Examples with Envelope org.opengis.geometry.Envelope used on opensource projects

Example 1 with Envelope

use of org.opengis.geometry.Envelope in project sis by apache.

the class MatricesTest method testCreateTransformFromEnvelopes.

/**
 * Tests {@link Matrices#createTransform(Envelope, Envelope)}.
 * This method tests the example given in {@code Matrices.createTransform(…)} javadoc.
 */
@Test
public void testCreateTransformFromEnvelopes() {
    final Envelope srcEnvelope = new Envelope2D(null, -20, -40, 100, 200);
    final Envelope dstEnvelope = new Envelope2D(null, -10, -25, 300, 500);
    MatrixSIS matrix = Matrices.createTransform(srcEnvelope, dstEnvelope);
    assertTrue("isAffine", matrix.isAffine());
    assertFalse("isIdentity", matrix.isIdentity());
    assertEquals("numRow", 3, matrix.getNumRow());
    assertEquals("numCol", 3, matrix.getNumCol());
    assertEquals(Matrices.create(3, 3, new double[] { 3.0, 0, 50, 0, 2.5, 75, 0, 0, 1 }), matrix);
    /*
         * Test dropping a dimension.
         */
    final GeneralEnvelope expanded = new GeneralEnvelope(3);
    expanded.subEnvelope(0, 2).setEnvelope(srcEnvelope);
    expanded.setRange(2, 1000, 2000);
    matrix = Matrices.createTransform(expanded, dstEnvelope);
    assertEquals("numRow", 3, matrix.getNumRow());
    assertEquals("numCol", 4, matrix.getNumCol());
    assertEquals(Matrices.create(3, 4, new double[] { 3.0, 0, 0, 50, 0, 2.5, 0, 75, 0, 0, 0, 1 }), matrix);
    /*
         * Test adding a dimension with ordinate values set to zero.
         */
    expanded.subEnvelope(0, 2).setEnvelope(dstEnvelope);
    matrix = Matrices.createTransform(srcEnvelope, expanded);
    assertEquals("numRow", 4, matrix.getNumRow());
    assertEquals("numCol", 3, matrix.getNumCol());
    assertEquals(Matrices.create(4, 3, new double[] { 3.0, 0, 50, 0, 2.5, 75, 0, 0, 0, 0, 0, 1 }), matrix);
}

Example 2 with Envelope

use of org.opengis.geometry.Envelope in project sis by apache.

the class MatricesTest method testCreateTransformFromEnvelopesAndAxes.

/**
 * Tests {@link Matrices#createTransform(Envelope, AxisDirection[], Envelope, AxisDirection[])}.
 * This method tests the example given in {@code Matrices.createTransform(…)} javadoc.
 */
@Test
@DependsOnMethod({ "testCreateTransformFromEnvelopes", "testCreateTransformWithLessAxes" })
public void testCreateTransformFromEnvelopesAndAxes() {
    // swapped (y,-x)
    final Envelope srcEnvelope = new Envelope2D(null, -40, +20, 200, 100);
    final Envelope dstEnvelope = new Envelope2D(null, -10, -25, 300, 500);
    MatrixSIS matrix = Matrices.createTransform(srcEnvelope, new AxisDirection[] { NORTH, WEST }, dstEnvelope, new AxisDirection[] { EAST, NORTH });
    assertTrue("isAffine", matrix.isAffine());
    assertFalse("isIdentity", matrix.isIdentity());
    assertEquals("numRow", 3, matrix.getNumRow());
    assertEquals("numCol", 3, matrix.getNumCol());
    assertMatrixEquals("(N,E) → (E,N)", Matrices.create(3, 3, new double[] { 0, -3.0, 350, 2.5, 0, 75, 0, 0, 1 }), matrix, STRICT);
    /*
         * Test dropping a dimension.
         */
    final GeneralEnvelope expanded = new GeneralEnvelope(3);
    expanded.subEnvelope(0, 2).setEnvelope(srcEnvelope);
    expanded.setRange(2, 1000, 2000);
    matrix = Matrices.createTransform(expanded, new AxisDirection[] { NORTH, WEST, UP }, dstEnvelope, new AxisDirection[] { EAST, NORTH });
    assertEquals("numRow", 3, matrix.getNumRow());
    assertEquals("numCol", 4, matrix.getNumCol());
    assertMatrixEquals("(N,E,U) → (E,N)", Matrices.create(3, 4, new double[] { 0, -3.0, 0, 350, 2.5, 0, 0, 75, 0, 0, 0, 1 }), matrix, STRICT);
}

Example 3 with Envelope

use of org.opengis.geometry.Envelope in project sis by apache.

the class AbstractEnvelope method toSimpleEnvelopes.

/**
 * Returns this envelope as an array of simple (without wraparound) envelopes.
 * The length of the returned array depends on the number of dimensions where a
 * {@linkplain org.opengis.referencing.cs.RangeMeaning#WRAPAROUND wraparound} range is found.
 * Typically, wraparound occurs only in the range of longitude values, when the range crosses
 * the anti-meridian (a.k.a. date line). However this implementation will take in account any
 * axis having wraparound {@linkplain CoordinateSystemAxis#getRangeMeaning() range meaning}.
 *
 * <p>Special cases:</p>
 *
 * <ul>
 *   <li>If this envelope {@linkplain #isEmpty() is empty}, then this method returns an empty array.</li>
 *   <li>If this envelope does not have any wraparound behavior, then this method returns {@code this}
 *       in an array of length 1. This envelope is <strong>not</strong> cloned.</li>
 *   <li>If this envelope crosses the <cite>anti-meridian</cite> (a.k.a. <cite>date line</cite>)
 *       then this method represents this envelope as two separated simple envelopes.
 *   <li>While uncommon, the envelope could theoretically crosses the limit of other axis having
 *       wraparound range meaning. If wraparound occur along <var>n</var> axes, then this method
 *       represents this envelope as 2ⁿ separated simple envelopes.
 * </ul>
 *
 * @return a representation of this envelope as an array of non-empty envelope.
 *
 * @see Envelope2D#toRectangles()
 * @see GeneralEnvelope#simplify()
 *
 * @since 0.4
 */
@SuppressWarnings("ReturnOfCollectionOrArrayField")
public Envelope[] toSimpleEnvelopes() {
    // A bitmask of the dimensions having a "wrap around" behavior.
    long isWrapAround = 0;
    CoordinateReferenceSystem crs = null;
    final int dimension = getDimension();
    for (int i = 0; i != dimension; i++) {
        // Do not use getSpan(i).
        final double span = getUpper(i) - getLower(i);
        if (!(span > 0)) {
            // Use '!' for catching NaN.
            if (!isNegative(span)) {
                // Span is positive zero.
                return EMPTY;
            }
            if (crs == null) {
                crs = getCoordinateReferenceSystem();
            }
            if (!isWrapAround(crs, i)) {
                return EMPTY;
            }
            if (i >= Long.SIZE) {
                // a CRS is unusual enough for not being worth to make the distinction in the error message.
                throw new IllegalStateException(Errors.format(Errors.Keys.ExcessiveListSize_2, "axis", dimension));
            }
            isWrapAround |= (1L << i);
        }
    }
    /*
         * The number of simple envelopes is 2ⁿ where n is the number of wraparound found. In most
         * cases, isWrapAround == 0 so we have an array of length 1 containing only this envelope.
         */
    final int bitCount = Long.bitCount(isWrapAround);
    if (bitCount >= Integer.SIZE - 1) {
        // Should be very unusual, but let be paranoiac.
        throw new IllegalStateException(Errors.format(Errors.Keys.ExcessiveListSize_2, "wraparound", bitCount));
    }
    final Envelope[] envelopes = new Envelope[1 << bitCount];
    if (envelopes.length == 1) {
        envelopes[0] = this;
    } else {
        /*
             * Need to create at least 2 envelopes. Instantiate now all envelopes with ordinate values
             * initialized to a copy of this envelope. We will write directly in their internal arrays later.
             */
        double[] c = new double[dimension * 2];
        for (int i = 0; i < dimension; i++) {
            c[i] = getLower(i);
            c[i + dimension] = getUpper(i);
        }
        final double[][] ordinates = new double[envelopes.length][];
        for (int i = 0; i < envelopes.length; i++) {
            final GeneralEnvelope envelope = new GeneralEnvelope(i == 0 ? c : c.clone());
            envelope.crs = crs;
            envelopes[i] = envelope;
            ordinates[i] = envelope.ordinates;
        }
        /*
             * Assign the minimum and maximum ordinate values in the dimension where a wraparound has been found.
             * The 'for' loop below iterates only over the 'i' values for which the 'isWrapAround' bit is set to 1.
             */
        // For identifying whether we need to set the lower or the upper ordinate.
        int mask = 1;
        @SuppressWarnings("null") final CoordinateSystem // Should not be null at this point.
        cs = crs.getCoordinateSystem();
        for (int i; (i = Long.numberOfTrailingZeros(isWrapAround)) != Long.SIZE; isWrapAround &= ~(1L << i)) {
            final CoordinateSystemAxis axis = cs.getAxis(i);
            final double min = axis.getMinimumValue();
            final double max = axis.getMaximumValue();
            for (int j = 0; j < ordinates.length; j++) {
                c = ordinates[j];
                if ((j & mask) == 0) {
                    c[i + dimension] = max;
                } else {
                    c[i] = min;
                }
            }
            mask <<= 1;
        }
    }
    return envelopes;
}

Example 4 with Envelope

use of org.opengis.geometry.Envelope in project sis by apache.

the class LocationViewer method addLocation.

/**
 * Adds the location identified by the given label
 *
 * @param  label     a label that identify the location to add.
 * @param  location  the location to add to the list of locations shown by this widget.
 * @throws FactoryException if a transformation to the display CRS can not be obtained.
 * @throws TransformException if an error occurred while transforming an envelope.
 */
public void addLocation(final String label, final AbstractLocation location) throws FactoryException, TransformException {
    final Envelope envelope = location.getEnvelope();
    final MathTransform2D tr = (MathTransform2D) CRS.findOperation(envelope.getCoordinateReferenceSystem(), displayCRS, null).getMathTransform();
    final Shape shape = tr.createTransformedShape(new IntervalRectangle(envelope));
    if (locations.putIfAbsent(label, shape) != null) {
        throw new IllegalArgumentException("A location is already defined for " + label);
    }
    final Rectangle2D b = shape.getBounds2D();
    if (bounds == null) {
        bounds = b;
    } else {
        bounds.add(b);
    }
}

Example 5 with Envelope

use of org.opengis.geometry.Envelope in project sis by apache.

the class AbstractLocation method getPosition.

/**
 * Returns coordinates of a representative point for the location instance.
 * This is typically (but not necessarily) the centroid of the location instance.
 *
 * <p>The default implementation returns the {@linkplain #getEnvelope()} median position.</p>
 *
 * @return coordinates of a representative point for the location instance, or {@code null} if none.
 */
public Position getPosition() {
    final Envelope envelope = getEnvelope();
    if (envelope == null) {
        return null;
    }
    final int dimension = envelope.getDimension();
    final GeneralDirectPosition pos = new GeneralDirectPosition(dimension);
    pos.setCoordinateReferenceSystem(envelope.getCoordinateReferenceSystem());
    for (int i = 0; i < dimension; i++) {
        pos.setOrdinate(i, envelope.getMedian(i));
    }
    return pos;
}