001/*
002 * SVG Salamander
003 * Copyright (c) 2004, Mark McKay
004 * All rights reserved.
005 *
006 * Redistribution and use in source and binary forms, with or 
007 * without modification, are permitted provided that the following
008 * conditions are met:
009 *
010 *   - Redistributions of source code must retain the above 
011 *     copyright notice, this list of conditions and the following
012 *     disclaimer.
013 *   - Redistributions in binary form must reproduce the above
014 *     copyright notice, this list of conditions and the following
015 *     disclaimer in the documentation and/or other materials 
016 *     provided with the distribution.
017 *
018 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
019 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
020 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
021 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
022 * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
023 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
024 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
025 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
026 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
027 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
028 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
029 * OF THE POSSIBILITY OF SUCH DAMAGE. 
030 * 
031 * Mark McKay can be contacted at mark@kitfox.com.  Salamander and other
032 * projects can be found at http://www.kitfox.com
033 *
034 * Created on January 26, 2004, 5:25 PM
035 */
036package com.kitfox.svg;
037
038import com.kitfox.svg.xml.StyleAttribute;
039import java.awt.Graphics2D;
040import java.awt.Shape;
041import java.awt.geom.Ellipse2D;
042import java.awt.geom.Rectangle2D;
043
044/**
045 * @author Mark McKay
046 * @author <a href="mailto:mark@kitfox.com">Mark McKay</a>
047 */
048public class Ellipse extends ShapeElement
049{
050
051    public static final String TAG_NAME = "ellipse";
052    float cx = 0.0f;
053    float cy = 0.0f;
054    float rx = 0.0f;
055    float ry = 0.0f;
056    Ellipse2D.Float ellipse = new Ellipse2D.Float();
057
058    /**
059     * Creates a new instance of Rect
060     */
061    public Ellipse()
062    {
063    }
064
065    public String getTagName()
066    {
067        return TAG_NAME;
068    }
069
070    protected void build() throws SVGException
071    {
072        super.build();
073
074        StyleAttribute sty = new StyleAttribute();
075
076        if (getPres(sty.setName("cx")))
077        {
078            cx = sty.getFloatValueWithUnits();
079        }
080
081        if (getPres(sty.setName("cy")))
082        {
083            cy = sty.getFloatValueWithUnits();
084        }
085
086        if (getPres(sty.setName("rx")))
087        {
088            rx = sty.getFloatValueWithUnits();
089        }
090
091        if (getPres(sty.setName("ry")))
092        {
093            ry = sty.getFloatValueWithUnits();
094        }
095
096        ellipse.setFrame(cx - rx, cy - ry, rx * 2f, ry * 2f);
097    }
098
099    public void render(Graphics2D g) throws SVGException
100    {
101        beginLayer(g);
102        renderShape(g, ellipse);
103        finishLayer(g);
104    }
105
106    public Shape getShape()
107    {
108        return shapeToParent(ellipse);
109    }
110
111    public Rectangle2D getBoundingBox() throws SVGException
112    {
113        return boundsToParent(includeStrokeInBounds(ellipse.getBounds2D()));
114    }
115
116    /**
117     * Updates all attributes in this diagram associated with a time event. Ie,
118     * all attributes with track information.
119     *
120     * @return - true if this node has changed state as a result of the time
121     * update
122     */
123    public boolean updateTime(double curTime) throws SVGException
124    {
125//        if (trackManager.getNumTracks() == 0) return false;
126        boolean changeState = super.updateTime(curTime);
127
128        //Get current values for parameters
129        StyleAttribute sty = new StyleAttribute();
130        boolean shapeChange = false;
131
132        if (getPres(sty.setName("cx")))
133        {
134            float newCx = sty.getFloatValueWithUnits();
135            if (newCx != cx)
136            {
137                cx = newCx;
138                shapeChange = true;
139            }
140        }
141
142        if (getPres(sty.setName("cy")))
143        {
144            float newCy = sty.getFloatValueWithUnits();
145            if (newCy != cy)
146            {
147                cy = newCy;
148                shapeChange = true;
149            }
150        }
151
152        if (getPres(sty.setName("rx")))
153        {
154            float newRx = sty.getFloatValueWithUnits();
155            if (newRx != rx)
156            {
157                rx = newRx;
158                shapeChange = true;
159            }
160        }
161
162        if (getPres(sty.setName("ry")))
163        {
164            float newRy = sty.getFloatValueWithUnits();
165            if (newRy != ry)
166            {
167                ry = newRy;
168                shapeChange = true;
169            }
170        }
171
172        if (shapeChange)
173        {
174            build();
175//            ellipse.setFrame(cx - rx, cy - ry, rx * 2f, ry * 2f);
176//            return true;
177        }
178
179        return changeState || shapeChange;
180    }
181}