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    @Override
066    public String getTagName()
067    {
068        return TAG_NAME;
069    }
070
071    @Override
072    protected void build() throws SVGException
073    {
074        super.build();
075
076        StyleAttribute sty = new StyleAttribute();
077
078        if (getPres(sty.setName("cx")))
079        {
080            cx = sty.getFloatValueWithUnits();
081        }
082
083        if (getPres(sty.setName("cy")))
084        {
085            cy = sty.getFloatValueWithUnits();
086        }
087
088        if (getPres(sty.setName("rx")))
089        {
090            rx = sty.getFloatValueWithUnits();
091        }
092
093        if (getPres(sty.setName("ry")))
094        {
095            ry = sty.getFloatValueWithUnits();
096        }
097
098        ellipse.setFrame(cx - rx, cy - ry, rx * 2f, ry * 2f);
099    }
100
101    @Override
102    public void render(Graphics2D g) throws SVGException
103    {
104        beginLayer(g);
105        renderShape(g, ellipse);
106        finishLayer(g);
107    }
108
109    @Override
110    public Shape getShape()
111    {
112        return shapeToParent(ellipse);
113    }
114
115    @Override
116    public Rectangle2D getBoundingBox() throws SVGException
117    {
118        return boundsToParent(includeStrokeInBounds(ellipse.getBounds2D()));
119    }
120
121    /**
122     * Updates all attributes in this diagram associated with a time event. Ie,
123     * all attributes with track information.
124     *
125     * @return - true if this node has changed state as a result of the time
126     * update
127     */
128    @Override
129    public boolean updateTime(double curTime) throws SVGException
130    {
131//        if (trackManager.getNumTracks() == 0) return false;
132        boolean changeState = super.updateTime(curTime);
133
134        //Get current values for parameters
135        StyleAttribute sty = new StyleAttribute();
136        boolean shapeChange = false;
137
138        if (getPres(sty.setName("cx")))
139        {
140            float newCx = sty.getFloatValueWithUnits();
141            if (newCx != cx)
142            {
143                cx = newCx;
144                shapeChange = true;
145            }
146        }
147
148        if (getPres(sty.setName("cy")))
149        {
150            float newCy = sty.getFloatValueWithUnits();
151            if (newCy != cy)
152            {
153                cy = newCy;
154                shapeChange = true;
155            }
156        }
157
158        if (getPres(sty.setName("rx")))
159        {
160            float newRx = sty.getFloatValueWithUnits();
161            if (newRx != rx)
162            {
163                rx = newRx;
164                shapeChange = true;
165            }
166        }
167
168        if (getPres(sty.setName("ry")))
169        {
170            float newRy = sty.getFloatValueWithUnits();
171            if (newRy != ry)
172            {
173                ry = newRy;
174                shapeChange = true;
175            }
176        }
177
178        if (shapeChange)
179        {
180            build();
181//            ellipse.setFrame(cx - rx, cy - ry, rx * 2f, ry * 2f);
182//            return true;
183        }
184
185        return changeState || shapeChange;
186    }
187}