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<div class="subTitle">com.jhlabs.image</div>
<h2 title="Class TransformFilter" class="title">Class TransformFilter</h2>
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<ul class="inheritance">
<li>java.lang.Object</li>
<li>
<ul class="inheritance">
<li><a href="../../../com/jhlabs/image/AbstractBufferedImageOp.html" title="class in com.jhlabs.image">com.jhlabs.image.AbstractBufferedImageOp</a></li>
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<ul class="inheritance">
<li>com.jhlabs.image.TransformFilter</li>
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<dt>All Implemented Interfaces:</dt>
<dd>java.awt.image.BufferedImageOp, java.lang.Cloneable</dd>
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<dl>
<dt>Direct Known Subclasses:</dt>
<dd><a href="../../../com/jhlabs/image/CircleFilter.html" title="class in com.jhlabs.image">CircleFilter</a>, <a href="../../../com/jhlabs/image/DiffuseFilter.html" title="class in com.jhlabs.image">DiffuseFilter</a>, <a href="../../../com/jhlabs/image/DisplaceFilter.html" title="class in com.jhlabs.image">DisplaceFilter</a>, <a href="../../../com/jhlabs/image/FieldWarpFilter.html" title="class in com.jhlabs.image">FieldWarpFilter</a>, <a href="../../../com/jhlabs/image/KaleidoscopeFilter.html" title="class in com.jhlabs.image">KaleidoscopeFilter</a>, <a href="../../../com/jhlabs/image/MapFilter.html" title="class in com.jhlabs.image">MapFilter</a>, <a href="../../../com/jhlabs/image/MarbleFilter.html" title="class in com.jhlabs.image">MarbleFilter</a>, <a href="../../../com/jhlabs/image/OffsetFilter.html" title="class in com.jhlabs.image">OffsetFilter</a>, <a href="../../../com/jhlabs/image/PerspectiveFilter.html" title="class in com.jhlabs.image">PerspectiveFilter</a>, <a href="../../../com/jhlabs/image/PinchFilter.html" title="class in com.jhlabs.image">PinchFilter</a>, <a href="../../../com/jhlabs/image/PolarFilter.html" title="class in com.jhlabs.image">PolarFilter</a>, <a href="../../../com/jhlabs/image/RippleFilter.html" title="class in com.jhlabs.image">RippleFilter</a>, <a href="../../../com/jhlabs/image/RotateFilter.html" title="class in com.jhlabs.image">RotateFilter</a>, <a href="../../../com/jhlabs/image/ShearFilter.html" title="class in com.jhlabs.image">ShearFilter</a>, <a href="../../../com/jhlabs/image/SphereFilter.html" title="class in com.jhlabs.image">SphereFilter</a>, <a href="../../../com/jhlabs/image/SwimFilter.html" title="class in com.jhlabs.image">SwimFilter</a>, <a href="../../../com/jhlabs/image/TwirlFilter.html" title="class in com.jhlabs.image">TwirlFilter</a>, <a href="../../../com/jhlabs/image/WaterFilter.html" title="class in com.jhlabs.image">WaterFilter</a></dd>
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<br>
<pre>public abstract class <span class="strong">TransformFilter</span>
extends <a href="../../../com/jhlabs/image/AbstractBufferedImageOp.html" title="class in com.jhlabs.image">AbstractBufferedImageOp</a></pre>
<div class="block">An abstract superclass for filters which distort images in some way. The subclass only needs to override
two methods to provide the mapping between source and destination pixels.</div>
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<caption><span>Fields</span><span class="tabEnd"> </span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Field and Description</th>
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<tr class="altColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><strong><a href="../../../com/jhlabs/image/TransformFilter.html#BILINEAR">BILINEAR</a></strong></code>
<div class="block">Use bilinear interpolation.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><strong><a href="../../../com/jhlabs/image/TransformFilter.html#CLAMP">CLAMP</a></strong></code>
<div class="block">Clamp pixels to the image edges.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>protected int</code></td>
<td class="colLast"><code><strong><a href="../../../com/jhlabs/image/TransformFilter.html#edgeAction">edgeAction</a></strong></code>
<div class="block">The action to take for pixels off the image edge.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>protected int</code></td>
<td class="colLast"><code><strong><a href="../../../com/jhlabs/image/TransformFilter.html#interpolation">interpolation</a></strong></code>
<div class="block">The type of interpolation to use.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><strong><a href="../../../com/jhlabs/image/TransformFilter.html#NEAREST_NEIGHBOUR">NEAREST_NEIGHBOUR</a></strong></code>
<div class="block">Use nearest-neighbout interpolation.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>protected java.awt.Rectangle</code></td>
<td class="colLast"><code><strong><a href="../../../com/jhlabs/image/TransformFilter.html#originalSpace">originalSpace</a></strong></code>
<div class="block">The input image rectangle.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><strong><a href="../../../com/jhlabs/image/TransformFilter.html#RGB_CLAMP">RGB_CLAMP</a></strong></code>
<div class="block">Clamp pixels RGB to the image edges, but zero the alpha.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>protected java.awt.Rectangle</code></td>
<td class="colLast"><code><strong><a href="../../../com/jhlabs/image/TransformFilter.html#transformedSpace">transformedSpace</a></strong></code>
<div class="block">The output image rectangle.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><strong><a href="../../../com/jhlabs/image/TransformFilter.html#WRAP">WRAP</a></strong></code>
<div class="block">Wrap pixels off the edge onto the oppsoite edge.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><strong><a href="../../../com/jhlabs/image/TransformFilter.html#ZERO">ZERO</a></strong></code>
<div class="block">Treat pixels off the edge as zero.</div>
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<th class="colOne" scope="col">Constructor and Description</th>
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<td class="colOne"><code><strong><a href="../../../com/jhlabs/image/TransformFilter.html#TransformFilter()">TransformFilter</a></strong>()</code> </td>
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<th class="colFirst" scope="col">Modifier and Type</th>
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<td class="colFirst"><code>java.awt.image.BufferedImage</code></td>
<td class="colLast"><code><strong><a href="../../../com/jhlabs/image/TransformFilter.html#filter(java.awt.image.BufferedImage, java.awt.image.BufferedImage)">filter</a></strong>(java.awt.image.BufferedImage src,
java.awt.image.BufferedImage dst)</code> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>protected java.awt.image.BufferedImage</code></td>
<td class="colLast"><code><strong><a href="../../../com/jhlabs/image/TransformFilter.html#filterPixelsNN(java.awt.image.BufferedImage, int, int, int[], java.awt.Rectangle)">filterPixelsNN</a></strong>(java.awt.image.BufferedImage dst,
int width,
int height,
int[] inPixels,
java.awt.Rectangle transformedSpace)</code> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><strong><a href="../../../com/jhlabs/image/TransformFilter.html#getEdgeAction()">getEdgeAction</a></strong>()</code>
<div class="block">Get the action to perform for pixels off the edge of the image.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><strong><a href="../../../com/jhlabs/image/TransformFilter.html#getInterpolation()">getInterpolation</a></strong>()</code>
<div class="block">Get the type of interpolation to perform.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../com/jhlabs/image/TransformFilter.html#setEdgeAction(int)">setEdgeAction</a></strong>(int edgeAction)</code>
<div class="block">Set the action to perform for pixels off the edge of the image.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../com/jhlabs/image/TransformFilter.html#setInterpolation(int)">setInterpolation</a></strong>(int interpolation)</code>
<div class="block">Set the type of interpolation to perform.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>protected abstract void</code></td>
<td class="colLast"><code><strong><a href="../../../com/jhlabs/image/TransformFilter.html#transformInverse(int, int, float[])">transformInverse</a></strong>(int x,
int y,
float[] out)</code>
<div class="block">Inverse transform a point.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>protected void</code></td>
<td class="colLast"><code><strong><a href="../../../com/jhlabs/image/TransformFilter.html#transformSpace(java.awt.Rectangle)">transformSpace</a></strong>(java.awt.Rectangle rect)</code>
<div class="block">Forward transform a rectangle.</div>
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<h3>Methods inherited from class com.jhlabs.image.<a href="../../../com/jhlabs/image/AbstractBufferedImageOp.html" title="class in com.jhlabs.image">AbstractBufferedImageOp</a></h3>
<code><a href="../../../com/jhlabs/image/AbstractBufferedImageOp.html#clone()">clone</a>, <a href="../../../com/jhlabs/image/AbstractBufferedImageOp.html#createCompatibleDestImage(java.awt.image.BufferedImage, java.awt.image.ColorModel)">createCompatibleDestImage</a>, <a href="../../../com/jhlabs/image/AbstractBufferedImageOp.html#getBounds2D(java.awt.image.BufferedImage)">getBounds2D</a>, <a href="../../../com/jhlabs/image/AbstractBufferedImageOp.html#getPoint2D(java.awt.geom.Point2D, java.awt.geom.Point2D)">getPoint2D</a>, <a href="../../../com/jhlabs/image/AbstractBufferedImageOp.html#getRenderingHints()">getRenderingHints</a>, <a href="../../../com/jhlabs/image/AbstractBufferedImageOp.html#getRGB(java.awt.image.BufferedImage, int, int, int, int, int[])">getRGB</a>, <a href="../../../com/jhlabs/image/AbstractBufferedImageOp.html#setRGB(java.awt.image.BufferedImage, int, int, int, int, int[])">setRGB</a></code></li>
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<h3>Methods inherited from class java.lang.Object</h3>
<code>equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</code></li>
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<h3>Field Detail</h3>
<a name="ZERO">
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<h4>ZERO</h4>
<pre>public static final int ZERO</pre>
<div class="block">Treat pixels off the edge as zero.</div>
<dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../constant-values.html#com.jhlabs.image.TransformFilter.ZERO">Constant Field Values</a></dd></dl>
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<a name="CLAMP">
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<h4>CLAMP</h4>
<pre>public static final int CLAMP</pre>
<div class="block">Clamp pixels to the image edges.</div>
<dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../constant-values.html#com.jhlabs.image.TransformFilter.CLAMP">Constant Field Values</a></dd></dl>
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<h4>WRAP</h4>
<pre>public static final int WRAP</pre>
<div class="block">Wrap pixels off the edge onto the oppsoite edge.</div>
<dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../constant-values.html#com.jhlabs.image.TransformFilter.WRAP">Constant Field Values</a></dd></dl>
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<h4>RGB_CLAMP</h4>
<pre>public static final int RGB_CLAMP</pre>
<div class="block">Clamp pixels RGB to the image edges, but zero the alpha. This prevents gray borders on your image.</div>
<dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../constant-values.html#com.jhlabs.image.TransformFilter.RGB_CLAMP">Constant Field Values</a></dd></dl>
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<h4>NEAREST_NEIGHBOUR</h4>
<pre>public static final int NEAREST_NEIGHBOUR</pre>
<div class="block">Use nearest-neighbout interpolation.</div>
<dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../constant-values.html#com.jhlabs.image.TransformFilter.NEAREST_NEIGHBOUR">Constant Field Values</a></dd></dl>
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<h4>BILINEAR</h4>
<pre>public static final int BILINEAR</pre>
<div class="block">Use bilinear interpolation.</div>
<dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../constant-values.html#com.jhlabs.image.TransformFilter.BILINEAR">Constant Field Values</a></dd></dl>
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<h4>edgeAction</h4>
<pre>protected int edgeAction</pre>
<div class="block">The action to take for pixels off the image edge.</div>
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<h4>interpolation</h4>
<pre>protected int interpolation</pre>
<div class="block">The type of interpolation to use.</div>
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<h4>transformedSpace</h4>
<pre>protected java.awt.Rectangle transformedSpace</pre>
<div class="block">The output image rectangle.</div>
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<h4>originalSpace</h4>
<pre>protected java.awt.Rectangle originalSpace</pre>
<div class="block">The input image rectangle.</div>
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<h4>TransformFilter</h4>
<pre>public TransformFilter()</pre>
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<h4>setEdgeAction</h4>
<pre>public void setEdgeAction(int edgeAction)</pre>
<div class="block">Set the action to perform for pixels off the edge of the image.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>edgeAction</code> - one of ZERO, CLAMP or WRAP</dd><dt><span class="strong">See Also:</span></dt><dd><a href="../../../com/jhlabs/image/TransformFilter.html#getEdgeAction()"><code>getEdgeAction()</code></a></dd></dl>
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<h4>getEdgeAction</h4>
<pre>public int getEdgeAction()</pre>
<div class="block">Get the action to perform for pixels off the edge of the image.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>one of ZERO, CLAMP or WRAP</dd><dt><span class="strong">See Also:</span></dt><dd><a href="../../../com/jhlabs/image/TransformFilter.html#setEdgeAction(int)"><code>setEdgeAction(int)</code></a></dd></dl>
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<h4>setInterpolation</h4>
<pre>public void setInterpolation(int interpolation)</pre>
<div class="block">Set the type of interpolation to perform.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>interpolation</code> - one of NEAREST_NEIGHBOUR or BILINEAR</dd><dt><span class="strong">See Also:</span></dt><dd><a href="../../../com/jhlabs/image/TransformFilter.html#getInterpolation()"><code>getInterpolation()</code></a></dd></dl>
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<h4>getInterpolation</h4>
<pre>public int getInterpolation()</pre>
<div class="block">Get the type of interpolation to perform.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>one of NEAREST_NEIGHBOUR or BILINEAR</dd><dt><span class="strong">See Also:</span></dt><dd><a href="../../../com/jhlabs/image/TransformFilter.html#setInterpolation(int)"><code>setInterpolation(int)</code></a></dd></dl>
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<h4>transformInverse</h4>
<pre>protected abstract void transformInverse(int x,
int y,
float[] out)</pre>
<div class="block">Inverse transform a point. This method needs to be overriden by all subclasses.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>x</code> - the X position of the pixel in the output image</dd><dd><code>y</code> - the Y position of the pixel in the output image</dd><dd><code>out</code> - the position of the pixel in the input image</dd></dl>
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<pre>protected void transformSpace(java.awt.Rectangle rect)</pre>
<div class="block">Forward transform a rectangle. Used to determine the size of the output image.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>rect</code> - the rectangle to transform</dd></dl>
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<h4>filter</h4>
<pre>public java.awt.image.BufferedImage filter(java.awt.image.BufferedImage src,
java.awt.image.BufferedImage dst)</pre>
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<pre>protected java.awt.image.BufferedImage filterPixelsNN(java.awt.image.BufferedImage dst,
int width,
int height,
int[] inPixels,
java.awt.Rectangle transformedSpace)</pre>
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