fernandez-polygon-decomposition/dist/index.min.js

An algorithm to decompose polygons with holes from "A practical algorithm for decomposing polygonal domains into convex polygons by diagonals" by J Fernández

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f=u.x,a=u.y,l=u.insideSegment1,c=u.insideSegment2,h=u.onEdgeSegment1,g=u.onEdgeSegment2;(l||h)&&(c||g)&&e.push({x:f,y:a,edge:i,hole:r})}}return e},X=function(n){var r=arguments.length>1&&void 0!==arguments[1]?arguments[1]:1;return[].concat(f(n.slice(r)),f(n.slice(0,r)))},Y=function(n,r,e){for(var t=function(r,e){return E(n.a,r)-E(n.a,e)},o=[],i=e.length,u=0;u<i;u++){var a;(a=o).push.apply(a,f(W(n,e[u])))}for(var l=n.b.id;o.length>0;){var c=o.sort(t)[0],h=Object.values(c.edge).filter((function(n){return A(n,r)})).sort(t)[0];if(h.id===l)return n;n={a:n.a,b:h,hole:c.hole},l=h.id,o=[];for(var g=0;g<i;g++){var v;(v=o).push.apply(v,f(W(n,e[g])))}}return n};function Z(n){var r=arguments.length>1&&void 0!==arguments[1]?arguments[1]:[];if(!Array.isArray(n))throw new Error("absHol can only take an array of points {x, y} as input");if(n.length<=2)return[n];if(!O(n))throw new Error("absHol can only work with clockwise ordered vertices");if(!r.every((function(r){return 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e=t[r],o=e.i2,i=e.j2;if(w(o,n.b)&&w(i,n.a)){t[r].leftPolygon=c;break}}})),h)return"break";t.push({i2:g.b,j2:g.a,rightPolygon:c}),l=F(l,c)}};;){if("break"===c())break}return{LPCP:a,trueDiagonals:u,LLE:t}}(e,r.map((function(n){var r=K(n,t);return t+=r.length,r})),t),a=u.LPCP,l=u.trueDiagonals,c=G(a,u.LLE).filter((function(n){return!function(n){var r=n.length;return n.every((function(e,t){return 0===P(n[(t-1+r)%r],e,n[(t+1)%r])}))}(n)}));return l.forEach((function(n){for(var r,e,t,o,i,u,f=n.a,a=n.b,l=0;l<c.length;l++){for(var h=c[l],g=h.length,v=T(h),y=function(n){var l=v[n],c=l.a,y=l.b;return w(f,c)&&w(a,y)?(t=h[(h.findIndex((function(n){return w(n,c)}))+g-1)%g],u=h[(h.findIndex((function(n){return w(n,y)}))+1)%g],e=h,"break"):w(f,y)&&w(a,c)?(o=h[(h.findIndex((function(n){return w(n,y)}))+1)%g],i=h[(h.findIndex((function(n){return w(n,c)}))+g-1)%g],r=h,"break"):void 0},s=0;s<v.length;s++){if("break"===y(s))break}if(e&&r){P(t,f,o)>=0&&P(i,a,u)>=0&&(c=c.filter((function(n){return 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O(n)?f(n):f(n).reverse()},n.setRobustness=function(n){b=n},Object.defineProperty(n,"__esModule",{value:!0})}));