Application: gvSIG desktop

package org.gvsig.crs.proj;

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("crsjniproj");

        }

        protected void createCrs(String strCrs) throws CrsProjException {

                cPtr=loadCrs(strCrs);

                int errNo = getErrNo(); 

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

                _strCrs=strCrs;

        }

        protected void deleteCrs() {

                if(cPtr>0) freeCrs(cPtr); 

        }

        public boolean isLatlong() {

                latLong = isLatlong(cPtr);

                if(latLong == 0)

                        return false;

                return true;

        }

        protected long getPtr() throws CrsProjException {

                if (cPtr>0)        return cPtr;

                else throw new CrsProjException(_strCrs);

        }

        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,

                                        CrsProjException {

                int error=operation(firstCoord,secondCoord,thirdCoord,srcCrs.getPtr(),destCrs.getPtr());

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

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

                return error;

        }

        public static void operateSimple(double firstCoord,

                                 double secondCoord,

                                 double thirdCoord,

                                 CrsProj srcCrs,

                                 CrsProj destCrs) throws OperationCrsException, CrsProjException {

                int error = operationSimple(firstCoord, secondCoord, thirdCoord,srcCrs.getPtr(),destCrs.getPtr());

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

        }

        public static void operateArraySimple(double[] Coord,

                                          CrsProj srcCrs,

                                          CrsProj destCrs)throws OperationCrsException,

                                               CrsProjException {

                int error = operationArraySimple(Coord,srcCrs.getPtr(),destCrs.getPtr());

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

        }

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

                int compare = 0;

                try {

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

                } catch (CrsProjException e) {

                        // TODO Auto-generated catch block

                        e.printStackTrace();

                }        

                return compare;

        }

}