/*
* Animate.java
*
* The Salamander Project - 2D and 3D graphics libraries in Java
* Copyright (C) 2004 Mark McKay
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Mark McKay can be contacted at mark@kitfox.com. Salamander and other
* projects can be found at http://www.kitfox.com
*
* Created on August 15, 2004, 2:51 AM
*/
package com.kitfox.svg.animation;
import com.kitfox.svg.SVGElement;
import com.kitfox.svg.SVGException;
import com.kitfox.svg.SVGLoaderHelper;
import com.kitfox.svg.animation.parser.AnimTimeParser;
import com.kitfox.svg.xml.ColorTable;
import com.kitfox.svg.xml.StyleAttribute;
import java.awt.Color;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
/**
* @author Mark McKay
* @author <a href="mailto:mark@kitfox.com">Mark McKay</a>
*/
public class AnimateColor extends AnimateBase implements AnimateColorIface
{
protected Color fromValue;
protected Color toValue;
/** Creates a new instance of Animate */
public AnimateColor()
{
}
public void loaderStartElement(SVGLoaderHelper helper, Attributes attrs, SVGElement parent) throws SAXException
{
//Load style string
super.loaderStartElement(helper, attrs, parent);
String strn = attrs.getValue("from");
fromValue = ColorTable.parseColor(strn);
strn = attrs.getValue("to");
toValue = ColorTable.parseColor(strn);
}
/**
* Evaluates this animation element for the passed interpolation time. Interp
* must be on [0..1].
*/
public Color evalColor(double interp)
{
int r1 = fromValue.getRed();
int g1 = fromValue.getGreen();
int b1 = fromValue.getBlue();
int r2 = toValue.getRed();
int g2 = toValue.getGreen();
int b2 = toValue.getBlue();
double invInterp = 1.0 - interp;
return new Color((int)(r1 * invInterp + r2 * interp),
(int)(g1 * invInterp + g2 * interp),
(int)(b1 * invInterp + b2 * interp));
}
protected void rebuild(AnimTimeParser animTimeParser) throws SVGException
{
super.rebuild(animTimeParser);
StyleAttribute sty = new StyleAttribute();
if (getPres(sty.setName("from")))
{
String strn = sty.getStringValue();
fromValue = ColorTable.parseColor(strn);
}
if (getPres(sty.setName("to")))
{
String strn = sty.getStringValue();
toValue = ColorTable.parseColor(strn);
}
}
}