Examples of org.apache.sis.referencing.operation.matrix.Matrix4

org.apache.sis.referencing.operation.matrix.Matrix4

A matrix of fixed {@value #SIZE}× {@value #SIZE} size, often used in datum shifts.The matrix members are:

 ┌                 ┐ │  {@linkplain #m00} {@linkplain #m01} {@linkplain #m02} {@linkplain #m03} ││  {@linkplain #m10} {@linkplain #m11} {@linkplain #m12} {@linkplain #m13} ││  {@linkplain #m20} {@linkplain #m21} {@linkplain #m22} {@linkplain #m23} ││  {@linkplain #m30} {@linkplain #m31} {@linkplain #m32} {@linkplain #m33} │└                 ┘

@author Martin Desruisseaux (IRD, Geomatys) @since 0.4 (derived from geotk-2.2) @version 0.4 @module @see Matrix1 @see Matrix2 @see Matrix3

     * and compares with our own matrix calculated using double arithmetic.
     */
    private static MatrixSIS getPositionVectorTransformation(final BursaWolfParameters p) {
        final double   S = 1 + p.dS / BursaWolfParameters.PPM;
        final double  RS = TO_RADIANS * S;
        final Matrix4 expected = new Matrix4(
                   S,  -p.rZ*RS,  +p.rY*RS,  p.tX,
            +p.rZ*RS,         S,  -p.rX*RS,  p.tY,
            -p.rY*RS,  +p.rX*RS,         S,  p.tZ,
                   0,         0,         0,  1);

        assertMatrixEquals("toWGS72", source, toWGS72.multiply(target), 0.01);
        /*
         * Tests the optimized path for translation-only parameters.
         * Matrices having only translation terms are much easier to predict.
         */
        assertMatrixEquals("Translation only", new Matrix4(
                1, 0, 0, -168,
                0, 1, 0,  -60,
                0, 0, 1,  320,
                0, 0, 0,    1), getPositionVectorTransformation(createNTF_to_WGS84()), 0);
    }

     * @see DefaultGeodeticDatum#getPositionVectorTransformation(GeodeticDatum, Extent)
     */
    public Matrix getPositionVectorTransformation(final Date time) {
        final DoubleDouble period = period(time);
        if (period == null && isTranslation()) {
            final Matrix4 matrix = new Matrix4();
            matrix.m03 = tX;
            matrix.m13 = tY;
            matrix.m23 = tZ;
            return matrix;
        }

Related Classes of org.apache.sis.referencing.operation.matrix.Matrix4

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