643 lines
13 KiB
Java
643 lines
13 KiB
Java
//******************************************************************************
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//
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// File: Oval.java
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// Package: edu.rit.draw.item
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// Unit: Class edu.rit.draw.item.Oval
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//
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// This Java source file is copyright (C) 2013 by Alan Kaminsky. All rights
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// reserved. For further information, contact the author, Alan Kaminsky, at
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// ark@cs.rit.edu.
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//
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// This Java source file is part of the Parallel Java 2 Library ("PJ2"). PJ2 is
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// free software; you can redistribute it and/or modify it under the terms of
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// the GNU General Public License as published by the Free Software Foundation;
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// either version 3 of the License, or (at your option) any later version.
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//
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// PJ2 is distributed in the hope that it will be useful, but WITHOUT ANY
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// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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// A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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//
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// A copy of the GNU General Public License is provided in the file gpl.txt. You
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// may also obtain a copy of the GNU General Public License on the World Wide
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// Web at http://www.gnu.org/licenses/gpl.html.
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//
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//******************************************************************************
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package edu.rit.draw.item;
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import edu.rit.draw.Drawing;
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import java.awt.Shape;
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import java.awt.geom.RoundRectangle2D;
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/**
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* Class Oval provides an oval {@linkplain DrawingItem}. An oval is a rectangle
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* whose narrower sides have been rounded into half-circles:
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* <P>
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* <CENTER><IMG SRC="doc-files/OvalFig01.png"></CENTER>
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* <P>
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* The static <TT>defaultSize()</TT>, <TT>defaultWidth()</TT>, and
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* <TT>defaultHeight()</TT> methods are provided to set the default size, width,
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* and height. If an oval's size, width, or height is not specified, the current
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* default size, width, or height is used.
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*
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* @author Alan Kaminsky
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* @version 23-Jun-2008
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*/
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public class Oval
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extends RectangularItem
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{
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// Exported constants.
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/**
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* The normal width for ovals (72). <I>Note:</I> 72 points = 1 inch.
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*/
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public static final double NORMAL_WIDTH = 72.0;
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/**
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* The normal height for ovals (72). <I>Note:</I> 72 points = 1 inch.
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*/
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public static final double NORMAL_HEIGHT = 72.0;
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// Hidden data members.
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private static final long serialVersionUID = 2920893107679792184L;
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private static double theDefaultWidth = NORMAL_WIDTH;
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private static double theDefaultHeight = NORMAL_HEIGHT;
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// Exported constructors.
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/**
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* Construct a new oval. The oval's northwest corner is located at (0,0).
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* The oval's size is the default size.
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*/
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public Oval()
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{
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super();
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this.width = theDefaultWidth;
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this.height = theDefaultHeight;
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}
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/**
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* Construct a new oval with the same outline, fill paint, location, and
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* size as the given oval.
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*
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* @param theItem Oval.
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*
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* @exception NullPointerException
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* (unchecked exception) Thrown if <TT>theItem</TT> is null.
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*/
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public Oval
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(Oval theItem)
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{
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super (theItem);
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}
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// Exported operations.
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/**
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* Returns the default size for ovals.
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*
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* @return Default size.
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*/
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public static Size defaultSize()
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{
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return new Size (theDefaultWidth, theDefaultHeight);
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}
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/**
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* Set the default size for ovals.
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*
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* @param theSize Default size.
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*
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* @exception IllegalArgumentException
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* (unchecked exception) Thrown if the width or the height of
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* <TT>theSize</TT> is less than 0.
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*/
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public static void defaultSize
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(Size theSize)
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{
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if (theSize.width < 0.0 || theSize.height < 0.0)
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{
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throw new IllegalArgumentException();
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}
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theDefaultWidth = theSize.width;
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theDefaultHeight = theSize.height;
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}
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/**
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* Returns the default width for ovals.
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*
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* @return Default width.
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*/
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public static double defaultWidth()
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{
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return theDefaultWidth;
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}
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/**
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* Set the default width for ovals.
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*
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* @param theWidth Default width.
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*
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* @exception IllegalArgumentException
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* (unchecked exception) Thrown if <TT>theWidth</TT> is less than 0.
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*/
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public static void defaultWidth
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(double theWidth)
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{
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if (theWidth < 0.0) throw new IllegalArgumentException();
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theDefaultWidth = theWidth;
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}
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/**
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* Returns the default height for ovals.
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*
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* @return Default height.
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*/
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public static double defaultHeight()
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{
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return theDefaultHeight;
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}
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/**
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* Set the default height for ovals.
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*
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* @param theHeight Default height.
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*
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* @exception IllegalArgumentException
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* (unchecked exception) Thrown if <TT>theHeight</TT> is less than 0.
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*/
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public static void defaultHeight
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(double theHeight)
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{
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if (theHeight < 0.0) throw new IllegalArgumentException();
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theDefaultHeight = theHeight;
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}
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/**
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* Set this oval's outline.
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*
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* @param theOutline Outline, or <TT>Outline.NONE</TT>.
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*
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* @return This oval.
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*/
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public Oval outline
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(Outline theOutline)
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{
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doOutline (theOutline);
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return this;
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}
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/**
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* Set this oval's fill paint.
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*
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* @param theFill Fill paint, or <TT>Fill.NONE</TT>.
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*
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* @return This oval.
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*/
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public Oval fill
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(Fill theFill)
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{
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doFill (theFill);
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return this;
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}
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/**
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* Set the size of this oval's bounding box.
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*
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* @param theSize Size.
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*
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* @return This oval.
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*
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* @exception IllegalArgumentException
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* (unchecked exception) Thrown if the width or the height of
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* <TT>theSize</TT> is less than 0.
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*/
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public Oval size
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(Size theSize)
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{
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doSize (theSize);
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return this;
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}
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/**
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* Set the width of this oval's bounding box.
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*
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* @param theWidth Width.
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*
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* @return This oval.
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*
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* @exception IllegalArgumentException
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* (unchecked exception) Thrown if <TT>theWidth</TT> is less than 0.
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*/
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public Oval width
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(double theWidth)
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{
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doWidth (theWidth);
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return this;
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}
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/**
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* Set the height of this oval's bounding box.
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*
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* @param theHeight Height.
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*
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* @return This oval.
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*
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* @exception IllegalArgumentException
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* (unchecked exception) Thrown if <TT>theHeight</TT> is less than 0.
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*/
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public Oval height
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(double theHeight)
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{
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doHeight (theHeight);
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return this;
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}
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/**
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* Set the northwest corner point of this oval's bounding box.
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*
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* @param x X coordinate of northwest corner point.
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* @param y Y coordinate of northwest corner point.
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*
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* @return This oval.
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*/
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public Oval nw
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(double x,
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double y)
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{
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doNw (x, y);
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return this;
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}
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/**
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* Set the northwest corner point of this oval's bounding box.
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*
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* @param thePoint Northwest corner point.
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*
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* @return This oval.
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*
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* @exception NullPointerException
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* (unchecked exception) Thrown if <TT>thePoint</TT> is null.
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*/
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public Oval nw
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(Point thePoint)
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{
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doNw (thePoint.x, thePoint.y);
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return this;
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}
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/**
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* Set the north middle point of this oval's bounding box.
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*
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* @param x X coordinate of north middle point.
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* @param y Y coordinate of north middle point.
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*
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* @return This oval.
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*/
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public Oval n
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(double x,
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double y)
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{
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doN (x, y);
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return this;
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}
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/**
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* Set the north middle point of this oval's bounding box.
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*
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* @param thePoint North middle point.
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*
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* @return This oval.
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*
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* @exception NullPointerException
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* (unchecked exception) Thrown if <TT>thePoint</TT> is null.
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*/
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public Oval n
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(Point thePoint)
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{
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doN (thePoint.x, thePoint.y);
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return this;
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}
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/**
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* Set the northeast corner point of this oval's bounding box.
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*
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* @param x X coordinate of northeast corner point.
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* @param y Y coordinate of northeast corner point.
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*
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* @return This oval.
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*/
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public Oval ne
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(double x,
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double y)
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{
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doNe (x, y);
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return this;
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}
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/**
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* Set the northeast corner point of this oval's bounding box.
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*
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* @param thePoint Northeast corner point.
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*
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* @return This oval.
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*
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* @exception NullPointerException
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* (unchecked exception) Thrown if <TT>thePoint</TT> is null.
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*/
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public Oval ne
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(Point thePoint)
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{
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doNe (thePoint.x, thePoint.y);
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return this;
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}
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/**
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* Set the west middle point of this oval's bounding box.
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*
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* @param x X coordinate of west middle point.
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* @param y Y coordinate of west middle point.
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*
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* @return This oval.
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*/
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public Oval w
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(double x,
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double y)
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{
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doW (x, y);
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return this;
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}
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/**
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* Set the west middle point of this oval's bounding box.
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*
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* @param thePoint West middle point.
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*
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* @return This oval.
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*
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* @exception NullPointerException
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* (unchecked exception) Thrown if <TT>thePoint</TT> is null.
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*/
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public Oval w
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(Point thePoint)
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{
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doW (thePoint.x, thePoint.y);
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return this;
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}
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/**
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* Set the center point of this oval's bounding box.
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*
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* @param x X coordinate of center point.
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* @param y Y coordinate of center point.
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*
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* @return This oval.
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*/
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public Oval c
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(double x,
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double y)
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{
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doC (x, y);
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return this;
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}
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/**
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* Set the center point of this oval's bounding box.
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*
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* @param thePoint Center point.
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*
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* @return This oval.
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*
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* @exception NullPointerException
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* (unchecked exception) Thrown if <TT>thePoint</TT> is null.
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*/
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public Oval c
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(Point thePoint)
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{
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doC (thePoint.x, thePoint.y);
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return this;
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}
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/**
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* Set the east middle point of this oval's bounding box.
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*
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* @param x X coordinate of east middle point.
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* @param y Y coordinate of east middle point.
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*
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* @return This oval.
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*/
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public Oval e
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(double x,
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double y)
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{
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doE (x, y);
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return this;
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}
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/**
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* Set the east middle point of this oval's bounding box.
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*
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* @param thePoint East middle point.
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*
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* @return This oval.
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*
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* @exception NullPointerException
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* (unchecked exception) Thrown if <TT>thePoint</TT> is null.
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*/
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public Oval e
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(Point thePoint)
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{
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doE (thePoint.x, thePoint.y);
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return this;
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}
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/**
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* Set the southwest corner point of this oval's bounding box.
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*
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* @param x X coordinate of southwest corner point.
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* @param y Y coordinate of southwest corner point.
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*
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* @return This oval.
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*/
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public Oval sw
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(double x,
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double y)
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{
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doSw (x, y);
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return this;
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}
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/**
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* Set the southwest corner point of this oval's bounding box.
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*
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* @param thePoint Southwest corner point.
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*
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* @return This oval.
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*
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* @exception NullPointerException
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* (unchecked exception) Thrown if <TT>thePoint</TT> is null.
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*/
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public Oval sw
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(Point thePoint)
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{
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doSw (thePoint.x, thePoint.y);
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return this;
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}
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/**
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* Set the south middle point of this oval's bounding box.
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*
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* @param x X coordinate of south middle point.
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* @param y Y coordinate of south middle point.
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*
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* @return This oval.
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*/
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public Oval s
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(double x,
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double y)
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{
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doS (x, y);
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return this;
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}
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/**
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* Set the south middle point of this oval's bounding box.
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*
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* @param thePoint South middle point.
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*
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* @return This oval.
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*
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* @exception NullPointerException
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* (unchecked exception) Thrown if <TT>thePoint</TT> is null.
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*/
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public Oval s
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(Point thePoint)
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{
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doS (thePoint.x, thePoint.y);
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return this;
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}
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/**
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* Set the southeast corner point of this oval's bounding box.
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*
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* @param x X coordinate of southeast corner point.
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* @param y Y coordinate of southeast corner point.
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*
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* @return This oval.
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*/
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public Oval se
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(double x,
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double y)
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{
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doSe (x, y);
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return this;
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}
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/**
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* Set the southeast corner point of this oval's bounding box.
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*
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* @param thePoint Southeast corner point.
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*
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* @return This oval.
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*
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* @exception NullPointerException
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* (unchecked exception) Thrown if <TT>thePoint</TT> is null.
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*/
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public Oval se
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(Point thePoint)
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{
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doSe (thePoint.x, thePoint.y);
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return this;
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}
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/**
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* Add this oval to the end of the default drawing's sequence of drawing
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* items.
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*
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* @return This oval.
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*
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* @exception NullPointerException
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* (unchecked exception) Thrown if there is no default drawing.
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*
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* @see Drawing#defaultDrawing()
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*/
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public Oval add()
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{
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doAdd (Drawing.defaultDrawing());
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return this;
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}
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/**
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* Add this oval to the end of the given drawing's sequence of drawing
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* items.
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*
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* @param theDrawing Drawing.
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*
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* @return This oval.
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*
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* @exception NullPointerException
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* (unchecked exception) Thrown if <TT>theDrawing</TT> is null.
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*/
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public Oval add
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(Drawing theDrawing)
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{
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doAdd (theDrawing);
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return this;
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}
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/**
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* Add this oval to the beginning of the default drawing's sequence of
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* drawing items.
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*
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* @return This oval.
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*
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* @exception NullPointerException
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* (unchecked exception) Thrown if there is no default drawing.
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*
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* @see Drawing#defaultDrawing()
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*/
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public Oval addFirst()
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{
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doAddFirst (Drawing.defaultDrawing());
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return this;
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}
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/**
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* Add this oval to the beginning of the given drawing's sequence of
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* drawing items.
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*
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* @param theDrawing Drawing.
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*
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* @return This oval.
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*
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* @exception NullPointerException
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* (unchecked exception) Thrown if <TT>theDrawing</TT> is null.
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*/
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public Oval addFirst
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(Drawing theDrawing)
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{
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doAddFirst (theDrawing);
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return this;
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}
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// Hidden operations.
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/**
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* Determine the 2-D graphics shape that this shape object will draw.
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*
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* @return Shape.
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*/
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Shape getShape()
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{
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Point nw = nw();
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double d = Math.min (width, height);
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return new RoundRectangle2D.Double (nw.x, nw.y, width, height, d, d);
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}
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|
|
|
}
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