com.itextpdf.kernel.pdf.canvas.parser.clipper.PolyTree Maven / Gradle / Ivy
/*
* 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.kernel.pdf.canvas.parser.clipper;
import java.util.ArrayList;
import java.util.List;
public class PolyTree extends PolyNode {
private final List allPolys = new ArrayList<>();
public void Clear() {
allPolys.clear();
childs.clear();
}
public List getAllPolys() {
return allPolys;
}
public PolyNode getFirst() {
if (!childs.isEmpty()) {
return childs.get( 0 );
}
else {
return null;
}
}
public int getTotalSize() {
int result = allPolys.size();
//with negative offsets, ignore the hidden outer polygon ...
if (result > 0 && childs.get( 0 ) != allPolys.get( 0 )) {
result--;
}
return result;
}
}