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.*;
044import com.kitfox.svg.xml.*;
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 TrackMotion extends TrackBase
055{
056    public TrackMotion(AnimationElement ele) throws SVGElementException
057    {
058        //The motion element implies a CSS attribute of transform
059//        super(ele.getParent(), "transform", AnimationElement.AT_CSS);
060        super(ele.getParent(), ele);
061    }
062
063    public boolean getValue(StyleAttribute attrib, double curTime) throws SVGException
064    {
065        AffineTransform retVal = new AffineTransform();
066        retVal = getValue(retVal, curTime);
067//        AffineTransform val = getValue(curTime);
068//        if (val == null) return false;
069
070        double[] mat = new double[6];
071        retVal.getMatrix(mat);
072        attrib.setStringValue("matrix(" + mat[0] + " " + mat[1] + " " + mat[2] + " " + mat[3] + " " + mat[4] + " " + mat[5] + ")");
073        return true;
074    }
075
076    public AffineTransform getValue(AffineTransform retVal, double curTime) throws SVGException
077    {
078        //Init transform with default state
079        StyleAttribute attr = null;
080        switch (attribType)
081        {
082            case AnimationElement.AT_CSS:
083                attr = parent.getStyleAbsolute(attribName);
084                retVal.setTransform(SVGElement.parseSingleTransform(attr.getStringValue()));
085                break;
086            case AnimationElement.AT_XML:
087                attr = parent.getPresAbsolute(attribName);
088                retVal.setTransform(SVGElement.parseSingleTransform(attr.getStringValue()));
089                break;
090            case AnimationElement.AT_AUTO:
091                attr = parent.getStyleAbsolute(attribName);
092                if (attr == null) attr = parent.getPresAbsolute(attribName);
093                retVal.setTransform(SVGElement.parseSingleTransform(attr.getStringValue()));
094                break;
095        }
096
097
098        //Update transform with time based information
099        AnimationTimeEval state = new AnimationTimeEval();
100        AffineTransform xform = new AffineTransform();
101//        boolean pastEnd = true;
102
103        for (Iterator it = animEvents.iterator(); it.hasNext();)
104        {
105            AnimateMotion ele = (AnimateMotion)it.next();
106            ele.evalParametric(state, curTime);
107
108            //Go to next element if this one does not affect processing
109            if (Double.isNaN(state.interp)) continue;
110
111            switch (ele.getAdditiveType())
112            {
113                case AnimationElement.AD_SUM:
114                    retVal.concatenate(ele.eval(xform, state.interp));
115                    break;
116                case AnimationElement.AD_REPLACE:
117                    retVal.setTransform(ele.eval(xform, state.interp));
118                    break;
119            }
120
121            //Evaluate accumulation if applicable
122/*
123            if (state.rep > 0)
124            {
125                switch (ele.getAccumulateType())
126                {
127                    case AnimationElement.AC_SUM:
128                        retVal += ele.repeatSkipSize(state.rep);
129                        break;
130                }
131
132            }
133*/
134        }
135
136        return retVal;
137    }
138}