/******************************************************************************* * Copyright (c) 2015 Voyager Search and MITRE * All rights reserved. This program and the accompanying materials * are made available under the terms of the Apache License, Version 2.0 which * accompanies this distribution and is available at * http://www.apache.org/licenses/LICENSE-2.0.txt ******************************************************************************/ package org.locationtech.spatial4j.io; import java.io.IOException; import java.io.Writer; import java.text.NumberFormat; import java.util.Locale; import org.locationtech.spatial4j.context.SpatialContext; import org.locationtech.spatial4j.context.SpatialContextFactory; import org.locationtech.spatial4j.shape.Circle; import org.locationtech.spatial4j.shape.Point; import org.locationtech.spatial4j.shape.Rectangle; import org.locationtech.spatial4j.shape.Shape; /** * Writes a shape in the old format. * <ul> * <li>Point: X Y * <br> 1.23 4.56 * </li> * <li>Rect: XMin YMin XMax YMax * <br> 1.23 4.56 7.87 4.56 * </li> * <li>{CIRCLE} '(' {POINT} {DISTANCE} ')' <br> * CIRCLE is "CIRCLE" or "Circle" (no other case), and POINT is "X Y" order pair of doubles, or * "Y,X" (lat,lon) pair of doubles, and DISTANCE is "d=RADIUS" or "distance=RADIUS" where RADIUS * is a double that is the distance radius in degrees. * </li> * </ul> */ @Deprecated public class LegacyShapeWriter implements ShapeWriter { final SpatialContext ctx; public LegacyShapeWriter(SpatialContext ctx, SpatialContextFactory factory) { this.ctx = ctx; } /** * Writes a shape to a String, in a format that can be read by * {@link LegacyShapeReader#readShapeOrNull(String, SpatialContext)} * @param shape Not null. * @return Not null. */ public static String writeShape(Shape shape) { return writeShape(shape, makeNumberFormat(6)); } /** Overloaded to provide a number format. */ public static String writeShape(Shape shape, NumberFormat nf) { if (shape instanceof Point) { Point point = (Point) shape; return nf.format(point.getX()) + " " + nf.format(point.getY()); } else if (shape instanceof Rectangle) { Rectangle rect = (Rectangle)shape; return nf.format(rect.getMinX()) + " " + nf.format(rect.getMinY()) + " " + nf.format(rect.getMaxX()) + " " + nf.format(rect.getMaxY()); } else if (shape instanceof Circle) { Circle c = (Circle) shape; return "Circle(" + nf.format(c.getCenter().getX()) + " " + nf.format(c.getCenter().getY()) + " " + "d=" + nf.format(c.getRadius()) + ")"; } return shape.toString(); } /** * A convenience method to create a suitable NumberFormat for writing numbers. */ public static NumberFormat makeNumberFormat(int fractionDigits) { NumberFormat nf = NumberFormat.getInstance(Locale.ROOT);//not thread-safe nf.setGroupingUsed(false); nf.setMaximumFractionDigits(fractionDigits); nf.setMinimumFractionDigits(0); return nf; } @Override public String getFormatName() { return ShapeIO.LEGACY; } @Override public void write(Writer output, Shape shape) throws IOException { output.append(writeShape(shape)); } @Override public String toString(Shape shape) { return writeShape(shape); } }