A Curious Animal

I would like to have written this post some time ago but time is not something I have in exces.

This post starts when my friend Johann let me know the creation of the GeoToolkit project, a fork of GeoTools, started by one of the originals GeoTools authors. Take a look at project's history to know more details about the reasons.

Next is a simple example showing how to reproject coordinates from WSG84(EPSG:4326) to EPSG:3068 that, for those interested, I used in a program to render CityGML files in a Java 3D viewer called pTolemy3D.

public static boolean translate(GeneralDirectPosition source, GeneralDirectPosition target) { CRSAuthorityFactory factory = AuthorityFactoryFinder.getCRSAuthorityFactory("EPSG", null); try { ProjectedCRS projSource = factory.createProjectedCRS("3068"); GeodeticCRS projTarget = factory.createGeographicCRS("4326"); // NOTE: This is another way to create the right projection: // ProjectedCRS proj = (ProjectedCRS) CRS.decode("EPSG:3068"); // System.out.println("Orig: " + projSource); // System.out.println("Target: " + projTarget); MathTransform transform = CRS.findMathTransform(projSource, projTarget); // System.out.println("Transform: " + transform); try { transform.transform(source, target); return true; // System.out.println("Point Source: " + psource); // System.out.println("Point Target: " + ptarget); } catch (MismatchedDimensionException ex) { Logger.getLogger(GeoUtil.class.getName()).log(Level.SEVERE, null, ex); } catch (TransformException ex) { Logger.getLogger(GeoUtil.class.getName()).log(Level.SEVERE, null, ex); } } catch (NoSuchAuthorityCodeException ex) { Logger.getLogger(GeoUtil.class.getName()).log(Level.SEVERE, null, ex); } catch (FactoryException ex) { Logger.getLogger(GeoUtil.class.getName()).log(Level.SEVERE, null, ex); } return false; }

Not so much, but hope it will be useful for someone and hope more users start to use GeoToolkit.