79 lines
2.6 KiB
Java
79 lines
2.6 KiB
Java
/* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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package netscape.plugin.composer.mapedit;
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import java.awt.*;
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public class Circle {
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Circle(int xx,int yy,int rr) {x = xx; y = yy; radius = rr;}
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Rectangle boundingBox() {
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// Rectangle centered at (x,y).
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Rectangle r = new Rectangle(x - radius,y - radius,2 * radius + 1,2 * radius + 1);
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return r;
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}
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/** Circle acts like a closed disk. I.e. boundary is included. */
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boolean containsPoint(int xx,int yy) {
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return dist(x,y,xx,yy) <= radius;
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}
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/** Standard Euclidean distance. */
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static double dist(Point p1,Point p2) {
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return dist(p1.x,p1.y,p2.x,p2.y);
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}
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void moveBy(int dx,int dy) {
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x += dx;
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y += dy;
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}
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static double dist(int x1,int y1,int x2,int y2) {
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int dx = x2 - x1;
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int dy = y2 - y1;
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return Math.sqrt(dx * dx + dy * dy);
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}
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// Center.
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int x;
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int y;
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int radius;
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}
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