Application: gvSIG desktop » gvSIG projections

package org.geotools.referencing.operation.projection;

import java.awt.geom.Point2D;

import java.util.Collection;

import javax.units.NonSI;

import org.geotools.metadata.iso.citation.CitationImpl;

import org.geotools.referencing.NamedIdentifier;

import org.geotools.referencing.operation.projection.MapProjection.AbstractProvider;

import org.opengis.parameter.ParameterDescriptor;

import org.opengis.parameter.ParameterDescriptorGroup;

import org.opengis.parameter.ParameterNotFoundException;

import org.opengis.parameter.ParameterValueGroup;

import org.opengis.referencing.operation.CylindricalProjection;

import org.opengis.referencing.operation.MathTransform;

public class IdrEckertV extends MapProjection {

    private final double longitudeOfCenter;

    protected IdrEckertV(ParameterValueGroup parameters) throws ParameterNotFoundException {

                super(parameters);

        final Collection expected = getParameterDescriptors().descriptors();

        if (expected.contains(Provider.LONGITUDE_OF_CENTER)) {

                longitudeOfCenter = Math.abs(doubleValue(expected,

                                        Provider.LONGITUDE_OF_CENTER, parameters));

            ensureLatitudeInRange(Provider.LONGITUDE_OF_CENTER, longitudeOfCenter, false);

        } else {

            // standard parallel is the equator (Plate Carree or Equirectangular)

                longitudeOfCenter = Double.NaN;

        }

                // TODO Auto-generated constructor stub

        }

        public ParameterDescriptorGroup getParameterDescriptors() {

                // TODO Auto-generated method stub

        return Provider.PARAMETERS;

        }

    public ParameterValueGroup getParameterValues() {

        final ParameterValueGroup values = super.getParameterValues();

        if (!Double.isNaN(longitudeOfCenter)) {

            final Collection expected = getParameterDescriptors().descriptors();

            set(expected,Provider.LONGITUDE_OF_CENTER, values, longitudeOfCenter);

        }

        return values;

    }

        protected Point2D inverseTransformNormalized(double x, double y,

                        Point2D ptDst) throws ProjectionException {

                // TODO Auto-generated method stub

                return null;

        }

        protected Point2D transformNormalized(double x, double y, Point2D ptDst)

                        throws ProjectionException {

                // TODO Auto-generated method stub

                return null;

        }

        public static class Provider extends AbstractProvider {

        public static final ParameterDescriptor LONGITUDE_OF_CENTER = createDescriptor(

                new NamedIdentifier[] {

                    new NamedIdentifier(CitationImpl.OGC,     "longitude_of_center"),

                    new NamedIdentifier(CitationImpl.EPSG,    "Longitude of origin"),

                    new NamedIdentifier(CitationImpl.EPSG,    "Longitude of false origin"),

                    new NamedIdentifier(CitationImpl.GEOTIFF, "ProjCenterLong"),

                    new NamedIdentifier(CitationImpl.EPSG,    "NatOriginLong"),

                    new NamedIdentifier(CitationImpl.EPSG,    "central_meridian"),                

                    new NamedIdentifier(CitationImpl.EPSG,    "CenterLong")

                }, 0.0, -360.0, 360.0, NonSI.DEGREE_ANGLE);

        /**

         * The parameters group. Note the EPSG includes a "Latitude of natural origin" parameter instead

         * of "standard_parallel_1". I have sided with ESRI and Snyder in this case.

         */

        static final ParameterDescriptorGroup PARAMETERS = createDescriptorGroup(new NamedIdentifier[] {

                new NamedIdentifier(CitationImpl.OGC,      "Eckert V"),

                            new NamedIdentifier(CitationImpl.EPSG,     "Eckert-V"),

                            new NamedIdentifier(CitationImpl.EPSG,     "Eckert_V"),

                new NamedIdentifier(new CitationImpl("IDR"), "IDR")//,

//                new NamedIdentifier(CitationImpl.GEOTOOLS, Vocabulary.formatInternational(

//                                    VocabularyKeys.EQUIDISTANT_CYLINDRICAL_PROJECTION))

            }, new ParameterDescriptor[] {

                SEMI_MAJOR,       SEMI_MINOR,

                LONGITUDE_OF_CENTER,

                FALSE_EASTING,    FALSE_NORTHING

            });

                /*String[] parameterName={"central_meridian"};

                projectionParameterList.add(count,parameterName);

                addProjectionParameter(count,"standard_parallel_1");

                addProjectionParameter(count,"false_easting");

                addProjectionParameter(count,"false_northing");*/

        /**

         * Constructs a new provider.

         */

        public Provider() {

            super(PARAMETERS);

        }

        /**

         * Returns the operation type for this map projection.

         */

        protected Class getOperationType() {

                return CylindricalProjection.class;

        }

        /**

         * Creates a transform from the specified group of parameter values.

         *

         * @param  parameters The group of parameter values.

         * @return The created math transform.

         * @throws ParameterNotFoundException if a required parameter was not found.

         */

        public MathTransform createMathTransform(final ParameterValueGroup parameters)

                throws ParameterNotFoundException

        {

            return new IdrEckertV(parameters);

        }

    }

}