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/*
* SVG Salamander
* Copyright (c) 2004, Mark McKay
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Mark McKay can be contacted at mark@kitfox.com. Salamander and other
* projects can be found at http://www.kitfox.com
*
* Created on April 1, 2004, 3:37 AM
*/
package com.kitfox.svg.pattern;
import java.awt.*;
import java.awt.geom.*;
import java.awt.image.*;
/**
* @author Mark McKay
* @author <a href="mailto:mark@kitfox.com">Mark McKay</a>
*/
public class PatternPaintContext implements PaintContext
{
BufferedImage source; //Image we're rendering from
Rectangle deviceBounds; //int size of rectangle we're rendering to
// AffineTransform userXform; //xform from user space to device space
// AffineTransform distortXform; //distortion applied to this pattern
AffineTransform xform; //distortion applied to this pattern
int sourceWidth;
int sourceHeight;
//Raster we use to build tile
BufferedImage buf;
/** Creates a new instance of PatternPaintContext */
public PatternPaintContext(BufferedImage source, Rectangle deviceBounds, AffineTransform userXform, AffineTransform distortXform)
{
//System.err.println("Bounds " + deviceBounds);
this.source = source;
this.deviceBounds = deviceBounds;
try {
// this.distortXform = distortXform.createInverse();
// this.userXform = userXform.createInverse();
// xform = userXform.createInverse();
// xform.concatenate(distortXform.createInverse());
xform = distortXform.createInverse();
xform.concatenate(userXform.createInverse());
}
catch (Exception e) { e.printStackTrace(); }
sourceWidth = source.getWidth();
sourceHeight = source.getHeight();
}
public void dispose() {
}
public ColorModel getColorModel() {
return source.getColorModel();
}
public Raster getRaster(int x, int y, int w, int h)
{
//System.err.println("" + x + ", " + y + ", " + w + ", " + h);
if (buf == null || buf.getWidth() != w || buf.getHeight() != buf.getHeight())
{
buf = new BufferedImage(w, h, source.getType());
}
// Point2D.Float srcPt = new Point2D.Float(), srcPt2 = new Point2D.Float(), destPt = new Point2D.Float();
Point2D.Float srcPt = new Point2D.Float(), destPt = new Point2D.Float();
for (int j = 0; j < h; j++)
{
for (int i = 0; i < w; i++)
{
destPt.setLocation(i + x, j + y);
xform.transform(destPt, srcPt);
// userXform.transform(destPt, srcPt2);
// distortXform.transform(srcPt2, srcPt);
int ii = ((int)srcPt.x) % sourceWidth;
if (ii < 0) ii += sourceWidth;
int jj = ((int)srcPt.y) % sourceHeight;
if (jj < 0) jj += sourceHeight;
buf.setRGB(i, j, source.getRGB(ii, jj));
}
}
return buf.getData();
}
public static void main(String[] argv)
{
int i = -4;
System.err.println("Hello " + (i % 4));
}
}
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