| 12 |
- // https://github.com/topojson/topojson-client v3.1.0 Copyright 2019 Mike Bostock
- !function(e,t){"object"==typeof exports&&"undefined"!=typeof module?t(exports):"function"==typeof define&&define.amd?define(["exports"],t):t((e=e||self).topojson=e.topojson||{})}(this,function(e){"use strict";function t(e){return e}function r(e){if(null==e)return t;var r,n,o=e.scale[0],a=e.scale[1],i=e.translate[0],c=e.translate[1];return function(e,t){t||(r=n=0);var u=2,f=e.length,s=new Array(f);for(s[0]=(r+=e[0])*o+i,s[1]=(n+=e[1])*a+c;u<f;)s[u]=e[u],++u;return s}}function n(e){var t,n=r(e.transform),o=1/0,a=o,i=-o,c=-o;function u(e){(e=n(e))[0]<o&&(o=e[0]),e[0]>i&&(i=e[0]),e[1]<a&&(a=e[1]),e[1]>c&&(c=e[1])}function f(e){switch(e.type){case"GeometryCollection":e.geometries.forEach(f);break;case"Point":u(e.coordinates);break;case"MultiPoint":e.coordinates.forEach(u)}}for(t in e.arcs.forEach(function(e){for(var t,r=-1,u=e.length;++r<u;)(t=n(e[r],r))[0]<o&&(o=t[0]),t[0]>i&&(i=t[0]),t[1]<a&&(a=t[1]),t[1]>c&&(c=t[1])}),e.objects)f(e.objects[t]);return[o,a,i,c]}function o(e,t){var r=t.id,n=t.bbox,o=null==t.properties?{}:t.properties,i=a(e,t);return null==r&&null==n?{type:"Feature",properties:o,geometry:i}:null==n?{type:"Feature",id:r,properties:o,geometry:i}:{type:"Feature",id:r,bbox:n,properties:o,geometry:i}}function a(e,t){var n=r(e.transform),o=e.arcs;function a(e,t){t.length&&t.pop();for(var r=o[e<0?~e:e],a=0,i=r.length;a<i;++a)t.push(n(r[a],a));e<0&&function(e,t){for(var r,n=e.length,o=n-t;o<--n;)r=e[o],e[o++]=e[n],e[n]=r}(t,i)}function i(e){return n(e)}function c(e){for(var t=[],r=0,n=e.length;r<n;++r)a(e[r],t);return t.length<2&&t.push(t[0]),t}function u(e){for(var t=c(e);t.length<4;)t.push(t[0]);return t}function f(e){return e.map(u)}return function e(t){var r,n=t.type;switch(n){case"GeometryCollection":return{type:n,geometries:t.geometries.map(e)};case"Point":r=i(t.coordinates);break;case"MultiPoint":r=t.coordinates.map(i);break;case"LineString":r=c(t.arcs);break;case"MultiLineString":r=t.arcs.map(c);break;case"Polygon":r=f(t.arcs);break;case"MultiPolygon":r=t.arcs.map(f);break;default:return null}return{type:n,coordinates:r}}(t)}function i(e,t){var r={},n={},o={},a=[],i=-1;function c(e,t){for(var n in e){var o=e[n];delete t[o.start],delete o.start,delete o.end,o.forEach(function(e){r[e<0?~e:e]=1}),a.push(o)}}return t.forEach(function(r,n){var o,a=e.arcs[r<0?~r:r];a.length<3&&!a[1][0]&&!a[1][1]&&(o=t[++i],t[i]=r,t[n]=o)}),t.forEach(function(t){var r,a,i=function(t){var r,n=e.arcs[t<0?~t:t],o=n[0];e.transform?(r=[0,0],n.forEach(function(e){r[0]+=e[0],r[1]+=e[1]})):r=n[n.length-1];return t<0?[r,o]:[o,r]}(t),c=i[0],u=i[1];if(r=o[c])if(delete o[r.end],r.push(t),r.end=u,a=n[u]){delete n[a.start];var f=a===r?r:r.concat(a);n[f.start=r.start]=o[f.end=a.end]=f}else n[r.start]=o[r.end]=r;else if(r=n[u])if(delete n[r.start],r.unshift(t),r.start=c,a=o[c]){delete o[a.end];var s=a===r?r:a.concat(r);n[s.start=a.start]=o[s.end=r.end]=s}else n[r.start]=o[r.end]=r;else n[(r=[t]).start=c]=o[r.end=u]=r}),c(o,n),c(n,o),t.forEach(function(e){r[e<0?~e:e]||a.push([e])}),a}function c(e,t,r){var n,o,a;if(arguments.length>1)n=function(e,t,r){var n,o=[],a=[];function i(e){var t=e<0?~e:e;(a[t]||(a[t]=[])).push({i:e,g:n})}function c(e){e.forEach(i)}function u(e){e.forEach(c)}return function e(t){switch(n=t,t.type){case"GeometryCollection":t.geometries.forEach(e);break;case"LineString":c(t.arcs);break;case"MultiLineString":case"Polygon":u(t.arcs);break;case"MultiPolygon":!function(e){e.forEach(u)}(t.arcs)}}(t),a.forEach(null==r?function(e){o.push(e[0].i)}:function(e){r(e[0].g,e[e.length-1].g)&&o.push(e[0].i)}),o}(0,t,r);else for(o=0,n=new Array(a=e.arcs.length);o<a;++o)n[o]=o;return{type:"MultiLineString",arcs:i(e,n)}}function u(e,t){var r={},n=[],o=[];function c(e){e.forEach(function(t){t.forEach(function(t){(r[t=t<0?~t:t]||(r[t]=[])).push(e)})}),n.push(e)}function u(t){return function(e){for(var t,r=-1,n=e.length,o=e[n-1],a=0;++r<n;)t=o,o=e[r],a+=t[0]*o[1]-t[1]*o[0];return Math.abs(a)}(a(e,{type:"Polygon",arcs:[t]}).coordinates[0])}return t.forEach(function e(t){switch(t.type){case"GeometryCollection":t.geometries.forEach(e);break;case"Polygon":c(t.arcs);break;case"MultiPolygon":t.arcs.forEach(c)}}),n.forEach(function(e){if(!e._){var t=[],n=[e];for(e._=1,o.push(t);e=n.pop();)t.push(e),e.forEach(function(e){e.forEach(function(e){r[e<0?~e:e].forEach(function(e){e._||(e._=1,n.push(e))})})})}}),n.forEach(function(e){delete e._}),{type:"MultiPolygon",arcs:o.map(function(t){var n,o=[];if(t.forEach(function(e){e.forEach(function(e){e.forEach(function(e){r[e<0?~e:e].length<2&&o.push(e)})})}),(n=(o=i(e,o)).length)>1)for(var a,c,f=1,s=u(o[0]);f<n;++f)(a=u(o[f]))>s&&(c=o[0],o[0]=o[f],o[f]=c,s=a);return o}).filter(function(e){return e.length>0})}}function f(e,t){for(var r=0,n=e.length;r<n;){var o=r+n>>>1;e[o]<t?r=o+1:n=o}return r}function s(e){if(null==e)return t;var r,n,o=e.scale[0],a=e.scale[1],i=e.translate[0],c=e.translate[1];return function(e,t){t||(r=n=0);var u=2,f=e.length,s=new Array(f),l=Math.round((e[0]-i)/o),h=Math.round((e[1]-c)/a);for(s[0]=l-r,r=l,s[1]=h-n,n=h;u<f;)s[u]=e[u],++u;return s}}e.bbox=n,e.feature=function(e,t){return"string"==typeof t&&(t=e.objects[t]),"GeometryCollection"===t.type?{type:"FeatureCollection",features:t.geometries.map(function(t){return o(e,t)})}:o(e,t)},e.merge=function(e){return a(e,u.apply(this,arguments))},e.mergeArcs=u,e.mesh=function(e){return a(e,c.apply(this,arguments))},e.meshArcs=c,e.neighbors=function(e){var t={},r=e.map(function(){return[]});function n(e,r){e.forEach(function(e){e<0&&(e=~e);var n=t[e];n?n.push(r):t[e]=[r]})}function o(e,t){e.forEach(function(e){n(e,t)})}var a={LineString:n,MultiLineString:o,Polygon:o,MultiPolygon:function(e,t){e.forEach(function(e){o(e,t)})}};for(var i in e.forEach(function e(t,r){"GeometryCollection"===t.type?t.geometries.forEach(function(t){e(t,r)}):t.type in a&&a[t.type](t.arcs,r)}),t)for(var c=t[i],u=c.length,s=0;s<u;++s)for(var l=s+1;l<u;++l){var h,p=c[s],g=c[l];(h=r[p])[i=f(h,g)]!==g&&h.splice(i,0,g),(h=r[g])[i=f(h,p)]!==p&&h.splice(i,0,p)}return r},e.quantize=function(e,t){if(e.transform)throw new Error("already quantized");if(t&&t.scale)u=e.bbox;else{if(!((r=Math.floor(t))>=2))throw new Error("n must be ≥2");var r,o=(u=e.bbox||n(e))[0],a=u[1],i=u[2],c=u[3];t={scale:[i-o?(i-o)/(r-1):1,c-a?(c-a)/(r-1):1],translate:[o,a]}}var u,f,l=s(t),h=e.objects,p={};function g(e){return l(e)}function y(e){var t;switch(e.type){case"GeometryCollection":t={type:"GeometryCollection",geometries:e.geometries.map(y)};break;case"Point":t={type:"Point",coordinates:g(e.coordinates)};break;case"MultiPoint":t={type:"MultiPoint",coordinates:e.coordinates.map(g)};break;default:return e}return null!=e.id&&(t.id=e.id),null!=e.bbox&&(t.bbox=e.bbox),null!=e.properties&&(t.properties=e.properties),t}for(f in h)p[f]=y(h[f]);return{type:"Topology",bbox:u,transform:t,objects:p,arcs:e.arcs.map(function(e){var t,r=0,n=1,o=e.length,a=new Array(o);for(a[0]=l(e[0],0);++r<o;)((t=l(e[r],r))[0]||t[1])&&(a[n++]=t);return 1===n&&(a[n++]=[0,0]),a.length=n,a})}},e.transform=r,e.untransform=s,Object.defineProperty(e,"__esModule",{value:!0})});
|
