public void TestSecondsDifference()
{
// Test same standard - both safe
JulianDate first = new JulianDate(2451545.0);
JulianDate second = first + Duration.FromSeconds(120000);
Assert.AreEqual(120000, first.SecondsDifference(second));
Assert.AreEqual((second - first).TotalSeconds, first.SecondsDifference(second));
//Test same standard - both unsafe
first = new JulianDate(2451545.0, TimeStandard.CoordinatedUniversalTime);
second = first + Duration.FromSeconds(120000);
second = new JulianDate(second.Day, second.SecondsOfDay, TimeStandard.CoordinatedUniversalTime);
Assert.AreEqual(120000, first.SecondsDifference(second));
Assert.AreEqual((second - first).TotalSeconds, first.SecondsDifference(second));
// Test diff standard - one unsafe, one safe
first = new JulianDate(2451545.0);
second = first + Duration.FromSeconds(120000);
JulianDate secondDiffStandard = second.ToTimeStandard(TimeStandard.CoordinatedUniversalTime);
Assert.AreEqual(120000, first.SecondsDifference(secondDiffStandard));
Assert.AreEqual((secondDiffStandard - first).TotalSeconds, first.SecondsDifference(secondDiffStandard));
first = JulianDate.MinValue;
second = JulianDate.MaxValue;
Assert.AreEqual(((long)int.MaxValue - int.MinValue) * TimeConstants.SecondsPerDay, first.SecondsDifference(second));
}
/// <summary>
/// Writes the time-tagged <see cref="UnitQuaternion"/> collection as an array in
/// [Time, X, Y, Z, W] order.
/// Times are epoch seconds since an epoch that is determined from the first date to be written.
/// The epoch property is written as well.
/// </summary>
/// <param name="output">The stream to which to write the array.</param>
/// <param name="propertyName">The name of the property to write.</param>
/// <param name="dates">The dates at which the value is specified.</param>
/// <param name="values">The corresponding value for each date.</param>
/// <param name="startIndex">The index of the first element to use in the <paramref name="values"/> collection.</param>
/// <param name="length">The number of elements to use from the <paramref name="values"/> collection.</param>
public static void WriteUnitQuaternion(CesiumOutputStream output, string propertyName, IList <JulianDate> dates, IList <UnitQuaternion> values, int startIndex, int length)
{
if (dates.Count != values.Count)
{
throw new ArgumentException(CesiumLocalization.MismatchedNumberOfDatesAndValues, "values");
}
JulianDate epoch = GetAndWriteEpoch(output, dates, startIndex, length);
output.WritePropertyName(propertyName);
output.WriteStartSequence();
int last = startIndex + length;
for (int i = startIndex; i < last; ++i)
{
output.WriteValue(epoch.SecondsDifference(dates[i]));
UnitQuaternion quaternion = values[i];
output.WriteValue(quaternion.X);
output.WriteValue(quaternion.Y);
output.WriteValue(quaternion.Z);
output.WriteValue(quaternion.W);
output.WriteLineBreak();
}
output.WriteEndSequence();
}
/// <summary>
/// Writes time-tagged <see cref="Cartographic"/> values as an array in [Time, Longitude, Latitude, Height] order.
/// Times are epoch seconds since an epoch that is determined from the first date to be written.
/// The epoch property is written as well.
/// </summary>
/// <param name="output">The stream to which to write the array.</param>
/// <param name="propertyName">The name of the property to write.</param>
/// <param name="dates">The dates at which the value is specified.</param>
/// <param name="values">The corresponding value for each date.</param>
/// <param name="startIndex">The index of the first element to use in the <paramref name="values"/> collection.</param>
/// <param name="length">The number of elements to use from the <paramref name="values"/> collection.</param>
public static void WriteCartographic(CesiumOutputStream output, string propertyName, IList <JulianDate> dates, IList <Cartographic> values, int startIndex, int length)
{
if (dates.Count != values.Count)
{
throw new ArgumentException(CesiumLocalization.MismatchedNumberOfDatesAndValues, "values");
}
JulianDate epoch = GetAndWriteEpoch(output, dates, startIndex, length);
output.WritePropertyName(propertyName);
output.WriteStartSequence();
int last = startIndex + length;
for (int i = startIndex; i < last; ++i)
{
output.WriteValue(epoch.SecondsDifference(dates[i]));
Cartographic value = values[i];
output.WriteValue(value.Longitude);
output.WriteValue(value.Latitude);
output.WriteValue(value.Height);
output.WriteLineBreak();
}
output.WriteEndSequence();
}
/// <summary>
/// Writes time-tagged <see cref="Motion<Cartesian>"/> values as an array in [Time, X, Y, Z, vX, vY, vZ] order.
/// Times are epoch seconds since an epoch that is determined from the first date to be written.
/// The epoch property is written as well.
/// </summary>
/// <param name="output">The stream to which to write the array.</param>
/// <param name="propertyName">The name of the property to write.</param>
/// <param name="dates">The dates at which the value is specified.</param>
/// <param name="values">The corresponding value for each date.</param>
/// <param name="startIndex">The index of the first element to use in the <paramref name="values"/> collection.</param>
/// <param name="length">The number of elements to use from the <paramref name="values"/> collection.</param>
public static void WriteCartesian3Velocity(CesiumOutputStream output, string propertyName, IList <JulianDate> dates, IList <Motion <Cartesian> > values, int startIndex, int length)
{
if (dates.Count != values.Count)
{
throw new ArgumentException(CesiumLocalization.MismatchedNumberOfDatesAndValues, "values");
}
JulianDate epoch = GetAndWriteEpoch(output, dates, startIndex, length);
output.WritePropertyName(propertyName);
output.WriteStartSequence();
int last = startIndex + length;
for (int i = startIndex; i < last; ++i)
{
output.WriteValue(epoch.SecondsDifference(dates[i]));
Cartesian value = values[i].Value;
Cartesian velocity = values[i].FirstDerivative;
output.WriteValue(value.X);
output.WriteValue(value.Y);
output.WriteValue(value.Z);
output.WriteValue(velocity.X);
output.WriteValue(velocity.Y);
output.WriteValue(velocity.Z);
output.WriteLineBreak();
}
output.WriteEndSequence();
}
public void TestSecondsDifferenceAtLeapSecond()
{
JulianDate leapSecond = new JulianDate(2453736, 43232, TimeStandard.InternationalAtomicTime);
JulianDate utcDate = new JulianDate(2453736, 43232, TimeStandard.CoordinatedUniversalTime);
Assert.AreEqual(-33, utcDate.SecondsDifference(leapSecond));
Assert.AreEqual(33, leapSecond.SecondsDifference(utcDate));
JulianDate secondBeforeLeapSecondUTC = leapSecond.SubtractSeconds(1).ToTimeStandard(TimeStandard.CoordinatedUniversalTime);
JulianDate secondAfterLeapSecondUTC = leapSecond.AddSeconds(1).ToTimeStandard(TimeStandard.CoordinatedUniversalTime);
Assert.AreEqual(2, secondBeforeLeapSecondUTC.SecondsDifference(secondAfterLeapSecondUTC));
Assert.AreEqual(2, secondAfterLeapSecondUTC.Subtract(secondBeforeLeapSecondUTC).Seconds);
}
public void TestSecondsDifferenceAtLeapSecond()
{
JulianDate leapSecond = new JulianDate(2453736, 43232, TimeStandard.InternationalAtomicTime);
JulianDate utcDate = new JulianDate(2453736, 43232, TimeStandard.CoordinatedUniversalTime);
Assert.AreEqual(-33, utcDate.SecondsDifference(leapSecond));
Assert.AreEqual(33, leapSecond.SecondsDifference(utcDate));
JulianDate secondBeforeLeapSecondUTC = leapSecond.SubtractSeconds(1).ToTimeStandard(TimeStandard.CoordinatedUniversalTime);
JulianDate secondAfterLeapSecondUTC = leapSecond.AddSeconds(1).ToTimeStandard(TimeStandard.CoordinatedUniversalTime);
Assert.AreEqual(2, secondBeforeLeapSecondUTC.SecondsDifference(secondAfterLeapSecondUTC));
Assert.AreEqual(2, secondAfterLeapSecondUTC.Subtract(secondBeforeLeapSecondUTC).Seconds);
}
public void TestSecondsDifference()
{
// Test same standard - both safe
JulianDate first = new JulianDate(2451545.0);
JulianDate second = first + Duration.FromSeconds(120000);
Assert.AreEqual(120000, first.SecondsDifference(second));
Assert.AreEqual((second - first).TotalSeconds, first.SecondsDifference(second));
//Test same standard - both unsafe
first = new JulianDate(2451545.0, TimeStandard.CoordinatedUniversalTime);
second = first + Duration.FromSeconds(120000);
second = new JulianDate(second.Day, second.SecondsOfDay, TimeStandard.CoordinatedUniversalTime);
Assert.AreEqual(120000, first.SecondsDifference(second));
Assert.AreEqual((second - first).TotalSeconds, first.SecondsDifference(second));
// Test diff standard - one unsafe, one safe
first = new JulianDate(2451545.0);
second = first + Duration.FromSeconds(120000);
JulianDate secondDiffStandard = second.ToTimeStandard(TimeStandard.CoordinatedUniversalTime);
Assert.AreEqual(120000, first.SecondsDifference(secondDiffStandard));
Assert.AreEqual((secondDiffStandard - first).TotalSeconds, first.SecondsDifference(secondDiffStandard));
}