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Diffstat (limited to 'test/map/transform.test.cpp')
| -rw-r--r-- | test/map/transform.test.cpp | 516 |
1 files changed, 516 insertions, 0 deletions
diff --git a/test/map/transform.test.cpp b/test/map/transform.test.cpp new file mode 100644 index 0000000000..afb655abca --- /dev/null +++ b/test/map/transform.test.cpp @@ -0,0 +1,516 @@ +#include <mbgl/test/util.hpp> + +#include <mbgl/map/transform.hpp> +#include <mbgl/util/geo.hpp> + +using namespace mbgl; + +TEST(Transform, InvalidScale) { + Transform transform; + + ASSERT_DOUBLE_EQ(0, transform.getLatLng().latitude); + ASSERT_DOUBLE_EQ(0, transform.getLatLng().longitude); + ASSERT_DOUBLE_EQ(1, transform.getScale()); + + transform.setScale(2 << 0); + + ASSERT_DOUBLE_EQ(0, transform.getLatLng().latitude); + ASSERT_DOUBLE_EQ(0, transform.getLatLng().longitude); + ASSERT_DOUBLE_EQ(2, transform.getScale()); + + const double invalid = std::nan(""); + transform.setScale(invalid); + + ASSERT_DOUBLE_EQ(0, transform.getLatLng().latitude); + ASSERT_DOUBLE_EQ(0, transform.getLatLng().longitude); + ASSERT_DOUBLE_EQ(2, transform.getScale()); + + transform.scaleBy(invalid); + + ASSERT_DOUBLE_EQ(0, transform.getLatLng().latitude); + ASSERT_DOUBLE_EQ(0, transform.getLatLng().longitude); + ASSERT_DOUBLE_EQ(2, transform.getScale()); + + transform.setZoom(invalid); + + ASSERT_DOUBLE_EQ(0, transform.getLatLng().latitude); + ASSERT_DOUBLE_EQ(0, transform.getLatLng().longitude); + ASSERT_DOUBLE_EQ(2, transform.getScale()); + + transform.setLatLngZoom({ 0, 0 }, invalid); + + ASSERT_DOUBLE_EQ(0, transform.getLatLng().latitude); + ASSERT_DOUBLE_EQ(0, transform.getLatLng().longitude); + ASSERT_DOUBLE_EQ(2, transform.getScale()); +} + +TEST(Transform, InvalidLatLng) { + Transform transform; + + ASSERT_DOUBLE_EQ(0, transform.getLatLng().latitude); + ASSERT_DOUBLE_EQ(0, transform.getLatLng().longitude); + ASSERT_DOUBLE_EQ(1, transform.getScale()); + + transform.setScale(2 << 0); + transform.setLatLng({ 8, 10 }); + + ASSERT_DOUBLE_EQ(8, transform.getLatLng().latitude); + ASSERT_DOUBLE_EQ(10, transform.getLatLng().longitude); + ASSERT_DOUBLE_EQ(2, transform.getScale()); + + transform.setLatLngZoom({ 10, 8 }, 2); + + ASSERT_DOUBLE_EQ(10, transform.getLatLng().latitude); + ASSERT_DOUBLE_EQ(8, transform.getLatLng().longitude); + ASSERT_DOUBLE_EQ(4, transform.getScale()); + + const double invalid = std::nan(""); + transform.setLatLngZoom({ invalid, 8 }, 2); + + ASSERT_DOUBLE_EQ(10, transform.getLatLng().latitude); + ASSERT_DOUBLE_EQ(8, transform.getLatLng().longitude); + ASSERT_DOUBLE_EQ(4, transform.getScale()); + + transform.setLatLngZoom({ 10, invalid }, 2); + + ASSERT_DOUBLE_EQ(10, transform.getLatLng().latitude); + ASSERT_DOUBLE_EQ(8, transform.getLatLng().longitude); + ASSERT_DOUBLE_EQ(4, transform.getScale()); +} + + +TEST(Transform, InvalidBearing) { + Transform transform; + + ASSERT_DOUBLE_EQ(0, transform.getLatLng().latitude); + ASSERT_DOUBLE_EQ(0, transform.getLatLng().longitude); + ASSERT_DOUBLE_EQ(1, transform.getScale()); + + transform.setScale(2 << 0); + transform.setAngle(2); + + ASSERT_DOUBLE_EQ(0, transform.getLatLng().latitude); + ASSERT_DOUBLE_EQ(0, transform.getLatLng().longitude); + ASSERT_DOUBLE_EQ(2, transform.getScale()); + 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(2, transform.getScale()); + ASSERT_DOUBLE_EQ(2, transform.getAngle()); +} + +TEST(Transform, PerspectiveProjection) { + LatLng loc; + + Transform transform; + transform.resize({{ 1000, 1000 }}); + transform.setScale(2 << 9); + 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.setScale(2 << 9); + 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 wrappedForwards = state.screenCoordinateToLatLng(state.latLngToScreenCoordinate({ 38, 283 })); + ASSERT_NEAR(wrappedForwards.latitude, 37.999999999999716, 0.0001); // 2.84E-13 + ASSERT_NEAR(wrappedForwards.longitude, 282.99999999988751, 0.0001); // 1.1249E-11 + wrappedForwards.wrap(); + ASSERT_NEAR(wrappedForwards.longitude, -77.000000000112493, 0.001); // 1.1249E-11 + + LatLng wrappedBackwards = state.screenCoordinateToLatLng(state.latLngToScreenCoordinate({ 38, -437 })); + ASSERT_NEAR(wrappedBackwards.latitude, wrappedForwards.latitude, 0.001); + ASSERT_NEAR(wrappedBackwards.longitude, -436.99999999988728, 0.001); // 1.1272E-11 + wrappedBackwards.wrap(); + ASSERT_NEAR(wrappedBackwards.longitude, -76.99999999988728, 0.001); // 1.1272E-11 +} + +TEST(Transform, ConstrainHeightOnly) { + LatLng loc; + + Transform transform; + transform.resize({{ 1000, 1000 }}); + transform.setScale(std::pow(2, 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(nullptr, ConstrainMode::WidthAndHeight); + transform.resize({{ 1000, 1000 }}); + transform.setScale(std::pow(2, 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.scaleBy(1); + ASSERT_DOUBLE_EQ(4, transform.getScale()); + ASSERT_DOUBLE_EQ(latLng.latitude, transform.getLatLng().latitude); + ASSERT_DOUBLE_EQ(latLng.longitude, transform.getLatLng().longitude); + + transform.scaleBy(1.5, invalidAnchorPoint); + ASSERT_DOUBLE_EQ(6, transform.getScale()); + ASSERT_DOUBLE_EQ(latLng.latitude, transform.getLatLng().latitude); + ASSERT_DOUBLE_EQ(latLng.longitude, transform.getLatLng().longitude); + + transform.scaleBy(2, anchorPoint); + ASSERT_DOUBLE_EQ(12, transform.getScale()); + ASSERT_NE(latLng.latitude, transform.getLatLng().latitude); + ASSERT_NE(latLng.longitude, transform.getLatLng().longitude); + + transform.setLatLngZoom(latLng, 10); + transform.setScale(2 << 2); + ASSERT_DOUBLE_EQ(2 << 2, transform.getScale()); + ASSERT_NEAR(latLng.latitude, transform.getLatLng().latitude, 0.000001); + ASSERT_NEAR(latLng.longitude, transform.getLatLng().longitude, 0.000001); + + transform.setScale(2 << 4, invalidAnchorPoint); + ASSERT_DOUBLE_EQ(2 << 4, transform.getScale()); + ASSERT_NEAR(latLng.latitude, transform.getLatLng().latitude, 0.000001); + ASSERT_NEAR(latLng.longitude, transform.getLatLng().longitude, 0.000001); + + transform.setScale(2 << 6, anchorPoint); + ASSERT_DOUBLE_EQ(2 << 6, transform.getScale()); + 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; + + padding.top = 0; + ASSERT_FALSE(bool(padding)); + + padding.top = NAN; + ASSERT_FALSE(bool(padding)); + + padding.top = 1000.0 / 2.0; + ASSERT_TRUE(bool(padding)); + + const LatLng shiftedCenter = transform.getLatLng(padding); + ASSERT_NE(trueCenter.latitude, shiftedCenter.latitude); + ASSERT_DOUBLE_EQ(trueCenter.longitude, shiftedCenter.longitude); + 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); + + const LatLng coordinateSanFrancisco { 37.7833, -122.4167 }; + ScreenCoordinate pixelSF = transform.latLngToScreenCoordinate(coordinateSanFrancisco); + ASSERT_DOUBLE_EQ(151.79409149185352, pixelSF.x); + ASSERT_DOUBLE_EQ(383.76774094913071, pixelSF.y); + + transform.setLatLng({ 0, -181 }); + ScreenCoordinate pixelSFBackwards = transform.latLngToScreenCoordinate(coordinateSanFrancisco); + ASSERT_DOUBLE_EQ(666.63617954008976, pixelSFBackwards.x); + ASSERT_DOUBLE_EQ(pixelSF.y, pixelSFBackwards.y); + + transform.setLatLng({ 0, 179 }); + ScreenCoordinate pixelSFForwards = transform.latLngToScreenCoordinate(coordinateSanFrancisco); + ASSERT_DOUBLE_EQ(pixelSFBackwards.x, pixelSFForwards.x); + ASSERT_DOUBLE_EQ(pixelSFBackwards.y, pixelSFForwards.y); + + const LatLng coordinateWaikiri{ -16.9310, 179.9787 }; + transform.setLatLngZoom(coordinateWaikiri, 10); + ScreenCoordinate pixelWaikiri = transform.latLngToScreenCoordinate(coordinateWaikiri); + ASSERT_DOUBLE_EQ(500.00000000007759, pixelWaikiri.x); + ASSERT_DOUBLE_EQ(500, pixelWaikiri.y); + + transform.setLatLng({ coordinateWaikiri.latitude, 180.0213 }); + ScreenCoordinate pixelWaikiriForwards = transform.latLngToScreenCoordinate(coordinateWaikiri); + ASSERT_DOUBLE_EQ(437.95953728819512, pixelWaikiriForwards.x); + ASSERT_DOUBLE_EQ(pixelWaikiri.y, pixelWaikiriForwards.y); + LatLng coordinateFromPixel = transform.screenCoordinateToLatLng(pixelWaikiriForwards); + ASSERT_NEAR(coordinateWaikiri.latitude, coordinateFromPixel.latitude, 0.000001); + ASSERT_NEAR(coordinateWaikiri.longitude, coordinateFromPixel.longitude, 0.000001); + + transform.setLatLng({ coordinateWaikiri.latitude, -179.9787 }); + ScreenCoordinate pixelWaikiriBackwards = transform.latLngToScreenCoordinate(coordinateWaikiri); + ASSERT_DOUBLE_EQ(pixelWaikiriForwards.x, pixelWaikiriBackwards.x); + ASSERT_DOUBLE_EQ(pixelWaikiriForwards.y, pixelWaikiriBackwards.y); + coordinateFromPixel = transform.screenCoordinateToLatLng(pixelWaikiriBackwards); + 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) { + Transform transform; + const TransformState& state = transform.getState(); + + LatLng nullIsland, latLng = {}; + ScreenCoordinate center, point = {}; + const uint16_t min = std::numeric_limits<uint16_t>::min(); + const uint16_t max = std::numeric_limits<uint16_t>::max(); + + auto testConversions = [&](const LatLng& coord, const ScreenCoordinate& screenCoord) { + latLng = state.screenCoordinateToLatLng(center); + ASSERT_NEAR(latLng.latitude, coord.latitude, 0.000001); + ASSERT_NEAR(latLng.longitude, coord.longitude, 0.000001); + point = state.latLngToScreenCoordinate(nullIsland); + ASSERT_DOUBLE_EQ(point.x, screenCoord.x); + ASSERT_DOUBLE_EQ(point.y, screenCoord.y); + }; + + testConversions(nullIsland, center); + + // Cannot assign the current size. + ASSERT_FALSE(transform.resize({{}})); + + ASSERT_TRUE(transform.resize({{ min, max }})); + testConversions(nullIsland, center); + + ASSERT_TRUE(transform.resize({{ max, min }})); + testConversions(nullIsland, center); + + ASSERT_TRUE(transform.resize({{ min, min }})); + testConversions(nullIsland, center); + + center = { max / 2., max / 2. }; + + // -1 evaluates to UINT_MAX. + ASSERT_TRUE(transform.resize({{ static_cast<uint16_t>(-1), static_cast<uint16_t>(-1) }})); + ASSERT_FALSE(transform.resize({{ max, max }})); + testConversions(nullIsland, center); +} |