/*
* $RCSfile: WarpRIF.java,v $
*
* Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
*
* Use is subject to license terms.
*
* $Revision: 1.1 $
* $Date: 2005/02/11 04:56:47 $
* $State: Exp $
*/
package com.lightcrafts.media.jai.opimage;
import java.awt.RenderingHints;
import java.awt.image.RenderedImage;
import java.awt.image.renderable.ParameterBlock;
import java.awt.image.renderable.RenderedImageFactory;
import com.lightcrafts.mediax.jai.BorderExtender;
import com.lightcrafts.mediax.jai.ImageLayout;
import com.lightcrafts.mediax.jai.Interpolation;
import com.lightcrafts.mediax.jai.InterpolationNearest;
import com.lightcrafts.mediax.jai.InterpolationBilinear;
import com.lightcrafts.mediax.jai.Warp;
/**
* A <code>RIF</code> supporting the "Warp" operation in the rendered
* image layer.
*
* @since EA2
* @see com.lightcrafts.mediax.jai.operator.WarpDescriptor
* @see GeneralWarpOpImage
*
*/
public class WarpRIF implements RenderedImageFactory {
/** Constructor. */
public WarpRIF() {}
/**
* Creates a new instance of warp operator according to the warp object
* and interpolation method.
*
* @param paramBlock The warp and interpolation objects.
*/
public RenderedImage create(ParameterBlock paramBlock,
RenderingHints renderHints) {
// Get ImageLayout from renderHints if any.
ImageLayout layout = RIFUtil.getImageLayoutHint(renderHints);
// Get BorderExtender from renderHints if any.
BorderExtender extender = RIFUtil.getBorderExtenderHint(renderHints);
RenderedImage source = paramBlock.getRenderedSource(0);
Warp warp = (Warp)paramBlock.getObjectParameter(0);
Interpolation interp = (Interpolation)paramBlock.getObjectParameter(1);
double[] backgroundValues = (double[])paramBlock.getObjectParameter(2);
if (interp instanceof InterpolationNearest) {
return new WarpNearestOpImage(source,
renderHints,
layout,
warp,
interp,
backgroundValues);
} else if (interp instanceof InterpolationBilinear) {
return new WarpBilinearOpImage(source, extender, renderHints,
layout, warp, interp,
backgroundValues);
} else {
return new WarpGeneralOpImage(source, extender, renderHints,
layout, warp, interp,
backgroundValues);
}
}
}