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 TrackTransform extends TrackBase
055{
056    public TrackTransform(AnimationElement ele) throws SVGElementException
057    {
058        super(ele.getParent(), ele);
059    }
060
061    public boolean getValue(StyleAttribute attrib, double curTime) throws SVGException
062    {
063        AffineTransform retVal = new AffineTransform();
064        retVal = getValue(retVal, curTime);
065//        AffineTransform val = getValue(curTime);
066//        if (val == null) return false;
067
068        double[] mat = new double[6];
069        retVal.getMatrix(mat);
070        attrib.setStringValue("matrix(" + mat[0] + " " + mat[1] + " " + mat[2] + " " + mat[3] + " " + mat[4] + " " + mat[5] + ")");
071        return true;
072    }
073
074    public AffineTransform getValue(AffineTransform retVal, double curTime) throws SVGException
075    {
076        //Init transform with default state
077        StyleAttribute attr = null;
078        switch (attribType)
079        {
080            case AnimationElement.AT_CSS:
081                attr = parent.getStyleAbsolute(attribName);
082                retVal.setTransform(SVGElement.parseSingleTransform(attr.getStringValue()));
083                break;
084            case AnimationElement.AT_XML:
085                attr = parent.getPresAbsolute(attribName);
086                retVal.setTransform(SVGElement.parseSingleTransform(attr.getStringValue()));
087                break;
088            case AnimationElement.AT_AUTO:
089                attr = parent.getStyleAbsolute(attribName);
090                if (attr == null) attr = parent.getPresAbsolute(attribName);
091                retVal.setTransform(SVGElement.parseSingleTransform(attr.getStringValue()));
092                break;
093        }
094
095
096        //Update transform with time based information
097        AnimationTimeEval state = new AnimationTimeEval();
098        AffineTransform xform = new AffineTransform();
099
100        for (Iterator it = animEvents.iterator(); it.hasNext();)
101        {
102            AnimateXform ele = (AnimateXform)it.next();
103            ele.evalParametric(state, curTime);
104
105            //Go to next element if this one does not affect processing
106            if (Double.isNaN(state.interp)) continue;
107
108            switch (ele.getAdditiveType())
109            {
110                case AnimationElement.AD_SUM:
111                    retVal.concatenate(ele.eval(xform, state.interp));
112                    break;
113                case AnimationElement.AD_REPLACE:
114                    retVal.setTransform(ele.eval(xform, state.interp));
115                    break;
116            }
117
118        }
119
120        return retVal;
121    }
122}