001 /*
002 * TrackManager.java
003 *
004 * The Salamander Project - 2D and 3D graphics libraries in Java
005 * Copyright (C) 2004 Mark McKay
006 *
007 * This library is free software; you can redistribute it and/or
008 * modify it under the terms of the GNU Lesser General Public
009 * License as published by the Free Software Foundation; either
010 * version 2.1 of the License, or (at your option) any later version.
011 *
012 * This library is distributed in the hope that it will be useful,
013 * but WITHOUT ANY WARRANTY; without even the implied warranty of
014 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
015 * Lesser General Public License for more details.
016 *
017 * You should have received a copy of the GNU Lesser General Public
018 * License along with this library; if not, write to the Free Software
019 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
020 *
021 * Mark McKay can be contacted at mark@kitfox.com. Salamander and other
022 * projects can be found at http://www.kitfox.com
023 *
024 * Created on August 15, 2004, 11:34 PM
025 */
026
027 package com.kitfox.svg.animation;
028
029 import com.kitfox.svg.xml.StyleAttribute;
030 import java.util.*;
031
032 import com.kitfox.svg.*;
033 import com.kitfox.svg.xml.*;
034
035 /**
036 * A track holds the animation events for a single parameter of a single SVG
037 * element. It also contains the default value for the element, should the
038 * user want to see the 'unanimated' value.
039 *
040 * @author Mark McKay
041 * @author <a href="mailto:mark@kitfox.com">Mark McKay</a>
042 */
043 public class TrackDouble extends TrackBase
044 {
045 public TrackDouble(AnimationElement ele) throws SVGElementException
046 {
047 super(ele.getParent(), ele);
048 }
049
050 public boolean getValue(StyleAttribute attrib, double curTime)
051 {
052 double val = getValue(curTime);
053 if (Double.isNaN(val)) return false;
054
055 attrib.setStringValue("" + val);
056 return true;
057 }
058
059 public double getValue(double curTime)
060 {
061 double retVal = Double.NaN;
062
063 StyleAttribute attr = null;
064 switch (attribType)
065 {
066 case AnimationElement.AT_CSS:
067 attr = parent.getStyleAbsolute(attribName);
068 retVal = attr.getDoubleValue();
069 break;
070 case AnimationElement.AT_XML:
071 attr = parent.getPresAbsolute(attribName);
072 retVal = attr.getDoubleValue();
073 break;
074 case AnimationElement.AT_AUTO:
075 attr = parent.getStyleAbsolute(attribName);
076 if (attr == null) attr = parent.getPresAbsolute(attribName);
077 retVal = attr.getDoubleValue();
078 break;
079 }
080
081
082
083 AnimationTimeEval state = new AnimationTimeEval();
084 // boolean pastEnd = true;
085
086 for (Iterator it = animEvents.iterator(); it.hasNext();)
087 {
088 Animate ele = (Animate)it.next();
089 ele.evalParametric(state, curTime);
090
091 //Go to next element if this one does not affect processing
092 if (Double.isNaN(state.interp)) continue;
093
094 switch (ele.getAdditiveType())
095 {
096 case AnimationElement.AD_SUM:
097 retVal += ele.eval(state.interp);
098 break;
099 case AnimationElement.AD_REPLACE:
100 retVal = ele.eval(state.interp);
101 break;
102 }
103
104 //Evalutae accumulation if applicable
105 if (state.rep > 0)
106 {
107 switch (ele.getAccumulateType())
108 {
109 case AnimationElement.AC_SUM:
110 retVal += ele.repeatSkipSize(state.rep);
111 break;
112 }
113
114 }
115 }
116
117 return retVal;
118 }
119 }