svn-gvsig-desktop / trunk / libraries / libJCRS / src / org / gvsig / crs / ogr / Iau2wkt.java @ 8704
History | View | Annotate | Download (3.42 KB)
| 1 |
package org.gvsig.crs.ogr; |
|---|---|
| 2 |
|
| 3 |
import org.gvsig.crs.CrsWkt; |
| 4 |
|
| 5 |
/**
|
| 6 |
* Aunque iau2000 posee la cadena wkt, tendremos que volver a generarla con los
|
| 7 |
* par?metros v?lidos para que no falle con gdal. Lo que haremos ser? recuperar
|
| 8 |
* todos los campos, buscar la proyecci?n correcta y volver a generar una
|
| 9 |
* cadena wkt entendible por gdal
|
| 10 |
* @author Jos? Luis G?mez Mart?nez
|
| 11 |
*
|
| 12 |
*/
|
| 13 |
|
| 14 |
public class Iau2wkt { |
| 15 |
|
| 16 |
String[] projectionsIAU = {"Albers"}; |
| 17 |
String[] projectionsGDAL = {"Albers_Conic_Equal_Area"}; |
| 18 |
CrsWkt datos = null;
|
| 19 |
String cadWKT = ""; |
| 20 |
String[] param_name = null; |
| 21 |
String[] param_value = null; |
| 22 |
|
| 23 |
public Iau2wkt(String wkt) { |
| 24 |
datos = new CrsWkt(wkt);
|
| 25 |
param_name = datos.getParam_name(); |
| 26 |
param_value = datos.getParam_value(); |
| 27 |
} |
| 28 |
|
| 29 |
/**
|
| 30 |
* Formacion de la cadena wkt con los nombres correctos de las proyecciones
|
| 31 |
* de iau2000 para la libreria proj4.
|
| 32 |
* @return
|
| 33 |
*/
|
| 34 |
public String getWkt(){ |
| 35 |
String proj = getNameProjectionWkt(datos.getProjection());
|
| 36 |
|
| 37 |
cadWKT = "PROJCS[\""+ datos.getProjcs()+"\", GEOGCS[\"" + datos.getGeogcs() + "\", DATUM[\""+ datos.getDatumName() + |
| 38 |
"\", SPHEROID[\""+ datos.getSpheroid()[0] + "\", "+ datos.getSpheroid()[1] + ", "+ datos.getSpheroid()[2] +"]], " + |
| 39 |
"PRIMEM[\""+ datos.getPrimen()[0] + "\", "+ datos.getPrimen()[1] +"], UNIT[\""+ datos.getUnit()[0] + "\", " + (Math.PI/180) + |
| 40 |
"]], PROJECTION[\""+ proj + "\"], "; |
| 41 |
|
| 42 |
/*
|
| 43 |
* falta la parte de los par?metros... metodo para nombres...
|
| 44 |
*/
|
| 45 |
for (int i= 0; i< param_name.length;i++){ |
| 46 |
if (proj.equals("Mercator_1SP")){ |
| 47 |
if (param_name[i].equals("Standard_Parallel_1")) |
| 48 |
if (param_value[i].startsWith("-")) |
| 49 |
cadWKT += "PARAMETER[\""+param_name[i]+"\", " + param_value[i].substring(1,param_value[i].length())+ "], "; |
| 50 |
else
|
| 51 |
cadWKT += "PARAMETER[\""+param_name[i]+"\", " + param_value[i]+ "], "; |
| 52 |
else if (param_name[i].equals("Standard_Parallel_2")){} |
| 53 |
else
|
| 54 |
cadWKT += "PARAMETER[\""+param_name[i]+"\", " + param_value[i]+ "], "; |
| 55 |
|
| 56 |
}else
|
| 57 |
cadWKT += "PARAMETER[\""+param_name[i]+"\", " + param_value[i]+ "], "; |
| 58 |
} |
| 59 |
|
| 60 |
cadWKT += "UNIT[\""+ datos.getUnit_p()[0] + "\", 1.0], "; |
| 61 |
cadWKT += "AUTHORITY[\""+ datos.getAuthority()[0] + "\", " + datos.getAuthority()[1] + "]]"; |
| 62 |
|
| 63 |
return cadWKT;
|
| 64 |
} |
| 65 |
|
| 66 |
/*
|
| 67 |
* Metodo auxiliar para el cambio del nombre de la proyeccion.
|
| 68 |
*/
|
| 69 |
private String getNameProjectionWkt(String projection) { |
| 70 |
String proj = null; |
| 71 |
|
| 72 |
for (int i = 0; i<projectionsIAU.length; i++){ |
| 73 |
if (projection.equals(projectionsIAU[i])) {
|
| 74 |
projection = projectionsGDAL[i]; |
| 75 |
} |
| 76 |
} |
| 77 |
|
| 78 |
if (projection.equals("Lambert_Conformal_Conic")){ |
| 79 |
projection = "Lambert_Conformal_Conic_1SP";
|
| 80 |
String standardParallel1 = ""; |
| 81 |
String standardParallel2 = ""; |
| 82 |
for (int i = 0; i < param_name.length; i++) { |
| 83 |
if (param_name[i].equals("Standard_Parallel_1")) { |
| 84 |
standardParallel1 = param_value[i]; |
| 85 |
} |
| 86 |
if (param_name[i].equals("Standard_Parallel_2")) { |
| 87 |
standardParallel2 = param_value[i]; |
| 88 |
projection = "Lambert_Conformal_Conic_2SP";
|
| 89 |
} |
| 90 |
} |
| 91 |
if (standardParallel1.startsWith("-") && standardParallel2.equals(standardParallel1.substring(1, standardParallel1.length()))) |
| 92 |
projection = "Mercator_1SP";
|
| 93 |
} |
| 94 |
|
| 95 |
if (projection.equals("Mercator")){ |
| 96 |
projection = "Mercator_1SP";
|
| 97 |
for (int i = 0; i < param_name.length; i++) { |
| 98 |
if (param_name[i].equals("Standard_Parallel_2")) { |
| 99 |
projection = "Mercator_2SP";
|
| 100 |
} |
| 101 |
} |
| 102 |
} |
| 103 |
proj = projection.replaceAll(" ", "_"); |
| 104 |
return proj;
|
| 105 |
} |
| 106 |
|
| 107 |
|
| 108 |
|
| 109 |
} |