Examples of org.geotools.geometry.DirectPosition2D

org.geotools.geometry.DirectPosition2D
Holds the coordinates for a two-dimensional position within some coordinate reference system.
Note 1:
This class inherits {@linkplain #x x} and {@linkplain #y y} fields. But despite their names,they don't need to be oriented toward {@linkplain org.opengis.referencing.cs.AxisDirection#EAST East} and {@linkplain org.opengis.referencing.cs.AxisDirection#NORTH North}. The (x,y) axis can have any orientation and should be understood as "ordinate 0" and "ordinate 1" values instead. This is not specific to this implementation; in Java2D too, the visual axis orientation depend on the {@linkplain java.awt.Graphics2D#getTransform affine transform in the graphics context}.
The rational for avoiding axis orientation restriction is that other {@link DirectPosition}implementation do not have such restriction, and it would be hard to generalize (what to do with {@linkplain org.opengis.referencing.cs.AxisDirection#NORTH_EAST North-East} direction?).

Note 2:
Do not mix instances of this class with ordinary {@link Point2D} instances in a{@link java.util.HashSet} or as {@link java.util.HashMap} keys. It is not possible tomeet both {@link Point2D#hashCode} and {@link DirectPosition#hashCode} contract, and this classchoose to implements the later. Concequently, {@link #hashCode} is inconsistent with{@link Point2D#equals} (but is consistent with {@link DirectPosition#equals}).
In other words, it is safe to add instances of {@code DirectPosition2D} in a{@code HashSet}, but it is unsafe to add them in a {@code HashSet}. Collections that do not rely on {@link Object#hashCode}, like {@link java.util.ArrayList}, are safe in all cases.
@since 2.0 @source $URL$ @version $Id$ @author Martin Desruisseaux (IRD) @see DirectPosition1D @see GeneralDirectPosition @see java.awt.geom.Point2D

            assertNotNull(names);
            assertEquals(2,names.length);
            assertEquals("ROOT/LEVEL1/V2",names[0]);
            GridCoverage2D grid = reader.read("ROOT/LAI", null);
            assertNotNull(grid);
            byte[] byteValue = grid.evaluate(new
                    DirectPosition2D(DefaultGeographicCRS.WGS84, 12, 70 ), new byte[1]);
            assertEquals(20,byteValue[0]);


            byteValue = grid.evaluate(new
                    DirectPosition2D(DefaultGeographicCRS.WGS84, 23, 40), new byte[1]);
            assertEquals(90,byteValue[0]);




        } finally {

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            assertNotNull(names);
            assertEquals(2,names.length);


            GridCoverage2D grid = reader.read("O3", null);
            assertNotNull(grid);
            float[] value = grid.evaluate((DirectPosition) new
                    DirectPosition2D(DefaultGeographicCRS.WGS84, 5, 45 ), new float[1]);
            assertEquals(47.63341f,value[0],0.00001);


            value = grid.evaluate((DirectPosition) new
                    DirectPosition2D(DefaultGeographicCRS.WGS84, 5, 45.125), new float[1]);
            assertEquals(52.7991f, value[0],0.000001);




        } finally {

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            if (parameters.size() == 3) {
                // 1D
                geom = new DirectPosition1D(crs);
            } else {
                // 2D
                geom = new DirectPosition2D(crs);
                geom.setOrdinate(1, parameters.get(3).evaluate(object, Double.class));
            }
            geom.setOrdinate(0, parameters.get(2).evaluate(object, Double.class));
        } else {
            // should only have points, 1 for 1D, 2 for 2D
            if (parameters.size() > 2) {
                throw new IllegalArgumentException(
                        "Too many parameters for toDirectPosition function: "
                                + parameters.toString() + ". " + USAGE);
            }
            if (parameters.size() == 1) {
                // 1D
                geom = new DirectPosition1D();
            } else {
                // 2D
                geom = new DirectPosition2D();
                geom.setOrdinate(1, parameters.get(1).evaluate(object, Double.class));
            }
            geom.setOrdinate(0, param1.evaluate(object, Double.class));
        }

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        assertSame(response.getSampleDimension(0), cov.getSampleDimension(0));
        assertSame(response.getSources(), cov.getSources());
        assertArrayEquals(response.getOptimalDataBlockSizes(), cov.getOptimalDataBlockSizes());


        // Evaluation of the same position
        DirectPosition2D pos = new DirectPosition2D(cov.getEnvelope2D().getCenterX(), cov
                .getEnvelope2D().getCenterY());
        
        assertArrayEquals(response.evaluate(pos, new byte[1]), cov.evaluate(pos, new byte[1]));
    }

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        CoordinateReferenceSystem crs1 = factory.createCoordinateReferenceSystem("4326");
        CoordinateReferenceSystem crs2 = factory.createCoordinateReferenceSystem("3005");


        // reproject
        MathTransform transform = CRS.findMathTransform(crs1, crs2,true);
        DirectPosition pos = new DirectPosition2D(48.417, 123.35);
        transform.transform(pos, null);
    }

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            default:
                throw new IllegalArgumentException("Unsupported geometry type");
        }
        
        CoordinateReferenceSystem crs = feature.getFeatureType().getCoordinateReferenceSystem();
        return new DirectPosition2D(crs, c.x, c.y);
    }

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        CoordinateReferenceSystem crs1 = factory.createCoordinateReferenceSystem("4326");
        CoordinateReferenceSystem crs2 = factory.createCoordinateReferenceSystem("3005");


        // reproject
        MathTransform transform = CRS.findMathTransform(crs1, crs2,true);
        DirectPosition pos = new DirectPosition2D(48.417, 123.35);
        transform.transform(pos, null);
    }

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        CoordinateReferenceSystem crs1 = factory.createCoordinateReferenceSystem("4326");
        CoordinateReferenceSystem crs2 = factory.createCoordinateReferenceSystem("3005");


        // reproject
        MathTransform transform = CRS.findMathTransform(crs1, crs2,true);
        DirectPosition pos = new DirectPosition2D(48.417, 123.35);
        transform.transform(pos, null);        
    }

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                    CoordinateReferenceSystem crs2 = acquireCRS(code2);


                    // reproject
                    MathTransform transform = CRS.findMathTransform(crs1, crs2,
                            true);
                    DirectPosition pos = new DirectPosition2D(48.417, 123.35);
                    try {
                         transform.transform(pos, null);
                    } catch (Exception e) {
                        // chomp
                    }

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        CoordinateReferenceSystem crs1 = factory.createCoordinateReferenceSystem("4326");
        CoordinateReferenceSystem crs2 = factory.createCoordinateReferenceSystem("3005");


        // reproject
        MathTransform transform = CRS.findMathTransform(crs1, crs2,true);
        DirectPosition pos = new DirectPosition2D(48.417, 123.35);
        transform.transform(pos, null);
    }

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