static PopulationLayout ToLayout(PopulationSummary s)
{
var width_i = (int)Math.Round(PopulationBarWidth * ((double)s.Infectious / s.Total), MidpointRounding.AwayFromZero);
var width_r = (int)Math.Round(PopulationBarWidth * ((double)s.Recovered / s.Total), MidpointRounding.AwayFromZero);
return(new PopulationLayout
{
SusceptibleWidth = PopulationBarWidth - width_i - width_r,
InfectiousWidth = width_i,
RecoveredWidth = width_r,
});
}
public MainViewModel()
{
SusceptibleRatioVar = new ReactiveProperty <double>(AppModel.InitialSettings.PopulationRatio.Value.SusceptibleRatio);
InfectiousRatioVar = new ReactiveProperty <double>(AppModel.InitialSettings.PopulationRatio.Value.InfectiousRatio);
SusceptibleRatioVar.Subscribe(s =>
{
var p0 = AppModel.InitialSettings.PopulationRatio.Value;
var p = new PopulationRatio
{
SusceptibleRatio = s,
InfectiousRatio = 1 - s - p0.RecoveredRatio,
RecoveredRatio = p0.RecoveredRatio,
};
AppModel.InitialSettings.PopulationRatio.Value = p;
InfectiousRatioVar.Value = p.InfectiousRatio;
});
InfectiousRatioVar.Subscribe(i =>
{
var p0 = AppModel.InitialSettings.PopulationRatio.Value;
var p = new PopulationRatio
{
SusceptibleRatio = p0.SusceptibleRatio,
InfectiousRatio = i,
RecoveredRatio = 1 - p0.SusceptibleRatio - i,
};
AppModel.InitialSettings.PopulationRatio.Value = p;
});
SusceptibleRatioMaxValue = AppModel.InitialSettings.PopulationRatio
.Select(p => 0.99 - p.RecoveredRatio)
.ToReadOnlyReactiveProperty();
InfectiousRatioMaxValue = AppModel.InitialSettings.PopulationRatio
.Select(p => 1 - p.SusceptibleRatio)
.ToReadOnlyReactiveProperty();
PopulationImage = AppModel.InfectionSnapshot.Select(DataModelHelper.GetBitmapBinary).ToReadOnlyReactiveProperty();
PopulationSummary = AppModel.InfectionSnapshot.Select(DataModelHelper.ToSummary).ToReadOnlyReactiveProperty();
PopulationLayout = PopulationSummary.Select(ToLayout).ToReadOnlyReactiveProperty();
}
public static PopulationSummary ToSummary(InfectionModel model)
{
var width = model.InitialSettings.Size.Width;
var height = model.InitialSettings.Size.Height;
var summary = new PopulationSummary
{
Total = width * height,
};
for (var i = 0; i < width; i++)
{
for (var j = 0; j < height; j++)
{
switch (model.Statuses[i, j])
{
case InfectionStatus.Susceptible:
summary.Susceptible++;
break;
case InfectionStatus.Infectious:
summary.Infectious++;
break;
case InfectionStatus.Recovered:
summary.Recovered++;
break;
default:
throw new InvalidOperationException();
}
}
}
return(summary);
}
