Examples of org.opengis.referencing.operation.MathTransform.transform()

Package org.opengis.referencing.operation

Class org.opengis.referencing.operation.MathTransform

Examples of org.opengis.referencing.operation.MathTransform.transform()

org.opengis.referencing.operation.MathTransform.transform()
Transforms the specified {@code ptSrc} and stores the result in{@code ptDst}. If {@code ptDst} is {@code null}, a new {@link DirectPosition} object is allocated and then the result of thetransformation is stored in this object. In either case, {@code ptDst}, which contains the transformed point, is returned for convenience. If {@code ptSrc} and {@code ptDst} are the same object,the input point is correctly overwritten with the transformed point. @param ptSrc the specified coordinate point to be transformed. @param ptDst the specified coordinate point that stores the result of transforming{@code ptSrc}, or {@code null}. @return the coordinate point after transforming {@code ptSrc} and storing the resultin {@code ptDst}, or a newly created point if {@code ptDst} was null. @throws MismatchedDimensionException if {@code ptSrc} or{@code ptDst} doesn't have the expected dimension. @throws TransformException if the point can't be transformed.

                
        CoordinateOperation op = ReferencingFactoryFinder.getCoordinateOperationFactory(null).createOperation( WGS84, WGS84 );
        MathTransform math = op.getMathTransform();
                
        DirectPosition pt1 = new GeneralDirectPosition(0.0,0.0);        
        DirectPosition pt2 = math.transform( pt1, null );
        assertNotNull( pt2 );
          
        double pts[] = new double[] {
                1187128,395268, 1187128,396027,
                1188245,396027, 1188245,395268,

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        double pts[] = new double[] {
                1187128,395268, 1187128,396027,
                1188245,396027, 1188245,395268,
                1187128,395268};
        double tst[] = new double[ pts.length ];                        
        math.transform( pts, 0, new double[ pts.length ], 0, pts.length/2 );
        for( int i=0; i<pts.length;i++)
            assertTrue( "pts["+i+"]", pts[i] != tst[i] );
    }
    /**
     * Taken from empty udig map calculation of scale.

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        CoordinateReferenceSystem target = CRS.decode(TARGET_CRS);
        MathTransform mt = CRS.findMathTransform(source, target, true);
        
        // Test MathTransform
        double[] p = new double[2];
        mt.transform(SRC_TEST_POINT, 0, p, 0, 1);
        assertEquals(p[0], DST_TEST_POINT[0], 1e-8);
        assertEquals(p[1], DST_TEST_POINT[1], 1e-8);
    }
    
    /**

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        CoordinateReferenceSystem target = CRS.decode("EPSG:4326");
        MathTransform mt = CRS.findMathTransform(source, target, true);
        
        // Test MathTransform
        double[] p = new double[2];
        mt.transform(SRC_TEST_POINT, 0, p, 0, 1);
        assertEquals(p[0], DST_TEST_POINT[0], 1e-8);
        assertEquals(p[1], DST_TEST_POINT[1], 1e-8);
    }
    
    /**

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        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);
    }


    public void testAuthorityCodes() throws Exception {
        Set authorityCodes = factory.getAuthorityCodes(CoordinateReferenceSystem.class);
        assertNotNull(authorityCodes);

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        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);
    }


    public void testAuthorityCodes() throws Exception {
        Set authorityCodes = factory.getAuthorityCodes(CoordinateReferenceSystem.class);
        assertNotNull(authorityCodes);

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        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);        
    }
    @Test
    public void testAuthorityCodes() throws Exception {
        Set authorityCodes = factory.getAuthorityCodes(CoordinateReferenceSystem.class);
        assertNotNull(authorityCodes);

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        double[][] points2 = new double[points.length][2];
        double[] tp1 = new double[2];
        double[] tp2= new double[2];
        for (double[] point : points) {
            t1.transform(point, 0, tp1, 0, 1);
            t2.transform(point, 0, tp2, 0, 1);
            assertEquals(tp1[0], tp2[0], EPS);
            assertEquals(tp1[1], tp2[1], EPS);
            // check inverse as well
            t1.inverse().transform(tp1, 0, tp1, 0, 1);
            t2.inverse().transform(tp2, 0, tp2, 0, 1);

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                    // 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
                    }
                } catch (Exception e) {
                    exceptions++;

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        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);
    }


    public void testAuthorityCodes() throws Exception {
        Set authorityCodes = factory.getAuthorityCodes(CoordinateReferenceSystem.class);
        assertNotNull(authorityCodes);

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