Examples with OGCMultiPolygon com.esri.core.geometry.ogc.OGCMultiPolygon used on opensource projects

Example 1 with OGCMultiPolygon

use of com.esri.core.geometry.ogc.OGCMultiPolygon in project hetu-core by openlookeng.

the class GeoFunctions method stCentroid.

@Description("Returns the Point value that is the mathematical centroid of a Geometry")
@ScalarFunction("ST_Centroid")
@SqlType(GEOMETRY_TYPE_NAME)
public static Slice stCentroid(@SqlType(GEOMETRY_TYPE_NAME) Slice input) {
    OGCGeometry geometry = deserialize(input);
    validateType("ST_Centroid", geometry, EnumSet.of(POINT, MULTI_POINT, LINE_STRING, MULTI_LINE_STRING, POLYGON, MULTI_POLYGON));
    GeometryType geometryType = GeometryType.getForEsriGeometryType(geometry.geometryType());
    if (geometryType == GeometryType.POINT) {
        return input;
    }
    int pointCount = ((MultiVertexGeometry) geometry.getEsriGeometry()).getPointCount();
    if (pointCount == 0) {
        return serialize(createFromEsriGeometry(new Point(), geometry.getEsriSpatialReference()));
    }
    Point centroid;
    switch(geometryType) {
        case MULTI_POINT:
            centroid = computePointsCentroid((MultiVertexGeometry) geometry.getEsriGeometry());
            break;
        case LINE_STRING:
        case MULTI_LINE_STRING:
            centroid = computeLineCentroid((Polyline) geometry.getEsriGeometry());
            break;
        case POLYGON:
            centroid = computePolygonCentroid((Polygon) geometry.getEsriGeometry());
            break;
        case MULTI_POLYGON:
            centroid = computeMultiPolygonCentroid((OGCMultiPolygon) geometry);
            break;
        default:
            throw new PrestoException(INVALID_FUNCTION_ARGUMENT, "Unexpected geometry type: " + geometryType);
    }
    return serialize(createFromEsriGeometry(centroid, geometry.getEsriSpatialReference()));
}

Example 2 with OGCMultiPolygon

use of com.esri.core.geometry.ogc.OGCMultiPolygon in project hetu-core by openlookeng.

the class GeoFunctions method computeMultiPolygonCentroid.

// MultiPolygon centroid is weighted mean of each polygon, weight in terms of polygon area
private static Point computeMultiPolygonCentroid(OGCMultiPolygon multiPolygon) {
    double xSum = 0;
    double ySum = 0;
    double weightSum = 0;
    for (int i = 0; i < multiPolygon.numGeometries(); i++) {
        Point centroid = computePolygonCentroid((Polygon) multiPolygon.geometryN(i).getEsriGeometry());
        Polygon polygon = (Polygon) multiPolygon.geometryN(i).getEsriGeometry();
        double weight = polygon.calculateArea2D();
        weightSum += weight;
        xSum += centroid.getX() * weight;
        ySum += centroid.getY() * weight;
    }
    return new Point(xSum / weightSum, ySum / weightSum);
}

Example 3 with OGCMultiPolygon

use of com.esri.core.geometry.ogc.OGCMultiPolygon in project trino by trinodb.

the class GeoFunctions method computeMultiPolygonCentroid.

// MultiPolygon centroid is weighted mean of each polygon, weight in terms of polygon area
private static Point computeMultiPolygonCentroid(OGCMultiPolygon multiPolygon) {
    double xSum = 0;
    double ySum = 0;
    double weightSum = 0;
    for (int i = 0; i < multiPolygon.numGeometries(); i++) {
        Point centroid = computePolygonCentroid((Polygon) multiPolygon.geometryN(i).getEsriGeometry());
        Polygon polygon = (Polygon) multiPolygon.geometryN(i).getEsriGeometry();
        double weight = polygon.calculateArea2D();
        weightSum += weight;
        xSum += centroid.getX() * weight;
        ySum += centroid.getY() * weight;
    }
    return new Point(xSum / weightSum, ySum / weightSum);
}

Example 4 with OGCMultiPolygon

use of com.esri.core.geometry.ogc.OGCMultiPolygon in project trino by trinodb.

the class GeoFunctions method stCentroid.

@Description("Returns the Point value that is the mathematical centroid of a Geometry")
@ScalarFunction("ST_Centroid")
@SqlType(GEOMETRY_TYPE_NAME)
public static Slice stCentroid(@SqlType(GEOMETRY_TYPE_NAME) Slice input) {
    OGCGeometry geometry = deserialize(input);
    validateType("ST_Centroid", geometry, EnumSet.of(POINT, MULTI_POINT, LINE_STRING, MULTI_LINE_STRING, POLYGON, MULTI_POLYGON));
    GeometryType geometryType = GeometryType.getForEsriGeometryType(geometry.geometryType());
    if (geometryType == GeometryType.POINT) {
        return input;
    }
    int pointCount = ((MultiVertexGeometry) geometry.getEsriGeometry()).getPointCount();
    if (pointCount == 0) {
        return serialize(createFromEsriGeometry(new Point(), geometry.getEsriSpatialReference()));
    }
    Point centroid;
    switch(geometryType) {
        case MULTI_POINT:
            centroid = computePointsCentroid((MultiVertexGeometry) geometry.getEsriGeometry());
            break;
        case LINE_STRING:
        case MULTI_LINE_STRING:
            centroid = computeLineCentroid((Polyline) geometry.getEsriGeometry());
            break;
        case POLYGON:
            centroid = computePolygonCentroid((Polygon) geometry.getEsriGeometry());
            break;
        case MULTI_POLYGON:
            centroid = computeMultiPolygonCentroid((OGCMultiPolygon) geometry);
            break;
        default:
            throw new TrinoException(INVALID_FUNCTION_ARGUMENT, "Unexpected geometry type: " + geometryType);
    }
    return serialize(createFromEsriGeometry(centroid, geometry.getEsriSpatialReference()));
}