/// <summary>Fill header with keywords that describe image data.</summary>
/// <param name="head">The FITS header</param>
/// <exception cref="FitsException"> FitsException if the object does not contain valid image data.</exception>
internal override void FillHeader(Header head)
{
if (dataArray == null)
{
head.NullImage();
return ;
}
Type classname = ArrayFuncs.GetBaseClass(dataArray);
int[] dimens = ArrayFuncs.GetDimensions(dataArray);
if (dimens == null || dimens.Length == 0)
{
throw new FitsException("Image data object not array. ");
}
int bitpix;
// Changed from classname[dimens.Length] to classname[classname.IndexOf(".") + 1]
switch (classname.ToString())
{
case "System.Byte":
bitpix = 8;
break;
case "System.Int16":
bitpix = 16;
break;
case "System.Int32":
bitpix = 32;
break;
case "System.Int64":
bitpix = 64;
break;
case "System.Single":
bitpix = - 32;
break;
case "System.Double":
bitpix = - 64;
break;
default:
throw new FitsException("Invalid Object Type for FITS data:" +
classname.ToString());
}
// if this is neither a primary header nor an image extension,
// make it a primary header
head.Simple = true;
head.Bitpix = bitpix;
head.Naxes = dimens.Length;
for (int i = 1; i <= dimens.Length; i += 1)
{
if (dimens[i - 1] == - 1)
{
throw new FitsException("Unfilled array for dimension: " + i);
}
head.SetNaxis(i, dimens[dimens.Length - i]);
}
// suggested in .97 version: EXTEND keyword added before PCOUNT and GCOUNT.
head.AddValue("EXTEND", true, "Extension permitted"); // Just in case!
head.AddValue("PCOUNT", 0, "No extra parameters");
head.AddValue("GCOUNT", 1, "One group");
}