40 lines
1.1 KiB
C++
40 lines
1.1 KiB
C++
#include <gtest/gtest.h>
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#include <cmath>
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#include "geo/GeoLocalFrame.hpp"
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using geopro::core::GeoLocalFrame;
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namespace {
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constexpr double kPi = 3.14159265358979323846;
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}
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// 原点投影到 (0,0)。
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TEST(GeoFrame, OriginMapsToZero) {
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GeoLocalFrame f(22.5, 114.16);
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auto p = f.toLocal(22.5, 114.16);
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EXPECT_NEAR(p.x, 0.0, 1e-9);
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EXPECT_NEAR(p.y, 0.0, 1e-9);
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}
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// 东向 0.01 度经度：x>0，约 0.01*111320*cos(22.5°)≈1028m（5% 容差）。
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TEST(GeoFrame, EastwardLongitudeGivesPositiveX) {
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GeoLocalFrame f(22.5, 114.16);
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auto p = f.toLocal(22.5, 114.17);
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const double expected = 0.01 * 111320.0 * std::cos(22.5 * kPi / 180.0);
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EXPECT_GT(p.x, 0.0);
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EXPECT_NEAR(p.x, expected, expected * 0.05);
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EXPECT_NEAR(p.y, 0.0, 1e-9);
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}
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// 北向 0.01 度纬度：y≈0.01*110540≈1105m（5% 容差）。
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TEST(GeoFrame, NorthwardLatitudeGivesPositiveY) {
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GeoLocalFrame f(22.5, 114.16);
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auto p = f.toLocal(22.51, 114.16);
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const double expected = 0.01 * 110540.0;
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EXPECT_GT(p.y, 0.0);
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EXPECT_NEAR(p.y, expected, expected * 0.05);
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EXPECT_NEAR(p.x, 0.0, 1e-9);
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}
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