| /* |
| |
| Licensed to the Apache Software Foundation (ASF) under one or more |
| contributor license agreements. See the NOTICE file distributed with |
| this work for additional information regarding copyright ownership. |
| The ASF licenses this file to You 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.Polygon; |
| import java.awt.geom.PathIterator; |
| |
| import org.w3c.dom.Element; |
| |
| /** |
| * Utility class that converts a Polygon object into |
| * an SVG element. |
| * |
| * @author <a href="mailto:vincent.hardy@eng.sun.com">Vincent Hardy</a> |
| * @version $Id$ |
| */ |
| public class SVGPolygon extends SVGGraphicObjectConverter { |
| /** |
| * @param generatorContext used to build Elements |
| */ |
| public SVGPolygon(SVGGeneratorContext generatorContext) { |
| super(generatorContext); |
| } |
| |
| /** |
| * @param polygon polygon object to convert to SVG |
| */ |
| public Element toSVG(Polygon polygon) { |
| Element svgPolygon = |
| generatorContext.domFactory.createElementNS(SVG_NAMESPACE_URI, |
| SVG_POLYGON_TAG); |
| StringBuffer points = new StringBuffer(" "); |
| PathIterator pi = polygon.getPathIterator(null); |
| float[] seg = new float[6]; |
| while(!pi.isDone()){ |
| int segType = pi.currentSegment(seg); |
| switch(segType){ |
| case PathIterator.SEG_MOVETO: |
| appendPoint(points, seg[0], seg[1]); |
| break; |
| case PathIterator.SEG_LINETO: |
| appendPoint(points, seg[0], seg[1]); |
| break; |
| case PathIterator.SEG_CLOSE: |
| break; |
| case PathIterator.SEG_QUADTO: |
| case PathIterator.SEG_CUBICTO: |
| default: |
| throw new Error("invalid segmentType:" + segType ); |
| } |
| pi.next(); |
| } // while !isDone |
| |
| svgPolygon.setAttributeNS(null, |
| SVG_POINTS_ATTRIBUTE, |
| points.substring(0, points.length() - 1)); |
| |
| return svgPolygon; |
| } |
| |
| /** |
| * Appends a coordinate to the path data |
| */ |
| private void appendPoint(StringBuffer points, float x, float y){ |
| points.append(doubleString(x)); |
| points.append(SPACE); |
| points.append(doubleString(y)); |
| points.append(SPACE); |
| } |
| } |