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Easel helper functions. Download this as a zip file and add dependencies to your app.
// rev 452
/********************************************************************************
* *
* Author : Angus Johnson *
* Version : 6.1.3a *
* Date : 22 January 2014 *
* Website : http://www.angusj.com *
* Copyright : Angus Johnson 2010-2014 *
* *
* License: *
* Use, modification & distribution is subject to Boost Software License Ver 1. *
* http://www.boost.org/LICENSE_1_0.txt *
* *
* Attributions: *
* The code in this library is an extension of Bala Vatti's clipping algorithm: *
* "A generic solution to polygon clipping" *
* Communications of the ACM, Vol 35, Issue 7 (July 1992) pp 56-63. *
* http://portal.acm.org/citation.cfm?id=129906 *
* *
* Computer graphics and geometric modeling: implementation and algorithms *
* By Max K. Agoston *
* Springer; 1 edition (January 4, 2005) *
* http://books.google.com/books?q=vatti+clipping+agoston *
* *
* See also: *
* "Polygon Offsetting by Computing Winding Numbers" *
* Paper no. DETC2005-85513 pp. 565-575 *
* ASME 2005 International Design Engineering Technical Conferences *
* and Computers and Information in Engineering Conference (IDETC/CIE2005) *
* September 24-28, 2005 , Long Beach, California, USA *
* http://www.me.berkeley.edu/~mcmains/pubs/DAC05OffsetPolygon.pdf *
* *
*******************************************************************************/
/*******************************************************************************
* *
* Author : Timo *
* Version : 6.1.3.2 *
* Date : 1 February 2014 *
* *
* This is a translation of the C# Clipper library to Javascript. *
* Int128 struct of C# is implemented using JSBN of Tom Wu. *
* Because Javascript lacks support for 64-bit integers, the space *
* is a little more restricted than in C# version. *
* *
* C# version has support for coordinate space: *
* +-4611686018427387903 ( sqrt(2^127 -1)/2 ) *
* while Javascript version has support for space: *
* +-4503599627370495 ( sqrt(2^106 -1)/2 ) *
* *
* Tom Wu's JSBN proved to be the fastest big integer library: *
* http://jsperf.com/big-integer-library-test *
* *
* This class can be made simpler when (if ever) 64-bit integer support comes. *
* *
*******************************************************************************/
/*******************************************************************************
* *
* Basic JavaScript BN library - subset useful for RSA encryption. *
* http://www-cs-students.stanford.edu/~tjw/jsbn/ *
* Copyright (c) 2005 Tom Wu *
* All Rights Reserved. *
* See "LICENSE" for details: *
* http://www-cs-students.stanford.edu/~tjw/jsbn/LICENSE *
* *
*******************************************************************************/
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a;c<this.t;++c)b[c-a]=this[c];b.t=Math.max(this.t-a,0);b.s=this.s};k.prototype.lShiftTo=function(a,b){var c=a%this.DB,e=this.DB-c,d=(1<<e)-1,g=Math.floor(a/this.DB),h=this.s<<c&this.DM,l;for(l=this.t-1;0<=l;--l)b[l+g+1]=this[l]>>e|h,h=(this[l]&d)<<c;for(l=g-1;0<=l;--l)b[l]=0;b[g]=h;b.t=this.t+g+1;b.s=this.s;b.clamp()};k.prototype.rShiftTo=function(a,b){b.s=this.s;var c=Math.floor(a/this.DB);if(c>=this.t)b.t=0;else{var e=a%this.DB,d=this.DB-e,g=(1<<e)-1;b[0]=this[c]>>e;for(var h=c+1;h<this.t;++h)b[h-
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k.prototype.exp=function(a,b){if(4294967295<a||1>a)return k.ONE;var c=q(),e=q(),d=b.convert(this),g=C(a)-1;for(d.copyTo(c);0<=--g;)if(b.sqrTo(c,e),0<(a&1<<g))b.mulTo(e,d,c);else var h=c,c=e,e=h;return b.revert(c)};k.prototype.toString=function(a){if(0>this.s)return"-"+this.negate().toString(a);if(16==a)a=4;else if(8==a)a=3;else if(2==a)a=1;else if(32==a)a=5;else if(4==a)a=2;else return this.toRadix(a);var b=(1<<a)-1,c,e=!1,d="",g=this.t,h=this.DB-g*this.DB%a;if(0<g--)for(h<this.DB&&0<(c=this[g]>>
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-b:b;for(;0<=--c;)if(0!=(b=this[c]-a[c]))return b;return 0};k.prototype.bitLength=function(){return 0>=this.t?0:this.DB*(this.t-1)+C(this[this.t-1]^this.s&this.DM)};k.prototype.mod=function(a){var b=q();this.abs().divRemTo(a,null,b);0>this.s&&0<b.compareTo(k.ZERO)&&a.subTo(b,b);return b};k.prototype.modPowInt=function(a,b){var c;c=256>a||b.isEven()?new x(b):new y(b);return this.exp(a,c)};k.ZERO=v(0);k.ONE=v(1);A.prototype.convert=O;A.prototype.revert=O;A.prototype.mulTo=function(a,b,c){a.multiplyTo(b,
c)};A.prototype.sqrTo=function(a,b){a.squareTo(b)};w.prototype.convert=function(a){if(0>a.s||a.t>2*this.m.t)return a.mod(this.m);if(0>a.compareTo(this.m))return a;var b=q();a.copyTo(b);this.reduce(b);return b};w.prototype.revert=function(a){return a};w.prototype.reduce=function(a){a.drShiftTo(this.m.t-1,this.r2);a.t>this.m.t+1&&(a.t=this.m.t+1,a.clamp());this.mu.multiplyUpperTo(this.r2,this.m.t+1,this.q3);for(this.m.multiplyLowerTo(this.q3,this.m.t+1,this.r2);0>a.compareTo(this.r2);)a.dAddOffset(1,
this.m.t+1);for(a.subTo(this.r2,a);0<=a.compareTo(this.m);)a.subTo(this.m,a)};w.prototype.mulTo=function(a,b,c){a.multiplyTo(b,c);this.reduce(c)};w.prototype.sqrTo=function(a,b){a.squareTo(b);this.reduce(b)};var t=[2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,97,101,103,107,109,113,127,131,137,139,149,151,157,163,167,173,179,181,191,193,197,199,211,223,227,229,233,239,241,251,257,263,269,271,277,281,283,293,307,311,313,317,331,337,347,349,353,359,367,373,379,383,389,397,401,
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a&&(a=10);if(0==this.signum()||2>a||36<a)return"0";var b=this.chunkSize(a),b=Math.pow(a,b),c=v(b),e=q(),d=q(),g="";for(this.divRemTo(c,e,d);0<e.signum();)g=(b+d.intValue()).toString(a).substr(1)+g,e.divRemTo(c,e,d);return d.intValue().toString(a)+g};k.prototype.fromRadix=function(a,b){this.fromInt(0);null==b&&(b=10);for(var c=this.chunkSize(b),e=Math.pow(b,c),d=!1,g=0,h=0,l=0;l<a.length;++l){var z=L(a,l);0>z?"-"==a.charAt(l)&&0==this.signum()&&(d=!0):(h=b*h+z,++g>=c&&(this.dMultiply(e),this.dAddOffset(h,
0),h=g=0))}0<g&&(this.dMultiply(Math.pow(b,g)),this.dAddOffset(h,0));d&&k.ZERO.subTo(this,this)};k.prototype.fromNumber=function(a,b,c){if("number"==typeof b)if(2>a)this.fromInt(1);else for(this.fromNumber(a,c),this.testBit(a-1)||this.bitwiseTo(k.ONE.shiftLeft(a-1),I,this),this.isEven()&&this.dAddOffset(1,0);!this.isProbablePrime(b);)this.dAddOffset(2,0),this.bitLength()>a&&this.subTo(k.ONE.shiftLeft(a-1),this);else{c=[];var e=a&7;c.length=(a>>3)+1;b.nextBytes(c);c[0]=0<e?c[0]&(1<<e)-1:0;this.fromString(c,
256)}};k.prototype.bitwiseTo=function(a,b,c){var e,d,g=Math.min(a.t,this.t);for(e=0;e<g;++e)c[e]=b(this[e],a[e]);if(a.t<this.t){d=a.s&this.DM;for(e=g;e<this.t;++e)c[e]=b(this[e],d);c.t=this.t}else{d=this.s&this.DM;for(e=g;e<a.t;++e)c[e]=b(d,a[e]);c.t=a.t}c.s=b(this.s,a.s);c.clamp()};k.prototype.changeBit=function(a,b){var c=k.ONE.shiftLeft(a);this.bitwiseTo(c,b,c);return c};k.prototype.addTo=function(a,b){for(var c=0,e=0,d=Math.min(a.t,this.t);c<d;)e+=this[c]+a[c],b[c++]=e&this.DM,e>>=this.DB;if(a.t<
this.t){for(e+=a.s;c<this.t;)e+=this[c],b[c++]=e&this.DM,e>>=this.DB;e+=this.s}else{for(e+=this.s;c<a.t;)e+=a[c],b[c++]=e&this.DM,e>>=this.DB;e+=a.s}b.s=0>e?-1:0;0<e?b[c++]=e:-1>e&&(b[c++]=this.DV+e);b.t=c;b.clamp()};k.prototype.dMultiply=function(a){this[this.t]=this.am(0,a-1,this,0,0,this.t);++this.t;this.clamp()};k.prototype.dAddOffset=function(a,b){if(0!=a){for(;this.t<=b;)this[this.t++]=0;for(this[b]+=a;this[b]>=this.DV;)this[b]-=this.DV,++b>=this.t&&(this[this.t++]=0),++this[b]}};k.prototype.multiplyLowerTo=
function(a,b,c){var e=Math.min(this.t+a.t,b);c.s=0;for(c.t=e;0<e;)c[--e]=0;var d;for(d=c.t-this.t;e<d;++e)c[e+this.t]=this.am(0,a[e],c,e,0,this.t);for(d=Math.min(a.t,b);e<d;++e)this.am(0,a[e],c,e,0,b-e);c.clamp()};k.prototype.multiplyUpperTo=function(a,b,c){--b;var e=c.t=this.t+a.t-b;for(c.s=0;0<=--e;)c[e]=0;for(e=Math.max(b-this.t,0);e<a.t;++e)c[this.t+e-b]=this.am(b-e,a[e],c,0,0,this.t+e-b);c.clamp();c.drShiftTo(1,c)};k.prototype.modInt=function(a){if(0>=a)return 0;var b=this.DV%a,c=0>this.s?a-
1:0;if(0<this.t)if(0==b)c=this[0]%a;else for(var e=this.t-1;0<=e;--e)c=(b*c+this[e])%a;return c};k.prototype.millerRabin=function(a){var b=this.subtract(k.ONE),c=b.getLowestSetBit();if(0>=c)return!1;var e=b.shiftRight(c);a=a+1>>1;a>t.length&&(a=t.length);for(var d=q(),g=0;g<a;++g){d.fromInt(t[Math.floor(Math.random()*t.length)]);var h=d.modPow(e,this);if(0!=h.compareTo(k.ONE)&&0!=h.compareTo(b)){for(var l=1;l++<c&&0!=h.compareTo(b);)if(h=h.modPowInt(2,this),0==h.compareTo(k.ONE))return!1;if(0!=h.compareTo(b))return!1}}return!0};
k.prototype.clone=function(){var a=q();this.copyTo(a);return a};k.prototype.intValue=function(){if(0>this.s){if(1==this.t)return this[0]-this.DV;if(0==this.t)return-1}else{if(1==this.t)return this[0];if(0==this.t)return 0}return(this[1]&(1<<32-this.DB)-1)<<this.DB|this[0]};k.prototype.byteValue=function(){return 0==this.t?this.s:this[0]<<24>>24};k.prototype.shortValue=function(){return 0==this.t?this.s:this[0]<<16>>16};k.prototype.signum=function(){return 0>this.s?-1:0>=this.t||1==this.t&&0>=this[0]?
0:1};k.prototype.toByteArray=function(){var a=this.t,b=[];b[0]=this.s;var c=this.DB-a*this.DB%8,e,d=0;if(0<a--)for(c<this.DB&&(e=this[a]>>c)!=(this.s&this.DM)>>c&&(b[d++]=e|this.s<<this.DB-c);0<=a;)if(8>c?(e=(this[a]&(1<<c)-1)<<8-c,e|=this[--a]>>(c+=this.DB-8)):(e=this[a]>>(c-=8)&255,0>=c&&(c+=this.DB,--a)),0!=(e&128)&&(e|=-256),0==d&&(this.s&128)!=(e&128)&&++d,0<d||e!=this.s)b[d++]=e;return b};k.prototype.equals=function(a){return 0==this.compareTo(a)};k.prototype.min=function(a){return 0>this.compareTo(a)?
this:a};k.prototype.max=function(a){return 0<this.compareTo(a)?this:a};k.prototype.and=function(a){var b=q();this.bitwiseTo(a,T,b);return b};k.prototype.or=function(a){var b=q();this.bitwiseTo(a,I,b);return b};k.prototype.xor=function(a){var b=q();this.bitwiseTo(a,M,b);return b};k.prototype.andNot=function(a){var b=q();this.bitwiseTo(a,N,b);return b};k.prototype.not=function(){for(var a=q(),b=0;b<this.t;++b)a[b]=this.DM&~this[b];a.t=this.t;a.s=~this.s;return a};k.prototype.shiftLeft=function(a){var b=
q();0>a?this.rShiftTo(-a,b):this.lShiftTo(a,b);return b};k.prototype.shiftRight=function(a){var b=q();0>a?this.lShiftTo(-a,b):this.rShiftTo(a,b);return b};k.prototype.getLowestSetBit=function(){for(var a=0;a<this.t;++a)if(0!=this[a]){var b=a*this.DB;a=this[a];if(0==a)a=-1;else{var c=0;0==(a&65535)&&(a>>=16,c+=16);0==(a&255)&&(a>>=8,c+=8);0==(a&15)&&(a>>=4,c+=4);0==(a&3)&&(a>>=2,c+=2);0==(a&1)&&++c;a=c}return b+a}return 0>this.s?this.t*this.DB:-1};k.prototype.bitCount=function(){for(var a=0,b=this.s&
this.DM,c=0;c<this.t;++c){for(var e=this[c]^b,d=0;0!=e;)e&=e-1,++d;a+=d}return a};k.prototype.testBit=function(a){var b=Math.floor(a/this.DB);return b>=this.t?0!=this.s:0!=(this[b]&1<<a%this.DB)};k.prototype.setBit=function(a){return this.changeBit(a,I)};k.prototype.clearBit=function(a){return this.changeBit(a,N)};k.prototype.flipBit=function(a){return this.changeBit(a,M)};k.prototype.add=function(a){var b=q();this.addTo(a,b);return b};k.prototype.subtract=function(a){var b=q();this.subTo(a,b);return b};
k.prototype.multiply=function(a){var b=q();this.multiplyTo(a,b);return b};k.prototype.divide=function(a){var b=q();this.divRemTo(a,b,null);return b};k.prototype.remainder=function(a){var b=q();this.divRemTo(a,null,b);return b};k.prototype.divideAndRemainder=function(a){var b=q(),c=q();this.divRemTo(a,b,c);return[b,c]};k.prototype.modPow=function(a,b){var c=a.bitLength(),e,d=v(1),g;if(0>=c)return d;e=18>c?1:48>c?3:144>c?4:768>c?5:6;g=8>c?new x(b):b.isEven()?new w(b):new y(b);var h=[],l=3,k=e-1,n=(1<<
e)-1;h[1]=g.convert(this);if(1<e)for(c=q(),g.sqrTo(h[1],c);l<=n;)h[l]=q(),g.mulTo(c,h[l-2],h[l]),l+=2;for(var m=a.t-1,p,r=!0,s=q(),c=C(a[m])-1;0<=m;){c>=k?p=a[m]>>c-k&n:(p=(a[m]&(1<<c+1)-1)<<k-c,0<m&&(p|=a[m-1]>>this.DB+c-k));for(l=e;0==(p&1);)p>>=1,--l;0>(c-=l)&&(c+=this.DB,--m);if(r)h[p].copyTo(d),r=!1;else{for(;1<l;)g.sqrTo(d,s),g.sqrTo(s,d),l-=2;0<l?g.sqrTo(d,s):(l=d,d=s,s=l);g.mulTo(s,h[p],d)}for(;0<=m&&0==(a[m]&1<<c);)g.sqrTo(d,s),l=d,d=s,s=l,0>--c&&(c=this.DB-1,--m)}return g.revert(d)};k.prototype.modInverse=
function(a){var b=a.isEven();if(this.isEven()&&b||0==a.signum())return k.ZERO;for(var c=a.clone(),e=this.clone(),d=v(1),g=v(0),h=v(0),l=v(1);0!=c.signum();){for(;c.isEven();)c.rShiftTo(1,c),b?(d.isEven()&&g.isEven()||(d.addTo(this,d),g.subTo(a,g)),d.rShiftTo(1,d)):g.isEven()||g.subTo(a,g),g.rShiftTo(1,g);for(;e.isEven();)e.rShiftTo(1,e),b?(h.isEven()&&l.isEven()||(h.addTo(this,h),l.subTo(a,l)),h.rShiftTo(1,h)):l.isEven()||l.subTo(a,l),l.rShiftTo(1,l);0<=c.compareTo(e)?(c.subTo(e,c),b&&d.subTo(h,d),
g.subTo(l,g)):(e.subTo(c,e),b&&h.subTo(d,h),l.subTo(g,l))}if(0!=e.compareTo(k.ONE))return k.ZERO;if(0<=l.compareTo(a))return l.subtract(a);if(0>l.signum())l.addTo(a,l);else return l;return 0>l.signum()?l.add(a):l};k.prototype.pow=function(a){return this.exp(a,new A)};k.prototype.gcd=function(a){var b=0>this.s?this.negate():this.clone();a=0>a.s?a.negate():a.clone();if(0>b.compareTo(a)){var c=b,b=a;a=c}var c=b.getLowestSetBit(),e=a.getLowestSetBit();if(0>e)return b;c<e&&(e=c);0<e&&(b.rShiftTo(e,b),
a.rShiftTo(e,a));for(;0<b.signum();)0<(c=b.getLowestSetBit())&&b.rShiftTo(c,b),0<(c=a.getLowestSetBit())&&a.rShiftTo(c,a),0<=b.compareTo(a)?(b.subTo(a,b),b.rShiftTo(1,b)):(a.subTo(b,a),a.rShiftTo(1,a));0<e&&a.lShiftTo(e,a);return a};k.prototype.isProbablePrime=function(a){var b,c=this.abs();if(1==c.t&&c[0]<=t[t.length-1]){for(b=0;b<t.length;++b)if(c[0]==t[b])return!0;return!1}if(c.isEven())return!1;for(b=1;b<t.length;){for(var e=t[b],d=b+1;d<t.length&&e<V;)e*=t[d++];for(e=c.modInt(e);b<d;)if(0==e%
t[b++])return!1}return c.millerRabin(a)};k.prototype.square=function(){var a=q();this.squareTo(a);return a};var m=k;m.prototype.IsNegative=function(){return-1==this.compareTo(m.ZERO)?!0:!1};m.op_Equality=function(a,b){return 0==a.compareTo(b)?!0:!1};m.op_Inequality=function(a,b){return 0!=a.compareTo(b)?!0:!1};m.op_GreaterThan=function(a,b){return 0<a.compareTo(b)?!0:!1};m.op_LessThan=function(a,b){return 0>a.compareTo(b)?!0:!1};m.op_Addition=function(a,b){return(new m(a)).add(new m(b))};m.op_Subtraction=
function(a,b){return(new m(a)).subtract(new m(b))};m.Int128Mul=function(a,b){return(new m(a)).multiply(new m(b))};m.op_Division=function(a,b){return a.divide(b)};m.prototype.ToDouble=function(){return parseFloat(this.toString())};if("undefined"==typeof K)var K=function(a,b){var c;if("undefined"==typeof Object.getOwnPropertyNames)for(c in b.prototype){if("undefined"==typeof a.prototype[c]||a.prototype[c]==Object.prototype[c])a.prototype[c]=b.prototype[c]}else for(var e=Object.getOwnPropertyNames(b.prototype),
d=0;d<e.length;d++)"undefined"==typeof Object.getOwnPropertyDescriptor(a.prototype,e[d])&&Object.defineProperty(a.prototype,e[d],Object.getOwnPropertyDescriptor(b.prototype,e[d]));for(c in b)"undefined"==typeof a[c]&&(a[c]=b[c]);a.$baseCtor=b};d.Path=function(){return[]};d.Paths=function(){return[]};d.DoublePoint=function(){var a=arguments;this.Y=this.X=0;1==a.length?(this.X=a[0].X,this.Y=a[0].Y):2==a.length&&(this.X=a[0],this.Y=a[1])};d.DoublePoint0=function(){this.Y=this.X=0};d.DoublePoint1=function(a){this.X=
a.X;this.Y=a.Y};d.DoublePoint2=function(a,b){this.X=a;this.Y=b};d.PolyNode=function(){this.m_Parent=null;this.m_polygon=new d.Path;this.m_endtype=this.m_jointype=this.m_Index=0;this.m_Childs=[];this.IsOpen=!1};d.PolyNode.prototype.IsHoleNode=function(){for(var a=!0,b=this.m_Parent;null!==b;)a=!a,b=b.m_Parent;return a};d.PolyNode.prototype.ChildCount=function(){return this.m_Childs.length};d.PolyNode.prototype.Contour=function(){return this.m_polygon};d.PolyNode.prototype.AddChild=function(a){var b=
this.m_Childs.length;this.m_Childs.push(a);a.m_Parent=this;a.m_Index=b};d.PolyNode.prototype.GetNext=function(){return 0<this.m_Childs.length?this.m_Childs[0]:this.GetNextSiblingUp()};d.PolyNode.prototype.GetNextSiblingUp=function(){return null===this.m_Parent?null:this.m_Index==this.m_Parent.m_Childs.length-1?this.m_Parent.GetNextSiblingUp():this.m_Parent.m_Childs[this.m_Index+1]};d.PolyNode.prototype.Childs=function(){return this.m_Childs};d.PolyNode.prototype.Parent=function(){return this.m_Parent};
d.PolyNode.prototype.IsHole=function(){return this.IsHoleNode()};d.PolyTree=function(){this.m_AllPolys=[];d.PolyNode.call(this)};d.PolyTree.prototype.Clear=function(){for(var a=0,b=this.m_AllPolys.length;a<b;a++)this.m_AllPolys[a]=null;this.m_AllPolys.length=0;this.m_Childs.length=0};d.PolyTree.prototype.GetFirst=function(){return 0<this.m_Childs.length?this.m_Childs[0]:null};d.PolyTree.prototype.Total=function(){return this.m_AllPolys.length};K(d.PolyTree,d.PolyNode);d.Math_Abs_Int64=d.Math_Abs_Int32=
d.Math_Abs_Double=function(a){return Math.abs(a)};d.Math_Max_Int32_Int32=function(a,b){return Math.max(a,b)};d.Cast_Int32=p||G||J?function(a){return a|0}:function(a){return~~a};d.Cast_Int64=E?function(a){return-2147483648>a||2147483647<a?0>a?Math.ceil(a):Math.floor(a):~~a}:F&&"function"==typeof Number.toInteger?function(a){return Number.toInteger(a)}:P||H?function(a){return parseInt(a,10)}:p?function(a){return-2147483648>a||2147483647<a?0>a?Math.ceil(a):Math.floor(a):a|0}:function(a){return 0>a?Math.ceil(a):
Math.floor(a)};d.Clear=function(a){a.length=0};d.PI=3.141592653589793;d.PI2=6.283185307179586;d.IntPoint=function(){var a;a=arguments;var b=a.length;this.Y=this.X=0;2==b?(this.X=a[0],this.Y=a[1]):1==b?a[0]instanceof d.DoublePoint?(a=a[0],this.X=d.Clipper.Round(a.X),this.Y=d.Clipper.Round(a.Y)):(a=a[0],this.X=a.X,this.Y=a.Y):this.Y=this.X=0};d.IntPoint.op_Equality=function(a,b){return a.X==b.X&&a.Y==b.Y};d.IntPoint.op_Inequality=function(a,b){return a.X!=b.X||a.Y!=b.Y};d.IntPoint0=function(){this.Y=
this.X=0};d.IntPoint1=function(a){this.X=a.X;this.Y=a.Y};d.IntPoint1dp=function(a){this.X=d.Clipper.Round(a.X);this.Y=d.Clipper.Round(a.Y)};d.IntPoint2=function(a,b){this.X=a;this.Y=b};d.IntRect=function(){var a=arguments,b=a.length;4==b?(this.left=a[0],this.top=a[1],this.right=a[2],this.bottom=a[3]):1==b?(this.left=ir.left,this.top=ir.top,this.right=ir.right,this.bottom=ir.bottom):this.bottom=this.right=this.top=this.left=0};d.IntRect0=function(){this.bottom=this.right=this.top=this.left=0};d.IntRect1=
function(a){this.left=a.left;this.top=a.top;this.right=a.right;this.bottom=a.bottom};d.IntRect4=function(a,b,c,e){this.left=a;this.top=b;this.right=c;this.bottom=e};d.ClipType={ctIntersection:0,ctUnion:1,ctDifference:2,ctXor:3};d.PolyType={ptSubject:0,ptClip:1};d.PolyFillType={pftEvenOdd:0,pftNonZero:1,pftPositive:2,pftNegative:3};d.JoinType={jtSquare:0,jtRound:1,jtMiter:2};d.EndType={etOpenSquare:0,etOpenRound:1,etOpenButt:2,etClosedLine:3,etClosedPolygon:4};d.EdgeSide={esLeft:0,esRight:1};d.Direction=
{dRightToLeft:0,dLeftToRight:1};d.TEdge=function(){this.Bot=new d.IntPoint;this.Curr=new d.IntPoint;this.Top=new d.IntPoint;this.Delta=new d.IntPoint;this.Dx=0;this.PolyTyp=d.PolyType.ptSubject;this.Side=d.EdgeSide.esLeft;this.OutIdx=this.WindCnt2=this.WindCnt=this.WindDelta=0;this.PrevInSEL=this.NextInSEL=this.PrevInAEL=this.NextInAEL=this.NextInLML=this.Prev=this.Next=null};d.IntersectNode=function(){this.Edge2=this.Edge1=null;this.Pt=new d.IntPoint};d.MyIntersectNodeSort=function(){};d.MyIntersectNodeSort.Compare=
function(a,b){return b.Pt.Y-a.Pt.Y};d.LocalMinima=function(){this.Y=0;this.Next=this.RightBound=this.LeftBound=null};d.Scanbeam=function(){this.Y=0;this.Next=null};d.OutRec=function(){this.Idx=0;this.IsOpen=this.IsHole=!1;this.PolyNode=this.BottomPt=this.Pts=this.FirstLeft=null};d.OutPt=function(){this.Idx=0;this.Pt=new d.IntPoint;this.Prev=this.Next=null};d.Join=function(){this.OutPt2=this.OutPt1=null;this.OffPt=new d.IntPoint};d.ClipperBase=function(){this.m_CurrentLM=this.m_MinimaList=null;this.m_edges=
[];this.PreserveCollinear=this.m_HasOpenPaths=this.m_UseFullRange=!1;this.m_CurrentLM=this.m_MinimaList=null;this.m_HasOpenPaths=this.m_UseFullRange=!1};d.ClipperBase.horizontal=-9007199254740992;d.ClipperBase.Skip=-2;d.ClipperBase.Unassigned=-1;d.ClipperBase.tolerance=1E-20;d.ClipperBase.loRange=47453132;d.ClipperBase.hiRange=0xfffffffffffff;d.ClipperBase.near_zero=function(a){return a>-d.ClipperBase.tolerance&&a<d.ClipperBase.tolerance};d.ClipperBase.IsHorizontal=function(a){return 0===a.Delta.Y};
d.ClipperBase.prototype.PointIsVertex=function(a,b){var c=b;do{if(d.IntPoint.op_Equality(c.Pt,a))return!0;c=c.Next}while(c!=b);return!1};d.ClipperBase.prototype.PointOnLineSegment=function(a,b,c,e){return e?a.X==b.X&&a.Y==b.Y||a.X==c.X&&a.Y==c.Y||a.X>b.X==a.X<c.X&&a.Y>b.Y==a.Y<c.Y&&m.op_Equality(m.Int128Mul(a.X-b.X,c.Y-b.Y),m.Int128Mul(c.X-b.X,a.Y-b.Y)):a.X==b.X&&a.Y==b.Y||a.X==c.X&&a.Y==c.Y||a.X>b.X==a.X<c.X&&a.Y>b.Y==a.Y<c.Y&&(a.X-b.X)*(c.Y-b.Y)==(c.X-b.X)*(a.Y-b.Y)};d.ClipperBase.prototype.PointOnPolygon=
function(a,b,c){for(var e=b;;){if(this.PointOnLineSegment(a,e.Pt,e.Next.Pt,c))return!0;e=e.Next;if(e==b)break}return!1};d.ClipperBase.prototype.SlopesEqual=d.ClipperBase.SlopesEqual=function(){var a=arguments,b=a.length,c,e,f;if(3==b)return b=a[0],c=a[1],(a=a[2])?m.op_Equality(m.Int128Mul(b.Delta.Y,c.Delta.X),m.Int128Mul(b.Delta.X,c.Delta.Y)):d.Cast_Int64(b.Delta.Y*c.Delta.X)==d.Cast_Int64(b.Delta.X*c.Delta.Y);if(4==b)return b=a[0],c=a[1],e=a[2],(a=a[3])?m.op_Equality(m.Int128Mul(b.Y-c.Y,c.X-e.X),
m.Int128Mul(b.X-c.X,c.Y-e.Y)):0===d.Cast_Int64((b.Y-c.Y)*(c.X-e.X))-d.Cast_Int64((b.X-c.X)*(c.Y-e.Y));b=a[0];c=a[1];e=a[2];f=a[3];return(a=a[4])?m.op_Equality(m.Int128Mul(b.Y-c.Y,e.X-f.X),m.Int128Mul(b.X-c.X,e.Y-f.Y)):0===d.Cast_Int64((b.Y-c.Y)*(e.X-f.X))-d.Cast_Int64((b.X-c.X)*(e.Y-f.Y))};d.ClipperBase.SlopesEqual3=function(a,b,c){return c?m.op_Equality(m.Int128Mul(a.Delta.Y,b.Delta.X),m.Int128Mul(a.Delta.X,b.Delta.Y)):d.Cast_Int64(a.Delta.Y*b.Delta.X)==d.Cast_Int64(a.Delta.X*b.Delta.Y)};d.ClipperBase.SlopesEqual4=
function(a,b,c,e){return e?m.op_Equality(m.Int128Mul(a.Y-b.Y,b.X-c.X),m.Int128Mul(a.X-b.X,b.Y-c.Y)):0===d.Cast_Int64((a.Y-b.Y)*(b.X-c.X))-d.Cast_Int64((a.X-b.X)*(b.Y-c.Y))};d.ClipperBase.SlopesEqual5=function(a,b,c,e,f){return f?m.op_Equality(m.Int128Mul(a.Y-b.Y,c.X-e.X),m.Int128Mul(a.X-b.X,c.Y-e.Y)):0===d.Cast_Int64((a.Y-b.Y)*(c.X-e.X))-d.Cast_Int64((a.X-b.X)*(c.Y-e.Y))};d.ClipperBase.prototype.Clear=function(){this.DisposeLocalMinimaList();for(var a=0,b=this.m_edges.length;a<b;++a){for(var c=0,
e=this.m_edges[a].length;c<e;++c)this.m_edges[a][c]=null;d.Clear(this.m_edges[a])}d.Clear(this.m_edges);this.m_HasOpenPaths=this.m_UseFullRange=!1};d.ClipperBase.prototype.DisposeLocalMinimaList=function(){for(;null!==this.m_MinimaList;){var a=this.m_MinimaList.Next;this.m_MinimaList=null;this.m_MinimaList=a}this.m_CurrentLM=null};d.ClipperBase.prototype.RangeTest=function(a,b){if(b.Value)(a.X>d.ClipperBase.hiRange||a.Y>d.ClipperBase.hiRange||-a.X>d.ClipperBase.hiRange||-a.Y>d.ClipperBase.hiRange)&&
d.Error("Coordinate outside allowed range in RangeTest().");else if(a.X>d.ClipperBase.loRange||a.Y>d.ClipperBase.loRange||-a.X>d.ClipperBase.loRange||-a.Y>d.ClipperBase.loRange)b.Value=!0,this.RangeTest(a,b)};d.ClipperBase.prototype.InitEdge=function(a,b,c,e){a.Next=b;a.Prev=c;a.Curr.X=e.X;a.Curr.Y=e.Y;a.OutIdx=-1};d.ClipperBase.prototype.InitEdge2=function(a,b){a.Curr.Y>=a.Next.Curr.Y?(a.Bot.X=a.Curr.X,a.Bot.Y=a.Curr.Y,a.Top.X=a.Next.Curr.X,a.Top.Y=a.Next.Curr.Y):(a.Top.X=a.Curr.X,a.Top.Y=a.Curr.Y,
a.Bot.X=a.Next.Curr.X,a.Bot.Y=a.Next.Curr.Y);this.SetDx(a);a.PolyTyp=b};d.ClipperBase.prototype.FindNextLocMin=function(a){for(var b;;){for(;d.IntPoint.op_Inequality(a.Bot,a.Prev.Bot)||d.IntPoint.op_Equality(a.Curr,a.Top);)a=a.Next;if(a.Dx!=d.ClipperBase.horizontal&&a.Prev.Dx!=d.ClipperBase.horizontal)break;for(;a.Prev.Dx==d.ClipperBase.horizontal;)a=a.Prev;for(b=a;a.Dx==d.ClipperBase.horizontal;)a=a.Next;if(a.Top.Y!=a.Prev.Bot.Y){b.Prev.Bot.X<a.Bot.X&&(a=b);break}}return a};d.ClipperBase.prototype.ProcessBound=
function(a,b){var c=a,e=a,f;a.Dx==d.ClipperBase.horizontal&&(f=b?a.Prev.Bot.X:a.Next.Bot.X,a.Bot.X!=f&&this.ReverseHorizontal(a));if(e.OutIdx!=d.ClipperBase.Skip)if(b){for(;e.Top.Y==e.Next.Bot.Y&&e.Next.OutIdx!=d.ClipperBase.Skip;)e=e.Next;if(e.Dx==d.ClipperBase.horizontal&&e.Next.OutIdx!=d.ClipperBase.Skip){for(f=e;f.Prev.Dx==d.ClipperBase.horizontal;)f=f.Prev;f.Prev.Top.X==e.Next.Top.X?b||(e=f.Prev):f.Prev.Top.X>e.Next.Top.X&&(e=f.Prev)}for(;a!=e;)a.NextInLML=a.Next,a.Dx==d.ClipperBase.horizontal&&
a!=c&&a.Bot.X!=a.Prev.Top.X&&this.ReverseHorizontal(a),a=a.Next;a.Dx==d.ClipperBase.horizontal&&a!=c&&a.Bot.X!=a.Prev.Top.X&&this.ReverseHorizontal(a);e=e.Next}else{for(;e.Top.Y==e.Prev.Bot.Y&&e.Prev.OutIdx!=d.ClipperBase.Skip;)e=e.Prev;if(e.Dx==d.ClipperBase.horizontal&&e.Prev.OutIdx!=d.ClipperBase.Skip){for(f=e;f.Next.Dx==d.ClipperBase.horizontal;)f=f.Next;f.Next.Top.X==e.Prev.Top.X?b||(e=f.Next):f.Next.Top.X>e.Prev.Top.X&&(e=f.Next)}for(;a!=e;)a.NextInLML=a.Prev,a.Dx==d.ClipperBase.horizontal&&
a!=c&&a.Bot.X!=a.Next.Top.X&&this.ReverseHorizontal(a),a=a.Prev;a.Dx==d.ClipperBase.horizontal&&a!=c&&a.Bot.X!=a.Next.Top.X&&this.ReverseHorizontal(a);e=e.Prev}if(e.OutIdx==d.ClipperBase.Skip){a=e;if(b){for(;a.Top.Y==a.Next.Bot.Y;)a=a.Next;for(;a!=e&&a.Dx==d.ClipperBase.horizontal;)a=a.Prev}else{for(;a.Top.Y==a.Prev.Bot.Y;)a=a.Prev;for(;a!=e&&a.Dx==d.ClipperBase.horizontal;)a=a.Next}a==e?e=b?a.Next:a.Prev:(a=b?e.Next:e.Prev,c=new d.LocalMinima,c.Next=null,c.Y=a.Bot.Y,c.LeftBound=null,c.RightBound=
a,c.RightBound.WindDelta=0,e=this.ProcessBound(c.RightBound,b),this.InsertLocalMinima(c))}return e};d.ClipperBase.prototype.AddPath=function(a,b,c){c||b!=d.PolyType.ptClip||d.Error("AddPath: Open paths must be subject.");var e=a.length-1;if(c)for(;0<e&&d.IntPoint.op_Equality(a[e],a[0]);)--e;for(;0<e&&d.IntPoint.op_Equality(a[e],a[e-1]);)--e;if(c&&2>e||!c&&1>e)return!1;for(var f=[],g=0;g<=e;g++)f.push(new d.TEdge);var h=!0;f[1].Curr.X=a[1].X;f[1].Curr.Y=a[1].Y;var l={Value:this.m_UseFullRange};this.RangeTest(a[0],
l);this.m_UseFullRange=l.Value;l.Value=this.m_UseFullRange;this.RangeTest(a[e],l);this.m_UseFullRange=l.Value;this.InitEdge(f[0],f[1],f[e],a[0]);this.InitEdge(f[e],f[0],f[e-1],a[e]);for(g=e-1;1<=g;--g)l.Value=this.m_UseFullRange,this.RangeTest(a[g],l),this.m_UseFullRange=l.Value,this.InitEdge(f[g],f[g+1],f[g-1],a[g]);for(g=a=e=f[0];;)if(d.IntPoint.op_Equality(a.Curr,a.Next.Curr)){if(a==a.Next)break;a==e&&(e=a.Next);g=a=this.RemoveEdge(a)}else{if(a.Prev==a.Next)break;else if(c&&d.ClipperBase.SlopesEqual(a.Prev.Curr,
a.Curr,a.Next.Curr,this.m_UseFullRange)&&(!this.PreserveCollinear||!this.Pt2IsBetweenPt1AndPt3(a.Prev.Curr,a.Curr,a.Next.Curr))){a==e&&(e=a.Next);a=this.RemoveEdge(a);g=a=a.Prev;continue}a=a.Next;if(a==g)break}if(!c&&a==a.Next||c&&a.Prev==a.Next)return!1;c||(this.m_HasOpenPaths=!0,e.Prev.OutIdx=d.ClipperBase.Skip);a=e;do this.InitEdge2(a,b),a=a.Next,h&&a.Curr.Y!=e.Curr.Y&&(h=!1);while(a!=e);if(h){if(c)return!1;a.Prev.OutIdx=d.ClipperBase.Skip;a.Prev.Bot.X<a.Prev.Top.X&&this.ReverseHorizontal(a.Prev);
b=new d.LocalMinima;b.Next=null;b.Y=a.Bot.Y;b.LeftBound=null;b.RightBound=a;b.RightBound.Side=d.EdgeSide.esRight;for(b.RightBound.WindDelta=0;a.Next.OutIdx!=d.ClipperBase.Skip;)a.NextInLML=a.Next,a.Bot.X!=a.Prev.Top.X&&this.ReverseHorizontal(a),a=a.Next;this.InsertLocalMinima(b);this.m_edges.push(f);return!0}this.m_edges.push(f);for(h=null;;){a=this.FindNextLocMin(a);if(a==h)break;else null==h&&(h=a);b=new d.LocalMinima;b.Next=null;b.Y=a.Bot.Y;a.Dx<a.Prev.Dx?(b.LeftBound=a.Prev,b.RightBound=a,f=!1):
(b.LeftBound=a,b.RightBound=a.Prev,f=!0);b.LeftBound.Side=d.EdgeSide.esLeft;b.RightBound.Side=d.EdgeSide.esRight;b.LeftBound.WindDelta=c?b.LeftBound.Next==b.RightBound?-1:1:0;b.RightBound.WindDelta=-b.LeftBound.WindDelta;a=this.ProcessBound(b.LeftBound,f);e=this.ProcessBound(b.RightBound,!f);b.LeftBound.OutIdx==d.ClipperBase.Skip?b.LeftBound=null:b.RightBound.OutIdx==d.ClipperBase.Skip&&(b.RightBound=null);this.InsertLocalMinima(b);f||(a=e)}return!0};d.ClipperBase.prototype.AddPaths=function(a,b,
c){for(var e=!1,d=0,g=a.length;d<g;++d)this.AddPath(a[d],b,c)&&(e=!0);return e};d.ClipperBase.prototype.Pt2IsBetweenPt1AndPt3=function(a,b,c){return d.IntPoint.op_Equality(a,c)||d.IntPoint.op_Equality(a,b)||d.IntPoint.op_Equality(c,b)?!1:a.X!=c.X?b.X>a.X==b.X<c.X:b.Y>a.Y==b.Y<c.Y};d.ClipperBase.prototype.RemoveEdge=function(a){a.Prev.Next=a.Next;a.Next.Prev=a.Prev;var b=a.Next;a.Prev=null;return b};d.ClipperBase.prototype.SetDx=function(a){a.Delta.X=a.Top.X-a.Bot.X;a.Delta.Y=a.Top.Y-a.Bot.Y;a.Dx=
0===a.Delta.Y?d.ClipperBase.horizontal:a.Delta.X/a.Delta.Y};d.ClipperBase.prototype.InsertLocalMinima=function(a){if(null===this.m_MinimaList)this.m_MinimaList=a;else if(a.Y>=this.m_MinimaList.Y)a.Next=this.m_MinimaList,this.m_MinimaList=a;else{for(var b=this.m_MinimaList;null!==b.Next&&a.Y<b.Next.Y;)b=b.Next;a.Next=b.Next;b.Next=a}};d.ClipperBase.prototype.PopLocalMinima=function(){null!==this.m_CurrentLM&&(this.m_CurrentLM=this.m_CurrentLM.Next)};d.ClipperBase.prototype.ReverseHorizontal=function(a){var b=
a.Top.X;a.Top.X=a.Bot.X;a.Bot.X=b};d.ClipperBase.prototype.Reset=function(){this.m_CurrentLM=this.m_MinimaList;if(null!=this.m_CurrentLM)for(var a=this.m_MinimaList;null!=a;){var b=a.LeftBound;null!=b&&(b.Curr.X=b.Bot.X,b.Curr.Y=b.Bot.Y,b.Side=d.EdgeSide.esLeft,b.OutIdx=d.ClipperBase.Unassigned);b=a.RightBound;null!=b&&(b.Curr.X=b.Bot.X,b.Curr.Y=b.Bot.Y,b.Side=d.EdgeSide.esRight,b.OutIdx=d.ClipperBase.Unassigned);a=a.Next}};d.Clipper=function(a){"undefined"==typeof a&&(a=0);this.m_PolyOuts=null;this.m_ClipType=
d.ClipType.ctIntersection;this.m_IntersectNodeComparer=this.m_IntersectList=this.m_SortedEdges=this.m_ActiveEdges=this.m_Scanbeam=null;this.m_ExecuteLocked=!1;this.m_SubjFillType=this.m_ClipFillType=d.PolyFillType.pftEvenOdd;this.m_GhostJoins=this.m_Joins=null;this.StrictlySimple=this.ReverseSolution=this.m_UsingPolyTree=!1;d.ClipperBase.call(this);this.m_SortedEdges=this.m_ActiveEdges=this.m_Scanbeam=null;this.m_IntersectList=[];this.m_IntersectNodeComparer=d.MyIntersectNodeSort.Compare;this.m_UsingPolyTree=
this.m_ExecuteLocked=!1;this.m_PolyOuts=[];this.m_Joins=[];this.m_GhostJoins=[];this.ReverseSolution=0!==(1&a);this.StrictlySimple=0!==(2&a);this.PreserveCollinear=0!==(4&a)};d.Clipper.ioReverseSolution=1;d.Clipper.ioStrictlySimple=2;d.Clipper.ioPreserveCollinear=4;d.Clipper.prototype.Clear=function(){0!==this.m_edges.length&&(this.DisposeAllPolyPts(),d.ClipperBase.prototype.Clear.call(this))};d.Clipper.prototype.DisposeScanbeamList=function(){for(;null!==this.m_Scanbeam;){var a=this.m_Scanbeam.Next;
this.m_Scanbeam=null;this.m_Scanbeam=a}};d.Clipper.prototype.Reset=function(){d.ClipperBase.prototype.Reset.call(this);this.m_SortedEdges=this.m_ActiveEdges=this.m_Scanbeam=null;for(var a=this.m_MinimaList;null!==a;)this.InsertScanbeam(a.Y),a=a.Next};d.Clipper.prototype.InsertScanbeam=function(a){if(null===this.m_Scanbeam)this.m_Scanbeam=new d.Scanbeam,this.m_Scanbeam.Next=null,this.m_Scanbeam.Y=a;else if(a>this.m_Scanbeam.Y){var b=new d.Scanbeam;b.Y=a;b.Next=this.m_Scanbeam;this.m_Scanbeam=b}else{for(var c=
this.m_Scanbeam;null!==c.Next&&a<=c.Next.Y;)c=c.Next;a!=c.Y&&(b=new d.Scanbeam,b.Y=a,b.Next=c.Next,c.Next=b)}};d.Clipper.prototype.Execute=function(){var a=arguments,b=a.length,c=a[1]instanceof d.PolyTree;if(4!=b||c){if(4==b&&c){var b=a[0],e=a[1],c=a[2],a=a[3];if(this.m_ExecuteLocked)return!1;this.m_ExecuteLocked=!0;this.m_SubjFillType=c;this.m_ClipFillType=a;this.m_ClipType=b;this.m_UsingPolyTree=!0;try{(f=this.ExecuteInternal())&&this.BuildResult2(e)}finally{this.DisposeAllPolyPts(),this.m_ExecuteLocked=
!1}return f}if(2==b&&!c||2==b&&c)return b=a[0],e=a[1],this.Execute(b,e,d.PolyFillType.pftEvenOdd,d.PolyFillType.pftEvenOdd)}else{b=a[0];e=a[1];c=a[2];a=a[3];if(this.m_ExecuteLocked)return!1;this.m_HasOpenPaths&&d.Error("Error: PolyTree struct is need for open path clipping.");this.m_ExecuteLocked=!0;d.Clear(e);this.m_SubjFillType=c;this.m_ClipFillType=a;this.m_ClipType=b;this.m_UsingPolyTree=!1;try{var f=this.ExecuteInternal();f&&this.BuildResult(e)}finally{this.DisposeAllPolyPts(),this.m_ExecuteLocked=
!1}return f}};d.Clipper.prototype.FixHoleLinkage=function(a){if(null!==a.FirstLeft&&(a.IsHole==a.FirstLeft.IsHole||null===a.FirstLeft.Pts)){for(var b=a.FirstLeft;null!==b&&(b.IsHole==a.IsHole||null===b.Pts);)b=b.FirstLeft;a.FirstLeft=b}};d.Clipper.prototype.ExecuteInternal=function(){try{this.Reset();if(null===this.m_CurrentLM)return!1;var a=this.PopScanbeam();do{this.InsertLocalMinimaIntoAEL(a);d.Clear(this.m_GhostJoins);this.ProcessHorizontals(!1);if(null===this.m_Scanbeam)break;var b=this.PopScanbeam();
if(!this.ProcessIntersections(a,b))return!1;this.ProcessEdgesAtTopOfScanbeam(b);a=b}while(null!==this.m_Scanbeam||null!==this.m_CurrentLM);for(var a=0,c=this.m_PolyOuts.length;a<c;a++){var e=this.m_PolyOuts[a];null===e.Pts||e.IsOpen||(e.IsHole^this.ReverseSolution)==0<this.Area(e)&&this.ReversePolyPtLinks(e.Pts)}this.JoinCommonEdges();a=0;for(c=this.m_PolyOuts.length;a<c;a++)e=this.m_PolyOuts[a],null===e.Pts||e.IsOpen||this.FixupOutPolygon(e);this.StrictlySimple&&this.DoSimplePolygons();return!0}finally{d.Clear(this.m_Joins),
d.Clear(this.m_GhostJoins)}};d.Clipper.prototype.PopScanbeam=function(){var a=this.m_Scanbeam.Y;this.m_Scanbeam=this.m_Scanbeam.Next;return a};d.Clipper.prototype.DisposeAllPolyPts=function(){for(var a=0,b=this.m_PolyOuts.length;a<b;++a)this.DisposeOutRec(a);d.Clear(this.m_PolyOuts)};d.Clipper.prototype.DisposeOutRec=function(a){var b=this.m_PolyOuts[a];null!==b.Pts&&this.DisposeOutPts(b.Pts);this.m_PolyOuts[a]=null};d.Clipper.prototype.DisposeOutPts=function(a){if(null!==a)for(a.Prev.Next=null;null!==
a;)a=a.Next};d.Clipper.prototype.AddJoin=function(a,b,c){var e=new d.Join;e.OutPt1=a;e.OutPt2=b;e.OffPt.X=c.X;e.OffPt.Y=c.Y;this.m_Joins.push(e)};d.Clipper.prototype.AddGhostJoin=function(a,b){var c=new d.Join;c.OutPt1=a;c.OffPt.X=b.X;c.OffPt.Y=b.Y;this.m_GhostJoins.push(c)};d.Clipper.prototype.InsertLocalMinimaIntoAEL=function(a){for(;null!==this.m_CurrentLM&&this.m_CurrentLM.Y==a;){var b=this.m_CurrentLM.LeftBound,c=this.m_CurrentLM.RightBound;this.PopLocalMinima();var e=null;null===b?(this.InsertEdgeIntoAEL(c,
null),this.SetWindingCount(c),this.IsContributing(c)&&(e=this.AddOutPt(c,c.Bot))):(null==c?(this.InsertEdgeIntoAEL(b,null),this.SetWindingCount(b),this.IsContributing(b)&&(e=this.AddOutPt(b,b.Bot))):(this.InsertEdgeIntoAEL(b,null),this.InsertEdgeIntoAEL(c,b),this.SetWindingCount(b),c.WindCnt=b.WindCnt,c.WindCnt2=b.WindCnt2,this.IsContributing(b)&&(e=this.AddLocalMinPoly(b,c,b.Bot))),this.InsertScanbeam(b.Top.Y));null!=c&&(d.ClipperBase.IsHorizontal(c)?this.AddEdgeToSEL(c):this.InsertScanbeam(c.Top.Y));
if(null!=b&&null!=c){if(null!==e&&d.ClipperBase.IsHorizontal(c)&&0<this.m_GhostJoins.length&&0!==c.WindDelta)for(var f=0,g=this.m_GhostJoins.length;f<g;f++){var h=this.m_GhostJoins[f];this.HorzSegmentsOverlap(h.OutPt1.Pt,h.OffPt,c.Bot,c.Top)&&this.AddJoin(h.OutPt1,e,h.OffPt)}0<=b.OutIdx&&null!==b.PrevInAEL&&b.PrevInAEL.Curr.X==b.Bot.X&&0<=b.PrevInAEL.OutIdx&&d.ClipperBase.SlopesEqual(b.PrevInAEL,b,this.m_UseFullRange)&&0!==b.WindDelta&&0!==b.PrevInAEL.WindDelta&&(f=this.AddOutPt(b.PrevInAEL,b.Bot),
this.AddJoin(e,f,b.Top));if(b.NextInAEL!=c&&(0<=c.OutIdx&&0<=c.PrevInAEL.OutIdx&&d.ClipperBase.SlopesEqual(c.PrevInAEL,c,this.m_UseFullRange)&&0!==c.WindDelta&&0!==c.PrevInAEL.WindDelta&&(f=this.AddOutPt(c.PrevInAEL,c.Bot),this.AddJoin(e,f,c.Top)),e=b.NextInAEL,null!==e))for(;e!=c;)this.IntersectEdges(c,e,b.Curr,!1),e=e.NextInAEL}}};d.Clipper.prototype.InsertEdgeIntoAEL=function(a,b){if(null===this.m_ActiveEdges)a.PrevInAEL=null,a.NextInAEL=null,this.m_ActiveEdges=a;else if(null===b&&this.E2InsertsBeforeE1(this.m_ActiveEdges,
a))a.PrevInAEL=null,a.NextInAEL=this.m_ActiveEdges,this.m_ActiveEdges=this.m_ActiveEdges.PrevInAEL=a;else{null===b&&(b=this.m_ActiveEdges);for(;null!==b.NextInAEL&&!this.E2InsertsBeforeE1(b.NextInAEL,a);)b=b.NextInAEL;a.NextInAEL=b.NextInAEL;null!==b.NextInAEL&&(b.NextInAEL.PrevInAEL=a);a.PrevInAEL=b;b.NextInAEL=a}};d.Clipper.prototype.E2InsertsBeforeE1=function(a,b){return b.Curr.X==a.Curr.X?b.Top.Y>a.Top.Y?b.Top.X<d.Clipper.TopX(a,b.Top.Y):a.Top.X>d.Clipper.TopX(b,a.Top.Y):b.Curr.X<a.Curr.X};d.Clipper.prototype.IsEvenOddFillType=
function(a){return a.PolyTyp==d.PolyType.ptSubject?this.m_SubjFillType==d.PolyFillType.pftEvenOdd:this.m_ClipFillType==d.PolyFillType.pftEvenOdd};d.Clipper.prototype.IsEvenOddAltFillType=function(a){return a.PolyTyp==d.PolyType.ptSubject?this.m_ClipFillType==d.PolyFillType.pftEvenOdd:this.m_SubjFillType==d.PolyFillType.pftEvenOdd};d.Clipper.prototype.IsContributing=function(a){var b,c;a.PolyTyp==d.PolyType.ptSubject?(b=this.m_SubjFillType,c=this.m_ClipFillType):(b=this.m_ClipFillType,c=this.m_SubjFillType);
switch(b){case d.PolyFillType.pftEvenOdd:if(0===a.WindDelta&&1!=a.WindCnt)return!1;break;case d.PolyFillType.pftNonZero:if(1!=Math.abs(a.WindCnt))return!1;break;case d.PolyFillType.pftPositive:if(1!=a.WindCnt)return!1;break;default:if(-1!=a.WindCnt)return!1}switch(this.m_ClipType){case d.ClipType.ctIntersection:switch(c){case d.PolyFillType.pftEvenOdd:case d.PolyFillType.pftNonZero:return 0!==a.WindCnt2;case d.PolyFillType.pftPositive:return 0<a.WindCnt2;default:return 0>a.WindCnt2}case d.ClipType.ctUnion:switch(c){case d.PolyFillType.pftEvenOdd:case d.PolyFillType.pftNonZero:return 0===
a.WindCnt2;case d.PolyFillType.pftPositive:return 0>=a.WindCnt2;default:return 0<=a.WindCnt2}case d.ClipType.ctDifference:if(a.PolyTyp==d.PolyType.ptSubject)switch(c){case d.PolyFillType.pftEvenOdd:case d.PolyFillType.pftNonZero:return 0===a.WindCnt2;case d.PolyFillType.pftPositive:return 0>=a.WindCnt2;default:return 0<=a.WindCnt2}else switch(c){case d.PolyFillType.pftEvenOdd:case d.PolyFillType.pftNonZero:return 0!==a.WindCnt2;case d.PolyFillType.pftPositive:return 0<a.WindCnt2;default:return 0>
a.WindCnt2}case d.ClipType.ctXor:if(0===a.WindDelta)switch(c){case d.PolyFillType.pftEvenOdd:case d.PolyFillType.pftNonZero:return 0===a.WindCnt2;case d.PolyFillType.pftPositive:return 0>=a.WindCnt2;default:return 0<=a.WindCnt2}}return!0};d.Clipper.prototype.SetWindingCount=function(a){for(var b=a.PrevInAEL;null!==b&&(b.PolyTyp!=a.PolyTyp||0===b.WindDelta);)b=b.PrevInAEL;if(null===b)a.WindCnt=0===a.WindDelta?1:a.WindDelta,a.WindCnt2=0,b=this.m_ActiveEdges;else{if(0===a.WindDelta&&this.m_ClipType!=
d.ClipType.ctUnion)a.WindCnt=1;else if(this.IsEvenOddFillType(a))if(0===a.WindDelta){for(var c=!0,e=b.PrevInAEL;null!==e;)e.PolyTyp==b.PolyTyp&&0!==e.WindDelta&&(c=!c),e=e.PrevInAEL;a.WindCnt=c?0:1}else a.WindCnt=a.WindDelta;else 0>b.WindCnt*b.WindDelta?1<Math.abs(b.WindCnt)?a.WindCnt=0>b.WindDelta*a.WindDelta?b.WindCnt:b.WindCnt+a.WindDelta:a.WindCnt=0===a.WindDelta?1:a.WindDelta:a.WindCnt=0===a.WindDelta?0>b.WindCnt?b.WindCnt-1:b.WindCnt+1:0>b.WindDelta*a.WindDelta?b.WindCnt:b.WindCnt+a.WindDelta;
a.WindCnt2=b.WindCnt2;b=b.NextInAEL}if(this.IsEvenOddAltFillType(a))for(;b!=a;)0!==b.WindDelta&&(a.WindCnt2=0===a.WindCnt2?1:0),b=b.NextInAEL;else for(;b!=a;)a.WindCnt2+=b.WindDelta,b=b.NextInAEL};d.Clipper.prototype.AddEdgeToSEL=function(a){null===this.m_SortedEdges?(this.m_SortedEdges=a,a.PrevInSEL=null,a.NextInSEL=null):(a.NextInSEL=this.m_SortedEdges,a.PrevInSEL=null,this.m_SortedEdges=this.m_SortedEdges.PrevInSEL=a)};d.Clipper.prototype.CopyAELToSEL=function(){var a=this.m_ActiveEdges;for(this.m_SortedEdges=
a;null!==a;)a.PrevInSEL=a.PrevInAEL,a=a.NextInSEL=a.NextInAEL};d.Clipper.prototype.SwapPositionsInAEL=function(a,b){if(a.NextInAEL!=a.PrevInAEL&&b.NextInAEL!=b.PrevInAEL){if(a.NextInAEL==b){var c=b.NextInAEL;null!==c&&(c.PrevInAEL=a);var e=a.PrevInAEL;null!==e&&(e.NextInAEL=b);b.PrevInAEL=e;b.NextInAEL=a;a.PrevInAEL=b;a.NextInAEL=c}else b.NextInAEL==a?(c=a.NextInAEL,null!==c&&(c.PrevInAEL=b),e=b.PrevInAEL,null!==e&&(e.NextInAEL=a),a.PrevInAEL=e,a.NextInAEL=b,b.PrevInAEL=a,b.NextInAEL=c):(c=a.NextInAEL,
e=a.PrevInAEL,a.NextInAEL=b.NextInAEL,null!==a.NextInAEL&&(a.NextInAEL.PrevInAEL=a),a.PrevInAEL=b.PrevInAEL,null!==a.PrevInAEL&&(a.PrevInAEL.NextInAEL=a),b.NextInAEL=c,null!==b.NextInAEL&&(b.NextInAEL.PrevInAEL=b),b.PrevInAEL=e,null!==b.PrevInAEL&&(b.PrevInAEL.NextInAEL=b));null===a.PrevInAEL?this.m_ActiveEdges=a:null===b.PrevInAEL&&(this.m_ActiveEdges=b)}};d.Clipper.prototype.SwapPositionsInSEL=function(a,b){if(null!==a.NextInSEL||null!==a.PrevInSEL)if(null!==b.NextInSEL||null!==b.PrevInSEL){if(a.NextInSEL==
b){var c=b.NextInSEL;null!==c&&(c.PrevInSEL=a);var e=a.PrevInSEL;null!==e&&(e.NextInSEL=b);b.PrevInSEL=e;b.NextInSEL=a;a.PrevInSEL=b;a.NextInSEL=c}else b.NextInSEL==a?(c=a.NextInSEL,null!==c&&(c.PrevInSEL=b),e=b.PrevInSEL,null!==e&&(e.NextInSEL=a),a.PrevInSEL=e,a.NextInSEL=b,b.PrevInSEL=a,b.NextInSEL=c):(c=a.NextInSEL,e=a.PrevInSEL,a.NextInSEL=b.NextInSEL,null!==a.NextInSEL&&(a.NextInSEL.PrevInSEL=a),a.PrevInSEL=b.PrevInSEL,null!==a.PrevInSEL&&(a.PrevInSEL.NextInSEL=a),b.NextInSEL=c,null!==b.NextInSEL&&
(b.NextInSEL.PrevInSEL=b),b.PrevInSEL=e,null!==b.PrevInSEL&&(b.PrevInSEL.NextInSEL=b));null===a.PrevInSEL?this.m_SortedEdges=a:null===b.PrevInSEL&&(this.m_SortedEdges=b)}};d.Clipper.prototype.AddLocalMaxPoly=function(a,b,c){this.AddOutPt(a,c);0==b.WindDelta&&this.AddOutPt(b,c);a.OutIdx==b.OutIdx?(a.OutIdx=-1,b.OutIdx=-1):a.OutIdx<b.OutIdx?this.AppendPolygon(a,b):this.AppendPolygon(b,a)};d.Clipper.prototype.AddLocalMinPoly=function(a,b,c){var e,f;d.ClipperBase.IsHorizontal(b)||a.Dx>b.Dx?(e=this.AddOutPt(a,
c),b.OutIdx=a.OutIdx,a.Side=d.EdgeSide.esLeft,b.Side=d.EdgeSide.esRight,f=a,a=f.PrevInAEL==b?b.PrevInAEL:f.PrevInAEL):(e=this.AddOutPt(b,c),a.OutIdx=b.OutIdx,a.Side=d.EdgeSide.esRight,b.Side=d.EdgeSide.esLeft,f=b,a=f.PrevInAEL==a?a.PrevInAEL:f.PrevInAEL);null!==a&&0<=a.OutIdx&&d.Clipper.TopX(a,c.Y)==d.Clipper.TopX(f,c.Y)&&d.ClipperBase.SlopesEqual(f,a,this.m_UseFullRange)&&0!==f.WindDelta&&0!==a.WindDelta&&(c=this.AddOutPt(a,c),this.AddJoin(e,c,f.Top));return e};d.Clipper.prototype.CreateOutRec=function(){var a=
new d.OutRec;a.Idx=-1;a.IsHole=!1;a.IsOpen=!1;a.FirstLeft=null;a.Pts=null;a.BottomPt=null;a.PolyNode=null;this.m_PolyOuts.push(a);a.Idx=this.m_PolyOuts.length-1;return a};d.Clipper.prototype.AddOutPt=function(a,b){var c=a.Side==d.EdgeSide.esLeft;if(0>a.OutIdx){var e=this.CreateOutRec();e.IsOpen=0===a.WindDelta;var f=new d.OutPt;e.Pts=f;f.Idx=e.Idx;f.Pt.X=b.X;f.Pt.Y=b.Y;f.Next=f;f.Prev=f;e.IsOpen||this.SetHoleState(a,e);a.OutIdx=e.Idx}else{var e=this.m_PolyOuts[a.OutIdx],g=e.Pts;if(c&&d.IntPoint.op_Equality(b,
g.Pt))return g;if(!c&&d.IntPoint.op_Equality(b,g.Prev.Pt))return g.Prev;f=new d.OutPt;f.Idx=e.Idx;f.Pt.X=b.X;f.Pt.Y=b.Y;f.Next=g;f.Prev=g.Prev;f.Prev.Next=f;g.Prev=f;c&&(e.Pts=f)}return f};d.Clipper.prototype.SwapPoints=function(a,b){var c=new d.IntPoint(a.Value);a.Value.X=b.Value.X;a.Value.Y=b.Value.Y;b.Value.X=c.X;b.Value.Y=c.Y};d.Clipper.prototype.HorzSegmentsOverlap=function(a,b,c,e){return a.X>c.X==a.X<e.X?!0:b.X>c.X==b.X<e.X?!0:c.X>a.X==c.X<b.X?!0:e.X>a.X==e.X<b.X?!0:a.X==c.X&&b.X==e.X?!0:a.X==
e.X&&b.X==c.X?!0:!1};d.Clipper.prototype.InsertPolyPtBetween=function(a,b,c){var e=new d.OutPt;e.Pt.X=c.X;e.Pt.Y=c.Y;b==a.Next?(a.Next=e,b.Prev=e,e.Next=b,e.Prev=a):(b.Next=e,a.Prev=e,e.Next=a,e.Prev=b);return e};d.Clipper.prototype.SetHoleState=function(a,b){for(var c=!1,e=a.PrevInAEL;null!==e;)0<=e.OutIdx&&0!=e.WindDelta&&(c=!c,null===b.FirstLeft&&(b.FirstLeft=this.m_PolyOuts[e.OutIdx])),e=e.PrevInAEL;c&&(b.IsHole=!0)};d.Clipper.prototype.GetDx=function(a,b){return a.Y==b.Y?d.ClipperBase.horizontal:
(b.X-a.X)/(b.Y-a.Y)};d.Clipper.prototype.FirstIsBottomPt=function(a,b){for(var c=a.Prev;d.IntPoint.op_Equality(c.Pt,a.Pt)&&c!=a;)c=c.Prev;for(var e=Math.abs(this.GetDx(a.Pt,c.Pt)),c=a.Next;d.IntPoint.op_Equality(c.Pt,a.Pt)&&c!=a;)c=c.Next;for(var f=Math.abs(this.GetDx(a.Pt,c.Pt)),c=b.Prev;d.IntPoint.op_Equality(c.Pt,b.Pt)&&c!=b;)c=c.Prev;for(var g=Math.abs(this.GetDx(b.Pt,c.Pt)),c=b.Next;d.IntPoint.op_Equality(c.Pt,b.Pt)&&c!=b;)c=c.Next;c=Math.abs(this.GetDx(b.Pt,c.Pt));return e>=g&&e>=c||f>=g&&f>=
c};d.Clipper.prototype.GetBottomPt=function(a){for(var b=null,c=a.Next;c!=a;)c.Pt.Y>a.Pt.Y?(a=c,b=null):c.Pt.Y==a.Pt.Y&&c.Pt.X<=a.Pt.X&&(c.Pt.X<a.Pt.X?(b=null,a=c):c.Next!=a&&c.Prev!=a&&(b=c)),c=c.Next;if(null!==b)for(;b!=c;)for(this.FirstIsBottomPt(c,b)||(a=b),b=b.Next;d.IntPoint.op_Inequality(b.Pt,a.Pt);)b=b.Next;return a};d.Clipper.prototype.GetLowermostRec=function(a,b){null===a.BottomPt&&(a.BottomPt=this.GetBottomPt(a.Pts));null===b.BottomPt&&(b.BottomPt=this.GetBottomPt(b.Pts));var c=a.BottomPt,
e=b.BottomPt;return c.Pt.Y>e.Pt.Y?a:c.Pt.Y<e.Pt.Y?b:c.Pt.X<e.Pt.X?a:c.Pt.X>e.Pt.X?b:c.Next==c?b:e.Next==e?a:this.FirstIsBottomPt(c,e)?a:b};d.Clipper.prototype.Param1RightOfParam2=function(a,b){do if(a=a.FirstLeft,a==b)return!0;while(null!==a);return!1};d.Clipper.prototype.GetOutRec=function(a){for(a=this.m_PolyOuts[a];a!=this.m_PolyOuts[a.Idx];)a=this.m_PolyOuts[a.Idx];return a};d.Clipper.prototype.AppendPolygon=function(a,b){var c=this.m_PolyOuts[a.OutIdx],e=this.m_PolyOuts[b.OutIdx],f;f=this.Param1RightOfParam2(c,
e)?e:this.Param1RightOfParam2(e,c)?c:this.GetLowermostRec(c,e);var g=c.Pts,h=g.Prev,l=e.Pts,k=l.Prev;a.Side==d.EdgeSide.esLeft?(b.Side==d.EdgeSide.esLeft?(this.ReversePolyPtLinks(l),l.Next=g,g.Prev=l,h.Next=k,k.Prev=h,c.Pts=k):(k.Next=g,g.Prev=k,l.Prev=h,h.Next=l,c.Pts=l),g=d.EdgeSide.esLeft):(b.Side==d.EdgeSide.esRight?(this.ReversePolyPtLinks(l),h.Next=k,k.Prev=h,l.Next=g,g.Prev=l):(h.Next=l,l.Prev=h,g.Prev=k,k.Next=g),g=d.EdgeSide.esRight);c.BottomPt=null;f==e&&(e.FirstLeft!=c&&(c.FirstLeft=e.FirstLeft),
c.IsHole=e.IsHole);e.Pts=null;e.BottomPt=null;e.FirstLeft=c;f=a.OutIdx;h=b.OutIdx;a.OutIdx=-1;b.OutIdx=-1;for(l=this.m_ActiveEdges;null!==l;){if(l.OutIdx==h){l.OutIdx=f;l.Side=g;break}l=l.NextInAEL}e.Idx=c.Idx};d.Clipper.prototype.ReversePolyPtLinks=function(a){if(null!==a){var b,c;b=a;do c=b.Next,b.Next=b.Prev,b=b.Prev=c;while(b!=a)}};d.Clipper.SwapSides=function(a,b){var c=a.Side;a.Side=b.Side;b.Side=c};d.Clipper.SwapPolyIndexes=function(a,b){var c=a.OutIdx;a.OutIdx=b.OutIdx;b.OutIdx=c};d.Clipper.prototype.IntersectEdges=
function(a,b,c,e){var f=!e&&null===a.NextInLML&&a.Top.X==c.X&&a.Top.Y==c.Y;e=!e&&null===b.NextInLML&&b.Top.X==c.X&&b.Top.Y==c.Y;var g=0<=a.OutIdx,h=0<=b.OutIdx;if(0===a.WindDelta||0===b.WindDelta)0===a.WindDelta&&0===b.WindDelta?(f||e)&&g&&h&&this.AddLocalMaxPoly(a,b,c):a.PolyTyp==b.PolyTyp&&a.WindDelta!=b.WindDelta&&this.m_ClipType==d.ClipType.ctUnion?0===a.WindDelta?h&&(this.AddOutPt(a,c),g&&(a.OutIdx=-1)):g&&(this.AddOutPt(b,c),h&&(b.OutIdx=-1)):a.PolyTyp!=b.PolyTyp&&(0!==a.WindDelta||1!=Math.abs(b.WindCnt)||
this.m_ClipType==d.ClipType.ctUnion&&0!==b.WindCnt2?0!==b.WindDelta||1!=Math.abs(a.WindCnt)||this.m_ClipType==d.ClipType.ctUnion&&0!==a.WindCnt2||(this.AddOutPt(b,c),h&&(b.OutIdx=-1)):(this.AddOutPt(a,c),g&&(a.OutIdx=-1))),f&&(0>a.OutIdx?this.DeleteFromAEL(a):d.Error("Error intersecting polylines")),e&&(0>b.OutIdx?this.DeleteFromAEL(b):d.Error("Error intersecting polylines"));else{if(a.PolyTyp==b.PolyTyp)if(this.IsEvenOddFillType(a)){var l=a.WindCnt;a.WindCnt=b.WindCnt;b.WindCnt=l}else a.WindCnt=
0===a.WindCnt+b.WindDelta?-a.WindCnt:a.WindCnt+b.WindDelta,b.WindCnt=0===b.WindCnt-a.WindDelta?-b.WindCnt:b.WindCnt-a.WindDelta;else this.IsEvenOddFillType(b)?a.WindCnt2=0===a.WindCnt2?1:0:a.WindCnt2+=b.WindDelta,this.IsEvenOddFillType(a)?b.WindCnt2=0===b.WindCnt2?1:0:b.WindCnt2-=a.WindDelta;var k,n,m;a.PolyTyp==d.PolyType.ptSubject?(k=this.m_SubjFillType,m=this.m_ClipFillType):(k=this.m_ClipFillType,m=this.m_SubjFillType);b.PolyTyp==d.PolyType.ptSubject?(n=this.m_SubjFillType,l=this.m_ClipFillType):
(n=this.m_ClipFillType,l=this.m_SubjFillType);switch(k){case d.PolyFillType.pftPositive:k=a.WindCnt;break;case d.PolyFillType.pftNegative:k=-a.WindCnt;break;default:k=Math.abs(a.WindCnt)}switch(n){case d.PolyFillType.pftPositive:n=b.WindCnt;break;case d.PolyFillType.pftNegative:n=-b.WindCnt;break;default:n=Math.abs(b.WindCnt)}if(g&&h)f||e||0!==k&&1!=k||0!==n&&1!=n||a.PolyTyp!=b.PolyTyp&&this.m_ClipType!=d.ClipType.ctXor?this.AddLocalMaxPoly(a,b,c):(this.AddOutPt(a,c),this.AddOutPt(b,c),d.Clipper.SwapSides(a,
b),d.Clipper.SwapPolyIndexes(a,b));else if(g){if(0===n||1==n)this.AddOutPt(a,c),d.Clipper.SwapSides(a,b),d.Clipper.SwapPolyIndexes(a,b)}else if(h){if(0===k||1==k)this.AddOutPt(b,c),d.Clipper.SwapSides(a,b),d.Clipper.SwapPolyIndexes(a,b)}else if(!(0!==k&&1!=k||0!==n&&1!=n||f||e)){switch(m){case d.PolyFillType.pftPositive:g=a.WindCnt2;break;case d.PolyFillType.pftNegative:g=-a.WindCnt2;break;default:g=Math.abs(a.WindCnt2)}switch(l){case d.PolyFillType.pftPositive:h=b.WindCnt2;break;case d.PolyFillType.pftNegative:h=
-b.WindCnt2;break;default:h=Math.abs(b.WindCnt2)}if(a.PolyTyp!=b.PolyTyp)this.AddLocalMinPoly(a,b,c);else if(1==k&&1==n)switch(this.m_ClipType){case d.ClipType.ctIntersection:0<g&&0<h&&this.AddLocalMinPoly(a,b,c);break;case d.ClipType.ctUnion:0>=g&&0>=h&&this.AddLocalMinPoly(a,b,c);break;case d.ClipType.ctDifference:(a.PolyTyp==d.PolyType.ptClip&&0<g&&0<h||a.PolyTyp==d.PolyType.ptSubject&&0>=g&&0>=h)&&this.AddLocalMinPoly(a,b,c);break;case d.ClipType.ctXor:this.AddLocalMinPoly(a,b,c)}else d.Clipper.SwapSides(a,
b)}f!=e&&(f&&0<=a.OutIdx||e&&0<=b.OutIdx)&&(d.Clipper.SwapSides(a,b),d.Clipper.SwapPolyIndexes(a,b));f&&this.DeleteFromAEL(a);e&&this.DeleteFromAEL(b)}};d.Clipper.prototype.DeleteFromAEL=function(a){var b=a.PrevInAEL,c=a.NextInAEL;if(null!==b||null!==c||a==this.m_ActiveEdges)null!==b?b.NextInAEL=c:this.m_ActiveEdges=c,null!==c&&(c.PrevInAEL=b),a.NextInAEL=null,a.PrevInAEL=null};d.Clipper.prototype.DeleteFromSEL=function(a){var b=a.PrevInSEL,c=a.NextInSEL;if(null!==b||null!==c||a==this.m_SortedEdges)null!==
b?b.NextInSEL=c:this.m_SortedEdges=c,null!==c&&(c.PrevInSEL=b),a.NextInSEL=null,a.PrevInSEL=null};d.Clipper.prototype.UpdateEdgeIntoAEL=function(a){null===a.NextInLML&&d.Error("UpdateEdgeIntoAEL: invalid call");var b=a.PrevInAEL,c=a.NextInAEL;a.NextInLML.OutIdx=a.OutIdx;null!==b?b.NextInAEL=a.NextInLML:this.m_ActiveEdges=a.NextInLML;null!==c&&(c.PrevInAEL=a.NextInLML);a.NextInLML.Side=a.Side;a.NextInLML.WindDelta=a.WindDelta;a.NextInLML.WindCnt=a.WindCnt;a.NextInLML.WindCnt2=a.WindCnt2;a=a.NextInLML;
a.Curr.X=a.Bot.X;a.Curr.Y=a.Bot.Y;a.PrevInAEL=b;a.NextInAEL=c;d.ClipperBase.IsHorizontal(a)||this.InsertScanbeam(a.Top.Y);return a};d.Clipper.prototype.ProcessHorizontals=function(a){for(var b=this.m_SortedEdges;null!==b;)this.DeleteFromSEL(b),this.ProcessHorizontal(b,a),b=this.m_SortedEdges};d.Clipper.prototype.GetHorzDirection=function(a,b){a.Bot.X<a.Top.X?(b.Left=a.Bot.X,b.Right=a.Top.X,b.Dir=d.Direction.dLeftToRight):(b.Left=a.Top.X,b.Right=a.Bot.X,b.Dir=d.Direction.dRightToLeft)};d.Clipper.prototype.PrepareHorzJoins=
function(a,b){var c=this.m_PolyOuts[a.OutIdx].Pts;a.Side!=d.EdgeSide.esLeft&&(c=c.Prev);b&&(d.IntPoint.op_Equality(c.Pt,a.Top)?this.AddGhostJoin(c,a.Bot):this.AddGhostJoin(c,a.Top))};d.Clipper.prototype.ProcessHorizontal=function(a,b){var c={Dir:null,Left:null,Right:null};this.GetHorzDirection(a,c);for(var e=c.Dir,f=c.Left,g=c.Right,h=a,l=null;null!==h.NextInLML&&d.ClipperBase.IsHorizontal(h.NextInLML);)h=h.NextInLML;for(null===h.NextInLML&&(l=this.GetMaximaPair(h));;){for(var k=a==h,n=this.GetNextInAEL(a,
e);null!==n&&!(n.Curr.X==a.Top.X&&null!==a.NextInLML&&n.Dx<a.NextInLML.Dx);){c=this.GetNextInAEL(n,e);if(e==d.Direction.dLeftToRight&&n.Curr.X<=g||e==d.Direction.dRightToLeft&&n.Curr.X>=f){0<=a.OutIdx&&0!=a.WindDelta&&this.PrepareHorzJoins(a,b);if(n==l&&k){e==d.Direction.dLeftToRight?this.IntersectEdges(a,n,n.Top,!1):this.IntersectEdges(n,a,n.Top,!1);0<=l.OutIdx&&d.Error("ProcessHorizontal error");return}if(e==d.Direction.dLeftToRight){var m=new d.IntPoint(n.Curr.X,a.Curr.Y);this.IntersectEdges(a,
n,m,!0)}else m=new d.IntPoint(n.Curr.X,a.Curr.Y),this.IntersectEdges(n,a,m,!0);this.SwapPositionsInAEL(a,n)}else if(e==d.Direction.dLeftToRight&&n.Curr.X>=g||e==d.Direction.dRightToLeft&&n.Curr.X<=f)break;n=c}0<=a.OutIdx&&0!==a.WindDelta&&this.PrepareHorzJoins(a,b);if(null!==a.NextInLML&&d.ClipperBase.IsHorizontal(a.NextInLML))a=this.UpdateEdgeIntoAEL(a),0<=a.OutIdx&&this.AddOutPt(a,a.Bot),c={Dir:e,Left:f,Right:g},this.GetHorzDirection(a,c),e=c.Dir,f=c.Left,g=c.Right;else break}null!==a.NextInLML?
0<=a.OutIdx?(e=this.AddOutPt(a,a.Top),a=this.UpdateEdgeIntoAEL(a),0!==a.WindDelta&&(f=a.PrevInAEL,c=a.NextInAEL,null!==f&&f.Curr.X==a.Bot.X&&f.Curr.Y==a.Bot.Y&&0!==f.WindDelta&&0<=f.OutIdx&&f.Curr.Y>f.Top.Y&&d.ClipperBase.SlopesEqual(a,f,this.m_UseFullRange)?(c=this.AddOutPt(f,a.Bot),this.AddJoin(e,c,a.Top)):null!==c&&c.Curr.X==a.Bot.X&&c.Curr.Y==a.Bot.Y&&0!==c.WindDelta&&0<=c.OutIdx&&c.Curr.Y>c.Top.Y&&d.ClipperBase.SlopesEqual(a,c,this.m_UseFullRange)&&(c=this.AddOutPt(c,a.Bot),this.AddJoin(e,c,
a.Top)))):this.UpdateEdgeIntoAEL(a):null!==l?0<=l.OutIdx?(e==d.Direction.dLeftToRight?this.IntersectEdges(a,l,a.Top,!1):this.IntersectEdges(l,a,a.Top,!1),0<=l.OutIdx&&d.Error("ProcessHorizontal error")):(this.DeleteFromAEL(a),this.DeleteFromAEL(l)):(0<=a.OutIdx&&this.AddOutPt(a,a.Top),this.DeleteFromAEL(a))};d.Clipper.prototype.GetNextInAEL=function(a,b){return b==d.Direction.dLeftToRight?a.NextInAEL:a.PrevInAEL};d.Clipper.prototype.IsMinima=function(a){return null!==a&&a.Prev.NextInLML!=a&&a.Next.NextInLML!=
a};d.Clipper.prototype.IsMaxima=function(a,b){return null!==a&&a.Top.Y==b&&null===a.NextInLML};d.Clipper.prototype.IsIntermediate=function(a,b){return a.Top.Y==b&&null!==a.NextInLML};d.Clipper.prototype.GetMaximaPair=function(a){var b=null;d.IntPoint.op_Equality(a.Next.Top,a.Top)&&null===a.Next.NextInLML?b=a.Next:d.IntPoint.op_Equality(a.Prev.Top,a.Top)&&null===a.Prev.NextInLML&&(b=a.Prev);return null===b||-2!=b.OutIdx&&(b.NextInAEL!=b.PrevInAEL||d.ClipperBase.IsHorizontal(b))?b:null};d.Clipper.prototype.ProcessIntersections=
function(a,b){if(null==this.m_ActiveEdges)return!0;try{this.BuildIntersectList(a,b);if(0==this.m_IntersectList.length)return!0;if(1==this.m_IntersectList.length||this.FixupIntersectionOrder())this.ProcessIntersectList();else return!1}catch(c){this.m_SortedEdges=null,this.m_IntersectList.length=0,d.Error("ProcessIntersections error")}this.m_SortedEdges=null;return!0};d.Clipper.prototype.BuildIntersectList=function(a,b){if(null!==this.m_ActiveEdges){var c=this.m_ActiveEdges;for(this.m_SortedEdges=c;null!==
c;)c.PrevInSEL=c.PrevInAEL,c.NextInSEL=c.NextInAEL,c.Curr.X=d.Clipper.TopX(c,b),c=c.NextInAEL;for(var e=!0;e&&null!==this.m_SortedEdges;){e=!1;for(c=this.m_SortedEdges;null!==c.NextInSEL;){var f=c.NextInSEL,g=new d.IntPoint;c.Curr.X>f.Curr.X?(!this.IntersectPoint(c,f,g)&&c.Curr.X>f.Curr.X+1&&d.Error("Intersection error"),g.Y>a&&(g.Y=a,Math.abs(c.Dx)>Math.abs(f.Dx)?g.X=d.Clipper.TopX(f,a):g.X=d.Clipper.TopX(c,a)),e=new d.IntersectNode,e.Edge1=c,e.Edge2=f,e.Pt.X=g.X,e.Pt.Y=g.Y,this.m_IntersectList.push(e),
this.SwapPositionsInSEL(c,f),e=!0):c=f}if(null!==c.PrevInSEL)c.PrevInSEL.NextInSEL=null;else break}this.m_SortedEdges=null}};d.Clipper.prototype.EdgesAdjacent=function(a){return a.Edge1.NextInSEL==a.Edge2||a.Edge1.PrevInSEL==a.Edge2};d.Clipper.IntersectNodeSort=function(a,b){return b.Pt.Y-a.Pt.Y};d.Clipper.prototype.FixupIntersectionOrder=function(){this.m_IntersectList.sort(this.m_IntersectNodeComparer);this.CopyAELToSEL();for(var a=this.m_IntersectList.length,b=0;b<a;b++){if(!this.EdgesAdjacent(this.m_IntersectList[b])){for(var c=
b+1;c<a&&!this.EdgesAdjacent(this.m_IntersectList[c]);)c++;if(c==a)return!1;var e=this.m_IntersectList[b];this.m_IntersectList[b]=this.m_IntersectList[c];this.m_IntersectList[c]=e}this.SwapPositionsInSEL(this.m_IntersectList[b].Edge1,this.m_IntersectList[b].Edge2)}return!0};d.Clipper.prototype.ProcessIntersectList=function(){for(var a=0,b=this.m_IntersectList.length;a<b;a++){var c=this.m_IntersectList[a];this.IntersectEdges(c.Edge1,c.Edge2,c.Pt,!0);this.SwapPositionsInAEL(c.Edge1,c.Edge2)}this.m_IntersectList.length=
0};E=function(a){return 0>a?Math.ceil(a-0.5):Math.round(a)};F=function(a){return 0>a?Math.ceil(a-0.5):Math.floor(a+0.5)};G=function(a){return 0>a?-Math.round(Math.abs(a)):Math.round(a)};H=function(a){if(0>a)return a-=0.5,-2147483648>a?Math.ceil(a):a|0;a+=0.5;return 2147483647<a?Math.floor(a):a|0};d.Clipper.Round=p?E:D?G:J?H:F;d.Clipper.TopX=function(a,b){return b==a.Top.Y?a.Top.X:a.Bot.X+d.Clipper.Round(a.Dx*(b-a.Bot.Y))};d.Clipper.prototype.IntersectPoint=function(a,b,c){c.X=0;c.Y=0;var e,f;if(d.ClipperBase.SlopesEqual(a,
b,this.m_UseFullRange)||a.Dx==b.Dx)return b.Bot.Y>a.Bot.Y?(c.X=b.Bot.X,c.Y=b.Bot.Y):(c.X=a.Bot.X,c.Y=a.Bot.Y),!1;if(0===a.Delta.X)c.X=a.Bot.X,d.ClipperBase.IsHorizontal(b)?c.Y=b.Bot.Y:(f=b.Bot.Y-b.Bot.X/b.Dx,c.Y=d.Clipper.Round(c.X/b.Dx+f));else if(0===b.Delta.X)c.X=b.Bot.X,d.ClipperBase.IsHorizontal(a)?c.Y=a.Bot.Y:(e=a.Bot.Y-a.Bot.X/a.Dx,c.Y=d.Clipper.Round(c.X/a.Dx+e));else{e=a.Bot.X-a.Bot.Y*a.Dx;f=b.Bot.X-b.Bot.Y*b.Dx;var g=(f-e)/(a.Dx-b.Dx);c.Y=d.Clipper.Round(g);Math.abs(a.Dx)<Math.abs(b.Dx)?
c.X=d.Clipper.Round(a.Dx*g+e):c.X=d.Clipper.Round(b.Dx*g+f)}if(c.Y<a.Top.Y||c.Y<b.Top.Y){if(a.Top.Y>b.Top.Y)return c.Y=a.Top.Y,c.X=d.Clipper.TopX(b,a.Top.Y),c.X<a.Top.X;c.Y=b.Top.Y;Math.abs(a.Dx)<Math.abs(b.Dx)?c.X=d.Clipper.TopX(a,c.Y):c.X=d.Clipper.TopX(b,c.Y)}return!0};d.Clipper.prototype.ProcessEdgesAtTopOfScanbeam=function(a){for(var b=this.m_ActiveEdges;null!==b;){var c=this.IsMaxima(b,a);c&&(c=this.GetMaximaPair(b),c=null===c||!d.ClipperBase.IsHorizontal(c));if(c){var e=b.PrevInAEL;this.DoMaxima(b);
b=null===e?this.m_ActiveEdges:e.NextInAEL}else this.IsIntermediate(b,a)&&d.ClipperBase.IsHorizontal(b.NextInLML)?(b=this.UpdateEdgeIntoAEL(b),0<=b.OutIdx&&this.AddOutPt(b,b.Bot),this.AddEdgeToSEL(b)):(b.Curr.X=d.Clipper.TopX(b,a),b.Curr.Y=a),this.StrictlySimple&&(e=b.PrevInAEL,0<=b.OutIdx&&0!==b.WindDelta&&null!==e&&0<=e.OutIdx&&e.Curr.X==b.Curr.X&&0!==e.WindDelta&&(c=this.AddOutPt(e,b.Curr),e=this.AddOutPt(b,b.Curr),this.AddJoin(c,e,b.Curr))),b=b.NextInAEL}this.ProcessHorizontals(!0);for(b=this.m_ActiveEdges;null!==
b;){if(this.IsIntermediate(b,a)){c=null;0<=b.OutIdx&&(c=this.AddOutPt(b,b.Top));var b=this.UpdateEdgeIntoAEL(b),e=b.PrevInAEL,f=b.NextInAEL;null!==e&&e.Curr.X==b.Bot.X&&e.Curr.Y==b.Bot.Y&&null!==c&&0<=e.OutIdx&&e.Curr.Y>e.Top.Y&&d.ClipperBase.SlopesEqual(b,e,this.m_UseFullRange)&&0!==b.WindDelta&&0!==e.WindDelta?(e=this.AddOutPt(e,b.Bot),this.AddJoin(c,e,b.Top)):null!==f&&f.Curr.X==b.Bot.X&&f.Curr.Y==b.Bot.Y&&null!==c&&0<=f.OutIdx&&f.Curr.Y>f.Top.Y&&d.ClipperBase.SlopesEqual(b,f,this.m_UseFullRange)&&
0!==b.WindDelta&&0!==f.WindDelta&&(e=this.AddOutPt(f,b.Bot),this.AddJoin(c,e,b.Top))}b=b.NextInAEL}};d.Clipper.prototype.DoMaxima=function(a){var b=this.GetMaximaPair(a);if(null===b)0<=a.OutIdx&&this.AddOutPt(a,a.Top),this.DeleteFromAEL(a);else{for(var c=a.NextInAEL;null!==c&&c!=b;)this.IntersectEdges(a,c,a.Top,!0),this.SwapPositionsInAEL(a,c),c=a.NextInAEL;-1==a.OutIdx&&-1==b.OutIdx?(this.DeleteFromAEL(a),this.DeleteFromAEL(b)):0<=a.OutIdx&&0<=b.OutIdx?this.IntersectEdges(a,b,a.Top,!1):0===a.WindDelta?
(0<=a.OutIdx&&(this.AddOutPt(a,a.Top),a.OutIdx=-1),this.DeleteFromAEL(a),0<=b.OutIdx&&(this.AddOutPt(b,a.Top),b.OutIdx=-1),this.DeleteFromAEL(b)):d.Error("DoMaxima error")}};d.Clipper.ReversePaths=function(a){for(var b=0,c=a.length;b<c;b++)a[b].reverse()};d.Clipper.Orientation=function(a){return 0<=d.Clipper.Area(a)};d.Clipper.prototype.PointCount=function(a){if(null===a)return 0;var b=0,c=a;do b++,c=c.Next;while(c!=a);return b};d.Clipper.prototype.BuildResult=function(a){d.Clear(a);for(var b=0,c=
this.m_PolyOuts.length;b<c;b++){var e=this.m_PolyOuts[b];if(null!==e.Pts){var e=e.Pts.Prev,f=this.PointCount(e);if(!(2>f)){for(var g=Array(f),h=0;h<f;h++)g[h]=e.Pt,e=e.Prev;a.push(g)}}}};d.Clipper.prototype.BuildResult2=function(a){a.Clear();for(var b=0,c=this.m_PolyOuts.length;b<c;b++){var e=this.m_PolyOuts[b],f=this.PointCount(e.Pts);if(!(e.IsOpen&&2>f||!e.IsOpen&&3>f)){this.FixHoleLinkage(e);var g=new d.PolyNode;a.m_AllPolys.push(g);e.PolyNode=g;g.m_polygon.length=f;for(var e=e.Pts.Prev,h=0;h<
f;h++)g.m_polygon[h]=e.Pt,e=e.Prev}}b=0;for(c=this.m_PolyOuts.length;b<c;b++)e=this.m_PolyOuts[b],null!==e.PolyNode&&(e.IsOpen?(e.PolyNode.IsOpen=!0,a.AddChild(e.PolyNode)):null!==e.FirstLeft&&null!=e.FirstLeft.PolyNode?e.FirstLeft.PolyNode.AddChild(e.PolyNode):a.AddChild(e.PolyNode))};d.Clipper.prototype.FixupOutPolygon=function(a){var b=null;a.BottomPt=null;for(var c=a.Pts;;){if(c.Prev==c||c.Prev==c.Next){this.DisposeOutPts(c);a.Pts=null;return}if(d.IntPoint.op_Equality(c.Pt,c.Next.Pt)||d.IntPoint.op_Equality(c.Pt,
c.Prev.Pt)||d.ClipperBase.SlopesEqual(c.Prev.Pt,c.Pt,c.Next.Pt,this.m_UseFullRange)&&(!this.PreserveCollinear||!this.Pt2IsBetweenPt1AndPt3(c.Prev.Pt,c.Pt,c.Next.Pt)))b=null,c.Prev.Next=c.Next,c=c.Next.Prev=c.Prev;else if(c==b)break;else null===b&&(b=c),c=c.Next}a.Pts=c};d.Clipper.prototype.DupOutPt=function(a,b){var c=new d.OutPt;c.Pt.X=a.Pt.X;c.Pt.Y=a.Pt.Y;c.Idx=a.Idx;b?(c.Next=a.Next,c.Prev=a,a.Next.Prev=c,a.Next=c):(c.Prev=a.Prev,c.Next=a,a.Prev.Next=c,a.Prev=c);return c};d.Clipper.prototype.GetOverlap=
function(a,b,c,e,d){a<b?c<e?(d.Left=Math.max(a,c),d.Right=Math.min(b,e)):(d.Left=Math.max(a,e),d.Right=Math.min(b,c)):c<e?(d.Left=Math.max(b,c),d.Right=Math.min(a,e)):(d.Left=Math.max(b,e),d.Right=Math.min(a,c));return d.Left<d.Right};d.Clipper.prototype.JoinHorz=function(a,b,c,e,f,g){var h=a.Pt.X>b.Pt.X?d.Direction.dRightToLeft:d.Direction.dLeftToRight;e=c.Pt.X>e.Pt.X?d.Direction.dRightToLeft:d.Direction.dLeftToRight;if(h==e)return!1;if(h==d.Direction.dLeftToRight){for(;a.Next.Pt.X<=f.X&&a.Next.Pt.X>=
a.Pt.X&&a.Next.Pt.Y==f.Y;)a=a.Next;g&&a.Pt.X!=f.X&&(a=a.Next);b=this.DupOutPt(a,!g);d.IntPoint.op_Inequality(b.Pt,f)&&(a=b,a.Pt.X=f.X,a.Pt.Y=f.Y,b=this.DupOutPt(a,!g))}else{for(;a.Next.Pt.X>=f.X&&a.Next.Pt.X<=a.Pt.X&&a.Next.Pt.Y==f.Y;)a=a.Next;g||a.Pt.X==f.X||(a=a.Next);b=this.DupOutPt(a,g);d.IntPoint.op_Inequality(b.Pt,f)&&(a=b,a.Pt.X=f.X,a.Pt.Y=f.Y,b=this.DupOutPt(a,g))}if(e==d.Direction.dLeftToRight){for(;c.Next.Pt.X<=f.X&&c.Next.Pt.X>=c.Pt.X&&c.Next.Pt.Y==f.Y;)c=c.Next;g&&c.Pt.X!=f.X&&(c=c.Next);
e=this.DupOutPt(c,!g);d.IntPoint.op_Inequality(e.Pt,f)&&(c=e,c.Pt.X=f.X,c.Pt.Y=f.Y,e=this.DupOutPt(c,!g))}else{for(;c.Next.Pt.X>=f.X&&c.Next.Pt.X<=c.Pt.X&&c.Next.Pt.Y==f.Y;)c=c.Next;g||c.Pt.X==f.X||(c=c.Next);e=this.DupOutPt(c,g);d.IntPoint.op_Inequality(e.Pt,f)&&(c=e,c.Pt.X=f.X,c.Pt.Y=f.Y,e=this.DupOutPt(c,g))}h==d.Direction.dLeftToRight==g?(a.Prev=c,c.Next=a,b.Next=e,e.Prev=b):(a.Next=c,c.Prev=a,b.Prev=e,e.Next=b);return!0};d.Clipper.prototype.JoinPoints=function(a,b,c){var e=a.OutPt1,f=new d.OutPt,
g=a.OutPt2,h=new d.OutPt;if((h=a.OutPt1.Pt.Y==a.OffPt.Y)&&d.IntPoint.op_Equality(a.OffPt,a.OutPt1.Pt)&&d.IntPoint.op_Equality(a.OffPt,a.OutPt2.Pt)){for(f=a.OutPt1.Next;f!=e&&d.IntPoint.op_Equality(f.Pt,a.OffPt);)f=f.Next;f=f.Pt.Y>a.OffPt.Y;for(h=a.OutPt2.Next;h!=g&&d.IntPoint.op_Equality(h.Pt,a.OffPt);)h=h.Next;if(f==h.Pt.Y>a.OffPt.Y)return!1;f?(f=this.DupOutPt(e,!1),h=this.DupOutPt(g,!0),e.Prev=g,g.Next=e,f.Next=h,h.Prev=f):(f=this.DupOutPt(e,!0),h=this.DupOutPt(g,!1),e.Next=g,g.Prev=e,f.Prev=h,
h.Next=f);a.OutPt1=e;a.OutPt2=f;return!0}if(h){for(f=e;e.Prev.Pt.Y==e.Pt.Y&&e.Prev!=f&&e.Prev!=g;)e=e.Prev;for(;f.Next.Pt.Y==f.Pt.Y&&f.Next!=e&&f.Next!=g;)f=f.Next;if(f.Next==e||f.Next==g)return!1;for(h=g;g.Prev.Pt.Y==g.Pt.Y&&g.Prev!=h&&g.Prev!=f;)g=g.Prev;for(;h.Next.Pt.Y==h.Pt.Y&&h.Next!=g&&h.Next!=e;)h=h.Next;if(h.Next==g||h.Next==e)return!1;c={Left:null,Right:null};if(!this.GetOverlap(e.Pt.X,f.Pt.X,g.Pt.X,h.Pt.X,c))return!1;b=c.Left;var l=c.Right;c=new d.IntPoint;e.Pt.X>=b&&e.Pt.X<=l?(c.X=e.Pt.X,
c.Y=e.Pt.Y,b=e.Pt.X>f.Pt.X):g.Pt.X>=b&&g.Pt.X<=l?(c.X=g.Pt.X,c.Y=g.Pt.Y,b=g.Pt.X>h.Pt.X):f.Pt.X>=b&&f.Pt.X<=l?(c.X=f.Pt.X,c.Y=f.Pt.Y,b=f.Pt.X>e.Pt.X):(c.X=h.Pt.X,c.Y=h.Pt.Y,b=h.Pt.X>g.Pt.X);a.OutPt1=e;a.OutPt2=g;return this.JoinHorz(e,f,g,h,c,b)}for(f=e.Next;d.IntPoint.op_Equality(f.Pt,e.Pt)&&f!=e;)f=f.Next;if(l=f.Pt.Y>e.Pt.Y||!d.ClipperBase.SlopesEqual(e.Pt,f.Pt,a.OffPt,this.m_UseFullRange)){for(f=e.Prev;d.IntPoint.op_Equality(f.Pt,e.Pt)&&f!=e;)f=f.Prev;if(f.Pt.Y>e.Pt.Y||!d.ClipperBase.SlopesEqual(e.Pt,
f.Pt,a.OffPt,this.m_UseFullRange))return!1}for(h=g.Next;d.IntPoint.op_Equality(h.Pt,g.Pt)&&h!=g;)h=h.Next;var k=h.Pt.Y>g.Pt.Y||!d.ClipperBase.SlopesEqual(g.Pt,h.Pt,a.OffPt,this.m_UseFullRange);if(k){for(h=g.Prev;d.IntPoint.op_Equality(h.Pt,g.Pt)&&h!=g;)h=h.Prev;if(h.Pt.Y>g.Pt.Y||!d.ClipperBase.SlopesEqual(g.Pt,h.Pt,a.OffPt,this.m_UseFullRange))return!1}if(f==e||h==g||f==h||b==c&&l==k)return!1;l?(f=this.DupOutPt(e,!1),h=this.DupOutPt(g,!0),e.Prev=g,g.Next=e,f.Next=h,h.Prev=f):(f=this.DupOutPt(e,!0),
h=this.DupOutPt(g,!1),e.Next=g,g.Prev=e,f.Prev=h,h.Next=f);a.OutPt1=e;a.OutPt2=f;return!0};d.Clipper.GetBounds=function(a){for(var b=0,c=a.length;b<c&&0==a[b].length;)b++;if(b==c)return new d.IntRect(0,0,0,0);var e=new d.IntRect;e.left=a[b][0].X;e.right=e.left;e.top=a[b][0].Y;for(e.bottom=e.top;b<c;b++)for(var f=0,g=a[b].length;f<g;f++)a[b][f].X<e.left?e.left=a[b][f].X:a[b][f].X>e.right&&(e.right=a[b][f].X),a[b][f].Y<e.top?e.top=a[b][f].Y:a[b][f].Y>e.bottom&&(e.bottom=a[b][f].Y);return e};d.Clipper.prototype.GetBounds2=
function(a){var b=a,c=new d.IntRect;c.left=a.Pt.X;c.right=a.Pt.X;c.top=a.Pt.Y;c.bottom=a.Pt.Y;for(a=a.Next;a!=b;)a.Pt.X<c.left&&(c.left=a.Pt.X),a.Pt.X>c.right&&(c.right=a.Pt.X),a.Pt.Y<c.top&&(c.top=a.Pt.Y),a.Pt.Y>c.bottom&&(c.bottom=a.Pt.Y),a=a.Next;return c};d.Clipper.PointInPolygon=function(a,b){var c=0,e=b.length;if(3>e)return 0;for(var d=b[0],g=1;g<=e;++g){var h=g==e?b[0]:b[g];if(h.Y==a.Y&&(h.X==a.X||d.Y==a.Y&&h.X>a.X==d.X<a.X))return-1;if(d.Y<a.Y!=h.Y<a.Y)if(d.X>=a.X)if(h.X>a.X)c=1-c;else{var l=
(d.X-a.X)*(h.Y-a.Y)-(h.X-a.X)*(d.Y-a.Y);if(0==l)return-1;0<l==h.Y>d.Y&&(c=1-c)}else if(h.X>a.X){l=(d.X-a.X)*(h.Y-a.Y)-(h.X-a.X)*(d.Y-a.Y);if(0==l)return-1;0<l==h.Y>d.Y&&(c=1-c)}d=h}return c};d.Clipper.prototype.PointInPolygon=function(a,b){for(var c=0,e=b;;){var d=b.Pt.X,g=b.Pt.Y,h=b.Next.Pt.X,l=b.Next.Pt.Y;if(l==a.Y&&(h==a.X||g==a.Y&&h>a.X==d<a.X))return-1;if(g<a.Y!=l<a.Y)if(d>=a.X)if(h>a.X)c=1-c;else{d=(d-a.X)*(l-a.Y)-(h-a.X)*(g-a.Y);if(0==d)return-1;0<d==l>g&&(c=1-c)}else if(h>a.X){d=(d-a.X)*(l-
a.Y)-(h-a.X)*(g-a.Y);if(0==d)return-1;0<d==l>g&&(c=1-c)}b=b.Next;if(e==b)break}return c};d.Clipper.prototype.Poly2ContainsPoly1=function(a,b){var c=a;do{var e=this.PointInPolygon(c.Pt,b);if(0<=e)return 0!=e;c=c.Next}while(c!=a);return!0};d.Clipper.prototype.FixupFirstLefts1=function(a,b){for(var c=0,e=this.m_PolyOuts.length;c<e;c++){var d=this.m_PolyOuts[c];null!==d.Pts&&d.FirstLeft==a&&this.Poly2ContainsPoly1(d.Pts,b.Pts)&&(d.FirstLeft=b)}};d.Clipper.prototype.FixupFirstLefts2=function(a,b){for(var c=
0,e=this.m_PolyOuts,d=e.length,g=e[c];c<d;c++,g=e[c])g.FirstLeft==a&&(g.FirstLeft=b)};d.Clipper.ParseFirstLeft=function(a){for(;null!=a&&null==a.Pts;)a=a.FirstLeft;return a};d.Clipper.prototype.JoinCommonEdges=function(){for(var a=0,b=this.m_Joins.length;a<b;a++){var c=this.m_Joins[a],e=this.GetOutRec(c.OutPt1.Idx),f=this.GetOutRec(c.OutPt2.Idx);if(null!=e.Pts&&null!=f.Pts){var g;g=e==f?e:this.Param1RightOfParam2(e,f)?f:this.Param1RightOfParam2(f,e)?e:this.GetLowermostRec(e,f);if(this.JoinPoints(c,
e,f))if(e==f){e.Pts=c.OutPt1;e.BottomPt=null;f=this.CreateOutRec();f.Pts=c.OutPt2;this.UpdateOutPtIdxs(f);if(this.m_UsingPolyTree){g=0;for(var h=this.m_PolyOuts.length;g<h-1;g++){var l=this.m_PolyOuts[g];null!=l.Pts&&d.Clipper.ParseFirstLeft(l.FirstLeft)==e&&l.IsHole!=e.IsHole&&this.Poly2ContainsPoly1(l.Pts,c.OutPt2)&&(l.FirstLeft=f)}}this.Poly2ContainsPoly1(f.Pts,e.Pts)?(f.IsHole=!e.IsHole,f.FirstLeft=e,this.m_UsingPolyTree&&this.FixupFirstLefts2(f,e),(f.IsHole^this.ReverseSolution)==0<this.Area(f)&&
this.ReversePolyPtLinks(f.Pts)):this.Poly2ContainsPoly1(e.Pts,f.Pts)?(f.IsHole=e.IsHole,e.IsHole=!f.IsHole,f.FirstLeft=e.FirstLeft,e.FirstLeft=f,this.m_UsingPolyTree&&this.FixupFirstLefts2(e,f),(e.IsHole^this.ReverseSolution)==0<this.Area(e)&&this.ReversePolyPtLinks(e.Pts)):(f.IsHole=e.IsHole,f.FirstLeft=e.FirstLeft,this.m_UsingPolyTree&&this.FixupFirstLefts1(e,f))}else f.Pts=null,f.BottomPt=null,f.Idx=e.Idx,e.IsHole=g.IsHole,g==f&&(e.FirstLeft=f.FirstLeft),f.FirstLeft=e,this.m_UsingPolyTree&&this.FixupFirstLefts2(f,
e)}}};d.Clipper.prototype.UpdateOutPtIdxs=function(a){var b=a.Pts;do b.Idx=a.Idx,b=b.Prev;while(b!=a.Pts)};d.Clipper.prototype.DoSimplePolygons=function(){for(var a=0;a<this.m_PolyOuts.length;){var b=this.m_PolyOuts[a++],c=b.Pts;if(null!==c){do{for(var e=c.Next;e!=b.Pts;){if(d.IntPoint.op_Equality(c.Pt,e.Pt)&&e.Next!=c&&e.Prev!=c){var f=c.Prev,g=e.Prev;c.Prev=g;g.Next=c;e.Prev=f;f.Next=e;b.Pts=c;f=this.CreateOutRec();f.Pts=e;this.UpdateOutPtIdxs(f);this.Poly2ContainsPoly1(f.Pts,b.Pts)?(f.IsHole=!b.IsHole,
f.FirstLeft=b):this.Poly2ContainsPoly1(b.Pts,f.Pts)?(f.IsHole=b.IsHole,b.IsHole=!f.IsHole,f.FirstLeft=b.FirstLeft,b.FirstLeft=f):(f.IsHole=b.IsHole,f.FirstLeft=b.FirstLeft);e=c}e=e.Next}c=c.Next}while(c!=b.Pts)}}};d.Clipper.Area=function(a){var b=a.length;if(3>b)return 0;for(var c=0,e=0,d=b-1;e<b;++e)c+=(a[d].X+a[e].X)*(a[d].Y-a[e].Y),d=e;return 0.5*-c};d.Clipper.prototype.Area=function(a){var b=a.Pts;if(null==b)return 0;var c=0;do c+=(b.Prev.Pt.X+b.Pt.X)*(b.Prev.Pt.Y-b.Pt.Y),b=b.Next;while(b!=a.Pts);
return 0.5*c};d.Clipper.SimplifyPolygon=function(a,b){var c=[],e=new d.Clipper(0);e.StrictlySimple=!0;e.AddPath(a,d.PolyType.ptSubject,!0);e.Execute(d.ClipType.ctUnion,c,b,b);return c};d.Clipper.SimplifyPolygons=function(a,b){"undefined"==typeof b&&(b=d.PolyFillType.pftEvenOdd);var c=[],e=new d.Clipper(0);e.StrictlySimple=!0;e.AddPaths(a,d.PolyType.ptSubject,!0);e.Execute(d.ClipType.ctUnion,c,b,b);return c};d.Clipper.DistanceSqrd=function(a,b){var c=a.X-b.X,e=a.Y-b.Y;return c*c+e*e};d.Clipper.DistanceFromLineSqrd=
function(a,b,c){var e=b.Y-c.Y;c=c.X-b.X;b=e*b.X+c*b.Y;b=e*a.X+c*a.Y-b;return b*b/(e*e+c*c)};d.Clipper.SlopesNearCollinear=function(a,b,c,e){return d.Clipper.DistanceFromLineSqrd(b,a,c)<e};d.Clipper.PointsAreClose=function(a,b,c){var e=a.X-b.X;a=a.Y-b.Y;return e*e+a*a<=c};d.Clipper.ExcludeOp=function(a){var b=a.Prev;b.Next=a.Next;a.Next.Prev=b;b.Idx=0;return b};d.Clipper.CleanPolygon=function(a,b){"undefined"==typeof b&&(b=1.415);var c=a.length;if(0==c)return[];for(var e=Array(c),f=0;f<c;++f)e[f]=
new d.OutPt;for(f=0;f<c;++f)e[f].Pt=a[f],e[f].Next=e[(f+1)%c],e[f].Next.Prev=e[f],e[f].Idx=0;f=b*b;for(e=e[0];0==e.Idx&&e.Next!=e.Prev;)d.Clipper.PointsAreClose(e.Pt,e.Prev.Pt,f)?(e=d.Clipper.ExcludeOp(e),c--):d.Clipper.PointsAreClose(e.Prev.Pt,e.Next.Pt,f)?(d.Clipper.ExcludeOp(e.Next),e=d.Clipper.ExcludeOp(e),c-=2):d.Clipper.SlopesNearCollinear(e.Prev.Pt,e.Pt,e.Next.Pt,f)?(e=d.Clipper.ExcludeOp(e),c--):(e.Idx=1,e=e.Next);3>c&&(c=0);for(var g=Array(c),f=0;f<c;++f)g[f]=new d.IntPoint(e.Pt),e=e.Next;
return g};d.Clipper.CleanPolygons=function(a,b){for(var c=Array(a.length),e=0,f=a.length;e<f;e++)c[e]=d.Clipper.CleanPolygon(a[e],b);return c};d.Clipper.Minkowski=function(a,b,c,e){var f=e?1:0,g=a.length,h=b.length;e=[];if(c)for(c=0;c<h;c++){for(var l=Array(g),k=0,n=a.length,m=a[k];k<n;k++,m=a[k])l[k]=new d.IntPoint(b[c].X+m.X,b[c].Y+m.Y);e.push(l)}else for(c=0;c<h;c++){l=Array(g);k=0;n=a.length;for(m=a[k];k<n;k++,m=a[k])l[k]=new d.IntPoint(b[c].X-m.X,b[c].Y-m.Y);e.push(l)}a=[];for(c=0;c<h-1+f;c++)for(k=
0;k<g;k++)b=[],b.push(e[c%h][k%g]),b.push(e[(c+1)%h][k%g]),b.push(e[(c+1)%h][(k+1)%g]),b.push(e[c%h][(k+1)%g]),d.Clipper.Orientation(b)||b.reverse(),a.push(b);f=new d.Clipper(0);f.AddPaths(a,d.PolyType.ptSubject,!0);f.Execute(d.ClipType.ctUnion,e,d.PolyFillType.pftNonZero,d.PolyFillType.pftNonZero);return e};d.Clipper.MinkowskiSum=function(){var a=arguments,b=a.length;if(3==b){var c=a[0],e=a[2];return d.Clipper.Minkowski(c,a[1],!0,e)}if(4==b){for(var c=a[0],f=a[1],b=a[2],e=a[3],a=new d.Clipper,g,
h=0,l=f.length;h<l;++h)g=d.Clipper.Minkowski(c,f[h],!0,e),a.AddPaths(g,d.PolyType.ptSubject,!0);e&&a.AddPaths(f,d.PolyType.ptClip,!0);c=new d.Paths;a.Execute(d.ClipType.ctUnion,c,b,b);return c}};d.Clipper.MinkowskiDiff=function(a,b,c){return d.Clipper.Minkowski(a,b,!1,c)};d.Clipper.PolyTreeToPaths=function(a){var b=[];d.Clipper.AddPolyNodeToPaths(a,d.Clipper.NodeType.ntAny,b);return b};d.Clipper.AddPolyNodeToPaths=function(a,b,c){var e=!0;switch(b){case d.Clipper.NodeType.ntOpen:return;case d.Clipper.NodeType.ntClosed:e=
!a.IsOpen}0<a.m_polygon.length&&e&&c.push(a.m_polygon);e=0;a=a.Childs();for(var f=a.length,g=a[e];e<f;e++,g=a[e])d.Clipper.AddPolyNodeToPaths(g,b,c)};d.Clipper.OpenPathsFromPolyTree=function(a){for(var b=new d.Paths,c=0,e=a.ChildCount();c<e;c++)a.Childs()[c].IsOpen&&b.push(a.Childs()[c].m_polygon);return b};d.Clipper.ClosedPathsFromPolyTree=function(a){var b=new d.Paths;d.Clipper.AddPolyNodeToPaths(a,d.Clipper.NodeType.ntClosed,b);return b};K(d.Clipper,d.ClipperBase);d.Clipper.NodeType={ntAny:0,ntOpen:1,
ntClosed:2};d.ClipperOffset=function(a,b){"undefined"==typeof a&&(a=2);