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PlantUML is a component that allows to quickly write diagrams from text.
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// THIS FILE HAS BEEN GENERATED BY A PREPROCESSOR.
/* +=======================================================================
 * |
 * |      PlantUML : a free UML diagram generator
 * |
 * +=======================================================================
 *
 * (C) Copyright 2009-2024, Arnaud Roques
 *
 * Project Info:  https://plantuml.com
 *
 * If you like this project or if you find it useful, you can support us at:
 *
 * https://plantuml.com/patreon (only 1$ per month!)
 * https://plantuml.com/liberapay (only 1€ per month!)
 * https://plantuml.com/paypal
 *
 *
 * PlantUML is free software; you can redistribute it and/or modify it
 * under the terms of the Apache Software License.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * PlantUML can occasionally display sponsored or advertising messages. Those
 * messages are usually generated on welcome or error images and never on
 * functional diagrams.
 * See https://plantuml.com/professional if you want to remove them
 *
 * Images (whatever their format : PNG, SVG, EPS...) generated by running PlantUML
 * are owned by the author of their corresponding sources code (that is, their
 * textual description in PlantUML language). Those images are not covered by
 * this APACHE license.
 *
 * The generated images can then be used without any reference to the APACHE license.
 * It is not even necessary to stipulate that they have been generated with PlantUML,
 * although this will be appreciated by the PlantUML team.
 *
 * There is an exception : if the textual description in PlantUML language is also covered
 * by any license, then the generated images are logically covered
 * by the very same license.
 *
 * This is the IGY distribution (Install GraphViz by Yourself).
 * You have to install GraphViz and to setup the GRAPHVIZ_DOT environment variable
 * (see https://plantuml.com/graphviz-dot )
 *
 * Icons provided by OpenIconic :  https://useiconic.com/open
 * Archimate sprites provided by Archi :  http://www.archimatetool.com
 * Stdlib AWS provided by https://github.com/milo-minderbinder/AWS-PlantUML
 * Stdlib Icons provided https://github.com/tupadr3/plantuml-icon-font-sprites
 * ASCIIMathML (c) Peter Jipsen http://www.chapman.edu/~jipsen
 * ASCIIMathML (c) David Lippman http://www.pierce.ctc.edu/dlippman
 * CafeUndZopfli ported by Eugene Klyuchnikov https://github.com/eustas/CafeUndZopfli
 * Brotli (c) by the Brotli Authors https://github.com/google/brotli
 * Themes (c) by Brett Schwarz https://github.com/bschwarz/puml-themes
 * Twemoji (c) by Twitter at https://twemoji.twitter.com/
 *
 */
package net.sourceforge.plantuml.golem;

public class Position {

	private final int xmin;
	private final int ymin;
	private final int xmax;
	private final int ymax;

	public Position(int xmin, int ymin, int xmax, int ymax) {
		this.xmin = xmin;
		this.ymin = ymin;
		this.xmax = xmax;
		this.ymax = ymax;
	}

	@Override
	public boolean equals(Object o) {
		final Position other = (Position) o;
		return this.xmin == other.xmin && this.xmax == other.xmax && this.ymin == other.ymin && this.ymax == other.ymax;
	}

	@Override
	public int hashCode() {
		return xmin + (ymin << 8) + (xmax << 16) + (ymax << 24);
	}

	@Override
	public String toString() {
		return "(" + xmin + "," + ymin + ")-(" + xmax + "," + ymax + ")";
	}

	public Position move(TileGeometry position, int sizeMove) {
		if (position == null || position == TileGeometry.CENTER) {
			throw new IllegalArgumentException();
		}
		switch (position) {
		case NORTH:
			return new Position(xmin, ymin - sizeMove, xmax, ymax - sizeMove);
		case SOUTH:
			return new Position(xmin, ymin + sizeMove, xmax, ymax + sizeMove);
		case WEST:
			return new Position(xmin - sizeMove, ymin, xmax - sizeMove, ymax);
		case EAST:
			return new Position(xmin + sizeMove, ymin, xmax + sizeMove, ymax);
		default:
			throw new IllegalStateException();
		}
	}

	public int getXmin() {
		return xmin;
	}

	public int getXmax() {
		return xmax;
	}

	public int getYmin() {
		return ymin;
	}

	public int getYmax() {
		return ymax;
	}

	public int getCenterX() {
		if ((xmin + xmax + 1) % 2 != 0) {
			throw new IllegalStateException();
		}
		return (xmin + xmax + 1) / 2;
	}

	public int getCenterY() {
		if ((ymin + ymax + 1) % 2 != 0) {
			throw new IllegalStateException();
		}
		return (ymin + ymax + 1) / 2;
	}
}