/*
 * #%L
 * ImageJ software for multidimensional image processing and analysis.
 * %%
 * Copyright (C) 2014 - 2015 Board of Regents of the University of
 * Wisconsin-Madison, University of Konstanz and Brian Northan.
 * %%
 * 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.imagej.ops.convert.scale;

import net.imagej.ops.Ops;
import net.imagej.ops.convert.RealTypeConverter;
import net.imglib2.IterableInterval;
import net.imglib2.type.numeric.RealType;

import org.scijava.plugin.Plugin;

/**
 * @author Martin Horn (University of Konstanz)
 */
@Plugin(type = Ops.Convert.class, name = Ops.Convert.NAME)
public class ScaleRealTypes<I extends RealType<I>, O extends RealType<O>>
	extends RealTypeConverter<I, O>
{

	protected double inMin;

	protected double outMin;

	protected double factor = 0;

	@Override
	public void compute(final I input, final O output) {
		output.setReal((input.getRealDouble() - inMin) / factor + outMin);
	}

	@Override
	public void checkInput(final I inType, final O outType) {
		inMin = inType.getMinValue();
		outMin = outType.getMinValue();
		factor = (inType.getMaxValue() - inMin) / (outType.getMaxValue() - outMin);
	}

	@Override
	public void checkInput(final IterableInterval<I> in) {
		// nothing to do here
	}

	@Override
	public boolean conforms() {
		return true;
	}
}

/*
 * #%L
 * ImageJ software for multidimensional image processing and analysis.
 * %%
 * Copyright (C) 2014 - 2015 Board of Regents of the University of
 * Wisconsin-Madison, University of Konstanz and Brian Northan.
 * %%
 * 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.imagej.ops.convert.scale;

import net.imagej.ops.Ops;
import net.imagej.ops.convert.RealTypeConverter;
import net.imglib2.IterableInterval;
import net.imglib2.type.numeric.RealType;

import org.scijava.plugin.Plugin;

/**
 * @author Martin Horn (University of Konstanz)
 */
@Plugin(type = Ops.Convert.class, name = Ops.Convert.NAME)
public class ScaleRealTypes<I extends RealType<I>, O extends RealType<O>>
	extends RealTypeConverter<I, O>
{

	protected double inMin;

	protected double outMin;

	protected double factor;

	@Override
	public void compute(final I input, final O output) {
		output.setReal((input.getRealDouble() - inMin) / factor + outMin);
	}

	@Override
	public void checkInput(final I inType, final O outType) {
		inMin = inType.getMinValue();
		outMin = outType.getMinValue();
		factor = (inType.getMaxValue() - inMin) / (outType.getMaxValue() - outMin);
	}

	@Override
	public void checkInput(final IterableInterval<I> in) {
		// nothing to do here
	}

	@Override
	public boolean conforms() {
		return true;
	}
}

remove unnecessary assignment