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IterableRandomAccessibleRegion.java
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IterableRandomAccessibleRegion.java
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/*
* #%L
* ImgLib2: a general-purpose, multidimensional image processing library.
* %%
* Copyright (C) 2009 - 2017 Tobias Pietzsch, Stephan Preibisch, Stephan Saalfeld,
* John Bogovic, Albert Cardona, Barry DeZonia, Christian Dietz, Jan Funke,
* Aivar Grislis, Jonathan Hale, Grant Harris, Stefan Helfrich, Mark Hiner,
* Martin Horn, Steffen Jaensch, Lee Kamentsky, Larry Lindsey, Melissa Linkert,
* Mark Longair, Brian Northan, Nick Perry, Curtis Rueden, Johannes Schindelin,
* Jean-Yves Tinevez and Michael Zinsmaier.
* %%
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. 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 HOLDERS 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.
* #L%
*/
package net.imglib2.roi.util;
import java.util.Iterator;
import net.imglib2.AbstractWrappedInterval;
import net.imglib2.Cursor;
import net.imglib2.Interval;
import net.imglib2.IterableInterval;
import net.imglib2.RandomAccess;
import net.imglib2.RandomAccessibleInterval;
import net.imglib2.roi.IterableRegion;
import net.imglib2.roi.Regions;
import net.imglib2.type.BooleanType;
/**
* Make a boolean {@link RandomAccessibleInterval} iterable. The resulting
* {@link IterableInterval} contains all samples of the source interval that
* evaluate to {@code true}.
*
* {@link Cursor Cursors} are realized by wrapping source {@link RandomAccess
* RandomAccesses} (using {@link RandomAccessibleRegionCursor}).
*
* @author Tobias Pietzsch
*/
public class IterableRandomAccessibleRegion< T extends BooleanType< T > >
extends AbstractWrappedInterval< RandomAccessibleInterval< T > > implements IterableRegion< T >
{
final long size;
public static < T extends BooleanType< T > > IterableRandomAccessibleRegion< T > create( final RandomAccessibleInterval< T > interval )
{
return new IterableRandomAccessibleRegion< T >( interval, Regions.countTrue( interval ) );
}
public IterableRandomAccessibleRegion( final RandomAccessibleInterval< T > interval, final long size )
{
super( interval );
this.size = size;
}
@Override
public long size()
{
return size;
}
@Override
public Void firstElement()
{
return cursor().next();
}
@Override
public Object iterationOrder()
{
return this;
}
@Override
public Iterator< Void > iterator()
{
return cursor();
}
@Override
public Cursor< Void > cursor()
{
return new RandomAccessibleRegionCursor< T >( sourceInterval, size );
}
@Override
public Cursor< Void > localizingCursor()
{
return cursor();
}
@Override
public RandomAccess< T > randomAccess()
{
return sourceInterval.randomAccess();
}
@Override
public RandomAccess< T > randomAccess( final Interval interval )
{
return sourceInterval.randomAccess( interval );
}
}