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.*;
041import java.util.*;
042
043import com.kitfox.svg.*;
044
045/**
046 * A track holds the animation events for a single parameter of a single SVG
047 * element.  It also contains the default value for the element, should the
048 * user want to see the 'unanimated' value.
049 *
050 * @author Mark McKay
051 * @author <a href="mailto:mark@kitfox.com">Mark McKay</a>
052 */
053public class TrackColor extends TrackBase
054{
055
056    public TrackColor(AnimationElement ele) throws SVGElementException
057    {
058        super(ele.getParent(), ele);
059    }
060
061    @Override
062    public boolean getValue(StyleAttribute attrib, double curTime)
063    {
064        Color col = getValue(curTime);
065        if (col == null) return false;
066
067        attrib.setStringValue("#" + Integer.toHexString(col.getRGB()));
068        return true;
069    }
070
071    public Color getValue(double curTime)
072    {
073        Color retVal = null;
074        AnimationTimeEval state = new AnimationTimeEval();
075
076        for (AnimationElement animationElement : animEvents) {
077            AnimateBase ele = (AnimateBase)animationElement;
078            AnimateColorIface eleColor = (AnimateColorIface)ele;
079            ele.evalParametric(state, curTime);
080
081            //Reject value if it is in the invalid state
082            if (Double.isNaN(state.interp)) continue;
083
084            if (retVal == null)
085            {
086                retVal = eleColor.evalColor(state.interp);
087                continue;
088            }
089            
090            Color curCol = eleColor.evalColor(state.interp);
091            switch (ele.getAdditiveType())
092            {
093                case AnimationElement.AD_REPLACE:
094                    retVal = curCol;
095                    break;
096                case AnimationElement.AD_SUM:
097                    retVal = new Color(curCol.getRed() + retVal.getRed(), curCol.getGreen() + retVal.getGreen(), curCol.getBlue() + retVal.getBlue());
098                    break;
099            }
100        }
101
102        return retVal;
103    }
104}