//---------------------------------------------------------------------
public static int GenerateWindDirection(IWindDirectionParameters windDir)
{
double randNum = Util.Random.GenerateUniform();
int primeWindDirection = 0;
double bottom = 0.0;
double top = 0.0;
for (int i = 0; i <= 7; i++)
{
top += windDir.WindDirections[i];
if(randNum >= bottom && randNum <= top)
{
primeWindDirection = i * 45; //45 degrees per slice
break;
}
bottom += windDir.WindDirections[i];
}
//Next, randomize around cardinal direction:
int wiggle = (int) ((Util.Random.GenerateUniform() * 45.0) - 22.5);
//return primeWindDirection + wiggle;
return primeWindDirection;
}
//---------------------------------------------------------------------
public static Event Initiate(ActiveSite site,
int timestep,
SizeType fireSizeType,
bool bui,
ISeasonParameters[] seasons,
IWindDirectionParameters[] windDirs)
{
//Adjust ignition probability (measured on an annual basis) for the
//user determined fire time step.
int fuelIndex = SiteVars.CFSFuelType[site];
//-----Edited by BRM-----
//double initProb = fuelTypeParms[fuelIndex].InitiationProbability * timestep;
double initProb = fuelTypeParms[fuelIndex].InitiationProbability;
//---------
//The initial site must exceed the probability of initiation and
//have a severity > 0 and exceed the ignition threshold:
if (Util.Random.GenerateUniform() <= initProb)
{
Event FireEvent = new Event(site, seasons, windDirs);
if(!FireEvent.Spread(site, fireSizeType, bui))
return null;
else
return FireEvent;
}
return null;
}
//---------------------------------------------------------------------
public Parameters(int timestep,
SizeType fireSizeType,
bool buildUpIndex,
ISeasonParameters[] seasonParameters,
IWindDirectionParameters[] windDirectionParameters,
IFuelTypeParameters[] fuelTypeParameters,
IDamageTable[] damages,
string mapNameTemplate,
string logFileName,
string summaryLogFileName)
{
this.timestep = timestep;
this.fireSizeType = fireSizeType;
this.buildUpIndex = buildUpIndex;
this.seasonParameters = seasonParameters;
this.windDirectionParameters = windDirectionParameters;
this.fuelTypeParameters = fuelTypeParameters;
this.damages = damages;
this.mapNamesTemplate = mapNameTemplate;
this.logFileName = logFileName;
this.summaryLogFileName = summaryLogFileName;
}
//---------------------------------------------------------------------
private Event(ActiveSite initiationSite, ISeasonParameters[] seasons, IWindDirectionParameters[] windDirs)
{
this.initiationSite = initiationSite;
this.sitesInEvent = new int[Ecoregions.Dataset.Count];
foreach(IEcoregion ecoregion in Ecoregions.Dataset)
this.sitesInEvent[ecoregion.Index] = 0;
this.cohortsKilled = 0;
this.eventSeverity = 0;
this.totalSitesDamaged = 0;
this.lengthB = 0.0;
this.lengthA = 0.0;
this.lengthD = 0.0;
this.fireSeason = Weather.GenerateSeason(seasons);
this.windSpeed = Weather.GenerateWindSpeed(this.fireSeason);
this.fineFuelMoistureCode = Weather.GenerateFineFuelMoistureCode(this.fireSeason);
this.buildUpIndex = Weather.GenerateBuildUpIndex(this.fireSeason);
IWindDirectionParameters windDir = windDirs[(int) this.fireSeason.NameOfSeason];
this.windDirection = Weather.GenerateWindDirection(windDir);
}
