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iText, a free Java-PDF library
/*
* $Id: 8336a81f24fc74250e225fb445d635a4fd507218 $
*
* This file is part of the iText (R) project.
* Copyright (c) 2014-2015 iText Group NV
* Authors: Bruno Lowagie, Paulo Soares, et al.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License version 3
* as published by the Free Software Foundation with the addition of the
* following permission added to Section 15 as permitted in Section 7(a):
* FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY
* ITEXT GROUP. ITEXT GROUP DISCLAIMS THE WARRANTY OF NON INFRINGEMENT
* OF THIRD PARTY RIGHTS
*
* This program 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 Affero General Public License for more details.
* You should have received a copy of the GNU Affero General Public License
* along with this program; if not, see http://www.gnu.org/licenses or write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA, 02110-1301 USA, or download the license from the following URL:
* http://itextpdf.com/terms-of-use/
*
* The interactive user interfaces in modified source and object code versions
* of this program must display Appropriate Legal Notices, as required under
* Section 5 of the GNU Affero General Public License.
*
* In accordance with Section 7(b) of the GNU Affero General Public License,
* a covered work must retain the producer line in every PDF that is created
* or manipulated using iText.
*
* You can be released from the requirements of the license by purchasing
* a commercial license. Buying such a license is mandatory as soon as you
* develop commercial activities involving the iText software without
* disclosing the source code of your own applications.
* These activities include: offering paid services to customers as an ASP,
* serving PDFs on the fly in a web application, shipping iText with a closed
* source product.
*
* For more information, please contact iText Software Corp. at this
* address: [email protected]
*
*
* This class is based on the C# open source freeware library Clipper:
* http://www.angusj.com/delphi/clipper.php
* The original classes were distributed under the Boost Software License:
*
* Freeware for both open source and commercial applications
* Copyright 2010-2014 Angus Johnson
* Boost Software License - Version 1.0 - August 17th, 2003
*
* Permission is hereby granted, free of charge, to any person or organization
* obtaining a copy of the software and accompanying documentation covered by
* this license (the "Software") to use, reproduce, display, distribute,
* execute, and transmit the Software, and to prepare derivative works of the
* Software, and to permit third-parties to whom the Software is furnished to
* do so, all subject to the following:
*
* The copyright notices in the Software and this entire statement, including
* the above license grant, this restriction and the following disclaimer,
* must be included in all copies of the Software, in whole or in part, and
* all derivative works of the Software, unless such copies or derivative
* works are solely in the form of machine-executable object code generated by
* a source language processor.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
* SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
* FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
package com.itextpdf.text.pdf.parser.clipper;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import com.itextpdf.text.pdf.parser.clipper.Clipper.EndType;
import com.itextpdf.text.pdf.parser.clipper.Clipper.JoinType;
import com.itextpdf.text.pdf.parser.clipper.Point.LongPoint;
public class PolyNode {
enum NodeType {
ANY, OPEN, CLOSED
}
private PolyNode parent;
private final Path polygon = new Path();
private int index;
private JoinType joinType;
private EndType endType;
protected final List childs = new ArrayList();
private boolean isOpen;
public void addChild( PolyNode child ) {
final int cnt = childs.size();
childs.add( child );
child.parent = this;
child.index = cnt;
}
public int getChildCount() {
return childs.size();
}
public List getChilds() {
return Collections.unmodifiableList( childs );
}
public List getContour() {
return polygon;
}
public EndType getEndType() {
return endType;
}
public JoinType getJoinType() {
return joinType;
}
public PolyNode getNext() {
if (!childs.isEmpty()) {
return childs.get( 0 );
}
else {
return getNextSiblingUp();
}
}
private PolyNode getNextSiblingUp() {
if (parent == null) {
return null;
}
else if (index == parent.childs.size() - 1) {
return parent.getNextSiblingUp();
}
else {
return parent.childs.get( index + 1 );
}
}
public PolyNode getParent() {
return parent;
}
public Path getPolygon() {
return polygon;
}
public boolean isHole() {
return isHoleNode();
}
private boolean isHoleNode() {
boolean result = true;
PolyNode node = parent;
while (node != null) {
result = !result;
node = node.parent;
}
return result;
}
public boolean isOpen() {
return isOpen;
}
public void setEndType( EndType value ) {
endType = value;
}
public void setJoinType( JoinType value ) {
joinType = value;
}
public void setOpen( boolean isOpen ) {
this.isOpen = isOpen;
}
public void setParent( PolyNode n ) {
parent = n;
}
}