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 September 21, 2004, 11:34 PM
035 */
036
037package com.kitfox.svg.animation;
038
039import com.kitfox.svg.xml.StyleAttribute;
040import java.awt.geom.*;
041import java.util.*;
042
043import com.kitfox.svg.pathcmd.*;
044import com.kitfox.svg.*;
045
046/**
047 * A track holds the animation events for a single parameter of a single SVG
048 * element.  It also contains the default value for the element, should the
049 * user want to see the 'unanimated' value.
050 *
051 * @author Mark McKay
052 * @author <a href="mailto:mark@kitfox.com">Mark McKay</a>
053 */
054public class TrackPath extends TrackBase
055{
056
057    public TrackPath(AnimationElement ele) throws SVGElementException
058    {
059        super(ele.getParent(), ele);
060    }
061
062    @Override
063    public boolean getValue(StyleAttribute attrib, double curTime)
064    {
065        GeneralPath path = getValue(curTime);
066        if (path == null) return false;
067
068        attrib.setStringValue(PathUtil.buildPathString(path));
069        return true;
070    }
071
072    public GeneralPath getValue(double curTime)
073    {
074        GeneralPath retVal = null;
075        AnimationTimeEval state = new AnimationTimeEval();
076
077        for (AnimationElement animationElement : animEvents) {
078            AnimateBase ele = (AnimateBase)animationElement;
079            Animate eleAnim = (Animate)ele;
080            ele.evalParametric(state, curTime);
081
082            //Reject value if it is in the invalid state
083            if (Double.isNaN(state.interp)) continue;
084
085            if (retVal == null)
086            {
087                retVal = eleAnim.evalPath(state.interp);
088                continue;
089            }
090            
091            GeneralPath curPath = eleAnim.evalPath(state.interp);
092            switch (ele.getAdditiveType())
093            {
094                case AnimationElement.AD_REPLACE:
095                    retVal = curPath;
096                    break;
097                case AnimationElement.AD_SUM:
098                    throw new RuntimeException("Not implemented");
099//                    retVal = new Color(curCol.getRed() + retVal.getRed(), curCol.getGreen() + retVal.getGreen(), curCol.getBlue() + retVal.getBlue());
100//                    break;
101                default:
102                    throw new RuntimeException();
103            }
104        }
105
106        return retVal;
107    }
108}