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Last change
on this file since 5067 was 4285, checked in by bastiK, 13 years ago |
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major projection rework
More modular structure, inspired by Proj.4.
There are almost no semantic changes to the projection algorithms. Mostly factors of 'a' and 180/PI have been moved from one place to the other. In UTM_France_DOM, the ellipsoid conversion for the first 3 projections has been changed from hayford <-> GRS80 to hayford <-> WGS84.
Some redundant algorithms have been removed. In particular:
- UTM_France_DOM used to have its own Transverse Mercator implementation. It is different from the implementation in TransverseMercator.java as it has another series expansion. For EPSG::2975, there are numeric differences on centimeter scale. However, the new data fits better with Proj.4 output.
- Also removed are alternate implementations of LambertConformalConic. (They are all quite similar, though.)
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Property svn:eol-style
set to
native
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File size:
755 bytes
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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 | * A datum with different ellipsoid than WGS84, but does not require
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| 9 | * shift, rotation or scaling.
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| 10 | */
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| 11 | public class CentricDatum extends AbstractDatum {
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| 12 |
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| 13 | public CentricDatum(String name, String proj4Id, Ellipsoid ellps) {
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| 14 | super(name, proj4Id, ellps);
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| 15 | }
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| 16 |
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| 17 | @Override
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| 18 | public LatLon toWGS84(LatLon ll) {
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| 19 | return Ellipsoid.WGS84.cart2LatLon(ellps.latLon2Cart(ll));
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| 20 | }
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| 21 |
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| 22 | @Override
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| 23 | public LatLon fromWGS84(LatLon ll) {
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| 24 | return this.ellps.cart2LatLon(Ellipsoid.WGS84.latLon2Cart(ll));
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| 25 | }
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| 26 |
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| 27 | }
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