Examples with BursaWolfParameters org.apache.sis.referencing.datum.BursaWolfParameters used on opensource projects

Example 6 with BursaWolfParameters

use of org.apache.sis.referencing.datum.BursaWolfParameters in project sis by apache.

the class ServicesForMetadata method createToWGS84.

/**
 * Creates the {@code TOWGS84} element during parsing of a WKT version 1.
 *
 * @param  values  the 7 Bursa-Wolf parameter values.
 * @return the {@link BursaWolfParameters}.
 *
 * @since 0.6
 */
@Override
public Object createToWGS84(final double[] values) {
    final BursaWolfParameters info = new BursaWolfParameters(CommonCRS.WGS84.datum(), null);
    info.setValues(values);
    return info;
}

Example 7 with BursaWolfParameters

use of org.apache.sis.referencing.datum.BursaWolfParameters in project sis by apache.

the class GeocentricAffine method createParameters.

/**
 * Creates parameter values for a Molodensky, Geocentric Translation or Position Vector transformation.
 *
 * @param  descriptor     the {@code PARAMETERS} constant of the subclass describing the operation to create.
 * @param  parameters     Bursa-Wolf parameters from which to get the values.
 * @param  isTranslation  {@code true} if the operation contains only translation terms.
 * @return the operation parameters with their values initialized.
 */
private static Parameters createParameters(final ParameterDescriptorGroup descriptor, final BursaWolfParameters parameters, final boolean isTranslation) {
    final Parameters values = Parameters.castOrWrap(descriptor.createValue());
    values.getOrCreate(TX).setValue(parameters.tX);
    values.getOrCreate(TY).setValue(parameters.tY);
    values.getOrCreate(TZ).setValue(parameters.tZ);
    if (!isTranslation) {
        values.getOrCreate(RX).setValue(parameters.rX);
        values.getOrCreate(RY).setValue(parameters.rY);
        values.getOrCreate(RZ).setValue(parameters.rZ);
        values.getOrCreate(DS).setValue(parameters.dS);
    }
    return values;
}

Example 8 with BursaWolfParameters

use of org.apache.sis.referencing.datum.BursaWolfParameters in project sis by apache.

the class EPSGFactoryTest method testGeographic2D.

/**
 * Tests the "Datum 73" geographic CRS (EPSG:4274), which has a datum different than the WGS84 one.
 *
 * @throws FactoryException if an error occurred while querying the factory.
 */
@Test
@DependsOnMethod("testWGS84")
public void testGeographic2D() throws FactoryException {
    final EPSGFactory factory = TestFactorySource.factory;
    assumeNotNull(factory);
    final GeographicCRS crs = factory.createGeographicCRS("4274");
    assertEpsgNameAndIdentifierEqual("Datum 73", 4274, crs);
    assertEpsgNameAndIdentifierEqual("Datum 73", 6274, crs.getDatum());
    assertAxisDirectionsEqual("EPSG::6422", crs.getCoordinateSystem(), AxisDirection.NORTH, AxisDirection.EAST);
    final BursaWolfParameters[] bwp = ((DefaultGeodeticDatum) crs.getDatum()).getBursaWolfParameters();
    assertTrue("Expected a transformation to WGS84.", bwp.length >= 1);
    assertSame("CRS shall be cached", crs, factory.createCoordinateReferenceSystem("4274"));
}

Example 9 with BursaWolfParameters

use of org.apache.sis.referencing.datum.BursaWolfParameters in project sis by apache.

the class EPSGFactoryTest method testWGS84.

/**
 * Tests the "WGS 84" geographic CRS (EPSG:4326).
 *
 * @throws FactoryException if an error occurred while querying the factory.
 */
@Test
public void testWGS84() throws FactoryException {
    final EPSGFactory factory = TestFactorySource.factory;
    assumeNotNull(factory);
    final GeographicCRS crs = factory.createGeographicCRS("EPSG:4326");
    assertEpsgNameAndIdentifierEqual("WGS 84", 4326, crs);
    assertEpsgNameAndIdentifierEqual("World Geodetic System 1984", 6326, crs.getDatum());
    assertAxisDirectionsEqual("EPSG:6422", crs.getCoordinateSystem(), AxisDirection.NORTH, AxisDirection.EAST);
    final BursaWolfParameters[] bwp = ((DefaultGeodeticDatum) crs.getDatum()).getBursaWolfParameters();
    assertEquals("Expected no Bursa-Wolf parameters.", 0, bwp.length);
    assertSame("CRS shall be cached", crs, factory.createCoordinateReferenceSystem("4326"));
    assertSame("Shall accept \"::\"", crs, factory.createGeographicCRS("EPSG::4326"));
}

Example 10 with BursaWolfParameters

use of org.apache.sis.referencing.datum.BursaWolfParameters in project sis by apache.

the class Proj4 method definition.

/**
 * Infers a {@literal Proj.4} definition from the given projected, geographic or geocentric coordinate reference system.
 * This method does not need the Proj.4 native library; it can be used in a pure Java application.
 * However the returned definition string may differ depending on whether the Proj.4 library is available or not.
 *
 * @param  crs  the coordinate reference system for which to create a Proj.4 definition.
 * @return the definition of the given CRS in a Proj.4 format.
 * @throws FactoryException if the Proj.4 definition string can not be created from the given CRS.
 */
public static String definition(final CoordinateReferenceSystem crs) throws FactoryException {
    ArgumentChecks.ensureNonNull("crs", crs);
    /*
         * If the given CRS object is associated to a Proj.4 structure, let Proj.4 formats itself
         * the definition string. Note that this operation may fail if there is no Proj.4 library
         * in the current system, or no JNI bindings to that library.
         */
    try {
        for (final Identifier id : crs.getIdentifiers()) {
            if (id instanceof PJ) {
                return ((PJ) id).getCode();
            }
        }
    } catch (UnsatisfiedLinkError e) {
        // Thrown the first time that we try to use the library.
        Logging.unexpectedException(Logging.getLogger(Modules.GDAL), Proj4.class, "definition", e);
    } catch (NoClassDefFoundError e) {
        // Thrown on all attempts after the first one.
        Logging.recoverableException(Logging.getLogger(Modules.GDAL), Proj4.class, "definition", e);
    }
    /*
         * If we found no Proj.4 structure, formats the definition string ourself. The string may differ from
         * what Proj.4 would have given. In particular, we do not provide "+init=" or "+datum=" parameter.
         * But the definition should still be semantically equivalent.
         */
    final String method;
    final GeodeticDatum datum;
    final ParameterValueGroup parameters;
    final CoordinateSystem cs = crs.getCoordinateSystem();
    if (crs instanceof GeodeticCRS) {
        if (cs instanceof EllipsoidalCS) {
            method = "latlon";
        } else if (cs instanceof CartesianCS) {
            method = "geocent";
        } else {
            throw new FactoryException(Errors.format(Errors.Keys.UnsupportedCoordinateSystem_1, cs.getClass()));
        }
        datum = ((GeodeticCRS) crs).getDatum();
        parameters = null;
    } else if (crs instanceof ProjectedCRS) {
        Projection c = ((ProjectedCRS) crs).getConversionFromBase();
        datum = ((ProjectedCRS) crs).getDatum();
        method = name(c.getMethod());
        parameters = c.getParameterValues();
    } else {
        throw new FactoryException(Errors.format(Errors.Keys.UnsupportedType_1, crs.getClass()));
    }
    /*
         * Append the map projection parameters. Those parameters may include axis lengths (a and b),
         * but not necessarily. If axis lengths are specified, then we will ignore the Ellipsoid instance
         * associated to the CRS.
         */
    final StringBuilder definition = new StringBuilder(100);
    definition.append(Proj4Factory.PROJ_PARAM).append(method);
    boolean hasSemiMajor = false;
    boolean hasSemiMinor = false;
    if (parameters != null) {
        definition.append(Proj4Factory.STANDARD_OPTIONS);
        for (final GeneralParameterValue parameter : parameters.values()) {
            if (parameter instanceof ParameterValue<?>) {
                final ParameterValue<?> pv = (ParameterValue<?>) parameter;
                final Object value;
                Unit<?> unit = pv.getUnit();
                if (unit != null) {
                    unit = Units.isAngular(unit) ? Units.DEGREE : unit.getSystemUnit();
                    // Always in metres or degrees.
                    value = pv.doubleValue(unit);
                } else {
                    value = pv.getValue();
                    if (value == null) {
                        continue;
                    }
                }
                final String pn = name(parameter.getDescriptor());
                hasSemiMajor |= pn.equals("a");
                hasSemiMinor |= pn.equals("b");
                definition.append(" +").append(pn).append('=').append(value);
            }
        }
    }
    /*
         * Append datum information: axis lengths if they were not part of the parameters, then prime meridian.
         */
    final Ellipsoid ellipsoid = datum.getEllipsoid();
    if (!hasSemiMajor)
        definition.append(" +a=").append(ellipsoid.getSemiMajorAxis());
    if (!hasSemiMinor)
        definition.append(" +b=").append(ellipsoid.getSemiMinorAxis());
    final PrimeMeridian pm = datum.getPrimeMeridian();
    if (pm != null) {
        double lon = pm.getGreenwichLongitude();
        final Unit<Angle> unit = pm.getAngularUnit();
        if (unit != null) {
            lon = unit.getConverterTo(Units.DEGREE).convert(lon);
        }
        definition.append(" +pm=").append(lon);
    }
    /*
         * Appends axis directions. This method always format a vertical direction (up or down)
         * even if the coordinate system is two-dimensional, because Proj.4 seems to require it.
         * Also extract axis units in the process.
         */
    // Horizontal at index 0, vertical at index 1.
    final Unit<?>[] units = new Unit<?>[2];
    boolean validCS = true;
    definition.append(' ').append(Proj4Factory.AXIS_ORDER_PARAM);
    final int dimension = Math.min(cs.getDimension(), 3);
    boolean hasVertical = false;
    for (int i = 0; i < dimension; i++) {
        final CoordinateSystemAxis axis = cs.getAxis(i);
        final AxisDirection dir = axis.getDirection();
        int unitIndex = 0;
        if (!AxisDirections.isCardinal(dir)) {
            if (!AxisDirections.isVertical(dir)) {
                throw new FactoryException(Errors.format(Errors.Keys.UnsupportedAxisDirection_1, dir));
            }
            hasVertical = true;
            unitIndex = 1;
        }
        final Unit<?> old = units[unitIndex];
        units[unitIndex] = axis.getUnit();
        validCS &= (old == null || old.equals(units[unitIndex]));
        definition.appendCodePoint(Character.toLowerCase(dir.name().codePointAt(0)));
    }
    if (!hasVertical && dimension < 3) {
        // Add a UP direction if not already present.
        definition.append('u');
    }
    /*
         * Append units of measurement, then verify the coordinate system validity.
         */
    for (int i = 0; i < units.length; i++) {
        final Unit<?> unit = units[i];
        if (unit != null && !unit.equals(Units.DEGREE) && !unit.equals(Units.METRE)) {
            validCS &= Units.isLinear(unit);
            definition.append(" +");
            // "+vto_meter" parameter.
            if (i == 1)
                definition.append('v');
            definition.append("to_meter=").append(Units.toStandardUnit(unit));
        }
    }
    /*
         * Append the "+towgs84" element if any. This is the last piece of information.
         * Note that the use of a "+towgs84" parameter is an "early binding" approach,
         * which is usually not recommended. But Proj4 works that way.
         */
    if (validCS) {
        if (datum instanceof DefaultGeodeticDatum) {
            for (final BursaWolfParameters bwp : ((DefaultGeodeticDatum) datum).getBursaWolfParameters()) {
                if (Utilities.equalsIgnoreMetadata(CommonCRS.WGS84.datum(), bwp.getTargetDatum())) {
                    definition.append(" +towgs84=").append(bwp.tX).append(',').append(bwp.tY).append(',').append(bwp.tZ);
                    if (!bwp.isTranslation()) {
                        definition.append(',').append(bwp.rX).append(',').append(bwp.rY).append(',').append(bwp.rZ).append(',').append(bwp.dS);
                    }
                    break;
                }
            }
        }
        return definition.toString();
    }
    /*
         * If we reach this point, we detected a coordinate system that we can not format as a
         * Proj.4 definition string. Format an error message with axis directions and units.
         */
    definition.setLength(0);
    definition.append('(');
    for (int i = 0; i < units.length; i++) {
        final CoordinateSystemAxis axis = cs.getAxis(i);
        if (i != 0)
            definition.append(", ");
        definition.append(axis.getUnit()).append(' ').append(Types.getCodeName(axis.getDirection()));
    }
    throw new FactoryException(Errors.format(Errors.Keys.IllegalCoordinateSystem_1, definition.append(')')));
}