Examples with Point com.esri.core.geometry.Point used on opensource projects

Example 11 with Point

use of com.esri.core.geometry.Point in project presto by prestodb.

the class SphericalGeoFunctions method computeSphericalExcess.

private static double computeSphericalExcess(Polygon polygon, int start, int end) {
    // Our calculations rely on not processing the same point twice
    if (polygon.getPoint(end - 1).equals(polygon.getPoint(start))) {
        end = end - 1;
    }
    if (end - start < 3) {
        // A path with less than 3 distinct points is not valid for calculating an area
        throw new PrestoException(INVALID_FUNCTION_ARGUMENT, "Polygon is not valid: a loop contains less then 3 vertices.");
    }
    Point point = new Point();
    // Initialize the calculator with the last point
    polygon.getPoint(end - 1, point);
    SphericalExcessCalculator calculator = new SphericalExcessCalculator(point);
    for (int i = start; i < end; i++) {
        polygon.getPoint(i, point);
        calculator.add(point);
    }
    return calculator.computeSphericalExcess();
}

Example 12 with Point

use of com.esri.core.geometry.Point in project presto by prestodb.

the class SphericalGeoFunctions method stSphericalLength.

@SqlNullable
@Description("Returns the great-circle length in meters of a linestring or multi-linestring on Earth's surface")
@ScalarFunction("ST_Length")
@SqlType(DOUBLE)
public static Double stSphericalLength(@SqlType(SPHERICAL_GEOGRAPHY_TYPE_NAME) Slice input) {
    OGCGeometry geometry = EsriGeometrySerde.deserialize(input);
    if (geometry.isEmpty()) {
        return null;
    }
    validateSphericalType("ST_Length", geometry, EnumSet.of(LINE_STRING, MULTI_LINE_STRING));
    MultiPath lineString = (MultiPath) geometry.getEsriGeometry();
    double sum = 0;
    // sum up paths on (multi)linestring
    for (int path = 0; path < lineString.getPathCount(); path++) {
        if (lineString.getPathSize(path) < 2) {
            continue;
        }
        // sum up distances between adjacent points on this path
        int pathStart = lineString.getPathStart(path);
        Point prev = lineString.getPoint(pathStart);
        for (int i = pathStart + 1; i < lineString.getPathEnd(path); i++) {
            Point next = lineString.getPoint(i);
            sum += greatCircleDistance(prev.getY(), prev.getX(), next.getY(), next.getX());
            prev = next;
        }
    }
    return sum * 1000;
}

Example 13 with Point

use of com.esri.core.geometry.Point in project presto by prestodb.

the class BingTileFunctions method bingTilesAround.

@Description("Given a (longitude, latitude) point, returns the surrounding Bing tiles at the specified zoom level")
@ScalarFunction("bing_tiles_around")
@SqlType("array(" + BingTileType.NAME + ")")
public static Block bingTilesAround(@SqlType(StandardTypes.DOUBLE) double latitude, @SqlType(StandardTypes.DOUBLE) double longitude, @SqlType(StandardTypes.INTEGER) long zoomLevel) {
    checkLatitude(latitude, LATITUDE_OUT_OF_RANGE);
    checkLongitude(longitude, LONGITUDE_OUT_OF_RANGE);
    checkZoomLevel(zoomLevel);
    long mapSize = mapSize(toIntExact(zoomLevel));
    long maxTileIndex = (mapSize / TILE_PIXELS) - 1;
    int tileX = longitudeToTileX(longitude, mapSize);
    int tileY = latitudeToTileY(latitude, mapSize);
    BlockBuilder blockBuilder = BIGINT.createBlockBuilder(null, 9);
    for (int i = -1; i <= 1; i++) {
        for (int j = -1; j <= 1; j++) {
            int x = tileX + i;
            int y = tileY + j;
            if (x >= 0 && x <= maxTileIndex && y >= 0 && y <= maxTileIndex) {
                BIGINT.writeLong(blockBuilder, BingTile.fromCoordinates(x, y, toIntExact(zoomLevel)).encode());
            }
        }
    }
    return blockBuilder.build();
}

Example 14 with Point

use of com.esri.core.geometry.Point in project presto by prestodb.

the class EsriGeometrySerde method writePoint.

private static void writePoint(DynamicSliceOutput output, OGCGeometry geometry) {
    Geometry esriGeometry = geometry.getEsriGeometry();
    verify(esriGeometry instanceof Point, "geometry is expected to be an instance of Point");
    Point point = (Point) esriGeometry;
    verify(!point.hasAttribute(VertexDescription.Semantics.Z) && !point.hasAttribute(VertexDescription.Semantics.M) && !point.hasAttribute(VertexDescription.Semantics.ID), "Only 2D points with no ID nor M attribute are supported");
    output.appendByte(GeometrySerializationType.POINT.code());
    if (!point.isEmpty()) {
        output.appendDouble(point.getX());
        output.appendDouble(point.getY());
    } else {
        output.appendDouble(NaN);
        output.appendDouble(NaN);
    }
}

Example 15 with Point

use of com.esri.core.geometry.Point in project presto by prestodb.

the class EsriGeometrySerde method readPoint.

private static OGCPoint readPoint(BasicSliceInput input) {
    double x = input.readDouble();
    double y = input.readDouble();
    Point point;
    if (isNaN(x) || isNaN(y)) {
        point = new Point();
    } else {
        point = new Point(x, y);
    }
    return new OGCPoint(point, null);
}