bundles/common/org.eclipse.apogy.common.geometry.data/src-gen-custom/org/eclipse/apogy/common/geometry/data/impl/CoordinatesSetShapesSamplerCustomImpl.java

/*******************************************************************************
 * Copyright (c) 2018 Agence spatiale canadienne / Canadian Space Agency 
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     Pierre Allard, 
 *     Regent L'Archeveque - initial API and implementation
 *     
 * SPDX-License-Identifier: EPL-1.0
 *     
 *******************************************************************************/
package org.eclipse.apogy.common.geometry.data.impl;

import org.eclipse.apogy.common.geometry.data.Coordinates;
import org.eclipse.apogy.common.geometry.data.CoordinatesSamplingShape;
import org.eclipse.apogy.common.geometry.data.CoordinatesSet;
import org.eclipse.apogy.common.geometry.data.ShapeSamplingMode;

public class CoordinatesSetShapesSamplerCustomImpl<T extends Coordinates> extends CoordinatesSetShapesSamplerImpl<T> {
	@Override
	public CoordinatesSet<T> process(CoordinatesSet<T> input) throws Exception {
		// Updates the processor input.
		setInput(input);

		// Creates the coordinate set that will contain the result.
		CoordinatesSet<T> sampled = createCoordinatesSet(input);

		if (getProgressMonitor() != null)
			getProgressMonitor().beginTask(
					"Sampling using " + getCoordinatesSamplingShapes().size() + " sampling shapes. ",
					input.getPoints().size());

		// Goes through the list of point and checks each of them.
		for (int i = 0; i < input.getPoints().size(); i++) {
			T point = input.getPoints().get(i);

			// If point is inside, add it to the CoordinatesSet
			if (isPointInside(point)) {
				sampled.getPoints().add(copyCoordinates(point));
				if (getProgressMonitor() != null)
					getProgressMonitor().worked(1);
			}
		}

		if (getProgressMonitor() != null)
			getProgressMonitor().done();

		// Updates the processor output.
		setOutput(sampled);

		return sampled;
	}

	/**
	 * Must be overwritten by sub-classes to create the right kind of coordinates
	 * set produced by the process method.
	 * 
	 * @return
	 */
	protected CoordinatesSet<T> createCoordinatesSet(CoordinatesSet<T> input) {
		return null;
	}

	/**
	 * Must be overwritten by sub-classes to create the right kind of coordinates
	 * that is inside the coordinates set produced by the process method.
	 * 
	 * @param point
	 * @return
	 */
	protected T copyCoordinates(T point) {
		throw new UnsupportedOperationException();
	}

	/**
	 * Return whether or not a point is inside at least one sampling shape
	 * 
	 * @param point The point.
	 * @return True if the point is inside, false otherwise.
	 */
	private boolean isPointInside(T point) {
		boolean inside = false;
		if (getShapeSamplingMode() == ShapeSamplingMode.UNION) {
			inside = false;
			int j = 0;

			while (j < getCoordinatesSamplingShapes().size() && !inside) {
				CoordinatesSamplingShape<T> samplingShape = getCoordinatesSamplingShapes().get(j);
				inside |= samplingShape.isInside(point);
				j++;
			}
		} else if (getShapeSamplingMode() == ShapeSamplingMode.INTERSECTION) {
			inside = true;
			int j = 0;

			while (j < getCoordinatesSamplingShapes().size() && inside) {
				CoordinatesSamplingShape<T> samplingShape = getCoordinatesSamplingShapes().get(j);
				inside &= samplingShape.isInside(point);
				j++;
			}
		}

		return inside;
	}
} // CoordinatesSetShapesSamplerImpl