| public static NormLonDEG ( double lon_deg ) : double | ||
| lon_deg | double | |
| Результат | double | |
public virtual void TestNormLon()
{
var lons = new double[][]
{
new double[] { 1.23, 1.23 },
//1.23 might become 1.2299999 after some math and we want to ensure that doesn't happen
new double[] { -180, -180 },
new double[] { 180, +180 },
new double[] { 0, 0 },
new double[] { -190, 170 },
new double[] { 181, -179 },
new double[] { -180 - 360, -180 },
new double[] { -180 - 720, -180 },
new double[] { 180 + 360, +180 },
new double[] { 180 + 720, +180 }
};
foreach (var pair in lons)
{
CustomAssert.EqualWithDelta( /*"input "+pair[0],*/
pair[1], DistanceUtils.NormLonDEG(pair[0]), double.Epsilon);
}
var random = new Random(RandomSeed.Seed());
for (int i = -1000; i < 1000; i += random.Next(9) * 10)
{
double d = DistanceUtils.NormLonDEG(i);
Assert.True(d >= -180 && d <= 180, i + " " + d);
}
}
private void TestDistCalcPointOnBearing(double distKm)
{
for (int angDEG = 0; angDEG < 360; angDEG += random.Next(1, 20 + 1))
{
IPoint c = ctx.MakePoint(
DistanceUtils.NormLonDEG(random.Next(359 + 1)),
random.Next(-90, 90 + 1));
//0 distance means same point
IPoint p2 = Dc().PointOnBearing(c, 0, angDEG, ctx, null);
Assert.Equal(c, p2);
p2 = Dc().PointOnBearing(c, distKm * DistanceUtils.KM_TO_DEG, angDEG, ctx, null);
double calcDistKm = Dc().Distance(c, p2) * DistanceUtils.DEG_TO_KM;
AssertEqualsRatio(distKm, calcDistKm);
}
}