Application: gvSIG desktop » gvSIG projections

package org.gvsig.crs.ogr;

import org.gvsig.crs.CrsWkt;

public class Esri2wkt {

        CrsWkt datos = null;

        String cadWKT = "";

        String[] param_name = null;

        String[] param_value = null;

        public Esri2wkt(String wkt) {

                datos = new CrsWkt(wkt);                

                param_name = datos.getParam_name();

                param_value = datos.getParam_value();

        }

        /**

         * Formacion de la cadena wkt con los nombres correctos de las proyecciones

         * de esri para la libreria proj4.

         * @return

         */

        public String getWkt(){

                String proj = getNameProjectionWkt(datos.getProjection());

                cadWKT = "PROJCS[\""+ datos.getProjcs()+"\", GEOGCS[\"" + datos.getGeogcs() + "\", DATUM[\""+ datos.getDatumName() +

                "\", SPHEROID[\""+ datos.getSpheroid()[0] + "\", "+ datos.getSpheroid()[1] + ", "+ datos.getSpheroid()[2] +"]], " +

                "PRIMEM[\""+ datos.getPrimen()[0] + "\", "+ datos.getPrimen()[1] +"], UNIT[\""+ datos.getUnit()[0] + "\", " + (Math.PI/180) +

                "]], PROJECTION[\""+ proj + "\"], ";

                /*

                 * falta la parte de los par?metros... metodo para nombres...

                 */

                for (int i= 0; i< param_name.length;i++){

                        cadWKT += "PARAMETER[\""+param_name[i]+"\", " + param_value[i]+ "], ";

                }

                cadWKT += "UNIT[\""+ datos.getUnit_p()[0] + "\", 1.0], ";

                cadWKT += "AUTHORITY[\""+ datos.getAuthority()[0] + "\", " + datos.getAuthority()[1] + "]]";

                return cadWKT;

        }

        /** 

         * Metodo auxiliar para el cambio del nombre de la proyeccion.

         */        

        private String getNameProjectionWkt(String projection) {

                if (projection.equals("Lambert_Conformal_Conic")){

                        projection = "Lambert_Conformal_Conic_1SP";

                        for (int i = 0; i < param_name.length; i++) {                                

                                if (param_name[i].equals("Standard_Parallel_2")) {

                                        projection = "Lambert_Conformal_Conic_2SP";

                                }

                        }                        

                }                                

                return projection;

        }

}