Last change
on this file since 6142 was 5237, checked in by bastiK, 12 years ago |
projection: minor improvements
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Property svn:eol-style
set to
native
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File size:
967 bytes
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1 | // License: GPL. For details, see LICENSE file.
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2 | package org.openstreetmap.josm.data.projection.proj;
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3 |
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4 | import static java.lang.Math.*;
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5 |
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6 | import static org.openstreetmap.josm.tools.I18n.tr;
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7 |
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8 | import org.openstreetmap.josm.data.projection.ProjectionConfigurationException;
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9 |
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10 | /**
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11 | * Mercator Projection.
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12 | */
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13 | public class Mercator implements Proj {
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14 |
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15 | @Override
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16 | public String getName() {
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17 | return tr("Mercator");
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18 | }
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19 |
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20 | @Override
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21 | public String getProj4Id() {
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22 | return "josm:smerc"; // "merc" is ellipsoidal Mercator projection in PROJ.4
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23 | }
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24 |
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25 | @Override
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26 | public void initialize(ProjParameters params) throws ProjectionConfigurationException {
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27 | }
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28 |
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29 | @Override
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30 | public double[] project(double lat_rad, double lon_rad) {
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31 | return new double[] { lon_rad, log(tan(PI/4 + lat_rad/2)) };
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32 | }
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33 |
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34 | @Override
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35 | public double[] invproject(double east, double north) {
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36 | return new double[] { atan(sinh(north)), east };
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37 | }
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38 |
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39 | }
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