Last change
on this file since 8406 was 5226, checked in by bastiK, 12 years ago |
improvements for custom projection
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-
Property svn:eol-style
set to
native
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File size:
1.1 KB
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1 | // License: GPL. For details, see LICENSE file.
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2 | package org.openstreetmap.josm.data.projection.datum;
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3 |
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4 | import org.openstreetmap.josm.data.coor.LatLon;
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5 | import org.openstreetmap.josm.data.projection.Ellipsoid;
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6 |
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7 | /**
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8 | * Datum based of NTV2 grid shift file.
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9 | */
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10 | public class NTV2Datum extends AbstractDatum {
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11 |
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12 | protected NTV2GridShiftFileWrapper nadgrids;
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13 |
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14 | public NTV2Datum(String name, String proj4Id, Ellipsoid ellps, NTV2GridShiftFileWrapper nadgrids) {
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15 | super(name, proj4Id, ellps);
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16 | this.nadgrids = nadgrids;
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17 | }
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18 |
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19 | @Override
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20 | public LatLon toWGS84(LatLon ll) {
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21 | NTV2GridShift gs = new NTV2GridShift(ll);
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22 | nadgrids.getShiftFile().gridShiftForward(gs);
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23 | return new LatLon(ll.lat() + gs.getLatShiftDegrees(), ll.lon() + gs.getLonShiftPositiveEastDegrees());
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24 | }
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25 |
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26 | @Override
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27 | public LatLon fromWGS84(LatLon ll) {
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28 | NTV2GridShift gs = new NTV2GridShift(ll);
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29 | nadgrids.getShiftFile().gridShiftReverse(gs);
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30 | return new LatLon(ll.lat() + gs.getLatShiftDegrees(), ll.lon() + gs.getLonShiftPositiveEastDegrees());
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31 | }
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32 | }
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