Application: gvSIG desktop » gvSIG projections

/* gvSIG. Sistema de Informaci�n Geogr�fica de la Generalitat Valenciana

 *

 * Copyright (C) 2006 Instituto de Desarrollo Regional and Generalitat Valenciana.

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 2

 * of the License, or (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,USA.

 *

 * For more information, contact:

 *

 *  Generalitat Valenciana

 *   Conselleria d'Infraestructures i Transport

 *   Av. Blasco Ib��ez, 50

 *   46010 VALENCIA

 *   SPAIN

 *

 *      +34 963862235

 *   gvsig@gva.es

 *      www.gvsig.gva.es

 *

 *    or

 *

 *   Instituto de Desarrollo Regional (Universidad de Castilla La-Mancha)

 *   Campus Universitario s/n

 *   02071 Alabacete

 *   Spain

 *

 *   +34 967 599 200

 */

package org.gvsig.crs.proj;

/**

 *

 * @author Miguel Garc�a Jim�nez (garciajimenez.miguel@gmail.com)

 *

 */

public class JNIBaseCrs

{

        protected long cPtr;

        protected int latLong;

        protected String _strCrs;

        protected native long loadCrs(String crs);

        protected native void freeCrs(long crs);

        protected native int isLatlong(long crs);

        protected static native int compareDatums(long datum1, long datum2);

        protected native int getErrno();

        //protected static native String strErrno(int errno);

        protected static native int operation(double[] firstCoord,

                    double[] secondCoord,

                    double[] values,

                    long srcCodeString,

                    long destCodeString);

        protected static native int operationSimple(double firstcoord,

                        double secondcoord,

                        double values,

                        long srcCodeString,

                        long destCodeString);

        protected static native int operationArraySimple(double[] Coord,

                         long srcCodeString,

                         long destCodeString);

        static {

                System.loadLibrary("crsjniproj2.0.1");

        }

        private static final String[] pj_err_list = new String[]{

            "no arguments in initialization list", /*  -1 */

            "no options found in 'init' file", /*  -2 */

            "no colon in init= string", /*  -3 */

            "projection not named", /*  -4 */

            "unknown projection id", /*  -5 */

            "effective eccentricity = 1.", /*  -6 */

            "unknown unit conversion id", /*  -7 */

            "invalid boolean param argument", /*  -8 */

            "unknown elliptical parameter name", /*  -9 */

            "reciprocal flattening (1/f) = 0", /* -10 */

            "|radius reference latitude| > 90", /* -11 */

            "squared eccentricity < 0", /* -12 */

            "major axis or radius = 0 or not given", /* -13 */

            "latitude or longitude exceeded limits", /* -14 */

            "invalid x or y", /* -15 */

            "improperly formed DMS value", /* -16 */

            "non-convergent inverse meridinal dist", /* -17 */

            "non-convergent inverse phi2", /* -18 */

            "acos/asin: |arg| >1.+1e-14", /* -19 */

            "tolerance condition error", /* -20 */

            "conic lat_1 = -lat_2", /* -21 */

            "lat_1 >= 90", /* -22 */

            "lat_1 = 0", /* -23 */

            "lat_ts >= 90", /* -24 */

            "no distance between control points", /* -25 */

            "projection not selected to be rotated", /* -26 */

            "W <= 0 or M <= 0", /* -27 */

            "lsat not in 1-5 range", /* -28 */

            "path not in range", /* -29 */

            "h <= 0", /* -30 */

            "k <= 0", /* -31 */

            "lat_0 = 0 or 90 or alpha = 90", /* -32 */

            "lat_1=lat_2 or lat_1=0 or lat_2=90", /* -33 */

            "elliptical usage required", /* -34 */

            "invalid UTM zone number", /* -35 */

            "arg(s) out of range for Tcheby eval", /* -36 */

            "failed to find projection to be rotated", /* -37 */

            "failed to load NAD27-83 correction file", /* -38 */

            "both n & m must be spec'd and > 0", /* -39 */

            "n <= 0, n > 1 or not specified", /* -40 */

            "lat_1 or lat_2 not specified", /* -41 */

            "|lat_1| == |lat_2|", /* -42 */

            "lat_0 is pi/2 from mean lat", /* -43 */

            "unparseable coordinate system definition", /* -44 */

            "geocentric transformation missing z or ellps", /* -45 */

            "unknown prime meridian conversion id", /* -46 */

        };

        public static String strErrno(int errno) {

            if( errno>=0 ) {

                return "errno "+errno;

            }

            int i = -errno - 1;

            if( i>=pj_err_list.length ) {

                return "invalid projection system error ("+errno+").";

            }

            return pj_err_list[i];

        }

        protected void createCrs(String strCrs) throws CrsProjException {

            long cPtr;

                cPtr=loadCrs(strCrs);

                int errNo = getErrNo();

                // **** Provisional: strErrNo tira la m�quina virtual en Windows. *****

                //TODO: Revisarlo en el c�digo jni.

                //if (errNo<0 && errNo!=-10) throw new CrsProjException("Error creating CRS: "+strErrNo(errNo));

                if (errNo<0 && errNo!=-10) {

                    throw new CrsProjException("Error creating CRS. Erro code = "+errNo);

                }

                this.cPtr = cPtr;

                _strCrs=strCrs;

        }

        protected void deleteCrs() {

                //if(cPtr>0) freeCrs(cPtr);

                if(cPtr>0);

        }

        public boolean isLatlong() {

            if (cPtr==0) {

                return false;

            }

                latLong = isLatlong(cPtr);

                if(latLong == 0)

                        return false;

                return true;

        }

        protected long getPtr() {

                /*if (cPtr>0)        return cPtr;

                else throw new CrsProjException(_strCrs);*/

                return cPtr;

        }

        public String getStr() {

                return _strCrs;

        }

        public void changeStrCrs(String code) {

                _strCrs += code;

        }

        protected int getErrNo(){

                return getErrno();

        }

        protected static String strErrNo(int errno){

                return strErrno(errno);

        }

        //OPERATIONS

        public static int operate(double[] firstCoord,

                     double[] secondCoord,

                     double[] thirdCoord,

                     CrsProj srcCrs,

                     CrsProj destCrs)

                         throws OperationCrsException{

            long srcCrsPtr = srcCrs.getPtr();

            long destCrsPtr = destCrs.getPtr();

        if (srcCrsPtr == 0 || destCrsPtr == 0){

            throw new OperationCrsException(srcCrs,destCrs, "");

        }

                int error=operation(firstCoord,secondCoord,thirdCoord,srcCrsPtr,destCrsPtr);

                // error -38: el punto transformar est� fuera del �mbito del nadgrid

                // **** Provisional: strErrNo tira la m�quina virtual en Windows. *****

                //TODO: Revisarlo en el c�digo jni.

                //if(error!=0 && error !=-38) throw new OperationCrsException(srcCrs,destCrs, strErrNo(error));

                if(error!=0 && error !=-38) {

                    throw new OperationCrsException(error, srcCrs,destCrs, "Error code = "+error+", "+strErrno(error));

                }

                return error;

        }

        public static void operateSimple(double firstCoord,

                                 double secondCoord,

                                 double thirdCoord,

                                 CrsProj srcCrs,

                                 CrsProj destCrs) throws OperationCrsException{

        long srcCrsPtr = srcCrs.getPtr();

        long destCrsPtr = destCrs.getPtr();

        if (srcCrsPtr == 0 || destCrsPtr == 0){

            throw new OperationCrsException(srcCrs,destCrs, "");

        }

                int error = operationSimple(firstCoord, secondCoord, thirdCoord,srcCrsPtr,destCrsPtr);

                // **** Provisional: strErrNo tira la m�quina virtual en Windows. *****

                //TODO: Revisarlo en el c�digo jni.

                //if(error!=1) throw new OperationCrsException(srcCrs,destCrs, strErrNo(error));

                if(error!=1) throw new OperationCrsException(error, srcCrs,destCrs, "Error code = "+error+", "+strErrno(error));

        }

        public static void operateArraySimple(double[] Coord,

                                          CrsProj srcCrs,

                                          CrsProj destCrs)throws OperationCrsException{

        long srcCrsPtr = srcCrs.getPtr();

        long destCrsPtr = destCrs.getPtr();

        if (srcCrsPtr == 0 || destCrsPtr == 0){

            throw new OperationCrsException(srcCrs,destCrs, "");

        }

                int error = operationArraySimple(Coord,srcCrsPtr,destCrsPtr);

                // **** Provisional: strErrNo tira la m�quina virtual en Windows. *****

                //TODO: Revisarlo en el c�digo jni.

                //if(error!=1) throw new OperationCrsException(srcCrs,destCrs, strErrNo(error));

                if(error!=1) throw new OperationCrsException(error, srcCrs,destCrs,"Error code = "+error+", "+strErrno(error));

        }

        public static int compareDatums(CrsProj crs1, CrsProj crs2){

                int compare = 0;

        long crs1Ptr = crs1.getPtr();

        long cr2Ptr = crs2.getPtr();

        if (crs1Ptr == 0 || cr2Ptr == 0){

            throw new IllegalArgumentException("Coordinate compare error: " + crs1.getStr() + " to " + crs2.getStr());

        }

                compare = compareDatums(crs1.getPtr(),crs2.getPtr());

                return compare;

        }

}