/*
 * #%L
 * ImageJ software for multidimensional image processing and analysis.
 * %%
 * Copyright (C) 2014 - 2016 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.geom.geom2d;

import net.imagej.ops.Ops;
import net.imagej.ops.special.chain.RTs;
import net.imagej.ops.special.function.UnaryFunctionOp;
import net.imagej.ops.special.hybrid.AbstractUnaryHybridCF;
import net.imglib2.roi.geometric.Polygon;
import net.imglib2.type.numeric.real.DoubleType;

import org.scijava.plugin.Plugin;

/**
 * Generic implementation of {@code geom.mainElongation}.
 * 
 * @author Daniel Seebacher (University of Konstanz)
 */
@Plugin(type = Ops.Geometric.MainElongation.class, label = "Geometric (2D): Elongation")
public class DefaultElongation extends AbstractUnaryHybridCF<Polygon, DoubleType>
		implements Ops.Geometric.MainElongation {

	private UnaryFunctionOp<Polygon, DoubleType> minorAxisFunc;
	private UnaryFunctionOp<Polygon, DoubleType> majorAxisFunc;

	@Override
	public void initialize() {
		minorAxisFunc = RTs.function(ops(), Ops.Geometric.MinorAxis.class, in());
		majorAxisFunc = RTs.function(ops(), Ops.Geometric.MajorAxis.class, in());
	}

	@Override
	public void compute1(final Polygon input, final DoubleType output) {
		output.set(1d - minorAxisFunc.compute1(input).getRealDouble() / majorAxisFunc.compute1(input).getRealDouble());
	}

	@Override
	public DoubleType createOutput(Polygon input) {
		return new DoubleType();
	}

}

@@ -1571,16 +1571,40 @@
 eom2d;%0A%0A
+import java.util.List;%0A%0A
 import n
@@ -1656,16 +1656,25 @@
 ial.
-chain.RT
+function.Function
 s;%0Ai
@@ -1788,16 +1788,52 @@
 bridCF;%0A
+import net.imglib2.RealLocalizable;%0A
 import n
@@ -2015,43 +2015,145 @@
 ion%7D
-.%0A * %0A * @author Daniel Seebacher (
+ based on%0A * http://www.math.uci.edu/icamp/summer/research_11/park/%0A * shape_descriptors_survey.pdf.%0A * %0A * @author Tim-Oliver Buchholz, 
 Univ
@@ -2170,17 +2170,16 @@
 Konstanz
-)
 %0A */%0A@Pl
@@ -2429,90 +2429,35 @@
 on, 
-DoubleType%3E minorAxisFunc;%0A%09private UnaryFunctionOp%3CPolygon, DoubleType%3E majorAxis
+Polygon%3E minimumBoundingBox
 Func
@@ -2507,33 +2507,45 @@
 %09min
-orAxis
+imumBoundingBox
 Func = 
-RTs.f
+F
 unction
+s.unary
 (ops
@@ -2566,101 +2566,63 @@
 ric.
-MinorAxis.class, in());%0A%09%09majorAxisFunc = RTs.function(ops(), Ops.Geometric.MajorAxis
+SmallestEnclosingBoundingBox.class, Polygon
 .class,
- 
+%0A%09%09%09%09
 in()
@@ -2715,116 +2715,683 @@
 %7B%0A%09%09
-output.set(1d - minorAxisFunc.compute1(input).getRealDouble() / majorAxisFunc.compute1(input).getRealDouble(
+final List%3C? extends RealLocalizable%3E minBB = minimumBoundingBoxFunc.compute1(input).getVertices();%0A%0A%09%09final RealLocalizable p1 = minBB.get(0);%0A%09%09final RealLocalizable p2 = minBB.get(1);%0A%09%09final RealLocalizable p3 = minBB.get(2);%0A%0A%09%09double width = Math.sqrt(Math.pow(p1.getDoublePosition(0) - p2.getDoublePosition(0), 2)%0A%09%09%09%09+ Math.pow(p1.getDoublePosition(1) - p2.getDoublePosition(1), 2));%0A%09%09double length = Math.sqrt(Math.pow(p2.getDoublePosition(0) - p3.getDoublePosition(0), 2)%0A%09%09%09%09+ Math.pow(p2.getDoublePosition(1) - p3.getDoublePosition(1), 2));%0A%0A%09%09if (width %3E length) %7B%0A%09%09%09double tmp = width;%0A%09%09%09width = length;%0A%09%09%09length = tmp;%0A%09%09%7D%0A%09%09output.set(1d - (width / length
 ));%0A

Fix elongation implementation.