com.itextpdf.kernel.pdf.canvas.parser.clipper.Paths 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;
/**
* A pure convenience class to avoid writing {@code List} everywhere.
*
* @author Tobias Mahlmann
*
*/
public class Paths extends ArrayList {
public static Paths closedPathsFromPolyTree( PolyTree polytree ) {
final Paths result = new Paths();
// result.Capacity = polytree.Total;
result.addPolyNode( polytree, PolyNode.NodeType.CLOSED );
return result;
}
public static Paths makePolyTreeToPaths( PolyTree polytree ) {
final Paths result = new Paths();
// result.Capacity = polytree.Total;
result.addPolyNode( polytree, PolyNode.NodeType.ANY );
return result;
}
public static Paths openPathsFromPolyTree( PolyTree polytree ) {
final Paths result = new Paths();
// result.Capacity = polytree.ChildCount;
for (final PolyNode c : polytree.getChilds()) {
if (c.isOpen()) {
result.add( c.getPolygon() );
}
}
return result;
}
/**
*
*/
public Paths() {
super();
}
public Paths( int initialCapacity ) {
super( initialCapacity );
}
public void addPolyNode( PolyNode polynode, PolyNode.NodeType nt ) {
boolean match = true;
switch (nt) {
case OPEN:
return;
case CLOSED:
match = !polynode.isOpen();
break;
default:
break;
}
if (polynode.getPolygon().size() > 0 && match) {
add( polynode.getPolygon() );
}
for (final PolyNode pn : polynode.getChilds()) {
addPolyNode( pn, nt );
}
}
public Paths cleanPolygons() {
return cleanPolygons( 1.415 );
}
public Paths cleanPolygons( double distance ) {
final Paths result = new Paths( size() );
for (int i = 0; i < size(); i++) {
result.add( get( i ).cleanPolygon( distance ) );
}
return result;
}
public LongRect getBounds() {
int i = 0;
final int cnt = size();
final LongRect result = new LongRect();
while (i < cnt && get( i ).isEmpty()) {
i++;
}
if (i == cnt) {
return result;
}
result.left = get( i ).get( 0 ).getX();
result.right = result.left;
result.top = get( i ).get( 0 ).getY();
result.bottom = result.top;
for (; i < cnt; i++) {
for (int j = 0; j < get( i ).size(); j++) {
if (get( i ).get( j ).getX() < result.left) {
result.left = get( i ).get( j ).getX();
}
else if (get( i ).get( j ).getX() > result.right) {
result.right = get( i ).get( j ).getX();
}
if (get( i ).get( j ).getY() < result.top) {
result.top = get( i ).get( j ).getY();
}
else if (get( i ).get( j ).getY() > result.bottom) {
result.bottom = get( i ).get( j ).getY();
}
}
}
return result;
}
public void reversePaths() {
for (final Path poly : this) {
poly.reverse();
}
}
}