOUBLE_EQ(5.5, transform.getZoom());
ASSERT_NE(latLng.latitude(), transform.getLatLng().latitude());
ASSERT_NE(latLng.longitude(), transform.getLatLng().longitude());
transform.jumpTo(CameraOptions().withCenter(latLng).withZoom(3.0));
ASSERT_DOUBLE_EQ(3, transform.getZoom());
ASSERT_DOUBLE_EQ(latLng.latitude(), transform.getLatLng().latitude());
ASSERT_DOUBLE_EQ(latLng.longitude(), transform.getLatLng().longitude());
transform.jumpTo(CameraOptions().withZoom(5.0));
ASSERT_DOUBLE_EQ(5, transform.getZoom());
ASSERT_DOUBLE_EQ(latLng.latitude(), transform.getLatLng().latitude());
ASSERT_DOUBLE_EQ(latLng.longitude(), transform.getLatLng().longitude());
transform.jumpTo(CameraOptions().withZoom(7.0).withAnchor(anchorPoint));
ASSERT_DOUBLE_EQ(7, transform.getZoom());
ASSERT_NE(latLng.latitude(), transform.getLatLng().latitude());
ASSERT_NE(latLng.longitude(), transform.getLatLng().longitude());
transform.jumpTo(CameraOptions().withCenter(latLng).withZoom(2.0));
ASSERT_DOUBLE_EQ(2, transform.getZoom());
ASSERT_DOUBLE_EQ(latLng.latitude(), transform.getLatLng().latitude());
ASSERT_DOUBLE_EQ(latLng.longitude(), transform.getLatLng().longitude());
transform.jumpTo(CameraOptions().withZoom(4.0));
ASSERT_DOUBLE_EQ(4, transform.getZoom());
ASSERT_DOUBLE_EQ(latLng.latitude(), transform.getLatLng().latitude());
ASSERT_DOUBLE_EQ(latLng.longitude(), transform.getLatLng().longitude());
transform.jumpTo(CameraOptions().withZoom(8.0).withAnchor(anchorPoint));
ASSERT_DOUBLE_EQ(8, transform.getZoom());
ASSERT_NE(latLng.latitude(), transform.getLatLng().latitude());
ASSERT_NE(latLng.longitude(), transform.getLatLng().longitude());
transform.jumpTo(CameraOptions().withCenter(latLng).withZoom(10.0).withBearing(-45.0));
ASSERT_DOUBLE_EQ(M_PI_4, transform.getBearing());
ASSERT_DOUBLE_EQ(latLng.latitude(), transform.getLatLng().latitude());
ASSERT_DOUBLE_EQ(latLng.longitude(), transform.getLatLng().longitude());
transform.jumpTo(CameraOptions().withBearing(0.0));
ASSERT_DOUBLE_EQ(0, transform.getBearing());
ASSERT_DOUBLE_EQ(latLng.latitude(), transform.getLatLng().latitude());
ASSERT_DOUBLE_EQ(latLng.longitude(), transform.getLatLng().longitude());
transform.jumpTo(CameraOptions().withBearing(45.0).withAnchor(anchorPoint));
ASSERT_DOUBLE_EQ(-45.0 * util::DEG2RAD, transform.getBearing());
// Anchor coordinates are imprecise because we are converting from an integer pixel.
ASSERT_NEAR(anchorLatLng.latitude(), transform.getLatLng().latitude(), 0.5);
ASSERT_NEAR(anchorLatLng.longitude(), transform.getLatLng().longitude(), 0.5);
transform.jumpTo(CameraOptions().withCenter(latLng).withZoom(10.0).withPitch(10.0));
ASSERT_DOUBLE_EQ(10.0 * util::DEG2RAD, transform.getPitch());
ASSERT_DOUBLE_EQ(latLng.latitude(), transform.getLatLng().latitude());
ASSERT_DOUBLE_EQ(latLng.longitude(), transform.getLatLng().longitude());
transform.jumpTo(CameraOptions().withPitch(15.0));
ASSERT_DOUBLE_EQ(15.0 * util::DEG2RAD, transform.getPitch());
ASSERT_DOUBLE_EQ(latLng.latitude(), transform.getLatLng().latitude());
ASSERT_DOUBLE_EQ(latLng.longitude(), transform.getLatLng().longitude());
transform.jumpTo(CameraOptions().withPitch(20.0).withAnchor(anchorPoint));
ASSERT_DOUBLE_EQ(20.0 * util::DEG2RAD, transform.getPitch());
// Anchor coordinates are imprecise because we are converting from an integer pixel.
ASSERT_NEAR(anchorLatLng.latitude(), transform.getLatLng().latitude(), 0.5);
ASSERT_NEAR(anchorLatLng.longitude(), transform.getLatLng().longitude(), 0.5);
}
TEST(Transform, Padding) {
Transform transform;
transform.resize({ 1000, 1000 });
ASSERT_DOUBLE_EQ(0, transform.getLatLng().latitude());
ASSERT_DOUBLE_EQ(0, transform.getLatLng().longitude());
CameraOptions nonPaddedCameraOptions = CameraOptions().withCenter(LatLng { 10, -100 }).withZoom(10.0);
transform.jumpTo(nonPaddedCameraOptions);
const LatLng trueCenter = transform.getLatLng();
ASSERT_DOUBLE_EQ(10, trueCenter.latitude());
ASSERT_DOUBLE_EQ(-100, trueCenter.longitude());
ASSERT_DOUBLE_EQ(10, transform.getZoom());
const LatLng screenCenter = transform.screenCoordinateToLatLng({
1000.0 / 2.0,
1000.0 / 2.0,
});
const LatLng upperHalfCenter = transform.screenCoordinateToLatLng({
1000.0 / 2.0,
1000.0 * 0.25,
});
EdgeInsets padding(1000.0 / 2.0, 0, 0, 0);
// CameraOption center and zoom don't change when padding changes: center of
// viewport remains the same as padding defines viwport center offset in rendering.
CameraOptions paddedOptions = CameraOptions().withPadding(padding);
transform.jumpTo(paddedOptions);
const LatLng theSameCenter = transform.getLatLng();
ASSERT_DOUBLE_EQ(trueCenter.latitude(), theSameCenter.latitude());
ASSERT_DOUBLE_EQ(trueCenter.longitude(), theSameCenter.longitude());
// However, LatLng is now at the center of lower half - verify conversion
// from screen coordinate to LatLng.
const LatLng paddedLowerHalfScreenCenter = transform.screenCoordinateToLatLng({
1000.0 / 2.0,
1000.0 * 0.75,
});
ASSERT_NEAR(screenCenter.latitude(), paddedLowerHalfScreenCenter.latitude(), 1e-10);
ASSERT_NEAR(screenCenter.longitude(), paddedLowerHalfScreenCenter.longitude(), 1e-10);
// LatLng previously in upper half center, should now be under screen center.
const LatLng paddedScreenCenter = transform.screenCoordinateToLatLng({
1000.0 / 2.0,
1000.0 / 2.0,
});
ASSERT_NEAR(upperHalfCenter.latitude(), paddedScreenCenter.latitude(), 1e-10);
ASSERT_NEAR(upperHalfCenter.longitude(), paddedScreenCenter.longitude(), 1e-10);
}
TEST(Transform, MoveBy) {
Transform transform;
transform.resize({ 1000, 1000 });
transform.jumpTo(CameraOptions().withCenter(LatLng()).withZoom(10.0));
LatLng trueCenter = transform.getLatLng();
ASSERT_DOUBLE_EQ(0, trueCenter.latitude());
ASSERT_DOUBLE_EQ(0, trueCenter.longitude());
ASSERT_DOUBLE_EQ(10, transform.getZoom());
for (uint8_t x = 0; x < 20; ++x) {
bool odd = x % 2;
bool forward = x % 10;
LatLng coordinate = transform.screenCoordinateToLatLng({ odd ? 400. : 600., forward ? 400. : 600 });
transform.moveBy({ odd ? 100. : -100., forward ? 100. : -100 });
trueCenter = transform.getLatLng();
ASSERT_NEAR(coordinate.latitude(), trueCenter.latitude(), 1e-8);
ASSERT_NEAR(coordinate.longitude(), trueCenter.longitude(), 1e-8);
}
// We have ~1.1 precision loss for each coordinate for 20 rounds of moveBy.
ASSERT_NEAR(0.0, trueCenter.latitude(), 1.1);
ASSERT_NEAR(0.0, trueCenter.longitude(), 1.1);
}
TEST(Transform, Antimeridian) {
Transform transform;
transform.resize({ 1000, 1000 });
transform.jumpTo(CameraOptions().withCenter(LatLng()).withZoom(1.0));
// San Francisco
const LatLng coordinateSanFrancisco { 37.7833, -122.4167 };
ScreenCoordinate pixelSF = transform.latLngToScreenCoordinate(coordinateSanFrancisco);
ASSERT_DOUBLE_EQ(151.79249437176432, pixelSF.x);
ASSERT_DOUBLE_EQ(383.76720782527661, pixelSF.y);
transform.jumpTo(CameraOptions().withCenter(LatLng { 0.0, -181.0 }));
ScreenCoordinate pixelSFLongest = transform.latLngToScreenCoordinate(coordinateSanFrancisco);
ASSERT_DOUBLE_EQ(-357.36306616412816, pixelSFLongest.x);
ASSERT_DOUBLE_EQ(pixelSF.y, pixelSFLongest.y);
LatLng unwrappedSF = coordinateSanFrancisco.wrapped();
unwrappedSF.unwrapForShortestPath(transform.getLatLng());
ScreenCoordinate pixelSFShortest = transform.latLngToScreenCoordinate(unwrappedSF);
ASSERT_DOUBLE_EQ(666.63694385219173, pixelSFShortest.x);
ASSERT_DOUBLE_EQ(pixelSF.y, pixelSFShortest.y);
transform.jumpTo(CameraOptions().withCenter(LatLng { 0.0, 179.0 }));
pixelSFShortest = transform.latLngToScreenCoordinate(coordinateSanFrancisco);
ASSERT_DOUBLE_EQ(pixelSFLongest.x, pixelSFShortest.x);
ASSERT_DOUBLE_EQ(pixelSFLongest.y, pixelSFShortest.y);
// Waikiri
const LatLng coordinateWaikiri{ -16.9310, 179.9787 };
transform.jumpTo(CameraOptions().withCenter(coordinateWaikiri).withZoom(10.0));
ScreenCoordinate pixelWaikiri = transform.latLngToScreenCoordinate(coordinateWaikiri);
ASSERT_DOUBLE_EQ(500, pixelWaikiri.x);
ASSERT_DOUBLE_EQ(500, pixelWaikiri.y);
transform.jumpTo(CameraOptions().withCenter(LatLng { coordinateWaikiri.latitude(), 180.0213 }));
ScreenCoordinate pixelWaikiriLongest = transform.latLngToScreenCoordinate(coordinateWaikiri);
ASSERT_DOUBLE_EQ(524725.96438108233, pixelWaikiriLongest.x);
ASSERT_DOUBLE_EQ(pixelWaikiri.y, pixelWaikiriLongest.y);
LatLng unwrappedWaikiri = coordinateWaikiri.wrapped();
unwrappedWaikiri.unwrapForShortestPath(transform.getLatLng());
ScreenCoordinate pixelWaikiriShortest = transform.latLngToScreenCoordinate(unwrappedWaikiri);
ASSERT_DOUBLE_EQ(437.95925272648344, pixelWaikiriShortest.x);
ASSERT_DOUBLE_EQ(pixelWaikiri.y, pixelWaikiriShortest.y);
LatLng coordinateFromPixel = transform.screenCoordinateToLatLng(pixelWaikiriLongest);
ASSERT_NEAR(coordinateWaikiri.latitude(), coordinateFromPixel.latitude(), 1e-4);
ASSERT_NEAR(coordinateWaikiri.longitude(), coordinateFromPixel.longitude(), 1e-4);
transform.jumpTo(CameraOptions().withCenter(LatLng { coordinateWaikiri.latitude(), 180.0213 }));
pixelWaikiriShortest = transform.latLngToScreenCoordinate(coordinateWaikiri);
ASSERT_DOUBLE_EQ(pixelWaikiriLongest.x, pixelWaikiriShortest.x);
ASSERT_DOUBLE_EQ(pixelWaikiriLongest.y, pixelWaikiriShortest.y);
coordinateFromPixel = transform.screenCoordinateToLatLng(pixelWaikiriShortest);
ASSERT_NEAR(coordinateWaikiri.latitude(), coordinateFromPixel.latitude(), 1e-4);
ASSERT_NEAR(coordinateWaikiri.longitude(), coordinateFromPixel.longitude(), 1e-4);
}
TEST(Transform, Camera) {
Transform transform;
transform.resize({ 1000, 1000 });
const LatLng latLng1 { 45, 135 };
CameraOptions cameraOptions1 = CameraOptions().withCenter(latLng1).withZoom(20.0);
transform.jumpTo(cameraOptions1);
ASSERT_DOUBLE_EQ(latLng1.latitude(), transform.getLatLng().latitude());
ASSERT_DOUBLE_EQ(latLng1.longitude(), transform.getLatLng().longitude());
ASSERT_DOUBLE_EQ(20, transform.getZoom());
const LatLng latLng2 { -45, -135 };
CameraOptions cameraOptions2 = CameraOptions().withCenter(latLng2).withZoom(10.0);
transform.jumpTo(cameraOptions2);
ASSERT_DOUBLE_EQ(latLng2.latitude(), transform.getLatLng().latitude());
ASSERT_DOUBLE_EQ(latLng2.longitude(), transform.getLatLng().longitude());
ASSERT_DOUBLE_EQ(10, transform.getZoom());
AnimationOptions easeOptions(Seconds(1));
easeOptions.transitionFrameFn = [&](double t) {
ASSERT_TRUE(t >= 0 && t <= 1);
ASSERT_GE(latLng1.latitude(), transform.getLatLng().latitude());
ASSERT_LE(latLng1.longitude(), transform.getLatLng().longitude());
};
easeOptions.transitionFinishFn = [&]() {
ASSERT_DOUBLE_EQ(latLng1.latitude(), transform.getLatLng().latitude());
ASSERT_DOUBLE_EQ(latLng1.longitude(), transform.getLatLng().longitude());
ASSERT_DOUBLE_EQ(20, transform.getZoom());
};
transform.easeTo(cameraOptions1, easeOptions);
ASSERT_TRUE(transform.inTransition());
transform.updateTransitions(transform.getTransitionStart() + Milliseconds(250));
transform.updateTransitions(transform.getTransitionStart() + Milliseconds(500));
transform.updateTransitions(transform.getTransitionStart() + Milliseconds(750));
transform.updateTransitions(transform.getTransitionStart() + transform.getTransitionDuration());
ASSERT_FALSE(transform.inTransition());
AnimationOptions flyOptions(Seconds(1));
flyOptions.transitionFrameFn = [&](double t) {
ASSERT_TRUE(t >= 0 && t <= 1);
ASSERT_LE(latLng2.latitude(), transform.getLatLng().latitude());
ASSERT_GE(latLng2.longitude(), transform.getLatLng(LatLng::Unwrapped).longitude());
};
flyOptions.transitionFinishFn = [&]() {
// XXX Fix precision loss in flyTo:
// https://github.com/mapbox/mapbox-gl-native/issues/4298
ASSERT_DOUBLE_EQ(latLng2.latitude(), transform.getLatLng().latitude());
ASSERT_DOUBLE_EQ(latLng2.longitude(), transform.getLatLng().longitude());
ASSERT_NEAR(10.0, transform.getZoom(), 1e-5);
};
transform.flyTo(cameraOptions2, flyOptions);
ASSERT_TRUE(transform.inTransition());
transform.updateTransitions(transform.getTransitionStart() + Milliseconds(250));
transform.updateTransitions(transform.getTransitionStart() + Milliseconds(500));
transform.updateTransitions(transform.getTransitionStart() + Milliseconds(750));
transform.updateTransitions(transform.getTransitionStart() + transform.getTransitionDuration());
ASSERT_FALSE(transform.inTransition());
// Anchor and center points are mutually exclusive.
CameraOptions camera;
camera.center = LatLng { 0, 0 };
camera.anchor = ScreenCoordinate { 0, 0 }; // top-left
camera.zoom = transform.getState().getMaxZoom();
transform.easeTo(camera, AnimationOptions(Seconds(1)));
transform.updateTransitions(transform.getTransitionStart() + Milliseconds(250));
transform.updateTransitions(transform.getTransitionStart() + Milliseconds(500));
transform.updateTransitions(transform.getTransitionStart() + Milliseconds(750));
transform.updateTransitions(transform.getTransitionStart() + transform.getTransitionDuration());
ASSERT_DOUBLE_EQ(transform.getLatLng().latitude(), 0);
ASSERT_DOUBLE_EQ(transform.getLatLng().longitude(), 0);
}
TEST(Transform, ProjectionMode) {
Transform transform;
transform.setProjectionMode(ProjectionMode().withAxonometric(true).withXSkew(1.0).withYSkew(0.0));
auto options = transform.getProjectionMode();
EXPECT_TRUE(*options.axonometric);
EXPECT_EQ(*options.xSkew, 1.0);
EXPECT_EQ(*options.ySkew, 0.0);
}
TEST(Transform, IsPanning)
{
Transform transform;
AnimationOptions easeOptions(Seconds(1));
easeOptions.transitionFrameFn = [&transform](double) {
ASSERT_TRUE(transform.getState().isPanning());
};
transform.resize({ 1000, 1000 });
transform.easeTo(CameraOptions().withCenter(LatLng(0, 360.0)), easeOptions);
transform.updateTransitions(transform.getTransitionStart() + Milliseconds(250));
transform.updateTransitions(transform.getTransitionStart() + Milliseconds(500));
transform.updateTransitions(transform.getTransitionStart() + Milliseconds(750));
transform.updateTransitions(transform.getTransitionStart() + transform.getTransitionDuration());
}
TEST(Transform, DefaultTransform) {
struct TransformObserver : public mbgl::MapObserver {
void onCameraWillChange(MapObserver::CameraChangeMode) final {
cameraWillChangeCallback();
};
void onCameraDidChange(MapObserver::CameraChangeMode) final {
cameraDidChangeCallback();
};
std::function<void()> cameraWillChangeCallback;
std::function<void()> cameraDidChangeCallback;
};
uint32_t cameraWillChangeCount = 0;
uint32_t cameraDidChangeCount = 0;
TransformObserver observer;
observer.cameraWillChangeCallback = [&cameraWillChangeCount]() { cameraWillChangeCount++; };
observer.cameraDidChangeCallback = [&cameraDidChangeCount]() { cameraDidChangeCount++; };
Transform transform(observer);
const TransformState& state = transform.getState();
ASSERT_FALSE(state.valid());
LatLng nullIsland, latLng = {};
ScreenCoordinate center, point = {};
const uint32_t min = 0;
const uint32_t max = 65535;
// Cannot assign invalid sizes.
std::vector<Size> invalidSizes = { {}, { min, max }, { max, min } };
for (const Size& size : invalidSizes) {
try {
transform.resize(size);
ASSERT_TRUE(false) << "Should throw";
} catch (...) {
ASSERT_TRUE(size.isEmpty());
}
}
Size validSize { max, max };
ASSERT_FALSE(validSize.isEmpty());
try {
transform.resize(validSize);
ASSERT_EQ(cameraWillChangeCount, 1u);
ASSERT_EQ(cameraDidChangeCount, 1u);
} catch (...) {
ASSERT_TRUE(false) << "Should not throw";
}
ASSERT_TRUE(state.valid());
// Double resize
try {
transform.resize(validSize);
ASSERT_EQ(cameraWillChangeCount, 1u);
ASSERT_EQ(cameraDidChangeCount, 1u);
} catch (...) {
ASSERT_TRUE(false) << "Should not throw";
}
center = { max / 2., max / 2. };
latLng = state.screenCoordinateToLatLng(center);
ASSERT_NEAR(latLng.latitude(), nullIsland.latitude(), 1e-8);
ASSERT_NEAR(latLng.longitude(), nullIsland.longitude(), 1e-8);
point = state.latLngToScreenCoordinate(nullIsland);
ASSERT_DOUBLE_EQ(point.x, center.x);
ASSERT_DOUBLE_EQ(point.y, center.y);
}
TEST(Transform, LatLngBounds) {
const LatLng nullIsland {};
const LatLng sanFrancisco { 37.7749, -122.4194 };
Transform transform;
transform.resize({ 1000, 1000 });
transform.jumpTo(CameraOptions().withCenter(LatLng()).withZoom(transform.getState().getMaxZoom()));
// Default bounds.
ASSERT_EQ(transform.getState().getLatLngBounds(), LatLngBounds::unbounded());
ASSERT_EQ(transform.getLatLng(), nullIsland);
// Invalid bounds.
try {
transform.setLatLngBounds(LatLngBounds::empty());
ASSERT_TRUE(false) << "Should throw";
} catch (...) {
ASSERT_EQ(transform.getState().getLatLngBounds(), LatLngBounds::unbounded());
}
transform.jumpTo(CameraOptions().withCenter(sanFrancisco));
ASSERT_EQ(transform.getLatLng(), sanFrancisco);
// Single location.
transform.setLatLngBounds(LatLngBounds::singleton(sanFrancisco));
ASSERT_EQ(transform.getLatLng(), sanFrancisco);
// -1 | 0 | +1
// ┌───┬───┰───┬───┰───┬───┐
// │ │ ┃• │ ┃ │ │
// ├───┼───╂───┼───╂───┼───┤
// │ │ ┃▓▓▓│▓▓▓┃ │ │
// └───┴───┸───┴───┸───┴───┘
transform.setLatLngBounds(LatLngBounds::hull({ -90.0, -180.0 }, { 0.0, 180.0 }));
transform.jumpTo(CameraOptions().withCenter(sanFrancisco));
ASSERT_EQ(transform.getLatLng().latitude(), 0.0);
ASSERT_EQ(transform.getLatLng().longitude(), sanFrancisco.longitude());
// Try crossing the antimeridian from the left.
transform.jumpTo(CameraOptions().withCenter(LatLng { 0.0, -200.0 }));
ASSERT_DOUBLE_EQ(transform.getLatLng().longitude(), -180.0);
// Try crossing the antimeridian from the right.
transform.jumpTo(CameraOptions().withCenter(LatLng { 0.0, 200.0 }));
ASSERT_DOUBLE_EQ(transform.getLatLng(LatLng::Unwrapped).longitude(), 180.0);
ASSERT_DOUBLE_EQ(transform.getLatLng().longitude(), -180.0);
// -1 | 0 | +1
// ┌───┬───┰───┬───┰───┬───┐
// │ │ ┃• │▓▓▓┃ │ │
// ├───┼───╂───┼───╂───┼───┤
// │ │ ┃ │▓▓▓┃ │ │
// └───┴───┸───┴───┸───┴───┘
transform.setLatLngBounds(LatLngBounds::hull({ -90.0, 0.0 }, { 90.0, 180.0 }));
transform.jumpTo(CameraOptions().withCenter(sanFrancisco));
ASSERT_EQ(transform.getLatLng().latitude(), sanFrancisco.latitude());
ASSERT_EQ(transform.getLatLng().longitude(), 0.0);
// -1 | 0 | +1
// ┌───┬───┰───┬───┰───┬───┐
// │ │ ┃• │ ┃ │ │
// ├───┼───╂───┼───╂───┼───┤
// │ │ ┃ │▓▓▓┃ │ │
// └───┴───┸───┴───┸───┴───┘
transform.setLatLngBounds(LatLngBounds::hull({ -90.0, 0.0 }, { 0.0, 180.0 }));
transform.jumpTo(CameraOptions().withCenter(sanFrancisco));
ASSERT_EQ(transform.getLatLng().latitude(), 0.0);
ASSERT_EQ(transform.getLatLng().longitude(), 0.0);
// -1 | 0 | +1
// ┌───┬───┰───┬───┰───┬───┐
// │ │ ┃ │ ▓┃▓ │ │
// ├───┼───╂───┼───╂───┼───┤
// │ │ ┃ │ ┃ │ │
// └───┴───┸───┴───┸───┴───┘
LatLng inside { 45.0, 150.0 };
transform.setLatLngBounds(LatLngBounds::hull({ 0.0, 120.0 }, { 90.0, 240.0 }));
transform.jumpTo(CameraOptions().withCenter(inside));
ASSERT_EQ(transform.getLatLng().latitude(), inside.latitude());
ASSERT_EQ(transform.getLatLng().longitude(), inside.longitude());
transform.jumpTo(CameraOptions().withCenter(LatLng { 0.0, 140.0 }));
ASSERT_DOUBLE_EQ(transform.getLatLng().longitude(), 140.0);
transform.jumpTo(CameraOptions().withCenter(LatLng { 0.0, 160.0 }));
ASSERT_DOUBLE_EQ(transform.getLatLng().longitude(), 160.0);
// Constrain latitude only.
transform.jumpTo(CameraOptions().withCenter(LatLng { -45.0, inside.longitude() }));
ASSERT_EQ(transform.getLatLng().latitude(), 0.0);
ASSERT_EQ(transform.getLatLng().longitude(), inside.longitude());
// Crossing the antimeridian, within bounds.
transform.jumpTo(CameraOptions().withCenter(LatLng { inside.latitude(), 181.0 }));
ASSERT_EQ(transform.getLatLng().longitude(), -179.0);
// Crossing the antimeridian, outside bounds.
transform.jumpTo(CameraOptions().withCenter(inside));
transform.jumpTo(CameraOptions().withCenter(LatLng { inside.latitude(), 250.0 }));
ASSERT_DOUBLE_EQ(transform.getLatLng().longitude(), -120.0);
// Constrain to the left edge.
transform.jumpTo(CameraOptions().withCenter(LatLng { inside.latitude(), 119.0 }));
ASSERT_DOUBLE_EQ(transform.getLatLng().longitude(), 120.0);
// Simulate swipe to the left.
mbgl::AnimationOptions easeOptions(mbgl::Seconds(1));
easeOptions.transitionFrameFn = [&](double /* t */) {
ASSERT_NEAR(transform.getLatLng().longitude(), 120.0, 1e-4);
};
easeOptions.transitionFinishFn = [&]() {
ASSERT_NEAR(transform.getLatLng().longitude(), 120.0, 1e-4);
};
transform.moveBy(ScreenCoordinate { -500, -500 }, easeOptions);
transform.updateTransitions(transform.getTransitionStart() + Milliseconds(0));
transform.updateTransitions(transform.getTransitionStart() + Milliseconds(250));
transform.updateTransitions(transform.getTransitionStart() + Milliseconds(500));
transform.updateTransitions(transform.getTransitionStart() + Milliseconds(750));
transform.updateTransitions(transform.getTransitionStart() + transform.getTransitionDuration());
// Constrain to the right edge.
transform.jumpTo(CameraOptions().withCenter(LatLng { inside.latitude(), 241.0 }));
ASSERT_DOUBLE_EQ(transform.getLatLng().longitude(), -120.0);
// Simulate swipe to the right.
easeOptions.transitionFrameFn = [&](double /* t */) {
ASSERT_NEAR(transform.getLatLng().longitude(), -120.0, 1e-4);
};
easeOptions.transitionFinishFn = [&]() {
ASSERT_NEAR(transform.getLatLng().longitude(), -120.0, 1e-4);
};
transform.moveBy(ScreenCoordinate { 500, 500 }, easeOptions);
transform.updateTransitions(transform.getTransitionStart() + Milliseconds(0));
transform.updateTransitions(transform.getTransitionStart() + Milliseconds(250));
transform.updateTransitions(transform.getTransitionStart() + Milliseconds(500));
transform.updateTransitions(transform.getTransitionStart() + Milliseconds(750));
transform.updateTransitions(transform.getTransitionStart() + transform.getTransitionDuration());
// -1 | 0 | +1
// ┌───┬───┰───┬───┰───┬───┐
// │ │ ┃ │ ┃ │ │
// ├───┼───╂───┼───╂───┼───┤
// │ │ ▓┃▓ │ ┃ │ │
// └───┴───┸───┴───┸───┴───┘
inside = LatLng{ -45.0, -150.0 };
transform.setLatLngBounds(LatLngBounds::hull({ -90.0, -240.0 }, { 0.0, -120.0 }));
transform.jumpTo(CameraOptions().withCenter(inside));
ASSERT_DOUBLE_EQ(transform.getLatLng().latitude(), inside.latitude());
ASSERT_EQ(transform.getLatLng().longitude(), inside.longitude());
transform.jumpTo(CameraOptions().withCenter(LatLng { 0.0, -140.0 }));
ASSERT_DOUBLE_EQ(transform.getLatLng().longitude(), -140.0);
transform.jumpTo(CameraOptions().withCenter(LatLng { 0.0, -160.0 }));
ASSERT_DOUBLE_EQ(transform.getLatLng().longitude(), -160.0);
// Constrain latitude only.
transform.jumpTo(CameraOptions().withCenter(LatLng { 45.0, inside.longitude() }));
ASSERT_EQ(transform.getLatLng().latitude(), 0.0);
ASSERT_EQ(transform.getLatLng().longitude(), inside.longitude());
// Crossing the antimeridian, within bounds.
transform.jumpTo(CameraOptions().withCenter(LatLng { inside.latitude(), -181.0 }));
ASSERT_DOUBLE_EQ(transform.getLatLng().latitude(), inside.latitude());
ASSERT_EQ(transform.getLatLng().longitude(), 179.0);
// Crossing the antimeridian, outside bounds.
transform.jumpTo(CameraOptions().withCenter(inside));
transform.jumpTo(CameraOptions().withCenter(LatLng { inside.latitude(), -250.0 }));
ASSERT_DOUBLE_EQ(transform.getLatLng().longitude(), 120.0);
// Constrain to the left edge.
transform.jumpTo(CameraOptions().withCenter(LatLng { inside.latitude(), -119.0 }));
ASSERT_DOUBLE_EQ(transform.getLatLng().longitude(), -120.0);
transform.moveBy(ScreenCoordinate { -500, 0 });
ASSERT_DOUBLE_EQ(transform.getLatLng().longitude(), -120.0);
// Constrain to the right edge.
transform.jumpTo(CameraOptions().withCenter(LatLng { inside.latitude(), -241.0 }));
ASSERT_DOUBLE_EQ(transform.getLatLng().longitude(), 120.0);
transform.moveBy(ScreenCoordinate { 500, 0 });
ASSERT_DOUBLE_EQ(transform.getLatLng().longitude(), 120.0);
}
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