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39 lines
1.2 KiB
C++
39 lines
1.2 KiB
C++
#include "testing/testing.hpp"
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#include "geometry/area_on_earth.hpp"
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#include "geometry/distance_on_sphere.hpp"
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#include "geometry/mercator.hpp"
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#include "base/math.hpp"
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#include <iostream>
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UNIT_TEST(AreaOnEarth_Circle)
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{
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double const kEarthSurfaceArea = 4.0 * math::pi * ms::kEarthRadiusMeters * ms::kEarthRadiusMeters;
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TEST_ALMOST_EQUAL_ABS(ms::CircleAreaOnEarth(math::pi * ms::kEarthRadiusMeters),
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kEarthSurfaceArea,
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1e-1, ());
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TEST_ALMOST_EQUAL_ABS(ms::CircleAreaOnEarth(2.0 /* radiusMeters */),
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math::pi * 2.0 * 2.0,
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1e-2, ());
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TEST_ALMOST_EQUAL_ABS(ms::CircleAreaOnEarth(2000.0 /* radiusMeters */),
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math::pi * 2000.0 * 2000.0,
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1.0, ());
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}
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UNIT_TEST(AreaOnEarth_ThreePoints)
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{
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double const kEarthSurfaceArea = 4.0 * math::pi * ms::kEarthRadiusMeters * ms::kEarthRadiusMeters;
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TEST_ALMOST_EQUAL_ABS(ms::AreaOnEarth({90.0, 0.0}, {0.0, 0.0}, {0.0, 90.0}),
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kEarthSurfaceArea / 8.0,
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1e-1, ());
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TEST_ALMOST_EQUAL_ABS(ms::AreaOnEarth({90.0, 0.0}, {0.0, 90.0}, {0.0, -90.0}),
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kEarthSurfaceArea / 4.0,
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1e-1, ());
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}
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