TacxBooster.java

/* This file is part of Wattzap Community Edition.
 *
 * Wattzap Community Edtion 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.
 *
 * Wattzap Community Edition 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 Wattzap.  If not, see <http://www.gnu.org/licenses/>.
*/
package com.wattzap.model.power;

/*
 * @author David George
 * @date 11 November 2013
 */
@PowerAnnotation
public class TacxBooster extends Power {
	private final double[] slope = {  5.5, 7.034, 8.567, 10.1, 11.667, 13.167, 14.7, 16.234, 17.767, 19.333};
	private final double[] intercept = {-55, -61, -67, -73, -80, -85, -91, -97, -103, -110 };

	public int getPower(double speed, int resistance) {
		int power = (int) ((speed * slope[resistance]) + intercept[resistance]);
		if (power < 0) {
			return 0;
		}
		return power;
	}

	public double getSpeed(int power, int resistance) {
		double speed = (power - intercept[resistance]) / slope[resistance];
		if (speed < 0) {
			return 0;
		}
		return speed;
	}
	
	@Override
	public int getResitanceLevels() {
		return slope.length;
	}

	public String toString() {
		return "Tacx Booster";
	}
}