AngleConstraint.java

/*
 * Copyright 2016 Nathan Howard
 * 
 * This file is part of OpenGrave
 * 
 * OpenGrave 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.
 * 
 * OpenGrave 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 OpenGrave. If not, see <http://www.gnu.org/licenses/>.
 */
package com.opengrave.og.engine.gait;

public class AngleConstraint {

	private float min;
	private float max;

	public AngleConstraint(float min, float max) {
		if (min < 0f) {
			min = 360f + min;
		}
		this.min = min;
		this.max = max;
	}

	public boolean isInside(float value) {
		if (min < max) { // Sensible mode
			if (value < min || value > max) {
				return false;
			}
		} else { // It passes 360 degrees into 0.
			if (value > max && value < min) {
				return false;
			}
		}
		return true;
	}

	public float nearest(float value) {
		float minDist = Math.abs(value - min);
		float maxDist = Math.abs(value - max);
		if (minDist < maxDist) {
			return minDist;
		}
		return maxDist;
	}

}