RoadMappingSpiral.java

/*
 * Copyright (C) 2010, 2011, 2012 by Arne Kesting, Martin Treiber, Ralph Germ, Martin Budden
 *                                   <movsim.org@gmail.com>
 * -----------------------------------------------------------------------------------------
 * 
 * This file is part of
 * 
 * MovSim - the multi-model open-source vehicular-traffic simulator.
 * 
 * MovSim is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * MovSim 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 General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with MovSim. If not, see <http://www.gnu.org/licenses/>
 * or <http://www.movsim.org>.
 * 
 * -----------------------------------------------------------------------------------------
 */

package org.movsim.roadmappings;

/**
 * Maps a road segment onto a spiral.
 */
public class RoadMappingSpiral extends RoadMappingArc {
    double startCurvature;
    double endCurvature;

    RoadMappingSpiral(int laneCount, double s, double x0, double y0, double theta, double length,
            double startCurvature, double endCurvature) {
        // TODO - spiral is approximated by an arc - fix to use proper spiral
        super(laneCount, s, x0, y0, theta, length, (startCurvature + endCurvature) / 2.0);
        this.startCurvature = startCurvature;
        this.endCurvature = endCurvature;
        roadLength = length;
    }

    public double startCurvature() {
        return startCurvature;
    }

    public double endCurvature() {
        return endCurvature;
    }
}