/*
* $RCSfile: MlibShearRIF.java,v $
*
* Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
*
* Use is subject to license terms.
*
* $Revision: 1.1 $
* $Date: 2005/02/11 04:56:06 $
* $State: Exp $
*/
package com.lightcrafts.media.jai.mlib;
import java.awt.RenderingHints;
import java.awt.geom.AffineTransform;
import java.awt.image.RenderedImage;
import java.awt.image.renderable.ParameterBlock;
import java.awt.image.renderable.RenderedImageFactory;
import com.lightcrafts.mediax.jai.EnumeratedParameter;
import com.lightcrafts.mediax.jai.BorderExtender;
import com.lightcrafts.mediax.jai.ImageLayout;
import com.lightcrafts.mediax.jai.Interpolation;
import com.lightcrafts.mediax.jai.InterpolationBicubic2;
import com.lightcrafts.mediax.jai.InterpolationBicubic;
import com.lightcrafts.mediax.jai.InterpolationBilinear;
import com.lightcrafts.mediax.jai.InterpolationNearest;
import com.lightcrafts.mediax.jai.InterpolationTable;
import com.lightcrafts.mediax.jai.operator.ShearDescriptor;
import com.lightcrafts.media.jai.opimage.RIFUtil;
/**
* A <code>RIF</code> supporting the "Shear" operation in the
* rendered image mode using MediaLib.
*
* @see com.lightcrafts.mediax.jai.operator.ShearDescriptor
* @see MlibAffineOpImage
*/
public class MlibShearRIF implements RenderedImageFactory {
/** Constructor. */
public MlibShearRIF() {}
/**
* Creates a new instance of <code>MlibAffineOpImage</code> in
* the rendered image mode.
*
* @param args The source image, the <code>AffineTransform</code>,
* and the <code>Interpolation</code>.
* @param hints May contain rendering hints and destination image layout.
*/
public RenderedImage create(ParameterBlock args,
RenderingHints hints) {
/* Get ImageLayout and TileCache from RenderingHints. */
ImageLayout layout = RIFUtil.getImageLayoutHint(hints);
Interpolation interp = (Interpolation)args.getObjectParameter(4);
RenderedImage source = args.getRenderedSource(0);
if (!MediaLibAccessor.isMediaLibCompatible(args, layout) ||
!MediaLibAccessor.hasSameNumBands(args, layout) ||
// Medialib cannot deal with source image having tiles with any
// dimension greater than or equal to 32768
source.getTileWidth() >= 32768 ||
source.getTileHeight() >= 32768) {
return null;
}
/* Get BorderExtender from hints if any. */
BorderExtender extender = RIFUtil.getBorderExtenderHint(hints);
float shear_amt = args.getFloatParameter(0);
EnumeratedParameter shear_dir =
(EnumeratedParameter)args.getObjectParameter(1);
float xTrans = args.getFloatParameter(2);
float yTrans = args.getFloatParameter(3);
double[] backgroundValues = (double[])args.getObjectParameter(5);
// Create the affine transform
AffineTransform tr = new AffineTransform();
if (shear_dir.equals(ShearDescriptor.SHEAR_HORIZONTAL)) {
// SHEAR_HORIZONTAL
tr.setTransform(1.0, 0.0, shear_amt, 1.0, xTrans, 0.0);
} else {
// SHEAR_VERTICAL
tr.setTransform(1.0, shear_amt, 0.0, 1.0, 0.0, yTrans);
}
if (interp instanceof InterpolationNearest) {
return new MlibAffineNearestOpImage(source, extender,
hints, layout,
tr,
interp,
backgroundValues);
} else if (interp instanceof InterpolationBilinear) {
return new MlibAffineBilinearOpImage(source,
extender, hints, layout,
tr,
interp,
backgroundValues);
} else if (interp instanceof InterpolationBicubic ||
interp instanceof InterpolationBicubic2) {
return new MlibAffineBicubicOpImage(source,
extender, hints, layout,
tr,
interp,
backgroundValues);
} else if (interp instanceof InterpolationTable) {
return new MlibAffineTableOpImage(source,
extender, hints, layout,
tr,
interp,
backgroundValues);
} else {
return null;
}
}
}