org.locationtech.proj4j.proj.PutninsP5Projection Maven / Gradle / Ivy

/*******************************************************************************
 * Copyright 2006, 2017 Jerry Huxtable, Martin Davis
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/*
 * This file was semi-automatically converted from the public-domain USGS PROJ source.
 */
package org.locationtech.proj4j.proj;

import org.locationtech.proj4j.ProjCoordinate;

public class PutninsP5Projection extends Projection {

	protected double A;
	protected double B;

	private final static double C = 1.01346;
	private final static double D = 1.2158542;

	public PutninsP5Projection() {
		A = 2;
		B = 1;
	}

	public ProjCoordinate project(double lplam, double lpphi, ProjCoordinate xy) {
		xy.x = C * lplam * (A - B * Math.sqrt(1. + D * lpphi * lpphi));
		xy.y = C * lpphi;
		return xy;
	}

	public ProjCoordinate projectInverse(double xyx, double xyy, ProjCoordinate lp) {
		lp.y = xyy / C;
		lp.x = xyx / (C * (A - B * Math.sqrt(1. + D * lp.y * lp.y)));
		return lp;
	}

	public boolean hasInverse() {
		return true;
	}

	public String toString() {
		return "Putnins P5";
	}

}