Java Code Examples for mil.nga.sf.LineString

/**
 * Convert a {@link LineString} to a {@link PolylineOptions}
 *
 * @param lineString line string
 * @return polyline options
 */
public PolylineOptions toPolyline(LineString lineString) {

    PolylineOptions polylineOptions = new PolylineOptions();
    Double z = null;

    // Try to simplify the number of points in the line string
    List<Point> points = simplifyPoints(lineString.getPoints());

    for (Point point : points) {
        LatLng latLng = toLatLng(point);
        polylineOptions.add(latLng);
        if (point.hasZ()) {
            z = (z == null) ? point.getZ() : Math.max(z, point.getZ());
        }
    }

    if (lineString.hasZ() && z != null) {
        polylineOptions.zIndex(z.floatValue());
    }

    return polylineOptions;
}
 

/**
 * Create a random line string
 *
 * @param hasZ
 * @param hasM
 * @param ring
 * @return
 */
public static LineString createLineString(boolean hasZ, boolean hasM,
                                          boolean ring) {

    LineString lineString = new LineString(hasZ, hasM);

    int numPoints = 2 + ((int) (Math.random() * 9));

    for (int i = 0; i < numPoints; i++) {
        lineString.addPoint(createPoint(hasZ, hasM));
    }

    if (ring) {
        lineString.addPoint(lineString.getPoints().get(0));
    }

    return lineString;
}
 

/**
 * Compare Polygon with Map Polygon
 *
    * @param converter
 * @param polygon
 * @param polygon2
 */
private static void comparePolygonAndMapPolygon(GoogleMapShapeConverter converter,
           Polygon polygon,
		PolygonOptions polygon2) {
	List<LineString> rings = polygon.getRings();
	List<LatLng> points = polygon2.getPoints();
	List<List<LatLng>> holes = polygon2.getHoles();

	TestCase.assertEquals(polygon.numRings(), 1 + holes.size());

	LineString polygonRing = rings.get(0);
	compareLineStringAndLatLngs(converter, polygonRing, points);

	for (int i = 1; i < rings.size(); i++) {
		LineString ring = rings.get(i);
		List<LatLng> hole = holes.get(i - 1);
		compareLineStringAndLatLngs(converter, ring, hole);
	}
}
 

/**
 * Test the MultiLineString conversion
 * 
 * @param converter
 * @param multiLineString
 */
private static void convertMultiLineString(
		GoogleMapShapeConverter converter, MultiLineString multiLineString) {

	MultiPolylineOptions polylines = converter.toPolylines(multiLineString);
	TestCase.assertNotNull(polylines);
	TestCase.assertFalse(polylines.getPolylineOptions().isEmpty());

	List<LineString> lineStrings = multiLineString.getLineStrings();
	compareLineStringsAndPolylines(converter, lineStrings,
			polylines.getPolylineOptions());

	MultiLineString multiLineString2 = converter
			.toMultiLineStringFromOptions(polylines);
	compareLineStrings(lineStrings, multiLineString2.getLineStrings());
}
 

/**
 * Test the CompoundCurve conversion
 * 
 * @param converter
 * @param compoundCurve
 */
private static void convertCompoundCurve(GoogleMapShapeConverter converter,
		CompoundCurve compoundCurve) {

	MultiPolylineOptions polylines = converter.toPolylines(compoundCurve);
	TestCase.assertNotNull(polylines);
	TestCase.assertFalse(polylines.getPolylineOptions().isEmpty());

	List<LineString> lineStrings = compoundCurve.getLineStrings();
	compareLineStringsAndPolylines(converter, lineStrings,
			polylines.getPolylineOptions());

	CompoundCurve compoundCurve2 = converter
			.toCompoundCurveWithOptions(polylines);
	compareLineStrings(lineStrings, compoundCurve2.getLineStrings());
}
 

/**
 * Add the linestring to the path
 *
 * @param simplifyTolerance simplify tolerance in meters
 * @param boundingBox       bounding box
 * @param transform         projection transform
 * @param path              path
 * @param lineString        line string
 */
private void addLineString(double simplifyTolerance, BoundingBox boundingBox, ProjectionTransform transform, Path path, LineString lineString) {

    List<Point> points = lineString.getPoints();

    if (points.size() >= 2) {

        // Try to simplify the number of points in the LineString
        points = simplifyPoints(simplifyTolerance, points);

        for (int i = 0; i < points.size(); i++) {
            Point point = points.get(i);
            Point webMercatorPoint = transform.transform(point);
            float x = TileBoundingBoxUtils.getXPixel(tileWidth, boundingBox,
                    webMercatorPoint.getX());
            float y = TileBoundingBoxUtils.getYPixel(tileHeight, boundingBox,
                    webMercatorPoint.getY());
            if (i == 0) {
                path.moveTo(x, y);
            } else {
                path.lineTo(x, y);
            }
        }
    }
}
 

/**
 * Add the polygon on the canvas
 *
 * @param simplifyTolerance simplify tolerance in meters
 * @param boundingBox       bounding box
 * @param transform         projection transform
 * @param path              path
 * @param polygon           polygon
 */
private void addPolygon(double simplifyTolerance, BoundingBox boundingBox, ProjectionTransform transform, Path path, Polygon polygon) {
    List<LineString> rings = polygon.getRings();
    if (!rings.isEmpty()) {

        // Add the polygon points
        LineString polygonLineString = rings.get(0);
        List<Point> polygonPoints = polygonLineString.getPoints();
        if (polygonPoints.size() >= 2) {
            addRing(simplifyTolerance, boundingBox, transform, path, polygonPoints);

            // Add the holes
            for (int i = 1; i < rings.size(); i++) {
                LineString holeLineString = rings.get(i);
                List<Point> holePoints = holeLineString.getPoints();
                if (holePoints.size() >= 2) {
                    addRing(simplifyTolerance, boundingBox, transform, path, holePoints);
                }
            }
        }
    }
}
 

private static Geometry createGeometry() {

        Polygon polygon = new Polygon();
        LineString ring = new LineString();
        ring.addPoint(new Point(-104.802246, 39.720343));
        ring.addPoint(new Point(-104.802246, 39.719753));
        ring.addPoint(new Point(-104.802183, 39.719754));
        ring.addPoint(new Point(-104.802184, 39.719719));
        ring.addPoint(new Point(-104.802138, 39.719694));
        ring.addPoint(new Point(-104.802097, 39.719691));
        ring.addPoint(new Point(-104.802096, 39.719648));
        ring.addPoint(new Point(-104.801646, 39.719648));
        ring.addPoint(new Point(-104.801644, 39.719722));
        ring.addPoint(new Point(-104.801550, 39.719723));
        ring.addPoint(new Point(-104.801549, 39.720207));
        ring.addPoint(new Point(-104.801648, 39.720207));
        ring.addPoint(new Point(-104.801648, 39.720341));
        ring.addPoint(new Point(-104.802246, 39.720343));
        polygon.addRing(ring);

        return polygon;
    }
 

/**
 * Create a random line string
 *
 * @param hasZ
 * @param hasM
 * @param ring
 * @return
 */
public static LineString createLineString(boolean hasZ, boolean hasM,
                                          boolean ring) {

    LineString lineString = new LineString(hasZ, hasM);

    int numPoints = 2 + ((int) (Math.random() * 9));

    for (int i = 0; i < numPoints; i++) {
        lineString.addPoint(createPoint(hasZ, hasM));
    }

    if (ring) {
        lineString.addPoint(lineString.getPoints().get(0));
    }

    return lineString;
}
 

public static long insertPolygon(FeatureDao featureDao, double[][]... points) {
    FeatureRow featureRow = featureDao.newRow();
    GeoPackageGeometryData geomData = new GeoPackageGeometryData(
            ProjectionConstants.EPSG_WORLD_GEODETIC_SYSTEM);
    Polygon polygon = new Polygon(false, false);
    for (double[][] ring : points) {
        LineString lineString = getLineString(ring);
        polygon.addRing(lineString);
    }
    geomData.setGeometry(polygon);
    featureRow.setGeometry(geomData);
    return featureDao.insert(featureRow);
}
 

/**
 * Get the area of the polygon
 *
 * @param simplifyTolerance
 *            simplify tolerance in meters
 * @param boundingBox
 * @param transform
 * @param lineString
 */
private Area getArea(double simplifyTolerance, BoundingBox boundingBox,
		ProjectionTransform transform, Polygon polygon) {

	Area area = null;

	for (LineString ring : polygon.getRings()) {

		Path2D path = getPath(simplifyTolerance, boundingBox, transform,
				ring);
		Area ringArea = new Area(path);

		if (area == null) {
			area = ringArea;
		} else {
			area.subtract(ringArea);
		}

	}

	return area;
}
 

private static Geometry createGeometry() {

		Polygon polygon = new Polygon();
		LineString ring = new LineString();
		ring.addPoint(new Point(-104.802246, 39.720343));
		ring.addPoint(new Point(-104.802246, 39.719753));
		ring.addPoint(new Point(-104.802183, 39.719754));
		ring.addPoint(new Point(-104.802184, 39.719719));
		ring.addPoint(new Point(-104.802138, 39.719694));
		ring.addPoint(new Point(-104.802097, 39.719691));
		ring.addPoint(new Point(-104.802096, 39.719648));
		ring.addPoint(new Point(-104.801646, 39.719648));
		ring.addPoint(new Point(-104.801644, 39.719722));
		ring.addPoint(new Point(-104.801550, 39.719723));
		ring.addPoint(new Point(-104.801549, 39.720207));
		ring.addPoint(new Point(-104.801648, 39.720207));
		ring.addPoint(new Point(-104.801648, 39.720341));
		ring.addPoint(new Point(-104.802246, 39.720343));
		polygon.addRing(ring);

		return polygon;
	}
 

/**
 * Create a random line string
 * 
 * @param hasZ
 * @param hasM
 * @param ring
 * @return line string
 */
public static LineString createLineString(boolean hasZ, boolean hasM,
		boolean ring) {

	LineString lineString = new LineString(hasZ, hasM);

	int numPoints = 2 + ((int) (Math.random() * 9));

	for (int i = 0; i < numPoints; i++) {
		lineString.addPoint(createPoint(hasZ, hasM));
	}

	if (ring) {
		lineString.addPoint(lineString.getPoints().get(0));
	}

	return lineString;
}
 

/**
 * Convert a list of {@link LatLng} to a {@link LineString}
 *
 * @param lineString line string
 * @param latLngs    lat lngs
 */
public void populateLineString(LineString lineString, List<LatLng> latLngs) {

    for (LatLng latLng : latLngs) {
        Point point = toPoint(latLng, lineString.hasZ(), lineString.hasM());
        lineString.addPoint(point);
    }
}
 

/**
 * Convert a {@link MultiLineString} to a {@link MultiPolylineOptions}
 *
 * @param multiLineString multi line string
 * @return multi polyline options
 */
public MultiPolylineOptions toPolylines(MultiLineString multiLineString) {

    MultiPolylineOptions polylines = new MultiPolylineOptions();

    for (LineString lineString : multiLineString.getLineStrings()) {
        PolylineOptions polyline = toPolyline(lineString);
        polylines.add(polyline);
    }

    return polylines;
}
 

/**
 * Convert a list of {@link Polyline} to a {@link MultiLineString}
 *
 * @param polylineList polyline list
 * @param hasZ         has z flag
 * @param hasM         has m flag
 * @return multi line string
 */
public MultiLineString toMultiLineString(List<Polyline> polylineList,
                                         boolean hasZ, boolean hasM) {

    MultiLineString multiLineString = new MultiLineString(hasZ, hasM);

    for (Polyline polyline : polylineList) {
        LineString lineString = toLineString(polyline);
        multiLineString.addLineString(lineString);
    }

    return multiLineString;
}
 

/**
 * Convert a list of List<LatLng> to a {@link MultiLineString}
 *
 * @param polylineList polyline list
 * @param hasZ         has z flag
 * @param hasM         has m flag
 * @return multi line string
 */
public MultiLineString toMultiLineStringFromList(
        List<List<LatLng>> polylineList, boolean hasZ, boolean hasM) {

    MultiLineString multiLineString = new MultiLineString(hasZ, hasM);

    for (List<LatLng> polyline : polylineList) {
        LineString lineString = toLineString(polyline);
        multiLineString.addLineString(lineString);
    }

    return multiLineString;
}
 

/**
 * Convert a list of List<LatLng> to a {@link CompoundCurve}
 *
 * @param polylineList polyline list
 * @param hasZ         has z flag
 * @param hasM         has m flag
 * @return compound curve
 */
public CompoundCurve toCompoundCurveFromList(
        List<List<LatLng>> polylineList, boolean hasZ, boolean hasM) {

    CompoundCurve compoundCurve = new CompoundCurve(hasZ, hasM);

    for (List<LatLng> polyline : polylineList) {
        LineString lineString = toLineString(polyline);
        compoundCurve.addLineString(lineString);
    }

    return compoundCurve;
}
 

/**
 * Convert a {@link MultiPolylineOptions} to a {@link MultiLineString}
 *
 * @param multiPolylineOptions multi polyline options
 * @param hasZ                 has z flag
 * @param hasM                 has m flag
 * @return multi line string
 */
public MultiLineString toMultiLineStringFromOptions(
        MultiPolylineOptions multiPolylineOptions, boolean hasZ,
        boolean hasM) {

    MultiLineString multiLineString = new MultiLineString(hasZ, hasM);

    for (PolylineOptions polyline : multiPolylineOptions
            .getPolylineOptions()) {
        LineString lineString = toLineString(polyline);
        multiLineString.addLineString(lineString);
    }

    return multiLineString;
}
 

/**
 * Convert a {@link MultiPolylineOptions} to a {@link CompoundCurve}
 *
 * @param multiPolylineOptions multi polyline options
 * @param hasZ                 has z flag
 * @param hasM                 has m flag
 * @return compound curve
 */
public CompoundCurve toCompoundCurveFromOptions(
        MultiPolylineOptions multiPolylineOptions, boolean hasZ,
        boolean hasM) {

    CompoundCurve compoundCurve = new CompoundCurve(hasZ, hasM);

    for (PolylineOptions polyline : multiPolylineOptions
            .getPolylineOptions()) {
        LineString lineString = toLineString(polyline);
        compoundCurve.addLineString(lineString);
    }

    return compoundCurve;
}
 

/**
 * Convert a {@link CompoundCurve} to a {@link MultiPolylineOptions}
 *
 * @param compoundCurve compound curve
 * @return multi polyline options
 */
public MultiPolylineOptions toPolylines(CompoundCurve compoundCurve) {

    MultiPolylineOptions polylines = new MultiPolylineOptions();

    for (LineString lineString : compoundCurve.getLineStrings()) {
        PolylineOptions polyline = toPolyline(lineString);
        polylines.add(polyline);
    }

    return polylines;
}
 

/**
 * Convert a list of {@link Polyline} to a {@link CompoundCurve}
 *
 * @param polylineList polyline list
 * @param hasZ         has z flag
 * @param hasM         has m flag
 * @return compound curve
 */
public CompoundCurve toCompoundCurve(List<Polyline> polylineList,
                                     boolean hasZ, boolean hasM) {

    CompoundCurve compoundCurve = new CompoundCurve(hasZ, hasM);

    for (Polyline polyline : polylineList) {
        LineString lineString = toLineString(polyline);
        compoundCurve.addLineString(lineString);
    }

    return compoundCurve;
}
 

/**
 * Convert a {@link MultiPolylineOptions} to a {@link CompoundCurve}
 *
 * @param multiPolylineOptions multi polyline options
 * @param hasZ                 has z flag
 * @param hasM                 has m flag
 * @return compound curve
 */
public CompoundCurve toCompoundCurveWithOptions(
        MultiPolylineOptions multiPolylineOptions, boolean hasZ,
        boolean hasM) {

    CompoundCurve compoundCurve = new CompoundCurve(hasZ, hasM);

    for (PolylineOptions polyline : multiPolylineOptions
            .getPolylineOptions()) {
        LineString lineString = toLineString(polyline);
        compoundCurve.addLineString(lineString);
    }

    return compoundCurve;
}
 

/**
 * Test the LineString conversion
 * 
 * @param converter
 * @param lineString
 */
private static void convertLineString(GoogleMapShapeConverter converter,
		LineString lineString) {

	PolylineOptions polyline = converter.toPolyline(lineString);
	TestCase.assertNotNull(polyline);

	compareLineStringAndPolyline(converter, lineString, polyline);

	LineString lineString2 = converter.toLineString(polyline);
	compareLineStrings(lineString, lineString2);
}
 

/**
 * Compare two Polygons
 * 
 * @param polygon
 * @param polygon2
 */
private static void comparePolygons(Polygon polygon, Polygon polygon2) {
	List<LineString> rings = polygon.getRings();
	List<LineString> rings2 = polygon2.getRings();

	TestCase.assertEquals(polygon.numRings(), polygon2.numRings());

	for (int i = 0; i < polygon.numRings(); i++) {
		compareLineStrings(rings.get(i), rings2.get(i));
	}
}
 

/**
 * Compare list of line strings with list of polylines
 *
    * @param converter
 * @param lineStrings
 * @param polylines
 */
private static void compareLineStringsAndPolylines(
           GoogleMapShapeConverter converter,
		List<LineString> lineStrings, List<PolylineOptions> polylines) {

	TestCase.assertEquals(lineStrings.size(), polylines.size());
	for (int i = 0; i < lineStrings.size(); i++) {
		compareLineStringAndPolyline(converter, lineStrings.get(i), polylines.get(i));
	}

}
 

/**
 * Compare two lists of line strings
 * 
 * @param lineStrings
 * @param lineStrings2
 */
private static void compareLineStrings(List<LineString> lineStrings,
		List<LineString> lineStrings2) {

	TestCase.assertEquals(lineStrings.size(), lineStrings2.size());
	for (int i = 0; i < lineStrings.size(); i++) {
		compareLineStrings(lineStrings.get(i), lineStrings2.get(i));
	}

}
 

/**
 * Validate Line String
 *
 * @param topGeometry
 * @param lineString
 */
private static void validateLineString(Geometry topGeometry,
                                       LineString lineString) {

    TestCase.assertEquals(GeometryType.LINESTRING,
            lineString.getGeometryType());

    validateZAndM(topGeometry, lineString);

    for (Point point : lineString.getPoints()) {
        validatePoint(topGeometry, point);
    }

}
 

/**
 * Validate Multi Line String
 *
 * @param topGeometry
 * @param multiLineString
 */
private static void validateMultiLineString(Geometry topGeometry,
                                            MultiLineString multiLineString) {

    TestCase.assertEquals(GeometryType.MULTILINESTRING,
            multiLineString.getGeometryType());

    validateZAndM(topGeometry, multiLineString);

    for (LineString lineString : multiLineString.getLineStrings()) {
        validateLineString(topGeometry, lineString);
    }

}
 

/**
 * Compare the two line strings for equality
 *
 * @param expected
 * @param actual
 * @parma delta
 */
private static void compareLineString(LineString expected,
                                      LineString actual, double delta) {

    compareBaseGeometryAttributes(expected, actual);
    TestCase.assertEquals(expected.numPoints(), actual.numPoints());
    for (int i = 0; i < expected.numPoints(); i++) {
        comparePoint(expected.getPoints().get(i),
                actual.getPoints().get(i), delta);
    }
}