Hi
When i create an ImagePyramidReader or am ImageMosaicReader with parameters
sourceURL and Hints, how to i set/change the transparent input color
programatically? Before or after the constuction.. i just can't find a way.
> Hints hints = new Hints();
> reader = new ImagePyramidReader(theURL, hints);
I have tried to follow the hints through the process, but i don't get it how a
Hint given to the ImagePyramidReader can end up as a GeneralParameterValue in
calls to
> public GridCoverage read(GeneralParameterValue[] params) throws IOException
>{
because it looks like the readParams are just set once in the setInfo() method
of the *Format:
> // reading parameters
> readParameters = new ParameterGroup(new
> DefaultParameterDescriptorGroup(mInfo, new GeneralParameterDescriptor[]{
> READ_GRIDGEOMETRY2D,
> INPUT_TRANSPARENT_COLOR,
> INPUT_IMAGE_THRESHOLD_VALUE,
> OUTPUT_TRANSPARENT_COLOR,
> USE_JAI_IMAGEREAD,
> BACKGROUND_VALUES,
> SUGGESTED_TILE_SIZE,
> ALLOW_MULTITHREADING,
> MAX_ALLOWED_TILES}));
I thought about overwriting the setInfo() method in ImageMosaicFormat, but it
is a final class.
Personally i have just added a setInputTransparentColor(Color c) method to the
ImageMosaicReader and ImagePyramidReader classes, but as i am preparing a
patch for better URL handling
( http://jira.codehaus.org/browse/GEOT-2695 ) i want to do it the GT way as
much as possible.
Greetings,
Steve
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