/**
* Creates a new instance of <code>BandSelectOpImage</code> in the rendered layer.
*
* @param args The source image and the constants.
* @param hints Optionally contains destination image layout.
*/
public RenderedImage create(ParameterBlock args, RenderingHints renderHints) {
// Get ImageLayout from renderHints if any.
ImageLayout layout = RIFUtil.getImageLayoutHint(renderHints);
return new BandSelectOpImage(
args.getRenderedSource(0), renderHints, layout, (int[]) args.getObjectParameter(0));
}
/**
* Creates a new instance of SubsampleAverageOpImage in the rendered layer. This method satisfies
* the implementation of RIF.
*
* @param paramBlock The source image, the X and Y scale factor, and the interpolation method for
* resampling.
*/
public RenderedImage create(ParameterBlock paramBlock, RenderingHints renderHints) {
// Get ImageLayout from renderHints if any.
ImageLayout layout = RIFUtil.getImageLayoutHint(renderHints);
RenderedImage source = paramBlock.getRenderedSource(0);
double scaleX = paramBlock.getDoubleParameter(0);
double scaleY = paramBlock.getDoubleParameter(1);
// Check and see if we are scaling by 1.0 in both x and y and no
// translations. If so return the source directly.
if (scaleX == 1.0 && scaleY == 1.0) {
return source;
}
return new SubsampleAverageOpImage(source, layout, renderHints, scaleX, scaleY);
}
