Examples of org.geotools.geometry.jts.GeometryCoordinateSequenceTransformer

org.geotools.geometry.jts.GeometryCoordinateSequenceTransformer
Service object that takes a geometry and applies a {@link MathTransform} to the coordinates it contains, creating a new geometry as the transformed output.
The standard usage pattern is to supply a {@link MathTransform} and @link CoordinateReferenceSystem} explicitly.The {@link #transform(Geometry)} method can then be used to construct transformed geometries using the {@link GeometryFactory} and {@link CoordinateSequenceFactory} of the input geometry. @author Andrea Aime @author Martin Davis @source $URL$

   * 
   * @return transformation to apply
   */
  private GeometryCoordinateSequenceTransformer getTransformer() {
    if (unitToPixel == null) {
      unitToPixel = new GeometryCoordinateSequenceTransformer();
      unitToPixel.setMathTransform(ProjectiveTransform.create(new AffineTransform(scale, 0, 0, -scale, -scale
          * panOrigin.x, scale * panOrigin.y)));
    }
    return unitToPixel;
  }

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                    if ( source != null && target != null && !CRS.equalsIgnoreMetadata(source, target)) {
                        try {
                            //TODO: this code should be shared with the code
                            // from ReprojectingFeatureCollection --JD
                            MathTransform tx = CRS.findMathTransform(source, target, true);
                            GeometryCoordinateSequenceTransformer gtx = 
                                new GeometryCoordinateSequenceTransformer();
                            gtx.setMathTransform(tx);
                            
                            values[j] = gtx.transform(geometry);    
                        }
                        catch( Exception e ) {
                            String msg = "Failed to reproject geometry:" + e.getLocalizedMessage(); 
                            throw new WFSTransactionException( msg, e );
                        }

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        if (source != null) {
            MathTransform2D tx = (MathTransform2D) ReferencingFactoryFinder
                    .getCoordinateOperationFactory(hints).createOperation(source, target)
                    .getMathTransform();


            GeometryCoordinateSequenceTransformer transformer = new GeometryCoordinateSequenceTransformer();
            transformer.setMathTransform(tx);
            transformers.put(source, transformer);
        } else {
            throw new RuntimeException("Source was null in trying to create a reprojected feature collection!");
        }
    }

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                }


                if (crs != null) {
                    // if equal, nothing to do
                    if (!crs.equals(target)) {
                        GeometryCoordinateSequenceTransformer transformer = (GeometryCoordinateSequenceTransformer) transformers
                                .get(crs);


                        if (transformer == null) {
                            transformer = new GeometryCoordinateSequenceTransformer();


                            MathTransform2D tx;


                            try {
                                tx = (MathTransform2D) ReferencingFactoryFinder
                                        .getCoordinateOperationFactory(hints).createOperation(crs,
                                                target).getMathTransform();
                            } catch (Exception e) {
                                String msg = "Could not transform for crs: " + crs;
                                throw (IOException) new IOException(msg).initCause(e);
                            }


                            transformer.setMathTransform(tx);
                            transformers.put(crs, transformer);
                        }


                        // do the transformation
                        try {
                            object = transformer.transform(geometry);
                        } catch (TransformException e) {
                            String msg = "Error occured transforming " + geometry.toString();
                            throw (IOException) new IOException(msg).initCause(e);
                        }
                    }

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    assert geomCrs != null;
    assert reprojectCrs != null;


    CoordinateSequenceFactory csFactory;
    CoordinateSequenceTransformer csTransformer;
    GeometryCoordinateSequenceTransformer transformer;


    csFactory = gFactory.getCoordinateSequenceFactory();
    csTransformer = new CoordSeqFactoryPreservingCoordinateSequenceTransformer(csFactory);
    transformer = new GeometryCoordinateSequenceTransformer(csTransformer);
    MathTransform mathTransform;
    try {
      mathTransform = CRS.findMathTransform(geomCrs, reprojectCrs, true);
    } catch (FactoryException e) {
      throw new OperationNotFoundException(e.getMessage());
    }


    transformer.setMathTransform(mathTransform);


    return transformer;
  }

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      return geom;
    }


    GeometryFactory gFactory = geom.getFactory();


    GeometryCoordinateSequenceTransformer transformer;
    transformer = getTransformer(gFactory, geomCrs, reprojectCrs);
    Geometry geometry;
    try {
      geometry = transformer.transform(geom);
    } catch (TransformException e) {
      throw e;
    }
    return geometry;
  }

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        } else if (projObj instanceof String) {
            toProj = new Projection(getParentScope(), (String) projObj);
        } else {
            throw new RuntimeException("Argument must be a Projection instance or string identifier.");
        }
        GeometryCoordinateSequenceTransformer gt = new GeometryCoordinateSequenceTransformer();
        try {
            gt.setMathTransform(CRS.findMathTransform(fromProj.unwrap(), toProj.unwrap()));
        } catch (FactoryException e) {
            throw new RuntimeException("Failed to find transform.", e);
        }
        com.vividsolutions.jts.geom.Geometry transGeom;
        try {
            transGeom = gt.transform((com.vividsolutions.jts.geom.Geometry) this.unwrap());
        } catch (TransformException e) {
            throw new RuntimeException("Failed to transform.", e);
        }
        Geometry transformed = (Geometry) GeometryWrapper.wrap(getParentScope(), transGeom);
        transformed.projection = toProj;

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        target = CRS.decode("EPSG:3005");


        MathTransform2D tx = (MathTransform2D) ReferencingFactoryFinder
                .getCoordinateOperationFactory(null).createOperation(crs, target)
                .getMathTransform();
        transformer = new GeometryCoordinateSequenceTransformer();
        transformer.setMathTransform(tx);
    }

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      "PROJCS[\"BC_Albers\",GEOGCS[\"GCS_North_American_1983\",DATUM[\"North_American_Datum_1983\",SPHEROID[\"GRS_1980\",6378137,298.257222101],TOWGS84[0,0,0]],PRIMEM[\"Greenwich\",0],UNIT[\"Degree\",0.017453292519943295]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"False_Easting\",1000000],PARAMETER[\"False_Northing\",0],PARAMETER[\"Central_Meridian\",-126],PARAMETER[\"Standard_Parallel_1\",50],PARAMETER[\"Standard_Parallel_2\",58.5],PARAMETER[\"Latitude_Of_Origin\",45],UNIT[\"Meter\",1],AUTHORITY[\"EPSG\",\"42102\"]]"  
    );
    
    MathTransform2D tx = (MathTransform2D) ReferencingFactoryFinder.getCoordinateOperationFactory(null)
    .createOperation(crs,target).getMathTransform();
    transformer = new GeometryCoordinateSequenceTransformer();
    transformer.setMathTransform( tx );
                transformer.setCoordinateReferenceSystem( target );
  }

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        if ( target == null ) {
          throw new NullPointerException("destination crs");
        }
        
        this.transform = transform(source, target);
        transformer = new GeometryCoordinateSequenceTransformer();
    }

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Related Classes of org.geotools.geometry.jts.GeometryCoordinateSequenceTransformer

com.vividsolutions.jts.geom.CoordinateSequence

com.vividsolutions.jts.geom.CoordinateSequenceFactory

com.vividsolutions.jts.geom.Geometry

com.vividsolutions.jts.geom.GeometryCollection

com.vividsolutions.jts.geom.GeometryFactory

com.vividsolutions.jts.geom.LinearRing

com.vividsolutions.jts.geom.LineString

com.vividsolutions.jts.geom.MultiLineString

com.vividsolutions.jts.geom.MultiPoint

com.vividsolutions.jts.geom.MultiPolygon

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