roundrectangle2d.java

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/*
 * @(#)RoundRectangle2D.java	1.17 03/01/23
 *
 * Copyright 2003 Sun Microsystems, Inc. All rights reserved.
 * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */

package java.awt.geom;

/**
 * The <code>RoundRectangle2D</code> class defines a rectangle with
 * rounded corners defined by a location (x,&nbsp;y), a
 * dimension (w&nbsp;x&nbsp;h), and the width and height of an arc 
 * with which to round the corners.
 * <p>
 * This class is the abstract superclass for all objects that
 * store a 2D rounded rectangle.
 * The actual storage representation of the coordinates is left to
 * the subclass.
 *
 * @version 1.17, 01/23/03
 * @author	Jim Graham
 */
public abstract class RoundRectangle2D extends RectangularShape {
    /**
     * The <code>Float</code> class defines a rectangle with rounded
     * corners all specified in <code>float</code> coordinates.
     */
    public static class Float extends RoundRectangle2D {
	/**
	 * The X coordinate of this <code>RoundRectangle2D</code>.
	 */
	public float x;

	/**
         * The Y coordinate of this <code>RoundRectangle2D</code>.
	 */
	public float y;

	/**
         * The width of this <code>RoundRectangle2D</code>.
	 */
	public float width;

	/**
         * The height of this <code>RoundRectangle2D</code>.
	 */
	public float height;

	/**
	 * The width of the arc that rounds off the corners.
	 */
	public float arcwidth;

	/**
	 * The height of the arc that rounds off the corners.
	 */
	public float archeight;

	/**
	 * Constructs a new <code>RoundRectangle2D</code>, initialized to
         * location (0.0,&nbsp;0), size (0.0,&nbsp;0.0), and corner arcs
         * of radius 0.0.
	 */
	public Float() {
	}

	/**
	 * Constructs and initializes a <code>RoundRectangle2D</code> 
         * from the specified coordinates.
	 * @param x,&nbsp;y the coordinates to which to set the newly
         * constructed <code>RoundRectangle2D</code>
	 * @param w the width to which to set the newly
         * constructed <code>RoundRectangle2D</code>
	 * @param h the height to which to set the newly
         * constructed <code>RoundRectangle2D</code>
         * @param arcw the width of the arc to use to round off the
         * corners of the newly constructed <code>RoundRectangle2D</code>
         * @param arch the height of the arc to use to round off the
         * corners of the newly constructed <code>RoundRectangle2D</code>
	 */
	public Float(float x, float y, float w, float h,
				   float arcw, float arch) {
	    setRoundRect(x, y, w, h, arcw, arch);
	}

	/**
	 * Returns the X coordinate of this <code>RoundRectangle2D</code>
         * in <code>double</code> precision.
         * @return the X coordinate of this <code>RoundRectangle2D</code>.
	 */
	public double getX() {
	    return (double) x;
	}

	/**
	 * Returns the Y coordinate of this <code>RoundRectangle2D</code>
         * in <code>double</code> precision.
         * @return the Y coordinate of this <code>RoundRectangle2D</code>.
         */	
	public double getY() {
	    return (double) y;
	}

	/**
	 * Returns the width of this <code>RoundRectangle2D</code>
         * in <code>double</code> precision.
         * @return the width of this <code>RoundRectangle2D</code>.
         */	
	public double getWidth() {
	    return (double) width;
	}

	/**
         * Returns the height of this <code>RoundRectangle2D</code> 
         * in <code>double</code> precision.
         * @return the height of this <code>RoundRectangle2D</code>. 
         */
	public double getHeight() {
	    return (double) height;
	}

	/**
	 * Returns the width of the arc that rounds off the corners.
         * @return the width of the arc that rounds off the corners
         * of this <code>RoundRectangle2D</code>.
	 */
	public double getArcWidth() {
	    return (double) arcwidth;
	}

	/**
         * Returns the height of the arc that rounds off the corners.
         * @return the height of the arc that rounds off the corners
         * of this <code>RoundRectangle2D</code>. 
         */
	public double getArcHeight() {
	    return (double) archeight;
	}

	/**
	 * Determines whether or not this <code>RoundRectangle2D</code>
         * is empty.
         * @return <code>true</code> if this <code>RoundRectangle2D</code>
         * is empty; <code>false</code> othwerwise.
	 */
	public boolean isEmpty() {
	    return (width <= 0.0f) || (height <= 0.0f);
	}

	/**
	 * Sets the location, size, and arc radii of this 
         * <code>RoundRectangle2D</code> to the
	 * specified <code>float</code> values.
         * @param x,&nbsp;y the coordinates to which to set the
         * location of this <code>RoundRectangle2D</code>
         * @param w the width to which to set this
         * <code>RoundRectangle2D</code>
         * @param h the height to which to set this
         * <code>RoundRectangle2D</code>
         * @param arcw the width to which to set the arc of this
         * <code>RoundRectangle2D</code>
         * @param arch the height to which to set the arc of this
         * <code>RoundRectangle2D</code>
	 */
	public void setRoundRect(float x, float y, float w, float h,
				 float arcw, float arch) {
	    this.x = x;
	    this.y = y;
	    this.width = w;
	    this.height = h;
	    this.arcwidth = arcw;
	    this.archeight = arch;
	}

	/**
	 * Sets the location, size, and arc radii of this 
         * <code>RoundRectangle2D</code> to the
	 * specified <code>double</code> values.
         * @param x,&nbsp;y the coordinates to which to set the
         * location of this <code>RoundRectangle2D</code>
         * @param w the width to which to set this
         * <code>RoundRectangle2D</code>
         * @param h the height to which to set this
         * <code>RoundRectangle2D</code>
         * @param arcw the width to which to set the arc of this
         * <code>RoundRectangle2D</code>
         * @param arch the height to which to set the arc of this
         * <code>RoundRectangle2D</code>	
         */
	public void setRoundRect(double x, double y, double w, double h,
				 double arcw, double arch) {
	    this.x = (float) x;
	    this.y = (float) y;
	    this.width = (float) w;
	    this.height = (float) h;
	    this.arcwidth = (float) arcw;
	    this.archeight = (float) arch;
	}

	/**
	 * Sets this <code>RoundRectangle2D</code> to be the same as the
         * specified <code>RoundRectangle2D</code>.
         * @param rr the specified <code>RoundRectangle2D</code>
	 */
	public void setRoundRect(RoundRectangle2D rr) {
	    this.x = (float) rr.getX();
	    this.y = (float) rr.getY();
	    this.width = (float) rr.getWidth();
	    this.height = (float) rr.getHeight();
	    this.arcwidth = (float) rr.getArcWidth();
	    this.archeight = (float) rr.getArcHeight();
	}

	/**
	 * Returns the high precision bounding box of this
         * <code>RoundRectangle2D</code>.
         * @return a {@link Rectangle2D} that is the bounding
         * box of this <code>RoundRectangle2D</code>.
	 */
	public Rectangle2D getBounds2D() {
	    return new Rectangle2D.Float(x, y, width, height);
	}
    }

    /**
     * The <code>Double</code> class defines a rectangle with rounded
     * corners all specified in <code>double</code> coordinates.
     */
    public static class Double extends RoundRectangle2D {
	/**
         * The X coordinate of this <code>RoundRectangle2D</code>. 
         */
	public double x;

	/**
         * The Y coordinate of this <code>RoundRectangle2D</code>. 
         */
	public double y;

	/**
         * The width of this <code>RoundRectangle2D</code>.
	 */
	public double width;

	/**
         * The height of this <code>RoundRectangle2D</code>.
	 */
	public double height;

	/**
         * The width of the arc that rounds off the corners.
	 */
	public double arcwidth;

	/**
         * The height of the arc that rounds off the corners.
	 */
	public double archeight;

	/**
         * Constructs a new <code>RoundRectangle2D</code>, initialized to
         * location (0.0,&nbsp;0), size (0.0,&nbsp;0.0), and corner arcs
         * of radius 0.0.
         */
	public Double() {
	}

	/**
         * Constructs and initializes a <code>RoundRectangle2D</code>
         * from the specified coordinates.
         * @param x,&nbsp;y the coordinates to which to set the newly
         * constructed <code>RoundRectangle2D</code>
         * @param w the width to which to set the newly
         * constructed <code>RoundRectangle2D</code>
         * @param h the height to which to set the newly
         * constructed <code>RoundRectangle2D</code>
         * @param arcw the width of the arc to use to round off the
         * corners of the newly constructed <code>RoundRectangle2D</code>
         * @param arch the height of the arc to use to round off the 
         * corners of the newly constructed <code>RoundRectangle2D</code>
         */
	public Double(double x, double y, double w, double h,
		      double arcw, double arch) {
	    setRoundRect(x, y, w, h, arcw, arch);
	}

	/**
         * Returns the X coordinate of this <code>RoundRectangle2D</code>
         * in <code>double</code> precision.
         * @return the X coordinate of this <code>RoundRectangle2D</code>.
         */
	public double getX() {
	    return x;
	}

	/**
         * Returns the Y coordinate of this <code>RoundRectangle2D</code>
         * in <code>double</code> precision.
         * @return the Y coordinate of this <code>RoundRectangle2D</code>.
         */
	public double getY() {
	    return y;
	}

	/**
         * Returns the width of this <code>RoundRectangle2D</code>
         * in <code>double</code> precision.