//---------------------------------------------------------------------
/// <summary>
/// Initializes a new instance using an input raster with ecoregion
/// pixels.
/// </summary>
public InputGrid(IInputRaster <Pixel> raster,
IDataset ecoregions)
: base(raster.Dimensions)
{
this.raster = raster;
this.ecoregions = ecoregions;
// Initialize pixel location so the next call to RowMajor.Next
// will return upper-left location (1,1)
this.pixelLocation = new Location(1, 0);
}
//---------------------------------------------------------------------
public EcoregionCode ReadValue()
{
if (disposed)
{
throw new System.InvalidOperationException("Object has been disposed.");
}
Pixel pixel = raster.ReadPixel();
pixelLocation = RowMajor.Next(pixelLocation, raster.Dimensions.Columns);
ushort mapCode = pixel.Band0;
IEcoregion ecoregion = ecoregions.Find(mapCode);
if (ecoregion != null)
{
return(new EcoregionCode(mapCode, ecoregion.Active));
}
string mesg = string.Format("Error at map site {0}", pixelLocation);
string innerMesg = string.Format("Unknown map code for ecoregion: {0}", mapCode);
throw new MultiLineException(mesg, innerMesg);
}
//---------------------------------------------------------------------
/// <summary>
/// Gets a site on the landscape.
/// </summary>
/// <param name="location">
/// the site's location
/// </param>
/// <returns>
/// a false site if the location is not on the landscape.
/// </returns>
public virtual Site GetSite(Location location)
{
return(new Site());
}
//---------------------------------------------------------------------
/// <summary>
/// Is a location valid for a landscape?
/// </summary>
public virtual bool IsValid(Location location)
{
return(false);
}
//---------------------------------------------------------------------
/// <summary>
/// Gets an active site on the landscape.
/// </summary>
/// <param name="location">
/// the site's location
/// </param>
/// <returns>
/// a false site if the location is not on the landscape.
/// </returns>
public virtual ActiveSite this[Location location]
{
get {
return(new ActiveSite());
}
}
