deweese 2004/10/31 03:21:30
Added: sources/org/apache/batik/svggen SVGArc.java
Log:
Missed File.
Revision Changes Path
1.1 xml-batik/sources/org/apache/batik/svggen/SVGArc.java
Index: SVGArc.java
===================================================================
/*
Copyright 2001,2003 The Apache Software Foundation
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package org.apache.batik.svggen;
import java.awt.geom.Arc2D;
import java.awt.geom.Line2D;
import java.awt.geom.Point2D;
import org.w3c.dom.Element;
/**
* Utility class that converts an Arc2D object into
* a corresponding SVG element, i.e., a path with an elliptical arc
* and optionally lines..
*
* @author <a href="mailto:[EMAIL PROTECTED]">Thomas DeWeese</a>
* @version $Id: SVGArc.java,v 1.1 2004/10/31 11:21:30 deweese Exp $
*/
public class SVGArc extends SVGGraphicObjectConverter {
/**
* Line converter used for degenerate cases
*/
private SVGLine svgLine;
/**
* @param generatorContext used to build Elements
*/
public SVGArc(SVGGeneratorContext generatorContext) {
super(generatorContext);
}
/**
* @param arc the Arc2D object to be converted
*/
public Element toSVG(Arc2D arc) {
if ((arc.getWidth() == 0) || (arc.getHeight() == 0)) {
Line2D line = new Line2D.Double
(arc.getX(), arc.getY(),
arc.getX() + arc.getWidth(),
arc.getY() + arc.getHeight());
if (svgLine == null)
svgLine = new SVGLine(generatorContext);
return svgLine.toSVG(line);
}
Element svgPath = generatorContext.domFactory.createElementNS
(SVG_NAMESPACE_URI, SVG_PATH_TAG);
StringBuffer d = new StringBuffer("");
Point2D startPt = arc.getStartPoint();
Point2D endPt = arc.getEndPoint();
double ext = arc.getAngleExtent();
int type = arc.getArcType();
d.append(PATH_MOVE);
d.append(doubleString(startPt.getX()));
d.append(SPACE);
d.append(doubleString(startPt.getY()));
d.append(SPACE);
d.append(PATH_ARC);
d.append(doubleString(arc.getWidth()/2));
d.append(SPACE);
d.append(doubleString(arc.getHeight()/2));
d.append(SPACE);
d.append("0"); // no rotation with J2D arc.
d.append(SPACE);
if (ext > 180) d.append("1"); // use large arc.
else d.append("0"); // use small arc.
d.append(SPACE);
if (ext > 0) d.append("0"); // sweep ccw
else d.append("1"); // sweep cw
d.append(SPACE);
d.append(doubleString(endPt.getX()));
d.append(SPACE);
d.append(doubleString(endPt.getY()));
if (type == Arc2D.CHORD) {
d.append(PATH_CLOSE);
} else if (type == Arc2D.PIE) {
double cx = arc.getX()+arc.getWidth()/2;
double cy = arc.getY()+arc.getHeight()/2;
d.append(PATH_LINE_TO);
d.append(SPACE);
d.append(doubleString(cx));
d.append(SPACE);
d.append(doubleString(cy));
d.append(SPACE);
d.append(PATH_CLOSE);
}
svgPath.setAttributeNS(null, SVG_D_ATTRIBUTE, d.toString());
return svgPath;
}
}
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