X-Git-Url: http://wamblee.org/gitweb/?a=blobdiff_plain;f=gps%2Fsrc%2Fmain%2Fjava%2Forg%2Fwamblee%2Fgps%2Fgeometry%2FWgs84CoordinateSystem.java;fp=gps%2Fsrc%2Fmain%2Fjava%2Forg%2Fwamblee%2Fgps%2Fgeometry%2FWgs84CoordinateSystem.java;h=0000000000000000000000000000000000000000;hb=9e3f0e3a7b4a63aaed0c33466c041982dc93b511;hp=d08378da4a2e85500d763e1907ef4537b6d0d3bf;hpb=2207a1e695ce23e79678c232cff2ceb84ebaa801;p=utils diff --git a/gps/src/main/java/org/wamblee/gps/geometry/Wgs84CoordinateSystem.java b/gps/src/main/java/org/wamblee/gps/geometry/Wgs84CoordinateSystem.java deleted file mode 100644 index d08378da..00000000 --- a/gps/src/main/java/org/wamblee/gps/geometry/Wgs84CoordinateSystem.java +++ /dev/null @@ -1,75 +0,0 @@ -/* - * Copyright 2006 the original author or authors. - * - * 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. - */ - -package org.wamblee.gps.geometry; - -import static java.lang.Math.PI; -import static java.lang.Math.cos; -import static java.lang.Math.sin; - - -/** - * Represents the WGS 84 coordinate system for a GPS measurement identified by - * - * WGS84 models the earth as an ellipse. - * - * @author Erik Brakkee - */ -public class Wgs84CoordinateSystem implements CoordinateSystem { - /* - * Ellipsoide parameters, where the ellipsoide is defined by - * - * (x^2 + y^2)/a^2 + z^2/b^2 = 1 - */ - - /** - * The radius of the ellipse at the equator - */ - private static final double A = 6378137.000; - - /** - * The distance of the North and South poles to the center of the ellipsoide. - */ - private static final double B = 6356752.314; - - - /* (non-Javadoc) - * @see org.wamblee.gpx.CoordinateSystem#toReferenceSystem(org.wamblee.gpx.Coordinates) - */ - public Coordinates toReferenceSystem(Coordinates aCoordinates) { - double latrad = radians(aCoordinates.getX1()); - double lonrad = radians(aCoordinates.getX2()); - double coslat = cos(latrad); - double sinlat = sin(latrad); - double coslon = cos(lonrad); - double sinlon = sin(lonrad); - - double r = A*B/Math.sqrt(B*B*coslat*coslat + A*A*sinlat*sinlat) + aCoordinates.getX3(); - - return new Coordinates(r*coslat*coslon, - r*coslat*sinlon, - r*sinlat); - - } - - private double radians(double aDegrees) { - return aDegrees/180.0*PI; - } -}