Examples with GeometryCollectionImpl com.revolsys.geometry.model.impl.GeometryCollectionImpl used on opensource projects

Example 1 with GeometryCollectionImpl

use of com.revolsys.geometry.model.impl.GeometryCollectionImpl in project com.revolsys.open by revolsys.

the class GeometryFactory method geometryCollection.

/**
 * Does not flattern nested geometry collections.
 *
 * @param geometries
 * @return
 */
@SuppressWarnings("unchecked")
public <G extends Geometry> G geometryCollection(final Iterable<? extends Geometry> geometries) {
    if (geometries == null) {
        return (G) geometryCollection();
    } else {
        DataType dataType = null;
        boolean heterogeneous = false;
        final List<Geometry> geometryList = new ArrayList<>();
        if (geometries != null) {
            for (final Geometry geometry : geometries) {
                if (geometry != null) {
                    if (heterogeneous) {
                    } else {
                        final DataType geometryDataType = geometry.getDataType();
                        if (dataType == null) {
                            dataType = geometryDataType;
                        } else if (dataType != geometryDataType) {
                            heterogeneous = true;
                            dataType = null;
                        }
                    }
                    final Geometry copy = geometry.newGeometry(this);
                    geometryList.add(copy);
                }
            }
        }
        if (geometryList.size() == 0) {
            return (G) geometryCollection();
        } else if (geometryList.size() == 1) {
            return (G) geometryList.get(0);
        } else if (dataType == DataTypes.POINT) {
            return (G) punctual(geometryList);
        } else if (dataType == DataTypes.LINE_STRING) {
            return (G) lineal(geometryList);
        } else if (dataType == DataTypes.POLYGON) {
            return (G) polygonal(geometryList);
        } else {
            final Geometry[] geometryArray = new Geometry[geometryList.size()];
            geometryList.toArray(geometryArray);
            return (G) new GeometryCollectionImpl(this, geometryArray);
        }
    }
}