SimpleExample.java

/* 
 * Copyright (c) 2005–2012 Goethe Center for Scientific Computing - Simulation and Modelling (G-CSC Frankfurt)
 * Copyright (c) 2012-2015 Goethe Center for Scientific Computing - Computational Neuroscience (G-CSC Frankfurt)
 * 
 * This file is part of NeuGen.
 *
 * NeuGen is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License version 3
 * as published by the Free Software Foundation.
 * 
 * see: http://opensource.org/licenses/LGPL-3.0
 *      file://path/to/NeuGen/LICENSE
 *
 * NeuGen is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * This version of NeuGen includes copyright notice and attribution requirements.
 * According to the LGPL this information must be displayed even if you modify
 * the source code of NeuGen. The copyright statement/attribution may not be removed.
 *
 * Attribution Requirements:
 *
 * If you create derived work you must do the following regarding copyright
 * notice and author attribution.
 *
 * Add an additional notice, stating that you modified NeuGen. In addition
 * you must cite the publications listed below. A suitable notice might read
 * "NeuGen source code modified by YourName 2012".
 * 
 * Note, that these requirements are in full accordance with the LGPL v3
 * (see 7. Additional Terms, b).
 *
 * Publications:
 *
 * S. Wolf, S. Grein, G. Queisser. NeuGen 2.0 -
 * Employing NeuGen 2.0 to automatically generate realistic
 * morphologies of hippocapal neurons and neural networks in 3D.
 * Neuroinformatics, 2013, 11(2), pp. 137-148, doi: 10.1007/s12021-012-9170-1
 *
 *
 * J. P. Eberhard, A. Wanner, G. Wittum. NeuGen -
 * A tool for the generation of realistic morphology 
 * of cortical neurons and neural networks in 3D.
 * Neurocomputing, 70(1-3), pp. 327-343, doi: 10.1016/j.neucom.2006.01.028
 *
 */
package org.neugen.quickhull3d;

/**
 * Simple example usage of QuickHull3D. Run as the command
 * 
 * <pre>
 *      java quickhull3d.SimpleExample
 * </pre>
 */
public class SimpleExample {

    /**
     * Run for a simple demonstration of QuickHull3D.
     */
    public static void main(String[] args) {
        // x y z coordinates of 6 points
        Point3dQH[] points = new Point3dQH[]{new Point3dQH(0.0, 0.0, 0.0), new Point3dQH(1.0, 0.5, 0.0), new Point3dQH(2.0, 0.0, 0.0),
            new Point3dQH(0.5, 0.5, 0.5), new Point3dQH(0.0, 0.0, 2.0), new Point3dQH(0.1, 0.2, 0.3),
            new Point3dQH(0.0, 2.0, 0.0),};

        QuickHull3D hull = new QuickHull3D();
        hull.build(points);

        System.out.println("Vertices:");
        Point3dQH[] vertices = hull.getVertices();
        for (int i = 0; i < vertices.length; i++) {
            Point3dQH pnt = vertices[i];
            System.out.println(pnt.x + " " + pnt.y + " " + pnt.z);
        }

        // WRONG: for (int i = 0; i < vertices.length; i++) !!!
        // RIGHT: for (int i = 0; i < faceIndices.length; i++) !!!
        System.out.println("Faces:");
        int[][] faceIndices = hull.getFaces();
        for (int i = 0; i < faceIndices.length; i++) {
            for (int k = 0; k < faceIndices[i].length; k++) {
                System.out.print(faceIndices[i][k] + " ");
            }
            System.out.println("");
        }
    }
}