public void ReadTooManyPixels()
{
ReadableImage image = null;
try {
image = new ReadableImage(inputLanImagePath);
FredLanPixel pixel = new FredLanPixel();
int pixCount = image.Dimensions.Rows * image.Dimensions.Columns;
for (int i = 0; i < pixCount; i++)
{
image.ReadPixel(pixel);
}
// one too many
image.ReadPixel(pixel);
}
catch (System.Exception exc) {
Data.Output.WriteLine(exc.Message);
throw;
}
finally {
if (image != null)
image.Close();
}
}
/// <summary>
///
/// </summary>
public IInputRaster <T> Open <T>(string path)
where T : IPixel, new()
{
// open image file for reading
ReadableImage image = new ReadableImage(path);
// construct an InputRaster using that
return(new InputRaster <T>(image));
}
public void ReadPixels()
{
ReadableImage image = new ReadableImage(inputLanImagePath);
FredLanPixel pixel = new FredLanPixel();
int pixCount = image.Dimensions.Rows * image.Dimensions.Columns;
for (int i = 0; i < pixCount; i++)
{
image.ReadPixel(pixel);
}
image.Close();
}
private T pixel; // a pixel: used for xfering data
/// <summary>
/// Constructor - takes an already constructed ERDAS image file
/// </summary>
public InputRaster(ReadableImage image)
{
this.disposed = false;
this.image = image;
this.pixel = new T();
// make sure we've got valid input
if (this.image == null)
{
throw new System.ApplicationException("InputRaster constructor passed null image");
}
// pixel vs. image bandcount mismatch?
int pixelBandCount = this.pixel.BandCount;
if (pixelBandCount != image.BandCount)
{
throw new System.ApplicationException("InputRaster band count mismatch");
}
// check bandtype compatibilities
for (int i = 0; i < pixelBandCount; i++)
{
IPixelBand band = this.pixel[i];
if (image.BandType == System.TypeCode.Byte)
{
if (band.TypeCode != System.TypeCode.Byte)
{
throw new System.ApplicationException("InputRaster band type mismatch");
}
}
else if (image.BandType == System.TypeCode.UInt16)
{
if (band.TypeCode != System.TypeCode.UInt16)
{
throw new System.ApplicationException("InputRaster band type mismatch");
}
}
else
{
throw new System.ApplicationException("InputRaster - Unsupported band type");
}
// shouldn't really ever get to this exception
// ErdasImageFile construction code should have
// thrown an exception earlier
}
}
