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MapLibreParticleLab/test/map/transform.test.cpp
Bruno de Oliveira Abinader 433e54e636 [core] Clamp to scale boundaries in TransformState::setLatLngZoom
2017-06-28 20:59:56 +03:00

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#include <mbgl/test/util.hpp>
#include <mbgl/map/transform.hpp>
#include <mbgl/util/geo.hpp>
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.setZoom(1);
ASSERT_DOUBLE_EQ(1, transform.getZoom());
const double invalid = std::nan("");
transform.setZoom(invalid);
ASSERT_DOUBLE_EQ(0, transform.getLatLng().latitude());
ASSERT_DOUBLE_EQ(0, transform.getLatLng().longitude());
ASSERT_DOUBLE_EQ(1, transform.getZoom());
transform.setLatLngZoom({ 0, 0 }, invalid);
ASSERT_DOUBLE_EQ(0, transform.getLatLng().latitude());
ASSERT_DOUBLE_EQ(0, transform.getLatLng().longitude());
ASSERT_DOUBLE_EQ(1, transform.getZoom());
transform.setZoom(transform.getState().getMaxZoom() + 0.1);
ASSERT_DOUBLE_EQ(transform.getZoom(), transform.getState().getMaxZoom());
CameraOptions cameraOptions;
cameraOptions.center = LatLng { util::LATITUDE_MAX, util::LONGITUDE_MAX };
cameraOptions.zoom = 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);
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.setZoom(1);
transform.setAngle(2);
ASSERT_DOUBLE_EQ(0, transform.getLatLng().latitude());
ASSERT_DOUBLE_EQ(0, transform.getLatLng().longitude());
ASSERT_DOUBLE_EQ(1, transform.getZoom());
ASSERT_DOUBLE_EQ(2, transform.getAngle());
const double invalid = std::nan("");
transform.setAngle(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, transform.getAngle());
}
TEST(Transform, IntegerZoom) {
Transform transform;
auto checkIntegerZoom = [&transform](uint8_t zoomInt, double zoom) {
transform.setZoom(zoom);
ASSERT_NEAR(transform.getZoom(), zoom, 0.0001);
ASSERT_EQ(transform.getState().getIntegerZoom(), zoomInt);
ASSERT_NEAR(transform.getState().getZoomFraction(), zoom - zoomInt, 0.0001);
};
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 });
transform.setZoom(10);
transform.setPitch(0.9);
transform.setLatLng(LatLng(38, -77));
// expected values are from mapbox-gl-js
loc = transform.getLatLng();
ASSERT_NEAR(-77, loc.longitude(), 0.0001);
ASSERT_NEAR(38, loc.latitude(), 0.0001);
loc = transform.getState().screenCoordinateToLatLng({ 0, 1000 });
ASSERT_NEAR(-77.59198961199148, loc.longitude(), 0.0002);
ASSERT_NEAR(38.74661326302018, loc.latitude(), 0.0001);
loc = transform.getState().screenCoordinateToLatLng({ 1000, 0 });
ASSERT_NEAR(-76.75823239205641, loc.longitude(), 0.0001);
ASSERT_NEAR(37.692872969426375, loc.latitude(), 0.0001);
ScreenCoordinate point = transform.getState().latLngToScreenCoordinate({38.74661326302018, -77.59198961199148});
ASSERT_NEAR(point.x, 0, 0.01);
ASSERT_NEAR(point.y, 1000, 0.01);
point = transform.getState().latLngToScreenCoordinate({37.692872969426375, -76.75823239205641});
ASSERT_NEAR(point.x, 1000, 0.02);
ASSERT_NEAR(point.y, 0, 0.02);
}
TEST(Transform, UnwrappedLatLng) {
Transform transform;
transform.resize({ 1000, 1000 });
transform.setZoom(10);
transform.setPitch(0.9);
transform.setLatLng(LatLng(38, -77));
const TransformState& state = transform.getState();
LatLng fromGetLatLng = state.getLatLng();
ASSERT_DOUBLE_EQ(fromGetLatLng.latitude(), 38);
ASSERT_DOUBLE_EQ(fromGetLatLng.longitude(), -77);
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 wrappedRightwards = state.screenCoordinateToLatLng(state.latLngToScreenCoordinate({ 38, 283 }));
ASSERT_NEAR(wrappedRightwards.latitude(), 37.999999999999716, 0.0001); // 2.84E-13
ASSERT_NEAR(wrappedRightwards.longitude(), 282.99999999988751, 0.0001); // 1.1249E-11
wrappedRightwards.wrap();
ASSERT_NEAR(wrappedRightwards.longitude(), -77.000000000112493, 0.001); // 1.1249E-11
LatLng wrappedLeftwards = state.screenCoordinateToLatLng(state.latLngToScreenCoordinate({ 38, -437 }));
ASSERT_NEAR(wrappedLeftwards.latitude(), wrappedRightwards.latitude(), 0.001);
ASSERT_NEAR(wrappedLeftwards.longitude(), -436.99999999988728, 0.001); // 1.1272E-11
wrappedLeftwards.wrap();
ASSERT_NEAR(wrappedLeftwards.longitude(), -76.99999999988728, 0.001); // 1.1272E-11
}
TEST(Transform, ConstrainHeightOnly) {
LatLng loc;
Transform transform;
transform.resize({ 1000, 1000 });
transform.setZoom(util::MAX_ZOOM);
transform.setLatLng(LatLngBounds::world().southwest());
loc = transform.getLatLng();
ASSERT_NEAR(-util::LATITUDE_MAX, loc.latitude(), 0.001);
ASSERT_NEAR(util::LONGITUDE_MAX, std::abs(loc.longitude()), 0.001);
transform.setLatLng(LatLngBounds::world().northeast());
loc = transform.getLatLng();
ASSERT_NEAR(util::LATITUDE_MAX, loc.latitude(), 0.001);
ASSERT_NEAR(util::LONGITUDE_MAX, std::abs(loc.longitude()), 0.001);
}
TEST(Transform, ConstrainWidthAndHeight) {
LatLng loc;
Transform transform(MapObserver::nullObserver(), ConstrainMode::WidthAndHeight);
transform.resize({ 1000, 1000 });
transform.setZoom(util::MAX_ZOOM);
transform.setLatLng(LatLngBounds::world().southwest());
loc = transform.getLatLng();
ASSERT_NEAR(-util::LATITUDE_MAX, loc.latitude(), 0.001);
ASSERT_NEAR(-util::LONGITUDE_MAX, loc.longitude(), 0.001);
transform.setLatLng(LatLngBounds::world().northeast());
loc = transform.getLatLng();
ASSERT_NEAR(util::LATITUDE_MAX, loc.latitude(), 0.001);
ASSERT_NEAR(util::LONGITUDE_MAX, std::abs(loc.longitude()), 0.001);
}
TEST(Transform, Anchor) {
Transform transform;
transform.resize({ 1000, 1000 });
const LatLng latLng { 10, -100 };
transform.setLatLngZoom(latLng, 10);
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.getAngle());
const optional<ScreenCoordinate> invalidAnchorPoint {};
const ScreenCoordinate anchorPoint = { 150, 150 };
const LatLng anchorLatLng = transform.getState().screenCoordinateToLatLng(anchorPoint);
ASSERT_NE(latLng.latitude(), anchorLatLng.latitude());
ASSERT_NE(latLng.longitude(), anchorLatLng.longitude());
transform.setLatLngZoom(latLng, 2);
transform.setZoom(3);
ASSERT_DOUBLE_EQ(3, transform.getZoom());
ASSERT_DOUBLE_EQ(latLng.latitude(), transform.getLatLng().latitude());
ASSERT_DOUBLE_EQ(latLng.longitude(), transform.getLatLng().longitude());
transform.setZoom(3.5, invalidAnchorPoint);
ASSERT_DOUBLE_EQ(3.5, transform.getZoom());
ASSERT_DOUBLE_EQ(latLng.latitude(), transform.getLatLng().latitude());
ASSERT_DOUBLE_EQ(latLng.longitude(), transform.getLatLng().longitude());
transform.setZoom(5.5, anchorPoint);
ASSERT_DOUBLE_EQ(5.5, transform.getZoom());
ASSERT_NE(latLng.latitude(), transform.getLatLng().latitude());
ASSERT_NE(latLng.longitude(), transform.getLatLng().longitude());
transform.setLatLngZoom(latLng, 10);
transform.setZoom(3);
ASSERT_DOUBLE_EQ(3, transform.getZoom());
ASSERT_NEAR(latLng.latitude(), transform.getLatLng().latitude(), 0.000001);
ASSERT_NEAR(latLng.longitude(), transform.getLatLng().longitude(), 0.000001);
transform.setZoom(5, invalidAnchorPoint);
ASSERT_DOUBLE_EQ(5, transform.getZoom());
ASSERT_NEAR(latLng.latitude(), transform.getLatLng().latitude(), 0.000001);
ASSERT_NEAR(latLng.longitude(), transform.getLatLng().longitude(), 0.000001);
transform.setZoom(7, anchorPoint);
ASSERT_DOUBLE_EQ(7, transform.getZoom());
ASSERT_NE(latLng.latitude(), transform.getLatLng().latitude());
ASSERT_NE(latLng.longitude(), transform.getLatLng().longitude());
transform.setLatLngZoom(latLng, 10);
transform.setZoom(2);
ASSERT_DOUBLE_EQ(2, transform.getZoom());
ASSERT_NEAR(latLng.latitude(), transform.getLatLng().latitude(), 0.000001);
ASSERT_NEAR(latLng.longitude(), transform.getLatLng().longitude(), 0.000001);
transform.setZoom(4, invalidAnchorPoint);
ASSERT_DOUBLE_EQ(4, transform.getZoom());
ASSERT_NEAR(latLng.latitude(), transform.getLatLng().latitude(), 0.000001);
ASSERT_NEAR(latLng.longitude(), transform.getLatLng().longitude(), 0.000001);
transform.setZoom(8, anchorPoint);
ASSERT_DOUBLE_EQ(8, transform.getZoom());
ASSERT_NE(latLng.latitude(), transform.getLatLng().latitude());
ASSERT_NE(latLng.longitude(), transform.getLatLng().longitude());
transform.setLatLngZoom(latLng, 10);
transform.setAngle(M_PI_4);
ASSERT_NEAR(M_PI_4, transform.getAngle(), 0.000001);
ASSERT_DOUBLE_EQ(latLng.latitude(), transform.getLatLng().latitude());
ASSERT_DOUBLE_EQ(latLng.longitude(), transform.getLatLng().longitude());
transform.setAngle(0, invalidAnchorPoint);
ASSERT_DOUBLE_EQ(0, transform.getAngle());
ASSERT_DOUBLE_EQ(latLng.latitude(), transform.getLatLng().latitude());
ASSERT_DOUBLE_EQ(latLng.longitude(), transform.getLatLng().longitude());
transform.setAngle(45 * util::DEG2RAD, anchorPoint);
ASSERT_NEAR(45 / util::RAD2DEG, transform.getAngle(), 0.000001);
ASSERT_NEAR(anchorLatLng.latitude(), transform.getLatLng().latitude(), 1);
ASSERT_NEAR(anchorLatLng.longitude(), transform.getLatLng().longitude(), 1);
transform.setLatLngZoom(latLng, 10);
transform.setPitch(10 * util::DEG2RAD);
ASSERT_DOUBLE_EQ(10 / util::RAD2DEG, transform.getPitch());
ASSERT_DOUBLE_EQ(latLng.latitude(), transform.getLatLng().latitude());
ASSERT_DOUBLE_EQ(latLng.longitude(), transform.getLatLng().longitude());
transform.setPitch(15 * util::DEG2RAD, invalidAnchorPoint);
ASSERT_DOUBLE_EQ(15 / util::RAD2DEG, transform.getPitch());
ASSERT_DOUBLE_EQ(latLng.latitude(), transform.getLatLng().latitude());
ASSERT_DOUBLE_EQ(latLng.longitude(), transform.getLatLng().longitude());
transform.setPitch(20 * util::DEG2RAD, anchorPoint);
ASSERT_DOUBLE_EQ(20 / util::RAD2DEG, transform.getPitch());
ASSERT_NEAR(anchorLatLng.latitude(), transform.getLatLng().latitude(), 1);
ASSERT_NEAR(anchorLatLng.longitude(), transform.getLatLng().longitude(), 1);
}
TEST(Transform, Padding) {
Transform transform;
transform.resize({ 1000, 1000 });
ASSERT_DOUBLE_EQ(0, transform.getLatLng().latitude());
ASSERT_DOUBLE_EQ(0, transform.getLatLng().longitude());
transform.setLatLngZoom({ 10, -100 }, 10);
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 manualShiftedCenter = transform.getState().screenCoordinateToLatLng({
1000.0 / 2.0,
1000.0 / 4.0,
});
EdgeInsets padding(1000.0 / 2.0, 0, 0, 0);
const LatLng shiftedCenter = transform.getLatLng(padding);
ASSERT_NE(trueCenter.latitude(), shiftedCenter.latitude());
ASSERT_NEAR(trueCenter.longitude(), shiftedCenter.longitude(), 1e-9);
ASSERT_DOUBLE_EQ(manualShiftedCenter.latitude(), shiftedCenter.latitude());
ASSERT_DOUBLE_EQ(manualShiftedCenter.longitude(), shiftedCenter.longitude());
}
TEST(Transform, MoveBy) {
Transform transform;
transform.resize({ 1000, 1000 });
transform.setLatLngZoom({ 0, 0 }, 10);
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(), 0.0001);
ASSERT_NEAR(coordinate.longitude(), trueCenter.longitude(), 0.0001);
}
// We have ~1.1 precision loss for each coordinate for 20 rounds of moveBy.
ASSERT_NEAR(0, trueCenter.latitude(), 1.1);
ASSERT_NEAR(0, trueCenter.longitude(), 1.1);
}
TEST(Transform, Antimeridian) {
Transform transform;
transform.resize({ 1000, 1000 });
transform.setLatLngZoom({ 0, 0 }, 1);
// San Francisco
const LatLng coordinateSanFrancisco { 37.7833, -122.4167 };
ScreenCoordinate pixelSF = transform.latLngToScreenCoordinate(coordinateSanFrancisco);
ASSERT_NEAR(151.79409149185352, pixelSF.x, 1e-2);
ASSERT_NEAR(383.76774094913071, pixelSF.y, 1e-2);
transform.setLatLng({ 0, -181 });
ScreenCoordinate pixelSFLongest = transform.latLngToScreenCoordinate(coordinateSanFrancisco);
ASSERT_NEAR(-357.36306616412816, pixelSFLongest.x, 1e-2);
ASSERT_DOUBLE_EQ(pixelSF.y, pixelSFLongest.y);
LatLng unwrappedSF = coordinateSanFrancisco.wrapped();
unwrappedSF.unwrapForShortestPath(transform.getLatLng());
ScreenCoordinate pixelSFShortest = transform.latLngToScreenCoordinate(unwrappedSF);
ASSERT_NEAR(666.63617954008976, pixelSFShortest.x, 1e-2);
ASSERT_DOUBLE_EQ(pixelSF.y, pixelSFShortest.y);
transform.setLatLng({ 0, 179 });
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.setLatLngZoom(coordinateWaikiri, 10);
ScreenCoordinate pixelWaikiri = transform.latLngToScreenCoordinate(coordinateWaikiri);
ASSERT_NEAR(500, pixelWaikiri.x, 1e-2);
ASSERT_NEAR(500, pixelWaikiri.y, 1e-2);
transform.setLatLng({ coordinateWaikiri.latitude(), 180.0213 });
ScreenCoordinate pixelWaikiriLongest = transform.latLngToScreenCoordinate(coordinateWaikiri);
ASSERT_NEAR(524725.96438108233, pixelWaikiriLongest.x, 1e-2);
ASSERT_DOUBLE_EQ(pixelWaikiri.y, pixelWaikiriLongest.y);
LatLng unwrappedWaikiri = coordinateWaikiri.wrapped();
unwrappedWaikiri.unwrapForShortestPath(transform.getLatLng());
ScreenCoordinate pixelWaikiriShortest = transform.latLngToScreenCoordinate(unwrappedWaikiri);
ASSERT_NEAR(437.95953728819512, pixelWaikiriShortest.x, 1e-2);
ASSERT_DOUBLE_EQ(pixelWaikiri.y, pixelWaikiriShortest.y);
LatLng coordinateFromPixel = transform.screenCoordinateToLatLng(pixelWaikiriLongest);
ASSERT_NEAR(coordinateWaikiri.latitude(), coordinateFromPixel.latitude(), 0.000001);
ASSERT_NEAR(coordinateWaikiri.longitude(), coordinateFromPixel.longitude(), 0.000001);
transform.setLatLng({ coordinateWaikiri.latitude(), -179.9787 });
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(), 0.000001);
ASSERT_NEAR(coordinateWaikiri.longitude(), coordinateFromPixel.longitude(), 0.000001);
}
TEST(Transform, Camera) {
Transform transform;
transform.resize({ 1000, 1000 });
const LatLng latLng1 { 45, 135 };
CameraOptions cameraOptions1;
cameraOptions1.zoom = 20;
cameraOptions1.center = latLng1;
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;
cameraOptions2.zoom = 10;
cameraOptions2.center = latLng2;
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_NEAR(latLng1.latitude(), transform.getLatLng().latitude(), 0.000001);
ASSERT_NEAR(latLng1.longitude(), transform.getLatLng().longitude(), 0.000001);
ASSERT_NEAR(20, transform.getZoom(), 0.000001);
};
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().longitude());
};
flyOptions.transitionFinishFn = [&]() {
// XXX Fix precision loss in flyTo:
// https://github.com/mapbox/mapbox-gl-native/issues/4298
ASSERT_NEAR(latLng2.latitude(), transform.getLatLng().latitude(), 0.001);
ASSERT_NEAR(latLng2.longitude(), transform.getLatLng().longitude(), 0.001);
ASSERT_NEAR(10, transform.getZoom(), 0.00001);
};
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());
}
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-5);
ASSERT_NEAR(latLng.longitude(), nullIsland.longitude(), 1e-5);
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.setLatLngZoom({ 0, 0 }, transform.getState().getMaxZoom());
// Default bounds.
ASSERT_EQ(transform.getState().getLatLngBounds(), optional<LatLngBounds> {});
ASSERT_EQ(transform.getLatLng(), nullIsland);
// Invalid bounds.
try {
transform.setLatLngBounds(LatLngBounds::empty());
ASSERT_TRUE(false) << "Should throw";
} catch (...) {
ASSERT_EQ(transform.getState().getLatLngBounds(), optional<LatLngBounds> {});
}
transform.setLatLng(sanFrancisco);
ASSERT_EQ(transform.getLatLng(), sanFrancisco);
// Single location.
transform.setLatLngBounds(LatLngBounds::singleton(sanFrancisco));
ASSERT_EQ(transform.getLatLng(), sanFrancisco);
transform.setLatLngBounds(LatLngBounds::hull({ -90.0, -180.0 }, { 0.0, 180.0 }));
transform.setLatLng(sanFrancisco);
ASSERT_EQ(transform.getLatLng().latitude(), 0.0);
ASSERT_EQ(transform.getLatLng().longitude(), sanFrancisco.longitude());
transform.setLatLngBounds(LatLngBounds::hull({ -90.0, 0.0 }, { 90.0, 180.0 }));
transform.setLatLng(sanFrancisco);
ASSERT_EQ(transform.getLatLng().latitude(), sanFrancisco.latitude());
ASSERT_EQ(transform.getLatLng().longitude(), 0.0);
transform.setLatLngBounds(LatLngBounds::hull({ -90.0, 0.0 }, { 0.0, 180.0 }));
transform.setLatLng(sanFrancisco);
ASSERT_EQ(transform.getLatLng().latitude(), 0.0);
ASSERT_EQ(transform.getLatLng().longitude(), 0.0);
}
TEST(Transform, PitchBounds) {
Transform transform;
transform.resize({ 1000, 1000 });
transform.setLatLngZoom({ 0, 0 }, transform.getState().getMaxZoom());
ASSERT_DOUBLE_EQ(transform.getState().getPitch() * util::RAD2DEG, 0.0);
ASSERT_DOUBLE_EQ(transform.getState().getMinPitch() * util::RAD2DEG, 0.0);
ASSERT_DOUBLE_EQ(transform.getState().getMaxPitch() * util::RAD2DEG, 60.0);
transform.setMinPitch(45.0 * util::DEG2RAD);
transform.setPitch(0.0 * util::DEG2RAD);
ASSERT_NEAR(transform.getState().getPitch() * util::RAD2DEG, 45.0, 1e-5);
transform.setMaxPitch(55.0 * util::DEG2RAD);
transform.setPitch(60.0 * util::DEG2RAD);
ASSERT_NEAR(transform.getState().getPitch() * util::RAD2DEG, 55.0, 1e-5);
}
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