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n[r]||n[r+1]?this._clipInfinite(e,t,n[r],n[r+1],n[r+2],n[r+3]):this._clipFinite(e,t)}},{key:"_clipFinite",value:function(e,t){for(var n,r,i,a,u,o=t.length,s=null,l=t[o-2],c=t[o-1],f=this._regioncode(l,c),d=0;d<o;d+=2)if(n=l,r=c,l=t[d],c=t[d+1],i=f,f=this._regioncode(l,c),0===i&&0===f)a=u,u=0,s?s.push(l,c):s=[l,c];else{var h=void 0,p=void 0,m=void 0,v=void 0,g=void 0;if(0===i){if(null===(h=this._clipSegment(n,r,l,c,i,f)))continue;var y=_slicedToArray(h,4);p=y[0],m=y[1],v=y[2],g=y[3]}else{if(null===(h=this._clipSegment(l,c,n,r,f,i)))continue;var b=_slicedToArray(h,4);v=b[0],g=b[1],p=b[2],m=b[3],a=u,u=this._edgecode(p,m),a&&u&&this._edge(e,a,u,s,s.length),s?s.push(p,m):s=[p,m]}a=u,u=this._edgecode(v,g),a&&u&&this._edge(e,a,u,s,s.length),s?s.push(v,g):s=[v,g]}if(s)a=u,u=this._edgecode(s[0],s[1]),a&&u&&this._edge(e,a,u,s,s.length);else 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_g(e,t){if(!e)throw new Error("ASSERT: "+t)}function kg(e){return e>=48&&e<=57}function Ag(e){return"0123456789abcdefABCDEF".indexOf(e)>=0}function wg(e){return"01234567".indexOf(e)>=0}function Dg(e){return 32===e||9===e||11===e||12===e||160===e||e>=5760&&[5760,6158,8192,8193,8194,8195,8196,8197,8198,8199,8200,8201,8202,8239,8287,12288,65279].indexOf(e)>=0}function Cg(e){return 10===e||13===e||8232===e||8233===e}function Mg(e){return 36===e||95===e||e>=65&&e<=90||e>=97&&e<=122||92===e||e>=128&&bg.test(String.fromCharCode(e))}function Eg(e){return 36===e||95===e||e>=65&&e<=90||e>=97&&e<=122||e>=48&&e<=57||92===e||e>=128&&xg.test(String.fromCharCode(e))}var Fg={if:1,in:1,do:1,var:1,for:1,new:1,try:1,let:1,this:1,else:1,case:1,void:1,with:1,enum:1,while:1,break:1,catch:1,throw:1,const:1,yield:1,class:1,super:1,return:1,typeof:1,delete:1,switch:1,export:1,import:1,public:1,static:1,default:1,finally:1,extends:1,package:1,private:1,function:1,continue:1,debugger:1,interface:1,protected:1,instanceof:1,implements:1};function Sg(){for(var e;pg<mg&&(Dg(e=hg.charCodeAt(pg))||Cg(e));)++pg}function Bg(e){var t,n,r,i=0;for(n="u"===e?4:2,t=0;t<n;++t)pg<mg&&Ag(hg[pg])?(r=hg[pg++],i=16*i+"0123456789abcdef".indexOf(r.toLowerCase())):Yg({},"Unexpected token %0",yg);return String.fromCharCode(i)}function Og(){var e,t,n,r;for(t=0,"}"===(e=hg[pg])&&Yg({},"Unexpected token %0",yg);pg<mg&&Ag(e=hg[pg++]);)t=16*t+"0123456789abcdef".indexOf(e.toLowerCase());return(t>1114111||"}"!==e)&&Yg({},"Unexpected token %0",yg),t<=65535?String.fromCharCode(t):(n=55296+(t-65536>>10),r=56320+(t-65536&1023),String.fromCharCode(n,r))}function Rg(){var e,t;for(e=hg.charCodeAt(pg++),t=String.fromCharCode(e),92===e&&(117!==hg.charCodeAt(pg)&&Yg({},"Unexpected token %0",yg),++pg,(e=Bg("u"))&&"\\"!==e&&Mg(e.charCodeAt(0))||Yg({},"Unexpected token %0",yg),t=e);pg<mg&&Eg(e=hg.charCodeAt(pg));)++pg,t+=String.fromCharCode(e),92===e&&(t=t.substr(0,t.length-1),117!==hg.charCodeAt(pg)&&Yg({},"Unexpected token %0",yg),++pg,(e=Bg("u"))&&"\\"!==e&&Eg(e.charCodeAt(0))||Yg({},"Unexpected token %0",yg),t+=e);return t}function zg(){var e,t;return e=pg,{type:1===(t=92===hg.charCodeAt(pg)?Rg():function(){var e,t;for(e=pg++;pg<mg;){if(92===(t=hg.charCodeAt(pg)))return pg=e,Rg();if(!Eg(t))break;++pg}return hg.slice(e,pg)}()).length?3:Fg.hasOwnProperty(t)?4:"null"===t?5:"true"===t||"false"===t?1:3,value:t,start:e,end:pg}}function Tg(){var e,t,n,r,i=pg,a=hg.charCodeAt(pg),u=hg[pg];switch(a){case 46:case 40:case 41:case 59:case 44:case 123:case 125:case 91:case 93:case 58:case 63:case 126:return++pg,{type:7,value:String.fromCharCode(a),start:i,end:pg};default:if(61===(e=hg.charCodeAt(pg+1)))switch(a){case 43:case 45:case 47:case 60:case 62:case 94:case 124:case 37:case 38:case 42:return pg+=2,{type:7,value:String.fromCharCode(a)+String.fromCharCode(e),start:i,end:pg};case 33:case 61:return pg+=2,61===hg.charCodeAt(pg)&&++pg,{type:7,value:hg.slice(i,pg),start:i,end:pg}}}return">>>="===(r=hg.substr(pg,4))?{type:7,value:r,start:i,end:pg+=4}:">>>"===(n=r.substr(0,3))||"<<="===n||">>="===n?{type:7,value:n,start:i,end:pg+=3}:u===(t=n.substr(0,2))[1]&&"+-<>&|".indexOf(u)>=0||"=>"===t?{type:7,value:t,start:i,end:pg+=2}:"<>=!+-*%&|^/".indexOf(u)>=0?{type:7,value:u,start:i,end:++pg}:void Yg({},"Unexpected token %0",yg)}function Pg(){var e,t,n;if(_g(kg((n=hg[pg]).charCodeAt(0))||"."===n,"Numeric literal must start with a decimal digit or a decimal point"),t=pg,e="","."!==n){if(e=hg[pg++],n=hg[pg],"0"===e){if("x"===n||"X"===n)return++pg,function(e){for(var t="";pg<mg&&Ag(hg[pg]);)t+=hg[pg++];return 0===t.length&&Yg({},"Unexpected token %0",yg),Mg(hg.charCodeAt(pg))&&Yg({},"Unexpected token %0",yg),{type:6,value:parseInt("0x"+t,16),start:e,end:pg}}(t);if(wg(n))return function(e){for(var t="0"+hg[pg++];pg<mg&&wg(hg[pg]);)t+=hg[pg++];return(Mg(hg.charCodeAt(pg))||kg(hg.charCodeAt(pg)))&&Yg({},"Unexpected token %0",yg),{type:6,value:parseInt(t,8),octal:!0,start:e,end:pg}}(t);n&&kg(n.charCodeAt(0))&&Yg({},"Unexpected token %0",yg)}for(;kg(hg.charCodeAt(pg));)e+=hg[pg++];n=hg[pg]}if("."===n){for(e+=hg[pg++];kg(hg.charCodeAt(pg));)e+=hg[pg++];n=hg[pg]}if("e"===n||"E"===n)if(e+=hg[pg++],"+"!==(n=hg[pg])&&"-"!==n||(e+=hg[pg++]),kg(hg.charCodeAt(pg)))for(;kg(hg.charCodeAt(pg));)e+=hg[pg++];else Yg({},"Unexpected token %0",yg);return Mg(hg.charCodeAt(pg))&&Yg({},"Unexpected token %0",yg),{type:6,value:parseFloat(e),start:t,end:pg}}function qg(){var e,t,n,r;return vg=null,Sg(),e=pg,t=function(){var e,t,n,r;for(_g("/"===(e=hg[pg]),"Regular expression literal must start with a slash"),t=hg[pg++],n=!1,r=!1;pg<mg;)if(t+=e=hg[pg++],"\\"===e)Cg((e=hg[pg++]).charCodeAt(0))&&Yg({},"Invalid regular expression: missing /"),t+=e;else if(Cg(e.charCodeAt(0)))Yg({},"Invalid regular expression: missing /");else if(n)"]"===e&&(n=!1);else{if("/"===e){r=!0;break}"["===e&&(n=!0)}return r||Yg({},"Invalid regular expression: missing /"),{value:t.substr(1,t.length-2),literal:t}}(),n=function(){var e,t,n;for(t="",n="";pg<mg&&Eg((e=hg[pg]).charCodeAt(0));)++pg,"\\"===e&&pg<mg?Yg({},"Unexpected token %0",yg):(n+=e,t+=e);return n.search(/[^gimuy]/g)>=0&&Yg({},"Invalid regular expression",n),{value:n,literal:t}}(),r=function(e,t){var n=e;t.indexOf("u")>=0&&(n=n.replace(/\\u\{([0-9a-fA-F]+)\}/g,(function(e,t){if(parseInt(t,16)<=1114111)return"x";Yg({},"Invalid regular expression")})).replace(/[\uD800-\uDBFF][\uDC00-\uDFFF]/g,"x"));try{new RegExp(n)}catch(e){Yg({},"Invalid regular expression")}try{return new RegExp(e,t)}catch(e){return null}}(t.value,n.value),{literal:t.literal+n.literal,value:r,regex:{pattern:t.value,flags:n.value},start:e,end:pg}}function Lg(){var e;return Sg(),pg>=mg?{type:2,start:pg,end:pg}:Mg(e=hg.charCodeAt(pg))?zg():40===e||41===e||59===e?Tg():39===e||34===e?function(){var e,t,n,r,i="",a=!1;for(_g("'"===(e=hg[pg])||'"'===e,"String literal must starts with a quote"),t=pg,++pg;pg<mg;){if((n=hg[pg++])===e){e="";break}if("\\"===n)if((n=hg[pg++])&&Cg(n.charCodeAt(0)))"\r"===n&&"\n"===hg[pg]&&++pg;else switch(n){case"u":case"x":"{"===hg[pg]?(++pg,i+=Og()):i+=Bg(n);break;case"n":i+="\n";break;case"r":i+="\r";break;case"t":i+="\t";break;case"b":i+="\b";break;case"f":i+="\f";break;case"v":i+="\v";break;default:wg(n)?(0!==(r="01234567".indexOf(n))&&(a=!0),pg<mg&&wg(hg[pg])&&(a=!0,r=8*r+"01234567".indexOf(hg[pg++]),"0123".indexOf(n)>=0&&pg<mg&&wg(hg[pg])&&(r=8*r+"01234567".indexOf(hg[pg++]))),i+=String.fromCharCode(r)):i+=n}else{if(Cg(n.charCodeAt(0)))break;i+=n}}return""!==e&&Yg({},"Unexpected token 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