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

Package org.opengis.referencing.operation

Class org.opengis.referencing.operation.MathTransform

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

org.opengis.referencing.operation.MathTransform.inverse()
Creates the inverse transform of this object. The target of the inverse transform is the source of the original. The source of the inverse transform is the target of the original. Using the original transform followed by the inverse's transform will result in an identity map on the source coordinate space, when allowances for error are made. This method may fail if the transform is not one to one. However, all cartographic projections should succeed. @return The inverse transform. @throws NoninvertibleTransformException if the transform can't be inversed.

        final CoordinateOperation       operation = opFactory.createOperation(sourceCRS, targetCRS);
        final MathTransform             transform = operation.getMathTransform();
        final int                       dimension = transform.getSourceDimensions();
        assertEquals("Source dimension", 3, dimension);
        assertEquals("Target dimension", 3, transform.getTargetDimensions());
        assertSame("Inverse transform", transform, transform.inverse().inverse());
        assertInterfaced(transform);
        /*
         * Construct an array of 850 random points. The first 8 points
         * are initialized to know values. Other points are left random.
         */

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         * in longitude or latitude and 1 cm in height.
         */
        final double[] array1 = new double[array0.length];
        final double[] array2 = new double[array0.length];
        transform          .transform(array0, 0, array1, 0, array0.length/dimension);
        transform.inverse().transform(array1, 0, array2, 0, array1.length/dimension);
        assertPointsEqual("transform(Geographic --> Geocentric --> Geographic)", array0, array2,
                          new double[] {0.1/3600, 0.1/3600, 0.01});
        /*
         * Compare the distances between "special" points with expected distances.
         * This test the ellipsoid orthodromic distance computation as well.

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        for (int i=0; i<calculatedPoints.length; i++) {
            assertEquals(dstPoints[i], calculatedPoints[i], precision);
        }


        // Inverse transform test
        mt.inverse().transform(dstPoints, 0, calculatedPoints, 0, dstPoints.length/2);
        for (int i=0; i<calculatedPoints.length; i++) {
            assertEquals(srcPoints[i], calculatedPoints[i], precision);
        }
    }

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        assertEquals("false_easting",        0.0, param.parameter("false_easting"     ).doubleValue(), 1E-8);
        assertEquals("false_northing",       0.0, param.parameter("false_northing"    ).doubleValue(), 1E-8);


        final MathTransform transform = operation.getMathTransform();
        assertInterfaced(transform);
        assertTransformEquals2_2(transform.inverse(), 0, 0, 170, 50);
        assertTransformEquals2_2(transform, 170, 50, 0, 0);
    }


    /**
     * Tests a transformation that requires a datum shift with TOWGS84[0,0,0].

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            originalEnvelope.getMinimum(0)+originalEnvelope.getSpan(0)/2,
            originalEnvelope.getMaximum(1)
            );
        
        final MathTransform cornerWorldToGrid = PixelTranslation.translate(expectedTx,PixelInCell.CELL_CENTER,PixelInCell.CELL_CORNER);
        final GeneralGridEnvelope expectedGridEnvelope = new GeneralGridEnvelope(CRS.transform(cornerWorldToGrid.inverse(), newEnvelope),PixelInCell.CELL_CORNER,false);
        final StringBuilder envelopeBuilder= new StringBuilder();
        envelopeBuilder.append(newEnvelope.getMinimum(0)).append(",");
        envelopeBuilder.append(newEnvelope.getMinimum(1)).append(",");
        envelopeBuilder.append(newEnvelope.getMaximum(0)).append(",");
        envelopeBuilder.append(newEnvelope.getMaximum(1));

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                            ReprojectPage.this, "Target Geometry is not specified"));
                } else {
                    MathTransform mt = getTransform();
                    if (mt != null) {
                        try {
                            Geometry source = JTS.transform(target, mt.inverse());
                            sourceGeom.setModelObject(source);
                            at.addComponent(sourceGeom);
                        } catch (Exception e) {
                            error(e.getMessage());
                        }

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            originalEnvelope.getMinimum(0)+originalEnvelope.getSpan(0)/2,
            originalEnvelope.getMaximum(1)
            );
        
        final MathTransform cornerWorldToGrid = PixelTranslation.translate(expectedTx,PixelInCell.CELL_CENTER,PixelInCell.CELL_CORNER);
        final GeneralGridEnvelope expectedGridEnvelope = new GeneralGridEnvelope(CRS.transform(cornerWorldToGrid.inverse(), newEnvelope),PixelInCell.CELL_CORNER,false);
        final StringBuilder envelopeBuilder= new StringBuilder();
        envelopeBuilder.append(newEnvelope.getMinimum(0)).append(",");
        envelopeBuilder.append(newEnvelope.getMinimum(1)).append(",");
        envelopeBuilder.append(newEnvelope.getMaximum(0)).append(",");
        envelopeBuilder.append(newEnvelope.getMaximum(1));

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