private void AddByScalar()
{
float[] a = new[]
{
1f,
0f,
15f,
2f,
100f,
0.1f,
1234f,
678.234f,
};
const float b = 100f;
float[] r = new[]
{
101f,
100f,
115f,
102f,
200f,
100.1f,
1334f,
778.234f,
};
Span <float> s = stackalloc float[r.Length];
NumericsHelpers.Add(a, b, s);
EqualsApprox(r, s);
}
/// <summary>
/// Divides a source gas mixture into several recipient mixtures, scaled by their relative volumes. Does not
/// modify the source gas mixture. Used for pipe network splitting. Note that the total destination volume
/// may be larger or smaller than the source mixture.
/// </summary>
public void DivideInto(GasMixture source, List <GasMixture> receivers)
{
var totalVolume = 0f;
foreach (var receiver in receivers)
{
if (!receiver.Immutable)
{
totalVolume += receiver.Volume;
}
}
float?sourceHeatCapacity = null;
var buffer = new float[Atmospherics.AdjustedNumberOfGases];
foreach (var receiver in receivers)
{
if (receiver.Immutable)
{
continue;
}
var fraction = receiver.Volume / totalVolume;
// Set temperature, if necessary.
if (MathF.Abs(receiver.Temperature - source.Temperature) > Atmospherics.MinimumTemperatureDeltaToConsider)
{
// Often this divides a pipe net into new and completely empty pipe nets
if (receiver.TotalMoles == 0)
{
receiver.Temperature = source.Temperature;
}
else
{
sourceHeatCapacity ??= GetHeatCapacity(source);
var receiverHeatCapacity = GetHeatCapacity(receiver);
var combinedHeatCapacity = receiverHeatCapacity + sourceHeatCapacity.Value * fraction;
if (combinedHeatCapacity > 0f)
{
receiver.Temperature = (GetThermalEnergy(source, sourceHeatCapacity.Value * fraction) + GetThermalEnergy(receiver, receiverHeatCapacity)) / combinedHeatCapacity;
}
}
}
// transfer moles
NumericsHelpers.Multiply(source.Moles, fraction, buffer);
NumericsHelpers.Add(receiver.Moles, buffer);
}
}
public void Merge(GasMixture receiver, GasMixture giver)
{
if (receiver.Immutable)
{
return;
}
if (MathF.Abs(receiver.Temperature - giver.Temperature) > Atmospherics.MinimumTemperatureDeltaToConsider)
{
var combinedHeatCapacity = GetHeatCapacity(receiver) + GetHeatCapacity(giver);
if (combinedHeatCapacity > 0f)
{
receiver.Temperature = (GetThermalEnergy(giver) + GetThermalEnergy(receiver)) / combinedHeatCapacity;
}
}
NumericsHelpers.Add(receiver.Moles, giver.Moles);
}
private void Add()
{
float[] a = new[]
{
1f,
0f,
1f,
2f,
100f,
0.1f,
1234f,
678.234f,
};
float[] b = new[]
{
1f,
1f,
2f,
2f,
10f,
1f,
4321f,
567.123f,
};
float[] r = new[]
{
2f,
1f,
3f,
4f,
110f,
1.1f,
5555f,
1245.357f,
};
Span <float> s = stackalloc float[r.Length];
NumericsHelpers.Add(a, b, s);
EqualsApprox(r, s);
}
