randy
fba8ca10a2
5th Overlays item, generated client-side from the same online Terrarium DEM tiles Terrain shading already fetches (no offline fallback — the plugin's DemSource has no public hook to route through the pmtiles:// protocol the offline basemap uses, so this quietly renders nothing without a network, same as Radar/the Wikipedia layer). A plain vector source/layer under MapLibre's own tile lifecycle, no manual refetch-on-move code needed. Thresholds are the plugin's own generic starting point, not yet tuned against real terrain. Labels skipped for now (font-name matching across the online/offline styles' own glyph sets adds real risk for a nice-to-have, not the actual ask).
16 lines
30 KiB
JavaScript
16 lines
30 KiB
JavaScript
!function(t,e){"object"==typeof exports&&"undefined"!=typeof module?module.exports=e():"function"==typeof define&&define.amd?define(e):(t="undefined"!=typeof globalThis?globalThis:t||self).mlcontour=e()}(this,(function(){"use strict";var t,e,i;function r(r,s){if(t)if(e){var n="var sharedChunk = {}; ("+t+")(sharedChunk); ("+e+")(sharedChunk);",o={};t(o),i=s(o),"undefined"!=typeof window&&(i.workerUrl=window.URL.createObjectURL(new Blob([n],{type:"text/javascript"})))}else e=s;else t=s}return r(0,(function(t){class e{constructor(t,e){this.start=t,this.end=e,this.points=[],this.append=this.append.bind(this),this.prepend=this.prepend.bind(this)}append(t,e){this.points.push(Math.round(t),Math.round(e))}prepend(t,e){this.points.splice(0,0,Math.round(t),Math.round(e))}lineString(){return this.toArray()}isEmpty(){return this.points.length<2}appendFragment(t){this.points.push(...t.points),this.end=t.end}toArray(){return this.points}}const i=[[],[[[1,2],[0,1]]],[[[2,1],[1,2]]],[[[2,1],[0,1]]],[[[1,0],[2,1]]],[[[1,2],[0,1]],[[1,0],[2,1]]],[[[1,0],[1,2]]],[[[1,0],[0,1]]],[[[0,1],[1,0]]],[[[1,2],[1,0]]],[[[0,1],[1,0]],[[2,1],[1,2]]],[[[2,1],[1,0]]],[[[0,1],[2,1]]],[[[1,2],[2,1]]],[[[0,1],[1,2]]],[]];function r(t,e,i,r){return(e=2*e+r[0])+(i=2*i+r[1])*(t+1)*2}function s(t,e,i){return(e-t)/(i-t)}function n(t,n,o=4096,a=1){if(!t)return{};const h=o/(n.width-1);let l,c,d,u,f,p;const w={},g=new Map,m=new Map;function b(t,e,i){0===t[0]?i(h*(p-1),h*(f-s(d,e,l))):2===t[0]?i(h*p,h*(f-s(u,e,c))):0===t[1]?i(h*(p-s(c,e,l)),h*(f-1)):i(h*(p-s(u,e,d)),h*f)}for(f=1-a;f<n.height+a;f++){c=n.get(0,f-1),u=n.get(0,f);let s=Math.min(c,u),o=Math.max(c,u);for(p=1-a;p<n.width+a;p++){l=c,d=u,c=n.get(p,f-1),u=n.get(p,f);const a=s,h=o;if(s=Math.min(c,u),o=Math.max(c,u),isNaN(l)||isNaN(c)||isNaN(u)||isNaN(d))continue;const y=Math.min(a,s),v=Math.max(h,o),P=Math.ceil(y/t)*t,x=Math.floor(v/t)*t;for(let s=P;s<=x;s+=t){const t=l>s,o=c>s,a=d>s,h=u>s;for(const l of i[(t?8:0)|(o?4:0)|(h?2:0)|(a?1:0)]){let t=g.get(s);t||g.set(s,t=new Map);let i=m.get(s);i||m.set(s,i=new Map);const o=l[0],a=l[1],h=r(n.width,p,f,o),c=r(n.width,p,f,a);let d,u;if(d=i.get(h))if(i.delete(h),u=t.get(c))if(t.delete(c),d===u){if(b(a,s,d.append),!d.isEmpty()){let t=w[s];t||(w[s]=t=[]),t.push(d.lineString())}}else d.appendFragment(u),i.set(d.end=u.end,d);else b(a,s,d.append),i.set(d.end=c,d);else if(d=t.get(c))t.delete(c),b(o,s,d.prepend),t.set(d.start=h,d);else{const r=new e(h,c);b(o,s,r.append),b(a,s,r.append),t.set(h,r),i.set(c,r)}}}}}for(const[t,e]of g.entries()){let i=null;for(const r of e.values())r.isEmpty()||(null==i&&(i=w[t]||(w[t]=[])),i.push(r.lineString()))}return w}
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/*! *****************************************************************************
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Copyright (c) Microsoft Corporation.
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Permission to use, copy, modify, and/or distribute this software for any
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purpose with or without fee is hereby granted.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
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REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
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INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
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OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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PERFORMANCE OF THIS SOFTWARE.
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***************************************************************************** */function o(t,e){var i={};for(var r in t)Object.prototype.hasOwnProperty.call(t,r)&&e.indexOf(r)<0&&(i[r]=t[r]);if(null!=t&&"function"==typeof Object.getOwnPropertySymbols){var s=0;for(r=Object.getOwnPropertySymbols(t);s<r.length;s++)e.indexOf(r[s])<0&&Object.prototype.propertyIsEnumerable.call(t,r[s])&&(i[r[s]]=t[r[s]])}return i}function a(t,e,i,r){return new(i||(i=Promise))((function(s,n){function o(t){try{h(r.next(t))}catch(t){n(t)}}function a(t){try{h(r.throw(t))}catch(t){n(t)}}function h(t){var e;t.done?s(t.value):(e=t.value,e instanceof i?e:new i((function(t){t(e)}))).then(o,a)}h((r=r.apply(t,e||[])).next())}))}function h(t){const e=Object.entries(t);return e.sort((([t],[e])=>t<e?-1:t>e?1:0)),e}function l(t){return h(t).map((([t,e])=>[t,..."number"==typeof e?[e]:e].join("*"))).join("~")}function c(t){return h(t).map((([t,e])=>`${encodeURIComponent(t)}=${encodeURIComponent(e)}`)).join(",")}let 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e=this.length||16;for(;e<this.pos+t;)e*=2;if(e!==this.length){const t=new Uint8Array(e);t.set(this.buf),this.buf=t,this.dataView=new DataView(t.buffer),this.length=e}}finish(){return this.length=this.pos,this.pos=0,this.buf.subarray(0,this.length)}writeFixed32(t){this.realloc(4),this.dataView.setInt32(this.pos,t,!0),this.pos+=4}writeSFixed32(t){this.realloc(4),this.dataView.setInt32(this.pos,t,!0),this.pos+=4}writeFixed64(t){this.realloc(8),this.dataView.setInt32(this.pos,-1&t,!0),this.dataView.setInt32(this.pos+4,Math.floor(t*N),!0),this.pos+=8}writeSFixed64(t){this.realloc(8),this.dataView.setInt32(this.pos,-1&t,!0),this.dataView.setInt32(this.pos+4,Math.floor(t*N),!0),this.pos+=8}writeVarint(t){(t=+t||0)>268435455||t<0?function(t,e){let i,r;t>=0?(i=t%4294967296|0,r=t/4294967296|0):(i=~(-t%4294967296),r=~(-t/4294967296),4294967295^i?i=i+1|0:(i=0,r=r+1|0));if(t>=0x10000000000000000||t<-0x10000000000000000)throw new Error("Given varint doesn't fit into 10 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