eu.tomylobo.routes.infrastructure.Node.java Source code

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Here is the source code for eu.tomylobo.routes.infrastructure.Node.java

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/*
 * Copyright (C) 2012 TomyLobo
 *
 * This file is part of Routes.
 *
 * Routes is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

package eu.tomylobo.routes.infrastructure;

import com.google.common.collect.LinkedListMultimap;
import com.google.common.collect.Multimap;

import eu.tomylobo.math.Vector;
import eu.tomylobo.routes.util.Ini;

/**
 * Represents a node on a route.<br />
 * The {@link #tension}, {@link #bias} and {@link #continuity} fields
 * are parameters for the Kochanek-Bartels interpolation algorithm.
 *
 * @author TomyLobo
 *
 */
public class Node extends AbstractDirtyable {
    private Vector position;

    private double tension;
    private double bias;
    private double continuity;

    public Node() {
        this(new Vector(0, 0, 0));
    }

    public Node(Node other) {
        this.position = other.position;

        this.tension = other.tension;
        this.bias = other.bias;
        this.continuity = other.continuity;
    }

    public Node(Vector position) {
        this.position = position;
    }

    public Node(Multimap<String, Multimap<String, String>> sections, String nodeName) {
        load(sections, nodeName);
    }

    public Vector getPosition() {
        return position;
    }

    public void setPosition(Vector position) {
        this.position = position;
        setDirty();
    }

    public double getTension() {
        return tension;
    }

    public void setTension(double tension) {
        this.tension = tension;
        setDirty();
    }

    public double getBias() {
        return bias;
    }

    public void setBias(double bias) {
        this.bias = bias;
        setDirty();
    }

    public double getContinuity() {
        return continuity;
    }

    public void setContinuity(double continuity) {
        this.continuity = continuity;
        setDirty();
    }

    public void save(Multimap<String, Multimap<String, String>> sections, String nodeName) {
        final String nodeSectionName = "node " + nodeName;
        final Multimap<String, String> nodeSection = LinkedListMultimap.create();

        Ini.saveVector(nodeSection, "position.%s", position);
        nodeSection.put("tension", String.valueOf(tension));
        nodeSection.put("bias", String.valueOf(bias));
        nodeSection.put("continuity", String.valueOf(continuity));

        sections.put(nodeSectionName, nodeSection);
    }

    public void load(Multimap<String, Multimap<String, String>> sections, String nodeName) {
        final String nodeSectionName = "node " + nodeName;
        final Multimap<String, String> nodeSection = Ini.getOnlyValue(sections.get(nodeSectionName));

        position = Ini.loadVector(nodeSection, "position.%s");
        tension = Ini.getOnlyDouble(nodeSection.get("tension"));
        bias = Ini.getOnlyDouble(nodeSection.get("bias"));
        continuity = Ini.getOnlyDouble(nodeSection.get("continuity"));
    }
}