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/*! For license information please see bundle-worker-image-decoder.js.LICENSE.txt */
(()=>{"use strict";function t(t){let e=t.length;for(;--e>=0;)t[e]=0}const e=new Uint8Array([0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0]),i=new Uint8Array([0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13]),n=new Uint8Array([0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,3,7]),r=new Uint8Array([16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15]),a=new Array(576);t(a);const s=new Array(60);t(s);const o=new Array(512);t(o);const h=new Array(256);t(h);const l=new Array(29);t(l);const d=new Array(30);function c(t,e,i,n,r){this.static_tree=t,this.extra_bits=e,this.extra_base=i,this.elems=n,this.max_length=r,this.has_stree=t&&t.length}let f,u,_;function p(t,e){this.dyn_tree=t,this.max_code=0,this.stat_desc=e}t(d);const w=t=>t<256?o[t]:o[256+(t>>>7)],b=(t,e)=>{t.pending_buf[t.pending++]=255&e,t.pending_buf[t.pending++]=e>>>8&255},g=(t,e,i)=>{t.bi_valid>16-i?(t.bi_buf|=e<<t.bi_valid&65535,b(t,t.bi_buf),t.bi_buf=e>>16-t.bi_valid,t.bi_valid+=i-16):(t.bi_buf|=e<<t.bi_valid&65535,t.bi_valid+=i)},m=(t,e,i)=>{g(t,i[2*e],i[2*e+1])},y=(t,e)=>{let i=0;do{i|=1&t,t>>>=1,i<<=1}while(--e>0);return i>>>1},k=(t,e,i)=>{const n=new Array(16);let r,a,s=0;for(r=1;r<=15;r++)n[r]=s=s+i[r-1]<<1;for(a=0;a<=e;a++){let e=t[2*a+1];0!==e&&(t[2*a]=y(n[e]++,e))}},v=t=>{let e;for(e=0;e<286;e++)t.dyn_ltree[2*e]=0;for(e=0;e<30;e++)t.dyn_dtree[2*e]=0;for(e=0;e<19;e++)t.bl_tree[2*e]=0;t.dyn_ltree[512]=1,t.opt_len=t.static_len=0,t.last_lit=t.matches=0},x=t=>{t.bi_valid>8?b(t,t.bi_buf):t.bi_valid>0&&(t.pending_buf[t.pending++]=t.bi_buf),t.bi_buf=0,t.bi_valid=0},A=(t,e,i,n)=>{const r=2*e,a=2*i;return t[r]<t[a]||t[r]===t[a]&&n[e]<=n[i]},U=(t,e,i)=>{const n=t.heap[i];let r=i<<1;for(;r<=t.heap_len&&(r<t.heap_len&&A(e,t.heap[r+1],t.heap[r],t.depth)&&r++,!A(e,n,t.heap[r],t.depth));)t.heap[i]=t.heap[r],i=r,r<<=1;t.heap[i]=n},E=(t,n,r)=>{let a,s,o,c,f=0;if(0!==t.last_lit)do{a=t.pending_buf[t.d_buf+2*f]<<8|t.pending_buf[t.d_buf+2*f+1],s=t.pending_buf[t.l_buf+f],f++,0===a?m(t,s,n):(o=h[s],m(t,o+256+1,n),c=e[o],0!==c&&(s-=l[o],g(t,s,c)),a--,o=w(a),m(t,o,r),c=i[o],0!==c&&(a-=d[o],g(t,a,c)))}while(f<t.last_lit);m(t,256,n)},I=(t,e)=>{const i=e.dyn_tree,n=e.stat_desc.static_tree,r=e.stat_desc.has_stree,a=e.stat_desc.elems;let s,o,h,l=-1;for(t.heap_len=0,t.heap_max=573,s=0;s<a;s++)0!==i[2*s]?(t.heap[++t.heap_len]=l=s,t.depth[s]=0):i[2*s+1]=0;for(;t.heap_len<2;)h=t.heap[++t.heap_len]=l<2?++l:0,i[2*h]=1,t.depth[h]=0,t.opt_len--,r&&(t.static_len-=n[2*h+1]);for(e.max_code=l,s=t.heap_len>>1;s>=1;s--)U(t,i,s);h=a;do{s=t.heap[1],t.heap[1]=t.heap[t.heap_len--],U(t,i,1),o=t.heap[1],t.heap[--t.heap_max]=s,t.heap[--t.heap_max]=o,i[2*h]=i[2*s]+i[2*o],t.depth[h]=(t.depth[s]>=t.depth[o]?t.depth[s]:t.depth[o])+1,i[2*s+1]=i[2*o+1]=h,t.heap[1]=h++,U(t,i,1)}while(t.heap_len>=2);t.heap[--t.heap_max]=t.heap[1],((t,e)=>{const i=e.dyn_tree,n=e.max_code,r=e.stat_desc.static_tree,a=e.stat_desc.has_stree,s=e.stat_desc.extra_bits,o=e.stat_desc.extra_base,h=e.stat_desc.max_length;let l,d,c,f,u,_,p=0;for(f=0;f<=15;f++)t.bl_count[f]=0;for(i[2*t.heap[t.heap_max]+1]=0,l=t.heap_max+1;l<573;l++)d=t.heap[l],f=i[2*i[2*d+1]+1]+1,f>h&&(f=h,p++),i[2*d+1]=f,d>n||(t.bl_count[f]++,u=0,d>=o&&(u=s[d-o]),_=i[2*d],t.opt_len+=_*(f+u),a&&(t.static_len+=_*(r[2*d+1]+u)));if(0!==p){do{for(f=h-1;0===t.bl_count[f];)f--;t.bl_count[f]--,t.bl_count[f+1]+=2,t.bl_count[h]--,p-=2}while(p>0);for(f=h;0!==f;f--)for(d=t.bl_count[f];0!==d;)c=t.heap[--l],c>n||(i[2*c+1]!==f&&(t.opt_len+=(f-i[2*c+1])*i[2*c],i[2*c+1]=f),d--)}})(t,e),k(i,l,t.bl_count)},z=(t,e,i)=>{let n,r,a=-1,s=e[1],o=0,h=7,l=4;for(0===s&&(h=138,l=3),e[2*(i+1)+1]=65535,n=0;n<=i;n++)r=s,s=e[2*(n+1)+1],++o<h&&r===s||(o<l?t.bl_tree[2*r]+=o:0!==r?(r!==a&&t.bl_tree[2*r]++,t.bl_tree[32]++):o<=10?t.bl_tree[34]++:t.bl_tree[36]++,o=0,a=r,0===s?(h=138,l=3):r===s?(h=6,l=3):(h=7,l=4))},S=(t,e,i)=>{let n,r,a=-1,s=e[1],o=0,h=7,l=4;for(0===s&&(h=138,l=3),n=0;n<=i;n++)if(r=s,s=e[2*(n+1)+1],!(++o<h&&r===s)){if(o<l)do{m(t,r,t.bl_tree)}while(0!=--o);else 0!==r?(r!==a&&(m(t,r,t.bl_tree),o--),m(t,16,t.bl_tree),g(t,o-3,2)):o<=10?(m(t,17,t.bl_tree),g(t,o-3,3)):(m(t,18,t.bl_tree),g(t,o-11,7));o=0,a=r,0===s?(h=138,l=3):r===s?(h=6,l=3):(h=7,l=4)}};let C=!1;const T=(t,e,i,n)=>{g(t,0+(n?1:0),3),((t,e,i,n)=>{x(t),b(t,i),b(t,~i),t.pending_buf.set(t.window.subarray(e,e+i),t.pending),t.pending+=i})(t,e,i)};var R={_tr_init:t=>{C||((()=>{let t,r,p,w,b;const g=new Array(16);for(p=0,w=0;w<28;w++)for(l[w]=p,t=0;t<1<<e[w];t++)h[p++]=w;for(h[p-1]=w,b=0,w=0;w<16;w++)for(d[w]=b,t=0;t<1<<i[w];t++)o[b++]=w;for(b>>=7;w<30;w++)for(d[w]=b<<7,t=0;t<1<<i[w]-7;t++)o[256+b++]=w;for(r=0;r<=15;r++)g[r]=0;for(t=0;t<=143;)a[2*t+1]=8,t++,g[8]++;for(;t<=255;)a[2*t+1]=9,t++,g[9]++;for(;t<=279;)a[2*t+1]=7,t++,g[7]++;for(;t<=287;)a[2*t+1]=8,t++,g[8]++;for(k(a,287,g),t=0;t<30;t++)s[2*t+1]=5,s[2*t]=y(t,5);f=new c(a,e,257,286,15),u=new c(s,i,0,30,15),_=new c(new Array(0),n,0,19,7)})(),C=!0),t.l_desc=new p(t.dyn_ltree,f),t.d_desc=new p(t.dyn_dtree,u),t.bl_desc=new p(t.bl_tree,_),t.bi_buf=0,t.bi_valid=0,v(t)},_tr_stored_block:T,_tr_flush_block:(t,e,i,n)=>{let o,h,l=0;t.level>0?(2===t.strm.data_type&&(t.strm.data_type=(t=>{let e,i=4093624447;for(e=0;e<=31;e++,i>>>=1)if(1&i&&0!==t.dyn_ltree[2*e])return 0;if(0!==t.dyn_ltree[18]||0!==t.dyn_ltree[20]||0!==t.dyn_ltree[26])return 1;for(e=32;e<256;e++)if(0!==t.dyn_ltree[2*e])return 1;return 0})(t)),I(t,t.l_desc),I(t,t.d_desc),l=(t=>{let e;for(z(t,t.dyn_ltree,t.l_desc.max_code),z(t,t.dyn_dtree,t.d_desc.max_code),I(t,t.bl_desc),e=18;e>=3&&0===t.bl_tree[2*r[e]+1];e--);return t.opt_len+=3*(e+1)+5+5+4,e})(t),o=t.opt_len+3+7>>>3,h=t.static_len+3+7>>>3,h<=o&&(o=h)):o=h=i+5,i+4<=o&&-1!==e?T(t,e,i,n):4===t.strategy||h===o?(g(t,2+(n?1:0),3),E(t,a,s)):(g(t,4+(n?1:0),3),((t,e,i,n)=>{let a;for(g(t,e-257,5),g(t,i-1,5),g(t,n-4,4),a=0;a<n;a++)g(t,t.bl_tree[2*r[a]+1],3);S(t,t.dyn_ltree,e-1),S(t,t.dyn_dtree,i-1)})(t,t.l_desc.max_code+1,t.d_desc.max_code+1,l+1),E(t,t.dyn_ltree,t.dyn_dtree)),v(t),n&&x(t)},_tr_tally:(t,e,i)=>(t.pending_buf[t.d_buf+2*t.last_lit]=e>>>8&255,t.pending_buf[t.d_buf+2*t.last_lit+1]=255&e,t.pending_buf[t.l_buf+t.last_lit]=255&i,t.last_lit++,0===e?t.dyn_ltree[2*i]++:(t.matches++,e--,t.dyn_ltree[2*(h[i]+256+1)]++,t.dyn_dtree[2*w(e)]++),t.last_lit===t.lit_bufsize-1),_tr_align:t=>{g(t,2,3),m(t,256,a),(t=>{16===t.bi_valid?(b(t,t.bi_buf),t.bi_buf=0,t.bi_valid=0):t.bi_valid>=8&&(t.pending_buf[t.pending++]=255&t.bi_buf,t.bi_buf>>=8,t.bi_valid-=8)})(t)}},F=(t,e,i,n)=>{let r=65535&t|0,a=t>>>16&65535|0,s=0;for(;0!==i;){s=i>2e3?2e3:i,i-=s;do{r=r+e[n++]|0,a=a+r|0}while(--s);r%=65521,a%=65521}return r|a<<16|0};const B=new Uint32Array((()=>{let t,e=[];for(var i=0;i<256;i++){t=i;for(var n=0;n<8;n++)t=1&t?3988292384^t>>>1:t>>>1;e[i]=t}return e})());var N=(t,e,i,n)=>{const r=B,a=n+i;t^=-1;for(let i=n;i<a;i++)t=t>>>8^r[255&(t^e[i])];return-1^t},D={2:"need dictionary",1:"stream end",0:"","-1":"file error","-2":"stream error","-3":"data error","-4":"insufficient memory","-5":"buffer error","-6":"incompatible version"},Z={Z_NO_FLUSH:0,Z_PARTIAL_FLUSH:1,Z_SYNC_FLUSH:2,Z_FULL_FLUSH:3,Z_FINISH:4,Z_BLOCK:5,Z_TREES:6,Z_OK:0,Z_STREAM_END:1,Z_NEED_DICT:2,Z_ERRNO:-1,Z_STREAM_ERROR:-2,Z_DATA_ERROR:-3,Z_MEM_ERROR:-4,Z_BUF_ERROR:-5,Z_NO_COMPRESSION:0,Z_BEST_SPEED:1,Z_BEST_COMPRESSION:9,Z_DEFAULT_COMPRESSION:-1,Z_FILTERED:1,Z_HUFFMAN_ONLY:2,Z_RLE:3,Z_FIXED:4,Z_DEFAULT_STRATEGY:0,Z_BINARY:0,Z_TEXT:1,Z_UNKNOWN:2,Z_DEFLATED:8};const{_tr_init:L,_tr_stored_block:O,_tr_flush_block:$,_tr_tally:V,_tr_align:M}=R,{Z_NO_FLUSH:H,Z_PARTIAL_FLUSH:P,Z_FULL_FLUSH:j,Z_FINISH:G,Z_BLOCK:K,Z_OK:X,Z_STREAM_END:Y,Z_STREAM_ERROR:q,Z_DATA_ERROR:W,Z_BUF_ERROR:J,Z_DEFAULT_COMPRESSION:Q,Z_FILTERED:tt,Z_HUFFMAN_ONLY:et,Z_RLE:it,Z_FIXED:nt,Z_DEFAULT_STRATEGY:rt,Z_UNKNOWN:at,Z_DEFLATED:st}=Z,ot=258,ht=262,lt=103,dt=113,ct=666,ft=(t,e)=>(t.msg=D[e],e),ut=t=>(t<<1)-(t>4?9:0),_t=t=>{let e=t.length;for(;--e>=0;)t[e]=0};let pt=(t,e,i)=>(e<<t.hash_shift^i)&t.hash_mask;const wt=t=>{const e=t.state;let i=e.pending;i>t.avail_out&&(i=t.avail_out),0!==i&&(t.output.set(e.pending_buf.subarray(e.pending_out,e.pending_out+i),t.next_out),t.next_out+=i,e.pending_out+=i,t.total_out+=i,t.avail_out-=i,e.pending-=i,0===e.pending&&(e.pending_out=0))},bt=(t,e)=>{$(t,t.block_start>=0?t.block_start:-1,t.strstart-t.block_start,e),t.block_start=t.strstart,wt(t.strm)},gt=(t,e)=>{t.pending_buf[t.pending++]=e},mt=(t,e)=>{t.pending_buf[t.pending++]=e>>>8&255,t.pending_buf[t.pending++]=255&e},yt=(t,e,i,n)=>{let r=t.avail_in;return r>n&&(r=n),0===r?0:(t.avail_in-=r,e.set(t.input.subarray(t.next_in,t.next_in+r),i),1===t.state.wrap?t.adler=F(t.adler,e,r,i):2===t.state.wrap&&(t.adler=N(t.adler,e,r,i)),t.next_in+=r,t.total_in+=r,r)},kt=(t,e)=>{let i,n,r=t.max_chain_length,a=t.strstart,s=t.prev_length,o=t.nice_match;const h=t.strstart>t.w_size-ht?t.strstart-(t.w_size-ht):0,l=t.window,d=t.w_mask,c=t.prev,f=t.strstart+ot;let u=l[a+s-1],_=l[a+s];t.prev_length>=t.good_match&&(r>>=2),o>t.lookahead&&(o=t.lookahead);do{if(i=e,l[i+s]===_&&l[i+s-1]===u&&l[i]===l[a]&&l[++i]===l[a+1]){a+=2,i++;do{}while(l[++a]===l[++i]&&l[++a]===l[++i]&&l[++a]===l[++i]&&l[++a]===l[++i]&&l[++a]===l[++i]&&l[++a]===l[++i]&&l[++a]===l[++i]&&l[++a]===l[++i]&&a<f);if(n=ot-(f-a),a=f-ot,n>s){if(t.match_start=e,s=n,n>=o)break;u=l[a+s-1],_=l[a+s]}}}while((e=c[e&d])>h&&0!=--r);return s<=t.lookahead?s:t.lookahead},vt=t=>{const e=t.w_size;let i,n,r,a,s;do{if(a=t.window_size-t.lookahead-t.strstart,t.strstart>=e+(e-ht)){t.window.set(t.window.subarray(e,e+e),0),t.match_start-=e,t.strstart-=e,t.block_start-=e,n=t.hash_size,i=n;do{r=t.head[--i],t.head[i]=r>=e?r-e:0}while(--n);n=e,i=n;do{r=t.prev[--i],t.prev[i]=r>=e?r-e:0}while(--n);a+=e}if(0===t.strm.avail_in)break;if(n=yt(t.strm,t.window,t.strstart+t.lookahead,a),t.lookahead+=n,t.lookahead+t.insert>=3)for(s=t.strstart-t.insert,t.ins_h=t.window[s],t.ins_h=pt(t,t.ins_h,t.window[s+1]);t.insert&&(t.ins_h=pt(t,t.ins_h,t.window[s+3-1]),t.prev[s&t.w_mask]=t.head[t.ins_h],t.head[t.ins_h]=s,s++,t.insert--,!(t.lookahead+t.insert<3)););}while(t.lookahead<ht&&0!==t.strm.avail_in)},xt=(t,e)=>{let i,n;for(;;){if(t.lookahead<ht){if(vt(t),t.lookahead<ht&&e===H)return 1;if(0===t.lookahead)break}if(i=0,t.lookahead>=3&&(t.ins_h=pt(t,t.ins_h,t.window[t.strstart+3-1]),i=t.prev[t.strstart&t.w_mask]=t.head[t.ins_h],t.head[t.ins_h]=t.strstart),0!==i&&t.strstart-i<=t.w_size-ht&&(t.match_length=kt(t,i)),t.match_length>=3)if(n=V(t,t.strstart-t.match_start,t.match_length-3),t.lookahead-=t.match_length,t.match_length<=t.max_lazy_match&&t.lookahead>=3){t.match_length--;do{t.strstart++,t.ins_h=pt(t,t.ins_h,t.window[t.strstart+3-1]),i=t.prev[t.strstart&t.w_mask]=t.head[t.ins_h],t.head[t.ins_h]=t.strstart}while(0!=--t.match_length);t.strstart++}else t.strstart+=t.match_length,t.match_length=0,t.ins_h=t.window[t.strstart],t.ins_h=pt(t,t.ins_h,t.window[t.strstart+1]);else n=V(t,0,t.window[t.strstart]),t.lookahead--,t.strstart++;if(n&&(bt(t,!1),0===t.strm.avail_out))return 1}return t.insert=t.strstart<2?t.strstart:2,e===G?(bt(t,!0),0===t.strm.avail_out?3:4):t.last_lit&&(bt(t,!1),0===t.strm.avail_out)?1:2},At=(t,e)=>{let i,n,r;for(;;){if(t.lookahead<ht){if(vt(t),t.lookahead<ht&&e===H)return 1;if(0===t.lookahead)break}if(i=0,t.lookahead>=3&&(t.ins_h=pt(t,t.ins_h,t.window[t.strstart+3-1]),i=t.prev[t.strstart&t.w_mask]=t.head[t.ins_h],t.head[t.ins_h]=t.strstart),t.prev_length=t.match_length,t.prev_match=t.match_start,t.match_length=2,0!==i&&t.prev_length<t.max_lazy_match&&t.strstart-i<=t.w_size-ht&&(t.match_length=kt(t,i),t.match_length<=5&&(t.strategy===tt||3===t.match_length&&t.strstart-t.match_start>4096)&&(t.match_length=2)),t.prev_length>=3&&t.match_length<=t.prev_length){r=t.strstart+t.lookahead-3,n=V(t,t.strstart-1-t.prev_match,t.prev_length-3),t.lookahead-=t.prev_length-1,t.prev_length-=2;do{++t.strstart<=r&&(t.ins_h=pt(t,t.ins_h,t.window[t.strstart+3-1]),i=t.prev[t.strstart&t.w_mask]=t.head[t.ins_h],t.head[t.ins_h]=t.strstart)}while(0!=--t.prev_length);if(t.match_available=0,t.match_length=2,t.strstart++,n&&(bt(t,!1),0===t.strm.avail_out))return 1}else if(t.match_available){if(n=V(t,0,t.window[t.strstart-1]),n&&bt(t,!1),t.strstart++,t.lookahead--,0===t.strm.avail_out)return 1}else t.match_available=1,t.strstart++,t.lookahead--}return t.match_available&&(n=V(t,0,t.window[t.strstart-1]),t.match_available=0),t.insert=t.strstart<2?t.strstart:2,e===G?(bt(t,!0),0===t.strm.avail_out?3:4):t.last_lit&&(bt(t,!1),0===t.strm.avail_out)?1:2};function Ut(t,e,i,n,r){this.good_length=t,this.max_lazy=e,this.nice_length=i,this.max_chain=n,this.func=r}const Et=[new Ut(0,0,0,0,((t,e)=>{let i=65535;for(i>t.pending_buf_size-5&&(i=t.pending_buf_size-5);;){if(t.lookahead<=1){if(vt(t),0===t.lookahead&&e===H)return 1;if(0===t.lookahead)break}t.strstart+=t.lookahead,t.lookahead=0;const n=t.block_start+i;if((0===t.strstart||t.strstart>=n)&&(t.lookahead=t.strstart-n,t.strstart=n,bt(t,!1),0===t.strm.avail_out))return 1;if(t.strstart-t.block_start>=t.w_size-ht&&(bt(t,!1),0===t.strm.avail_out))return 1}return t.insert=0,e===G?(bt(t,!0),0===t.strm.avail_out?3:4):(t.strstart>t.block_start&&(bt(t,!1),t.strm.avail_out),1)})),new Ut(4,4,8,4,xt),new Ut(4,5,16,8,xt),new Ut(4,6,32,32,xt),new Ut(4,4,16,16,At),new Ut(8,16,32,32,At),new Ut(8,16,128,128,At),new Ut(8,32,128,256,At),new Ut(32,128,258,1024,At),new Ut(32,258,258,4096,At)];function It(){this.strm=null,this.status=0,this.pending_buf=null,this.pending_buf_size=0,this.pending_out=0,this.pending=0,this.wrap=0,this.gzhead=null,this.gzindex=0,this.method=st,this.last_flush=-1,this.w_size=0,this.w_bits=0,this.w_mask=0,this.window=null,this.window_size=0,this.prev=null,this.head=null,this.ins_h=0,this.hash_size=0,this.hash_bits=0,this.hash_mask=0,this.hash_shift=0,this.block_start=0,this.match_length=0,this.prev_match=0,this.match_available=0,this.strstart=0,this.match_start=0,this.lookahead=0,this.prev_length=0,this.max_chain_length=0,this.max_lazy_match=0,this.level=0,this.strategy=0,this.good_match=0,this.nice_match=0,this.dyn_ltree=new Uint16Array(1146),this.dyn_dtree=new Uint16Array(122),this.bl_tree=new Uint16Array(78),_t(this.dyn_ltree),_t(this.dyn_dtree),_t(this.bl_tree),this.l_desc=null,this.d_desc=null,this.bl_desc=null,this.bl_count=new Uint16Array(16),this.heap=new Uint16Array(573),_t(this.heap),this.heap_len=0,this.heap_max=0,this.depth=new Uint16Array(573),_t(this.depth),this.l_buf=0,this.lit_bufsize=0,this.last_lit=0,this.d_buf=0,this.opt_len=0,this.static_len=0,this.matches=0,this.insert=0,this.bi_buf=0,this.bi_valid=0}const zt=t=>{if(!t||!t.state)return ft(t,q);t.total_in=t.total_out=0,t.data_type=at;const e=t.state;return e.pending=0,e.pending_out=0,e.wrap<0&&(e.wrap=-e.wrap),e.status=e.wrap?42:dt,t.adler=2===e.wrap?0:1,e.last_flush=H,L(e),X},St=t=>{const e=zt(t);var i;return e===X&&((i=t.state).window_size=2*i.w_size,_t(i.head),i.max_lazy_match=Et[i.level].max_lazy,i.good_match=Et[i.level].good_length,i.nice_match=Et[i.level].nice_length,i.max_chain_length=Et[i.level].max_chain,i.strstart=0,i.block_start=0,i.lookahead=0,i.insert=0,i.match_length=i.prev_length=2,i.match_available=0,i.ins_h=0),e},Ct=(t,e,i,n,r,a)=>{if(!t)return q;let s=1;if(e===Q&&(e=6),n<0?(s=0,n=-n):n>15&&(s=2,n-=16),r<1||r>9||i!==st||n<8||n>15||e<0||e>9||a<0||a>nt)return ft(t,q);8===n&&(n=9);const o=new It;return t.state=o,o.strm=t,o.wrap=s,o.gzhead=null,o.w_bits=n,o.w_size=1<<o.w_bits,o.w_mask=o.w_size-1,o.hash_bits=r+7,o.hash_size=1<<o.hash_bits,o.hash_mask=o.hash_size-1,o.hash_shift=~~((o.hash_bits+3-1)/3),o.window=new Uint8Array(2*o.w_size),o.head=new Uint16Array(o.hash_size),o.prev=new Uint16Array(o.w_size),o.lit_bufsize=1<<r+6,o.pending_buf_size=4*o.lit_bufsize,o.pending_buf=new 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Xt(t){this.options=Ft.assign({level:jt,method:Kt,chunkSize:16384,windowBits:15,memLevel:8,strategy:Gt},t||{});let e=this.options;e.raw&&e.windowBits>0?e.windowBits=-e.windowBits:e.gzip&&e.windowBits>0&&e.windowBits<16&&(e.windowBits+=16),this.err=0,this.msg="",this.ended=!1,this.chunks=[],this.strm=new Zt,this.strm.avail_out=0;let i=Tt.deflateInit2(this.strm,e.level,e.method,e.windowBits,e.memLevel,e.strategy);if(i!==Ht)throw new Error(D[i]);if(e.header&&Tt.deflateSetHeader(this.strm,e.header),e.dictionary){let t;if(t="string"==typeof e.dictionary?Dt.string2buf(e.dictionary):"[object ArrayBuffer]"===Lt.call(e.dictionary)?new Uint8Array(e.dictionary):e.dictionary,i=Tt.deflateSetDictionary(this.strm,t),i!==Ht)throw new Error(D[i]);this._dict_set=!0}}function Yt(t,e){const i=new Xt(e);if(i.push(t,!0),i.err)throw i.msg||D[i.err];return i.result}Xt.prototype.push=function(t,e){const i=this.strm,n=this.options.chunkSize;let r,a;if(this.ended)return!1;for(a=e===~~e?e:!0===e?Mt:Ot,"string"==typeof t?i.input=Dt.string2buf(t):"[object ArrayBuffer]"===Lt.call(t)?i.input=new Uint8Array(t):i.input=t,i.next_in=0,i.avail_in=i.input.length;;)if(0===i.avail_out&&(i.output=new Uint8Array(n),i.next_out=0,i.avail_out=n),(a===$t||a===Vt)&&i.avail_out<=6)this.onData(i.output.subarray(0,i.next_out)),i.avail_out=0;else{if(r=Tt.deflate(i,a),r===Pt)return i.next_out>0&&this.onData(i.output.subarray(0,i.next_out)),r=Tt.deflateEnd(this.strm),this.onEnd(r),this.ended=!0,r===Ht;if(0!==i.avail_out){if(a>0&&i.next_out>0)this.onData(i.output.subarray(0,i.next_out)),i.avail_out=0;else if(0===i.avail_in)break}else this.onData(i.output)}return!0},Xt.prototype.onData=function(t){this.chunks.push(t)},Xt.prototype.onEnd=function(t){t===Ht&&(this.result=Ft.flattenChunks(this.chunks)),this.chunks=[],this.err=t,this.msg=this.strm.msg};var qt={Deflate:Xt,deflate:Yt,deflateRaw:function(t,e){return(e=e||{}).raw=!0,Yt(t,e)},gzip:function(t,e){return(e=e||{}).gzip=!0,Yt(t,e)},constants:Z},Wt=function(t,e){let i,n,r,a,s,o,h,l,d,c,f,u,_,p,w,b,g,m,y,k,v,x,A,U;const E=t.state;i=t.next_in,A=t.input,n=i+(t.avail_in-5),r=t.next_out,U=t.output,a=r-(e-t.avail_out),s=r+(t.avail_out-257),o=E.dmax,h=E.wsize,l=E.whave,d=E.wnext,c=E.window,f=E.hold,u=E.bits,_=E.lencode,p=E.distcode,w=(1<<E.lenbits)-1,b=(1<<E.distbits)-1;t:do{u<15&&(f+=A[i++]<<u,u+=8,f+=A[i++]<<u,u+=8),g=_[f&w];e:for(;;){if(m=g>>>24,f>>>=m,u-=m,m=g>>>16&255,0===m)U[r++]=65535&g;else{if(!(16&m)){if(0==(64&m)){g=_[(65535&g)+(f&(1<<m)-1)];continue e}if(32&m){E.mode=12;break t}t.msg="invalid literal/length code",E.mode=30;break t}y=65535&g,m&=15,m&&(u<m&&(f+=A[i++]<<u,u+=8),y+=f&(1<<m)-1,f>>>=m,u-=m),u<15&&(f+=A[i++]<<u,u+=8,f+=A[i++]<<u,u+=8),g=p[f&b];i:for(;;){if(m=g>>>24,f>>>=m,u-=m,m=g>>>16&255,!(16&m)){if(0==(64&m)){g=p[(65535&g)+(f&(1<<m)-1)];continue i}t.msg="invalid distance code",E.mode=30;break t}if(k=65535&g,m&=15,u<m&&(f+=A[i++]<<u,u+=8,u<m&&(f+=A[i++]<<u,u+=8)),k+=f&(1<<m)-1,k>o){t.msg="invalid distance too far back",E.mode=30;break t}if(f>>>=m,u-=m,m=r-a,k>m){if(m=k-m,m>l&&E.sane){t.msg="invalid distance too far back",E.mode=30;break t}if(v=0,x=c,0===d){if(v+=h-m,m<y){y-=m;do{U[r++]=c[v++]}while(--m);v=r-k,x=U}}else if(d<m){if(v+=h+d-m,m-=d,m<y){y-=m;do{U[r++]=c[v++]}while(--m);if(v=0,d<y){m=d,y-=m;do{U[r++]=c[v++]}while(--m);v=r-k,x=U}}}else if(v+=d-m,m<y){y-=m;do{U[r++]=c[v++]}while(--m);v=r-k,x=U}for(;y>2;)U[r++]=x[v++],U[r++]=x[v++],U[r++]=x[v++],y-=3;y&&(U[r++]=x[v++],y>1&&(U[r++]=x[v++]))}else{v=r-k;do{U[r++]=U[v++],U[r++]=U[v++],U[r++]=U[v++],y-=3}while(y>2);y&&(U[r++]=U[v++],y>1&&(U[r++]=U[v++]))}break}}break}}while(i<n&&r<s);y=u>>3,i-=y,u-=y<<3,f&=(1<<u)-1,t.next_in=i,t.next_out=r,t.avail_in=i<n?n-i+5:5-(i-n),t.avail_out=r<s?s-r+257:257-(r-s),E.hold=f,E.bits=u};const Jt=new Uint16Array([3,4,5,6,7,8,9,10,11,13,15,17,19,23,27,31,35,43,51,59,67,83,99,115,131,163,195,227,258,0,0]),Qt=new Uint8Array([16,16,16,16,16,16,16,16,17,17,17,17,18,18,18,18,19,19,19,19,20,20,20,20,21,21,21,21,16,72,78]),te=new Uint16Array([1,2,3,4,5,7,9,13,17,25,33,49,65,97,129,193,257,385,513,769,1025,1537,2049,3073,4097,6145,8193,12289,16385,24577,0,0]),ee=new Uint8Array([16,16,16,16,17,17,18,18,19,19,20,20,21,21,22,22,23,23,24,24,25,25,26,26,27,27,28,28,29,29,64,64]);var ie=(t,e,i,n,r,a,s,o)=>{const h=o.bits;let l,d,c,f,u,_,p=0,w=0,b=0,g=0,m=0,y=0,k=0,v=0,x=0,A=0,U=null,E=0;const I=new Uint16Array(16),z=new Uint16Array(16);let S,C,T,R=null,F=0;for(p=0;p<=15;p++)I[p]=0;for(w=0;w<n;w++)I[e[i+w]]++;for(m=h,g=15;g>=1&&0===I[g];g--);if(m>g&&(m=g),0===g)return r[a++]=20971520,r[a++]=20971520,o.bits=1,0;for(b=1;b<g&&0===I[b];b++);for(m<b&&(m=b),v=1,p=1;p<=15;p++)if(v<<=1,v-=I[p],v<0)return-1;if(v>0&&(0===t||1!==g))return-1;for(z[1]=0,p=1;p<15;p++)z[p+1]=z[p]+I[p];for(w=0;w<n;w++)0!==e[i+w]&&(s[z[e[i+w]]++]=w);if(0===t?(U=R=s,_=19):1===t?(U=Jt,E-=257,R=Qt,F-=257,_=256):(U=te,R=ee,_=-1),A=0,w=0,p=b,u=a,y=m,k=0,c=-1,x=1<<m,f=x-1,1===t&&x>852||2===t&&x>592)return 1;for(;;){S=p-k,s[w]<_?(C=0,T=s[w]):s[w]>_?(C=R[F+s[w]],T=U[E+s[w]]):(C=96,T=0),l=1<<p-k,d=1<<y,b=d;do{d-=l,r[u+(A>>k)+d]=S<<24|C<<16|T|0}while(0!==d);for(l=1<<p-1;A&l;)l>>=1;if(0!==l?(A&=l-1,A+=l):A=0,w++,0==--I[p]){if(p===g)break;p=e[i+s[w]]}if(p>m&&(A&f)!==c){for(0===k&&(k=m),u+=b,y=p-k,v=1<<y;y+k<g&&(v-=I[y+k],!(v<=0));)y++,v<<=1;if(x+=1<<y,1===t&&x>852||2===t&&x>592)return 1;c=A&f,r[c]=m<<24|y<<16|u-a|0}}return 0!==A&&(r[u+A]=p-k<<24|64<<16|0),o.bits=m,0};const{Z_FINISH:ne,Z_BLOCK:re,Z_TREES:ae,Z_OK:se,Z_STREAM_END:oe,Z_NEED_DICT:he,Z_STREAM_ERROR:le,Z_DATA_ERROR:de,Z_MEM_ERROR:ce,Z_BUF_ERROR:fe,Z_DEFLATED:ue}=Z,_e=12,pe=30,we=t=>(t>>>24&255)+(t>>>8&65280)+((65280&t)<<8)+((255&t)<<24);function be(){this.mode=0,this.last=!1,this.wrap=0,this.havedict=!1,this.flags=0,this.dmax=0,this.check=0,this.total=0,this.head=null,this.wbits=0,this.wsize=0,this.whave=0,this.wnext=0,this.window=null,this.hold=0,this.bits=0,this.length=0,this.offset=0,this.extra=0,this.lencode=null,this.distcode=null,this.lenbits=0,this.distbits=0,this.ncode=0,this.nlen=0,this.ndist=0,this.have=0,this.next=null,this.lens=new Uint16Array(320),this.work=new Uint16Array(288),this.lendyn=null,this.distdyn=null,this.sane=0,this.back=0,this.was=0}const ge=t=>{if(!t||!t.state)return le;const e=t.state;return t.total_in=t.total_out=e.total=0,t.msg="",e.wrap&&(t.adler=1&e.wrap),e.mode=1,e.last=0,e.havedict=0,e.dmax=32768,e.head=null,e.hold=0,e.bits=0,e.lencode=e.lendyn=new Int32Array(852),e.distcode=e.distdyn=new Int32Array(592),e.sane=1,e.back=-1,se},me=t=>{if(!t||!t.state)return le;const e=t.state;return e.wsize=0,e.whave=0,e.wnext=0,ge(t)},ye=(t,e)=>{let i;if(!t||!t.state)return le;const n=t.state;return e<0?(i=0,e=-e):(i=1+(e>>4),e<48&&(e&=15)),e&&(e<8||e>15)?le:(null!==n.window&&n.wbits!==e&&(n.window=null),n.wrap=i,n.wbits=e,me(t))},ke=(t,e)=>{if(!t)return le;const i=new be;t.state=i,i.window=null;const n=ye(t,e);return n!==se&&(t.state=null),n};let ve,xe,Ae=!0;const Ue=t=>{if(Ae){ve=new Int32Array(512),xe=new Int32Array(32);let e=0;for(;e<144;)t.lens[e++]=8;for(;e<256;)t.lens[e++]=9;for(;e<280;)t.lens[e++]=7;for(;e<288;)t.lens[e++]=8;for(ie(1,t.lens,0,288,ve,0,t.work,{bits:9}),e=0;e<32;)t.lens[e++]=5;ie(2,t.lens,0,32,xe,0,t.work,{bits:5}),Ae=!1}t.lencode=ve,t.lenbits=9,t.distcode=xe,t.distbits=5},Ee=(t,e,i,n)=>{let r;const a=t.state;return null===a.window&&(a.wsize=1<<a.wbits,a.wnext=0,a.whave=0,a.window=new Uint8Array(a.wsize)),n>=a.wsize?(a.window.set(e.subarray(i-a.wsize,i),0),a.wnext=0,a.whave=a.wsize):(r=a.wsize-a.wnext,r>n&&(r=n),a.window.set(e.subarray(i-n,i-n+r),a.wnext),(n-=r)?(a.window.set(e.subarray(i-n,i),0),a.wnext=n,a.whave=a.wsize):(a.wnext+=r,a.wnext===a.wsize&&(a.wnext=0),a.whave<a.wsize&&(a.whave+=r))),0};var Ie={inflateReset:me,inflateReset2:ye,inflateResetKeep:ge,inflateInit:t=>ke(t,15),inflateInit2:ke,inflate:(t,e)=>{let i,n,r,a,s,o,h,l,d,c,f,u,_,p,w,b,g,m,y,k,v,x,A=0;const U=new Uint8Array(4);let E,I;const z=new Uint8Array([16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15]);if(!t||!t.state||!t.output||!t.input&&0!==t.avail_in)return le;i=t.state,i.mode===_e&&(i.mode=13),s=t.next_out,r=t.output,h=t.avail_out,a=t.next_in,n=t.input,o=t.avail_in,l=i.hold,d=i.bits,c=o,f=h,x=se;t:for(;;)switch(i.mode){case 1:if(0===i.wrap){i.mode=13;break}for(;d<16;){if(0===o)break t;o--,l+=n[a++]<<d,d+=8}if(2&i.wrap&&35615===l){i.check=0,U[0]=255&l,U[1]=l>>>8&255,i.check=N(i.check,U,2,0),l=0,d=0,i.mode=2;break}if(i.flags=0,i.head&&(i.head.done=!1),!(1&i.wrap)||(((255&l)<<8)+(l>>8))%31){t.msg="incorrect header check",i.mode=pe;break}if((15&l)!==ue){t.msg="unknown compression method",i.mode=pe;break}if(l>>>=4,d-=4,v=8+(15&l),0===i.wbits)i.wbits=v;else if(v>i.wbits){t.msg="invalid window size",i.mode=pe;break}i.dmax=1<<i.wbits,t.adler=i.check=1,i.mode=512&l?10:_e,l=0,d=0;break;case 2:for(;d<16;){if(0===o)break t;o--,l+=n[a++]<<d,d+=8}if(i.flags=l,(255&i.flags)!==ue){t.msg="unknown compression method",i.mode=pe;break}if(57344&i.flags){t.msg="unknown header flags set",i.mode=pe;break}i.head&&(i.head.text=l>>8&1),512&i.flags&&(U[0]=255&l,U[1]=l>>>8&255,i.check=N(i.check,U,2,0)),l=0,d=0,i.mode=3;case 3:for(;d<32;){if(0===o)break t;o--,l+=n[a++]<<d,d+=8}i.head&&(i.head.time=l),512&i.flags&&(U[0]=255&l,U[1]=l>>>8&255,U[2]=l>>>16&255,U[3]=l>>>24&255,i.check=N(i.check,U,4,0)),l=0,d=0,i.mode=4;case 4:for(;d<16;){if(0===o)break t;o--,l+=n[a++]<<d,d+=8}i.head&&(i.head.xflags=255&l,i.head.os=l>>8),512&i.flags&&(U[0]=255&l,U[1]=l>>>8&255,i.check=N(i.check,U,2,0)),l=0,d=0,i.mode=5;case 5:if(1024&i.flags){for(;d<16;){if(0===o)break t;o--,l+=n[a++]<<d,d+=8}i.length=l,i.head&&(i.head.extra_len=l),512&i.flags&&(U[0]=255&l,U[1]=l>>>8&255,i.check=N(i.check,U,2,0)),l=0,d=0}else i.head&&(i.head.extra=null);i.mode=6;case 6:if(1024&i.flags&&(u=i.length,u>o&&(u=o),u&&(i.head&&(v=i.head.extra_len-i.length,i.head.extra||(i.head.extra=new Uint8Array(i.head.extra_len)),i.head.extra.set(n.subarray(a,a+u),v)),512&i.flags&&(i.check=N(i.check,n,u,a)),o-=u,a+=u,i.length-=u),i.length))break t;i.length=0,i.mode=7;case 7:if(2048&i.flags){if(0===o)break t;u=0;do{v=n[a+u++],i.head&&v&&i.length<65536&&(i.head.name+=String.fromCharCode(v))}while(v&&u<o);if(512&i.flags&&(i.check=N(i.check,n,u,a)),o-=u,a+=u,v)break t}else i.head&&(i.head.name=null);i.length=0,i.mode=8;case 8:if(4096&i.flags){if(0===o)break t;u=0;do{v=n[a+u++],i.head&&v&&i.length<65536&&(i.head.comment+=String.fromCharCode(v))}while(v&&u<o);if(512&i.flags&&(i.check=N(i.check,n,u,a)),o-=u,a+=u,v)break t}else i.head&&(i.head.comment=null);i.mode=9;case 9:if(512&i.flags){for(;d<16;){if(0===o)break t;o--,l+=n[a++]<<d,d+=8}if(l!==(65535&i.check)){t.msg="header crc mismatch",i.mode=pe;break}l=0,d=0}i.head&&(i.head.hcrc=i.flags>>9&1,i.head.done=!0),t.adler=i.check=0,i.mode=_e;break;case 10:for(;d<32;){if(0===o)break t;o--,l+=n[a++]<<d,d+=8}t.adler=i.check=we(l),l=0,d=0,i.mode=11;case 11:if(0===i.havedict)return t.next_out=s,t.avail_out=h,t.next_in=a,t.avail_in=o,i.hold=l,i.bits=d,he;t.adler=i.check=1,i.mode=_e;case _e:if(e===re||e===ae)break t;case 13:if(i.last){l>>>=7&d,d-=7&d,i.mode=27;break}for(;d<3;){if(0===o)break t;o--,l+=n[a++]<<d,d+=8}switch(i.last=1&l,l>>>=1,d-=1,3&l){case 0:i.mode=14;break;case 1:if(Ue(i),i.mode=20,e===ae){l>>>=2,d-=2;break t}break;case 2:i.mode=17;break;case 3:t.msg="invalid block type",i.mode=pe}l>>>=2,d-=2;break;case 14:for(l>>>=7&d,d-=7&d;d<32;){if(0===o)break t;o--,l+=n[a++]<<d,d+=8}if((65535&l)!=(l>>>16^65535)){t.msg="invalid stored block lengths",i.mode=pe;break}if(i.length=65535&l,l=0,d=0,i.mode=15,e===ae)break t;case 15:i.mode=16;case 16:if(u=i.length,u){if(u>o&&(u=o),u>h&&(u=h),0===u)break t;r.set(n.subarray(a,a+u),s),o-=u,a+=u,h-=u,s+=u,i.length-=u;break}i.mode=_e;break;case 17:for(;d<14;){if(0===o)break t;o--,l+=n[a++]<<d,d+=8}if(i.nlen=257+(31&l),l>>>=5,d-=5,i.ndist=1+(31&l),l>>>=5,d-=5,i.ncode=4+(15&l),l>>>=4,d-=4,i.nlen>286||i.ndist>30){t.msg="too many length or distance symbols",i.mode=pe;break}i.have=0,i.mode=18;case 18:for(;i.have<i.ncode;){for(;d<3;){if(0===o)break t;o--,l+=n[a++]<<d,d+=8}i.lens[z[i.have++]]=7&l,l>>>=3,d-=3}for(;i.have<19;)i.lens[z[i.have++]]=0;if(i.lencode=i.lendyn,i.lenbits=7,E={bits:i.lenbits},x=ie(0,i.lens,0,19,i.lencode,0,i.work,E),i.lenbits=E.bits,x){t.msg="invalid code lengths set",i.mode=pe;break}i.have=0,i.mode=19;case 19:for(;i.have<i.nlen+i.ndist;){for(;A=i.lencode[l&(1<<i.lenbits)-1],w=A>>>24,b=A>>>16&255,g=65535&A,!(w<=d);){if(0===o)break t;o--,l+=n[a++]<<d,d+=8}if(g<16)l>>>=w,d-=w,i.lens[i.have++]=g;else{if(16===g){for(I=w+2;d<I;){if(0===o)break t;o--,l+=n[a++]<<d,d+=8}if(l>>>=w,d-=w,0===i.have){t.msg="invalid bit length repeat",i.mode=pe;break}v=i.lens[i.have-1],u=3+(3&l),l>>>=2,d-=2}else if(17===g){for(I=w+3;d<I;){if(0===o)break t;o--,l+=n[a++]<<d,d+=8}l>>>=w,d-=w,v=0,u=3+(7&l),l>>>=3,d-=3}else{for(I=w+7;d<I;){if(0===o)break t;o--,l+=n[a++]<<d,d+=8}l>>>=w,d-=w,v=0,u=11+(127&l),l>>>=7,d-=7}if(i.have+u>i.nlen+i.ndist){t.msg="invalid bit length repeat",i.mode=pe;break}for(;u--;)i.lens[i.have++]=v}}if(i.mode===pe)break;if(0===i.lens[256]){t.msg="invalid code -- missing end-of-block",i.mode=pe;break}if(i.lenbits=9,E={bits:i.lenbits},x=ie(1,i.lens,0,i.nlen,i.lencode,0,i.work,E),i.lenbits=E.bits,x){t.msg="invalid literal/lengths set",i.mode=pe;break}if(i.distbits=6,i.distcode=i.distdyn,E={bits:i.distbits},x=ie(2,i.lens,i.nlen,i.ndist,i.distcode,0,i.work,E),i.distbits=E.bits,x){t.msg="invalid distances set",i.mode=pe;break}if(i.mode=20,e===ae)break t;case 20:i.mode=21;case 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this.endianness===ri?this.readUint24BE():this.readUint24LE()}readUint24LE(){const t=this.dataView.getUint8(this.position),e=this.dataView.getUint8(this.position+1),i=this.dataView.getUint8(this.position+2);return this.position+=3,t|e<<8|i<<16}readUint24BE(){const t=this.dataView.getUint8(this.position),e=this.dataView.getUint8(this.position+1),i=this.dataView.getUint8(this.position+2);return this.position+=3,i|e<<8|t<<16}readUint32(){const t=this.dataView.getUint32(this.position,this.endianness);return this.position+=4,t}readUint32LE(){const t=this.dataView.getUint32(this.position,ai);return this.position+=4,t}readUint32BE(){const t=this.dataView.getUint32(this.position,ri);return this.position+=4,t}readUint8Array(t,e,i){for(let n=0;n<i;n++)t[n+e]=this.readUint8()}readUint16Array(t,e,i){for(let n=0;n<i;n++)t[n+e]=this.readUint16()}readUint32Array(t,e,i){for(let n=0;n<i;n++)t[n+e]=this.readUint32()}readInt8Array(t,e,i){for(let n=0;n<i;n++)t[n+e]=this.readInt8()}readInt16Array(t,e,i){for(let n=0;n<i;n++)t[n+e]=this.readInt16()}readInt32Array(t,e,i){for(let n=0;n<i;n++)t[n+e]=this.readInt32()}readFloat32Array(t,e,i){for(let n=0;n<i;n++)t[n+e]=this.readFloat32()}readFloat64Array(t,e,i){for(let n=0;n<i;n++)t[n+e]=this.readFloat64()}writeFloat32Array(t,e,i){for(let n=0;n<i;n++)this.writeFloat32(t[n+e])}writeFloat32(t){const e=this.position+4;this.ensureCapacity(e),this.dataView.setFloat32(this.position,t,this.endianness),this.position=e}writeFloat64(t){const e=this.position+8;this.ensureCapacity(e),this.dataView.setFloat64(this.position,t,this.endianness),this.position=e}writeInt8(t){const e=this.position+1;this.ensureCapacity(e),this.dataView.setInt8(this.position,t),this.position=e}writeInt16(t){const e=this.position+2;this.ensureCapacity(e),this.dataView.setInt16(this.position,t,this.endianness),this.position=e}writeInt32(t){const e=this.position+4;this.ensureCapacity(e),this.dataView.setInt32(this.position,t,this.endianness),this.position=e}writeUint8(t){const e=this.position+1;this.ensureCapacity(e),this.dataView.setUint8(this.position,t),this.position=e}writeUint8Array(t,e,i){for(let n=0;n<i;n++)this.writeUint8(t[e+n])}writeUint16(t){const e=this.position+2;this.ensureCapacity(e),this.dataView.setUint16(this.position,t,this.endianness),this.position=e}writeUint16BE(t){const e=this.position+2;this.ensureCapacity(e),this.dataView.setUint16(this.position,t,ri),this.position=e}writeUint16LE(t){const e=this.position+2;this.ensureCapacity(e),this.dataView.setUint16(this.position,t,ai),this.position=e}writeUint16Array(t,e,i){for(let n=0;n<i;n++)this.writeUint16(t[e+n])}writeUint24(t){this.endianness===ri?this.writeUint24BE(t):this.writeUint24LE(t)}writeUint24BE(t){const e=this.position+3;this.ensureCapacity(e);const i=255&t,n=t>>8&255,r=t>>16&255;this.dataView.setUint8(this.position,r),this.dataView.setUint8(this.position+1,n),this.dataView.setUint8(this.position+2,i),this.position=e}writeUint24LE(t){const e=this.position+3;this.ensureCapacity(e);const i=255&t,n=t>>8&255,r=t>>16&255;this.dataView.setUint8(this.position,i),this.dataView.setUint8(this.position+1,n),this.dataView.setUint8(this.position+2,r),this.position=e}writeUintVar(t){let e=!0;for(;e||0!==t;){e=!1;let i=127&t;(t>>=7)>0&&(i|=128),this.writeUint8(i)}}readUintVar(){let t=!0,e=0,i=0;for(;t;){let n=this.readUint8();t=0!=(128&n),e|=(127&n)<<i,i+=7}return e}writeUint32(t){const e=this.position+4;this.ensureCapacity(e),this.dataView.setUint32(this.position,t,this.endianness),this.position=e}writeUint32BE(t){const e=this.position+4;this.ensureCapacity(e),this.dataView.setUint32(this.position,t,ri),this.position=e}writeUint32LE(t){const e=this.position+4;this.ensureCapacity(e),this.dataView.setUint32(this.position,t,ai),this.position=e}writeUint32Array(t,e,i){this.ensureCapacity(this.position+4*i);for(let n=0;n<i;n++)this.writeUint32(t[e+n])}writeBytes(t,e,i){const n=e+i,r=this.position,a=r+i;if(this.ensureCapacity(a),0===e&&t.length===i)this.__data_uint8.set(t,r);else if("function"==typeof t.subarray)this.__data_uint8.set(t.subarray(e,n),r);else for(let n=0;n<i;n++)this.__data_uint8[r+n]=t[e+n];this.position=a}readBytes(t,e,i){const n=this.position,r=n+i,a=this.__data_uint8;i<128?function(t,e,i,n,r){let a,s,o;for(o=0;o<r;o++)a=e+o,s=n+o,i[s]=t[a]}(a,n,t,e,i):t.set(a.subarray(n,r),e),this.position=r}writeUTF8String(t){if(null===t)return void this.writeUint32(4294967295);if(void 0===t)return void this.writeUint32(4294967294);let e=0;const i=t.length;if(i>=4294967294)throw new Error("String is too long");this.writeUint32(i);let n=this.position;const r=Math.max(32,i+(i>>1)+7);this.ensureCapacity(r+n);let a=this.__data_uint8,s=this.capacity;for(;e<i;){let r=t.charCodeAt(e++);if(r>=55296&&r<=56319){if(e<i){const i=t.charCodeAt(e);56320==(64512&i)&&(++e,r=((1023&r)<<10)+(1023&i)+65536)}if(r>=55296&&r<=56319)continue}if(n+4>s&&(this.ensureCapacity(n+4),s=this.capacity,a=this.__data_uint8),0!=(4294967168&r)){if(0==(4294965248&r))a[n++]=r>>6&31|192;else if(0==(4294901760&r))a[n++]=r>>12&15|224,a[n++]=r>>6&63|128;else{if(0!=(4292870144&r))continue;a[n++]=r>>18&7|240,a[n++]=r>>12&63|128,a[n++]=r>>6&63|128}a[n++]=63&r|128}else a[n++]=r}this.position=n}readUTF8String(){const t=this.readUint32();if(4294967295===t)return null;if(4294967294===t)return;const e=this.__data_uint8;let i="",n=this.position,r=0;for(;n<this.capacity&&r<t;){const t=e[n++];let a;if(0===t)break;0==(128&t)?a=t:192==(224&t)?a=(31&t)<<6|63&e[n++]:224==(240&t)?a=(31&t)<<12|(63&e[n++])<<6|63&e[n++]:240==(248&t)&&(a=(7&t)<<18|(63&e[n++])<<12|(63&e[n++])<<6|63&e[n++],a>65535&&(a-=65536,i+=String.fromCharCode(a>>>10&1023|55296),r++,a=56320|1023&a)),r++,i+=String.fromCharCode(a)}return this.position=n,i}writeASCIIString(t){const e=t.length,i=this.position,n=i+e;this.ensureCapacity(n);for(let n=0;n<e;n++){const e=t.charCodeAt(n);if(e>255)throw new Error(`Character ${String.fromCharCode(e)} can't be represented by a US-ASCII byte.`);this.__data_uint8[i+n]=e}this.position=n}readASCIICharacters(t,e=!1){let i="";for(let n=0;n<t;n++){const t=this.readUint8();if(e&&0===t)break;i+=String.fromCharCode(t)}return i}static fromEndianness(t){const e=new si;return e.endianness=t,e}static fromArrayBuffer(t){const e=new si;return e.fromArrayBuffer(t),e}static copyUTF8String(t,e){const i=t.readUTF8String();return e.writeUTF8String(i),i}static copyUintVar(t,e){const i=t.readUintVar();return e.writeUintVar(i),i}static copyUint8(t,e){const i=t.readUint8();return e.writeUint8(i),i}static copyUint16(t,e){const i=t.readUint16();return e.writeUint16(i),i}static copyUint32(t,e){const i=t.readUint32();return e.writeUint32(i),i}static copyFloat32(t,e){const i=t.readFloat32();return e.writeFloat32(i),i}static copyFloat64(t,e){const i=t.readFloat64();return e.writeFloat64(i),i}static copyBytes(t,e,i){const n=new Uint8Array(i);return t.readBytes(n,0,i),e.writeBytes(n,0,i),n}}si.prototype.isBinaryBuffer=!0;const oi=new Uint32Array(256);for(let t=0;t<256;t++){let e=t;for(let t=0;t<8;t++)1&e?e=3988292384^e>>>1:e>>>=1;oi[t]=e}class hi{width=0;height=0;bitDepth=0;colorType=0;compressionMethod=0;filterMethod=0;interlaceMethod=0;colors=0;alpha=!1;pixelBits=0;palette=null;pixels=null;trns=null;text={};getWidth(){return this.width}setWidth(t){this.width=t}getHeight(){return this.height}setHeight(t){this.height=t}getBitDepth(){return this.bitDepth}setBitDepth(t){if(-1===[1,2,4,8,16].indexOf(t))throw new Error("invalid bith depth "+t);this.bitDepth=t}getColorType(){return this.colorType}setColorType(t){let e=0,i=!1;switch(t){case 0:case 3:e=1;break;case 2:e=3;break;case 4:e=2,i=!0;break;case 6:e=4,i=!0;break;default:throw new Error("invalid color type")}this.colors=e,this.alpha=i,this.colorType=t}getCompressionMethod(){return this.compressionMethod}setCompressionMethod(t){if(0!==t)throw new Error("invalid compression method "+t);this.compressionMethod=t}getFilterMethod(){return this.filterMethod}setFilterMethod(t){if(0!==t)throw new Error("invalid filter method "+t);this.filterMethod=t}getInterlaceMethod(){return this.interlaceMethod}setInterlaceMethod(t){if(0!==t&&1!==t)throw new Error("invalid interlace method "+t);this.interlaceMethod=t}setTRNS(t){this.trns=t}setPalette(t){if(t.length%3!=0)throw new Error("incorrect PLTE chunk length");if(t.length>3*Math.pow(2,this.bitDepth))throw new Error("palette has more colors than 2^bitdepth");this.palette=t}getPalette(){return this.palette}getPixel(t,e,i,n){const r=this.pixels;if(!r)throw new Error("pixel data is empty");if(i>=this.width||n>=this.height)throw new Error("x,y position out of bound");const a=this.colors*this.bitDepth/8*(n*this.width+i);let s,o,h,l;switch(this.colorType){case 0:s=r[a],o=s,h=s,l=255;break;case 2:s=r[a],o=r[a+1],h=r[a+2],l=255;break;case 3:l=255,null!=this.trns&&(l=this.trns[r[a]]);const t=3*r[a],e=this.palette;s=e[t],o=e[t+1],h=e[t+2];break;case 4:s=r[a],o=s,h=s,l=r[a+1];break;case 6:s=r[a],o=r[a+1],h=r[a+2],l=r[a+3];break;default:throw new Error("Unsupported color type")}t[e+0]=s,t[e+1]=o,t[e+2]=h,t[e+3]=l}getRGBA8Array_fromRGB(t){const e=this.height,i=this.width*e,n=this.pixels;for(let e=0;e<i;e++){const i=3*e,r=i+e;t[r]=n[i],t[r+1]=n[i+1],t[r+2]=n[i+2],t[r+3]=255}}getRGBA8Array_generic(t){const e=this.height,i=this.width;for(let n=0;n<e;n++){const e=n*i;for(let r=0;r<i;r++){const i=4*(e+r);this.getPixel(t,i,r,n)}}}getRGBA8Array(){if(6===this.colorType)return this.pixels;const t=this.height,e=this.width,i=new Uint8Array(e*t*4);return 2===this.colorType?this.getRGBA8Array_fromRGB(i):this.getRGBA8Array_generic(i),i}getUint8Data_case3(){const t=this.width*this.height;let e;const i=this.trns;e=null!==i?4:3;const n=new Uint8Array(t*e),r=this.pixels,a=this.palette,s=this.colors*Math.ceil(this.bitDepth/8);for(let i=0;i<t;i++){const t=i*e,o=3*r[i*s];n[t]=a[o],n[t+1]=a[o+1],n[t+2]=a[o+2]}if(null!==i){const e=i.length;for(let a=0;a<t;a++){const t=r[a*s];n[4*a+3]=t>=e?255:i[t]}}return{data:n,itemSize:e}}getUint8Data(){let t,e=0;switch(this.colorType){case 0:t=this.pixels,e=1;break;case 2:t=this.pixels,e=3;break;case 3:const i=this.getUint8Data_case3();t=i.data,e=i.itemSize;break;case 4:t=this.pixels,e=2;break;case 6:t=this.pixels,e=4;break;default:throw new Error("Unsupported color type")}return{data:t,itemSize:e}}}const li=[137,80,78,71,13,10,26,10];function di(t){const e=new Ye.Inflate;if(e.push(t),e.err)throw new Error(e.err);return e.result.buffer}function ci(t,e){return t[e]<<24|t[e+1]<<16|t[e+2]<<8|t[e+3]}function fi(t,e){return t[e]}function ui(t){this.i=0,this.bytes=new Uint8Array(t),this.png=new hi,this.dataChunks=[],this.buffer=new si,this.buffer.endianness=ri,this.buffer.fromArrayBuffer(t),this.crc_enabled=!1,this.header=new Uint8Array(8)}ui.prototype.readBytes=function(t){const e=new Uint8Array(t);return this.buffer.readBytes(e,0,t),e},ui.prototype.decodeHeader=function(){if(0!==this.i)throw new Error("file pointer should be at 0 to read the header");const t=this.buffer,e=this.header;if(t.readBytes(e,0,8),!qe(e,li))throw new Error("invalid PNGReader file (bad signature)")},ui.prototype.decodeChunk=function(){const t=this.buffer,e=t.readUint32();if(e<0)throw new Error("Bad chunk length "+(4294967295&e));const i=t.position,n=t.readASCIICharacters(4),r=this.readBytes(e),a=t.readUint32();switch(this.crc_enabled&&(4294967295^function(t,e,i,n){let r=4294967295;const a=i+n;for(let t=i;t<a;t++){const i=255&(r^e[t]);r=oi[i]^r>>>8}return r}(0,t.raw_bytes,i,e+4))>>>0!==a&&console.warn(`CRC (Cyclic Redundancy Check) error at block '${n}' at address ${i}`),n){case"IHDR":this.decodeIHDR(r);break;case"PLTE":this.decodePLTE(r);break;case"IDAT":this.decodeIDAT(r);break;case"tRNS":this.decodeTRNS(r);break;case"IEND":this.decodeIEND(r);break;case"sRGB":this.decodesRGB(r);break;case"tIME":this.decodetIME(r);break;case"zTXt":this.decodezTXt(r);break;case"iTXt":this.decodeiTXt(r)}return n},ui.prototype.decodesRGB=function(t){fi(t,0)},ui.prototype.decodetIME=function(t){fi(t,0),fi(t,1),fi(t,2),fi(t,3),fi(t,4),fi(t,5),fi(t,6)},ui.prototype.decodeiTXt=function(t){const e=si.fromArrayBuffer(t.buffer),i=e.readASCIICharacters(79,!0),n=e.readUint8(),r=(e.readUint8(),e.readASCIICharacters(Infinity,!0)),a=e.readASCIICharacters(Infinity,!0),s=e.data.length-e.position;let o;if(0===n)o=e.readASCIICharacters(s);else{if(1!==n)throw new Error(`Invalid compression flag value '${n}'`);{const t=di(new Uint8Array(e.data,e.position,s));e.fromArrayBuffer(t),o=e.readASCIICharacters(t.byteLength)}}return{keyword:i,language_tag:r,translated_keyword:a,text:o}},ui.prototype.decodezTXt=function(t){const e=si.fromArrayBuffer(t.buffer),i=e.readASCIICharacters(79,!0),n=e.readUint8();let r;if(0!==n)throw new Error(`Unsupported compression method '${n}'`);{const i=di(new Uint8Array(t.buffer,e.position));e.fromArrayBuffer(i),r=e.readASCIICharacters(i.length)}return{keyword:i,text:r}},ui.prototype.decodetEXt=function(t){const e=si.fromArrayBuffer(t.buffer),i=e.readASCIICharacters(Number.POSITIVE_INFINITY,!0),n=e.readASCIICharacters(i.length-1,!1);this.png.text[i]=n},ui.prototype.decodeiEXt=function(t){const e=si.fromArrayBuffer(t.buffer),i=e.readASCIICharacters(Number.POSITIVE_INFINITY,!0);if(e.readUint8(),e.readUint8(),e.readASCIICharacters(Number.POSITIVE_INFINITY,!0),e.readUTF8String(),0!==e.readUint8())throw new Error("Expected Null Separator after Translated keyword");const n=e.readUTF8String();this.png.text[i]=n},ui.prototype.decodeIHDR=function(t){const e=this.png;e.setWidth(ci(t,0)),e.setHeight(ci(t,4)),e.setBitDepth(fi(t,8)),e.setColorType(fi(t,9)),e.setCompressionMethod(fi(t,10)),e.setFilterMethod(fi(t,11)),e.setInterlaceMethod(fi(t,12))},ui.prototype.decodePLTE=function(t){this.png.setPalette(t)},ui.prototype.decodeIDAT=function(t){this.dataChunks.push(t)},ui.prototype.decodeTRNS=function(t){this.png.setTRNS(t)},ui.prototype.decodeIEND=function(){},ui.prototype.decodePixels=function(){const t=this.png,e=new Ye.Inflate,i=this.dataChunks,n=i.length;for(let t=0;t<n;t++)if(e.push(i[t]),e.err)throw new Error(e.err);const r=e.result;0===t.getInterlaceMethod()?this.interlaceNone(r):this.interlaceAdam7(r)},ui.prototype.interlaceNone=function(t){const e=this.png,i=e.bitDepth,n=e.colors*i/8,r=e.width,a=e.height,s=Math.ceil(n*r),o=Math.ceil(n)*r,h=new Uint8Array(o*a);let l=0;const d=t.length;for(let e=0;e<d;e+=s+1){const r=e+1,a=fi(t,e);switch(a){case 0:if(1===i)for(let e=0;e<o;e++){const i=t[(e>>>4)+r]>>>(7&e)&1;h[l+e]=i}else if(2===i)for(let e=0;e<o;e++){const i=t[(e>>>2)+r]>>>((3&~e)<<1)&3;h[l+e]=i}else if(4===i)for(let e=0;e<o;e++){const i=t[(e>>>1)+r]>>>((1&~e)<<2)&15;h[l+e]=i}else{if(8!==i)throw new Error(`unsupported bit depth ${i}`);for(let e=0;e<o;e++)h[l+e]=t[e+r]}break;case 1:this.unFilterSub(t,r,h,n,l,s);break;case 2:this.unFilterUp(t,r,h,n,l,s);break;case 3:this.unFilterAverage(t,r,h,n,l,s);break;case 4:this.unFilterPaeth(t,r,h,n,l,s);break;default:throw new Error(`unknown filtered scanline type '${a}'`)}l+=o}e.pixels=h},ui.prototype.interlaceAdam7=function(t){throw new Error("Adam7 interlacing is not implemented yet")},ui.prototype.unFilterSub=function(t,e,i,n,r,a){let s=0;for(;s<n;s++)i[r+s]=t[s+e];for(;s<a;s++){const a=r+s;i[a]=t[s+e]+i[a-n]&255}},ui.prototype.unFilterUp=function(t,e,i,n,r,a){let s,o,h=0;if(r-a<0)for(;h<a;h++)i[r+h]=t[h+e];else for(;h<a;h++)s=t[h+e],o=i[r+h-a],i[r+h]=s+o&255},ui.prototype.unFilterAverage=function(t,e,i,n,r,a){let s,o,h,l=0;if(r-a<0){for(;l<n;l++)i[r+l]=t[l+e];for(;l<a;l++){const a=r+l;i[a]=t[l+e]+(i[a-n]>>1)&255}}else{for(;l<n;l++){const n=r+l;i[n]=t[l+e]+(i[n-a]>>1)&255}for(;l<a;l++){s=t[l+e];const d=r+l;o=i[d-n],h=i[d-a],i[d]=s+(o+h>>1)&255}}},ui.prototype.unFilterPaeth=function(t,e,i,n,r,a){let s,o,h,l,d,c,f,u,_,p=0;if(r-a<0){for(;p<n;p++)i[r+p]=t[p+e];for(;p<a;p++)i[r+p]=t[p+e]+i[r+p-n]&255}else{const w=r-a;for(;p<n;p++)i[r+p]=t[p+e]+i[w+p]&255;for(;p<a;p++){s=t[p+e];const w=r+p;l=i[w-a-n],h=i[w-a],o=i[w-n],d=o+h-l,c=Math.abs(d-o),f=Math.abs(d-h),u=Math.abs(d-l),_=c<=f&&c<=u?o:f<=u?h:l,i[w]=s+_&255}}},ui.prototype.parse=function(){for(this.decodeHeader();"IEND"!==this.decodeChunk(););return this.decodePixels(),this.png},self.Lib={decode:async function(t,e="png"){if(!(t instanceof ArrayBuffer))throw new Error(".data argument must be an ArrayBuffer, instead was something else");if("png"===e.toLowerCase())return await async function(t){return new Promise(((e,i)=>{const n=new ui(t).parse(),r=n.getUint8Data(),a=n.getWidth(),s=n.getHeight();e({data:r.data.buffer,width:a,height:s,itemSize:r.itemSize,bitDepth:8})}))}(t);throw new Error("Unsupported type")}}})();
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t.splice(i,1),!0;return!1}function H(t,e){return-1===t.indexOf(e)&&(t.push(e),!0)}function W(t,e){return t.v0===e?t.v1:t.v1===e?t.v0:null}let G=0;class Y{constructor(){this.index=G++,this.v0=null,this.v1=null,this.faces=[],this.lengthSqr=-1}get byteSize(){return 128+8*this.faces.length+10}getVertexByIndex(t){if(0===t)return this.v0;if(1===t)return this.v1;throw new Error("Index out of bounds")}copy(t){this.v0=t.v0,this.v1=t.v1,this.lengthSqr=t.lengthSqr,this.faces=t.faces.slice()}clone(){const t=new Y;return t.copy(this),t}validate(t){let e=!0;const n=this.faces,i=n.length;for(let r=0;r<i;r++)n[r].containsEdge(this)||(t(`Missing back-link from face[${r}]`),e=!1);return this.v0.containsEdge(this)||(t("Missing back-link from vertex v0"),e=!1),this.v1.containsEdge(this)||(t("Missing back-link from vertex v1"),e=!1),e}isLinked(){return this.v0.containsEdge(this)}unlink(){const t=this.v0,e=this.v1;t.removeEdge(this),t!==e&&e.removeEdge(this);const n=this.faces,i=n.length;for(let 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this.containsBothVertices(t.v0,t.v1)}}function K(t,e,n){const i=t.length;for(let r=0;r<i;r++)t[r]===e&&(t[r]=n)}Y.prototype.isTopoEdge=!0;var Q,X="undefined"!=typeof Float32Array?Float32Array:Array;function Z(t,e){return t[0]=e[0],t[1]=e[1],t[2]=e[2],t}Math.random,Math.PI,Math.hypot||(Math.hypot=function(){for(var t=0,e=arguments.length;e--;)t+=arguments[e]*arguments[e];return Math.sqrt(t)}),Q=new X(3),X!=Float32Array&&(Q[0]=0,Q[1]=0,Q[2]=0);let tt=0;class et{constructor(){this.index=tt++,this.vertices=[],this.edges=[],this.normal=[0,0,0]}get byteSize(){return 100+8*this.vertices.length+10+8*this.edges.length+10+24+10}copy(t){this.index=t.index,this.vertices=t.vertices.slice(),this.edges=t.edges.slice(),Z(this.normal,t.normal)}clone(){const t=new et;return t.copy(this),t}validate(t){let e=!0;const n=this.vertices,i=n.length;3!==i&&(t(`Expected number of vertices is 3, instead got ${i}`),e=!1);for(let r=0;r<i;r++)n[r].containsFace(this)||(t(`Missing back-link from vertex[${r}]`),e=!1);const r=this.edges,s=r.length;3!==s&&(t(`Expected number of edges is 3, instead got ${s}`),e=!1);for(let n=0;n<s;n++)r[n].containsFace(this)||(t(`Missing back-link from edge[${n}]`),e=!1);return e}isLinked(){return this.vertices[0].containsFace(this)}replaceEdge(t,e){K(this.edges,t,e)}replaceVertex(t,e){K(this.vertices,t,e)}isDegenerateTopology(){const t=this.vertices,e=t[0],n=t[1],i=t[2];return e===n||e===i||n===i}unlink(){const t=this.vertices,e=t.length;for(let n=0;n<e;n++)t[n].removeFace(this);const n=this.edges,i=n.length;for(let t=0;t<i;t++)n[t].removeFace(this)}addEdge(t){this.edges.push(t)}addUniqueEdge(t){return H(this.edges,t)}removeEdge(t){P(this.edges,t)}containsEdge(t){return-1!==this.edges.indexOf(t)}computeNormal(){const t=this.vertices,e=t[0],n=t[1],i=t[2];!function(t,e,n,i){!function(t,e,n,i,r,s,o,a,h,c,d){const u=h-s,l=c-o,f=d-a,g=n-s,_=i-o,p=r-a,y=l*p-f*_,m=f*g-u*p,w=u*_-l*g,v=function(t,e,n){return t*t+e*e+n*n}(y,m,w);if(0===v)return t[0]=0,t[1]=1,void(t[2]=0);const b=1/Math.sqrt(v),x=y*b,A=m*b,E=w*b;t[0]=x,t[1]=A,t[2]=E}(t,0,e[0],e[1],e[2],n[0],n[1],n[2],i[0],i[1],i[2])}(this.normal,e,n,i)}setVertexAt(t,e){this.vertices[t]=e}containsVertex(t){return-1!==this.vertices.indexOf(t)}getEdgeNeighbours(t,e){let n=0;const i=this.edges,r=i.length;for(let s=0;s<r;s++){const r=i[s].faces,o=r.length;for(let i=0;i<o;i++){const s=r[i];s!==this&&(t[e+n]=s,n++)}}return n}}et.prototype.isTopoFace=!0;class nt{constructor(){this.index=0,this.edges=[],this.faces=[],this.x=0,this.y=0,this.z=0}get 0(){return this.x}get 1(){return this.y}get 2(){return this.z}get byteSize(){return 112+8*this.edges.length+10+8*this.faces.length+10}copy(t){this.x=t.x,this.y=t.y,this.z=t.z,this.index=t.index,this.faces=t.faces.slice(),this.edges=t.edges.slice()}clone(){const t=new nt;return t.copy(this),t}validate(t){let e=!0;const n=this.faces,i=n.length;for(let r=0;r<i;r++)n[r].containsVertex(this)||(t(`Missing back-link from face[${r}]`),e=!1);const r=this.edges,s=r.length;for(let n=0;n<s;n++)r[n].containsVertex(this)||(t(`Missing back-link from edge[${n}]`),e=!1);return e}distanceTo(t){return e=this.x,n=this.y,i=this.z,r=t.x,s=t.y,o=t.z,Math.sqrt(function(t,e,n,i,r,s){const o=t-i,a=e-r,h=n-s;return o*o+a*a+h*h}(e,n,i,r,s,o));var e,n,i,r,s,o}addFace(t){this.faces.push(t)}addUniqueFace(t){return H(this.faces,t)}containsFace(t){return-1!==this.faces.indexOf(t)}removeFace(t){P(this.faces,t)}addEdge(t){this.edges.push(t)}addUniqueEdge(t){return H(this.edges,t)}replaceEdge(t,e){const n=this.edges,i=n.indexOf(t);n[i]=e}containsEdge(t){return-1!==this.edges.indexOf(t)}removeEdge(t){return P(this.edges,t)}replaceAnotherVertex(t){const e=t.faces,n=e.length;let i=0;for(;i<n;i++){const n=e[i];n.replaceVertex(t,this),this.addUniqueFace(n)}const r=t.edges,s=r.length;for(i=0;i<s;i++){const e=r[i];e.replaceVertex(t,this),this.addUniqueEdge(e)}}computeNeighbourVertices(t,e){let n=0;const i=this.edges,r=i.length;for(let s=0;s<r;s++){const 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//# sourceMappingURL=bundle-worker-terrain.js.map
// Spatial audio — a Meep example for the ECS-native positional audio engine.
//
// Sections:
// §1 Tuning constants
// §2 Engine bootstrap systems, loaders, plugins, harness
// §3 Lights
// §4 Terrain + physics ground flat grass field + a collision slab
// §5 Trees + bird emitters scatter, instanced meshes, AudioEmitters
// §6 Player capsule + FirstPersonPlayerController + ear
// §7 Input + pointer lock
// §8 HUD + frame loop
//
// A forest of 500 trees stands on a flat terrain. Every tree carries a chirping
// bird: a LOOPING positional `AudioEmitter` whose clip is "one chirp, then a
// randomised stretch of silence". That makes 500 localized sound sources — far
// more than any audio device can voice at once.
//
// The engine's `AudioEmitterSystem` handles the scale for free. A looping 3D
// autoplay emitter goes on its SPATIALLY-MANAGED path: every emitter is just a
// leaf in a BVH until a per-frame refresh promotes the nearest in-range ones —
// up to a fixed live-voice BUDGET — to real playing voices, and demotes the
// rest. A dormant emitter costs only its BVH leaf: no audio nodes, no per-frame
// work. So you walk a forest of 500 birds while only ~`AUDIO_BUDGET` are ever
// sounding, the chorus shifting as you move. The "audible" HUD counter is the
// live-voice count; watch it hover near the budget no matter how many trees
// exist.
//
// Why a looping sample with baked silence (rather than a re-triggered one-shot):
// only a looping source can ride the managed path (a one-shot would self-end and
// never re-promote). The clip graph resolves its timeline once per play, so the
// "chirp → silence → repeat" rhythm is baked into the buffer's loop region —
// each bird gets a random `loopEnd` (its period) plus a random pitch, which both
// adds variety and keeps the birds naturally out of phase.
// ─── Imports ────────────────────────────────────────────────────────────────
import Vector3 from "@woosh/meep-engine/src/core/geom/Vector3.js";
import { Ray3 } from "@woosh/meep-engine/src/core/geom/3d/ray/Ray3.js";
import { BoxShape3D } from "@woosh/meep-engine/src/core/geom/3d/shape/BoxShape3D.js";
import { CapsuleShape3D } from "@woosh/meep-engine/src/core/geom/3d/shape/CapsuleShape3D.js";
import { TransformedShape3D } from "@woosh/meep-engine/src/core/geom/3d/shape/TransformedShape3D.js";
import { randomFloatBetween } from "@woosh/meep-engine/src/core/math/random/randomFloatBetween.js";
import { randomFromArray } from "@woosh/meep-engine/src/core/math/random/randomFromArray.js";
import { seededRandom } from "@woosh/meep-engine/src/core/math/random/seededRandom.js";
import { interpolate_irradiance_linear } from "@woosh/meep-engine/src/core/math/physics/irradiance/interpolate_irradiance_linear.js";
import { GameAssetType } from "@woosh/meep-engine/src/engine/asset/GameAssetType.js";
import { GLTFAssetLoader } from "@woosh/meep-engine/src/engine/asset/loaders/GLTFAssetLoader.js";
import { TextureAssetLoader } from "@woosh/meep-engine/src/engine/asset/loaders/texture/TextureAssetLoader.js";
import { SerializationMetadata } from "@woosh/meep-engine/src/engine/ecs/components/SerializationMetadata.js";
import { Tag } from "@woosh/meep-engine/src/engine/ecs/components/Tag.js";
import Entity from "@woosh/meep-engine/src/engine/ecs/Entity.js";
import { Transform } from "@woosh/meep-engine/src/engine/ecs/transform/Transform.js";
import Terrain from "@woosh/meep-engine/src/engine/ecs/terrain/ecs/Terrain.js";
import TerrainSystem from "@woosh/meep-engine/src/engine/ecs/terrain/ecs/TerrainSystem.js";
import { TerrainLayer } from "@woosh/meep-engine/src/engine/ecs/terrain/ecs/layers/TerrainLayer.js";
import { EngineHarness } from "@woosh/meep-engine/src/engine/EngineHarness.js";
import { Camera } from "@woosh/meep-engine/src/engine/graphics/ecs/camera/Camera.js";
import { CameraSystem } from "@woosh/meep-engine/src/engine/graphics/ecs/camera/CameraSystem.js";
import { SGMesh } from "@woosh/meep-engine/src/engine/graphics/ecs/mesh-v2/aggregate/SGMesh.js";
import { SGMeshSystem } from "@woosh/meep-engine/src/engine/graphics/ecs/mesh-v2/aggregate/SGMeshSystem.js";
import { ShadedGeometrySystem } from "@woosh/meep-engine/src/engine/graphics/ecs/mesh-v2/ShadedGeometrySystem.js";
import {
AmbientOcclusionPostProcessEffect
} from "@woosh/meep-engine/src/engine/graphics/render/buffer/simple-fx/ao/AmbientOcclusionPostProcessEffect.js";
import InputController from "@woosh/meep-engine/src/engine/input/ecs/components/InputController.js";
import InputControllerSystem from "@woosh/meep-engine/src/engine/input/ecs/systems/InputControllerSystem.js";
import { BodyKind } from "@woosh/meep-engine/src/engine/physics/ecs/BodyKind.js";
import { Collider } from "@woosh/meep-engine/src/engine/physics/ecs/Collider.js";
import { ColliderObserverSystem } from "@woosh/meep-engine/src/engine/physics/ecs/ColliderObserverSystem.js";
import { PhysicsSystem } from "@woosh/meep-engine/src/engine/physics/ecs/PhysicsSystem.js";
import { RigidBody } from "@woosh/meep-engine/src/engine/physics/ecs/RigidBody.js";
import { PhysicsSurfacePoint } from "@woosh/meep-engine/src/engine/physics/queries/PhysicsSurfacePoint.js";
import {
FirstPersonPlayerController
} from "@woosh/meep-engine/src/engine/control/first-person/FirstPersonPlayerController.js";
import {
FirstPersonPlayerControllerSystem
} from "@woosh/meep-engine/src/engine/control/first-person/FirstPersonPlayerControllerSystem.js";
import SoundListener from "@woosh/meep-engine/src/engine/sound/ecs/SoundListener.js";
import SoundListenerSystem from "@woosh/meep-engine/src/engine/sound/ecs/SoundListenerSystem.js";
import { AudioEmitter } from "@woosh/meep-engine/src/engine/sound/ecs/audio/AudioEmitter.js";
import { AudioEmitterSystem } from "@woosh/meep-engine/src/engine/sound/ecs/audio/AudioEmitterSystem.js";
import { EventDescription } from "@woosh/meep-engine/src/engine/sound/sopra/definition/EventDescription.js";
import { SampleAudioClip } from "@woosh/meep-engine/src/engine/sound/sopra/definition/clip/SampleAudioClip.js";
import { buildAttenuationCurve } from "@woosh/meep-engine/src/engine/sound/sopra/util/buildAttenuationCurve.js";
// ─── §1 Tuning constants ─────────────────────────────────────────────────────
// Square world footprint (world units). The engine Terrain's origin is its
// corner, so the field spans (0,0)..(WORLD_SIZE, WORLD_SIZE) and the player
// spawns at the centre.
const WORLD_SIZE = 240;
const SPAWN = new Vector3(WORLD_SIZE / 2, 0, WORLD_SIZE / 2);
const TREE_COUNT = 500;
const TREE_MARGIN = 6; // keep trees off the very edge of the terrain
const SPAWN_CLEAR = 9; // radius around spawn kept tree-free
const TREE_SCALE = 2.0; // global multiplier — makes the trees tower in first-person
const TREE_CANOPY_Y = 4.5; // height the bird emitter sits at (in the foliage)
// Trunk collision: a slim invisible box per tree so you can't walk through trunks.
const TRUNK_WIDTH = 1.1;
const TRUNK_HEIGHT = 7;
// Positional-audio shape. distanceMax is the audible radius (also the spatial
// cull radius); with this tree density it leaves ~10-14 birds in range at once.
// The BUDGET caps how many of those actually sound — the whole point of the demo.
const AUDIO_DISTANCE_MIN = 3; // full volume within this radius
const AUDIO_DISTANCE_MAX = 20; // silent (and culled) beyond this
const AUDIO_BUDGET = 16; // max simultaneously-sounding birds
const CHIRP_BUFFER_SECONDS = 7.0; // must match tools/gen-sounds.mjs (BUFFER_SECONDS)
const CHIRP_URLS = [
"./sounds/chirp_tweet.wav",
"./sounds/chirp_tuwee.wav",
"./sounds/chirp_trill.wav",
"./sounds/chirp_warble.wav",
"./sounds/chirp_peeps.wav",
"./sounds/chirp_chirrup.wav",
];
// Two tree models, with the model-specific normalising scale used in the
// pathfinding example (so their natural sizes match before TREE_SCALE).
const TREES = [
{ url: "./models/Tree_1/Tree_1.gltf", size: 0.75 },
{ url: "./models/Tree_2/Tree_2.gltf", size: 0.5 },
];
// Seed the world from the clock so the forest is different every visit.
const seed = Date.now() & 0xFFFFFFFF;
const rng = seededRandom(seed);
// References captured at bootstrap so later setup + the HUD can reach the systems.
let physicsSystem = null;
let fpsSystem = null;
let audioSystem = null;
// ─── §2 Engine bootstrap ─────────────────────────────────────────────────────
const engine = await EngineHarness.bootstrap({
configuration: (config, engine) => {
const gltfLoader = new GLTFAssetLoader();
config.addLoader(GameAssetType.ModelGLTF, gltfLoader);
config.addLoader(GameAssetType.ModelGLTF_JSON, gltfLoader);
config.addLoader(GameAssetType.Texture, new TextureAssetLoader());
// Trees: SGMesh loads each GLTF and spawns per-primitive ShadedGeometry
// children; ShadedGeometrySystem batches every (geometry, material) pair
// into one instanced draw — so 500 trees cost a handful of draws.
config.addSystem(new SGMeshSystem(engine));
config.addSystem(new ShadedGeometrySystem(engine));
// Flat grass ground.
config.addSystem(new TerrainSystem(engine.graphics, engine.assetManager));
// Camera + input for the first-person controller.
config.addSystem(new CameraSystem(engine.graphics));
config.addSystem(new InputControllerSystem(engine.devices));
// Physics: owns RigidBody/Collider lifecycle and serves the kinematic
// mover's sweep/ground casts. The controller auto-acquires it at startup.
physicsSystem = new PhysicsSystem();
config.addSystem(physicsSystem);
config.addSystem(new ColliderObserverSystem(physicsSystem));
fpsSystem = new FirstPersonPlayerControllerSystem();
// Physics is present (so the kinematic mover handles trunk collision), but
// the ground here is flat — let the lightweight downward-ray resolver own
// vertical ground instead of the built-in y=0 baseline (wired once the
// player exists, below).
fpsSystem.useBuiltInFlatGround = false;
config.addSystem(fpsSystem);
// Audio: the listener (the player's ear) and the spatial emitter engine.
// The AudioEmitterSystem self-registers the Sound asset loader and shares
// the engine's single sopra instance; BUDGET caps the live-voice count.
config.addSystem(new SoundListenerSystem(engine.sound.context));
audioSystem = new AudioEmitterSystem(engine.assetManager, engine.sound, { budget: AUDIO_BUDGET });
config.addSystem(audioSystem);
config.addPlugin(AmbientOcclusionPostProcessEffect);
},
});
const ecd = engine.entityManager.dataset;
// Components the systems above don't auto-register (idempotent — safe to repeat).
for (const C of [Terrain, AudioEmitter, SoundListener, Tag, SerializationMetadata]) {
if (!ecd.isComponentTypeRegistered(C)) ecd.registerComponentType(C);
}
// ─── §3 Lights ───────────────────────────────────────────────────────────────
await EngineHarness.buildLights({
engine,
sunIntensity: 1.05,
ambientIntensity: 0.4, // open daylight — the canopy is lit all round
shadowmapResolution: 2048,
sunShadowDistance: 38, // crisp shadows for nearby trunks; far ones skip it
});
// ─── §4 Terrain + physics ground ─────────────────────────────────────────────
// A flat, grass-textured Terrain spanning the whole field. samplerHeight stays
// flat (no height variation), so the player and trees all sit cleanly on y = 0.
// The Terrain is the VISUAL ground; collision is the separate slab below it (the
// controller's mover and ground resolver query physics bodies, not the
// heightfield).
const GRASS_BASE_URL = "./textures/Grass_1.png";
const GRASS_PATCH_URL = "./textures/Ground_1_dark.png";
const GRASS_LAYER_SIZE = 10; // world units per texture repeat
const terrain = new Terrain();
terrain.resolution = 1; // one render quad per cell — plenty for flat ground
terrain.gridScale = 1; // 1 cell → 1 world unit
terrain.size.set(WORLD_SIZE, WORLD_SIZE);
terrain.samplerHeight.resize(WORLD_SIZE, WORLD_SIZE); // flat
terrain.splat.resize(WORLD_SIZE, WORLD_SIZE, 2);
terrain.layers.resolution.set(512, 512);
terrain.layers.addLayer(TerrainLayer.from(GRASS_BASE_URL, GRASS_LAYER_SIZE, GRASS_LAYER_SIZE));
terrain.layers.addLayer(TerrainLayer.from(GRASS_PATCH_URL, GRASS_LAYER_SIZE, GRASS_LAYER_SIZE));
terrain.splat.fillLayerWeights(0, 255); // grass everywhere; patches painted under trees in §5
const splatData = terrain.splat.weightData;
const PATCH_LAYER_OFFSET = WORLD_SIZE * WORLD_SIZE;
new Entity()
.add(new Transform())
.add(terrain)
.build(ecd);
// Physics ground: a wide static slab whose top face is at y = 0. The terrain
// mesh provides the grass look; this is its collision counterpart.
function buildGroundPlane() {
const SIZE = WORLD_SIZE + 40;
const THICKNESS = 2;
const rigidBody = new RigidBody();
rigidBody.kind = BodyKind.Static;
const collider = new Collider();
collider.shape = BoxShape3D.from_size(SIZE, THICKNESS, SIZE);
const transform = new Transform();
transform.position.set(SPAWN.x, -THICKNESS / 2, SPAWN.z);
new Entity()
.add(rigidBody)
.add(collider)
.add(transform)
.add(Tag.fromJSON(["Ground"]))
.add(SerializationMetadata.Transient)
.build(ecd);
}
buildGroundPlane();
// ─── §5 Trees + bird emitters ────────────────────────────────────────────────
// All birds share one distance→gain attenuation curve (read-only at runtime), a
// linear roll-off from full volume at AUDIO_DISTANCE_MIN to silence at
// AUDIO_DISTANCE_MAX. The per-bird events differ only in chirp clip, loop period
// and pitch.
const ATTENUATION = buildAttenuationCurve(
AUDIO_DISTANCE_MIN, AUDIO_DISTANCE_MAX, interpolate_irradiance_linear, 8,
);
/**
* Build one bird as a spatially-managed looping AudioEmitter. The clip loops its
* buffer's [0 .. period] region — chirp then baked silence — so it sings, waits
* `period - chirpLength`, and repeats. A random period + pitch per bird gives
* variety and keeps the chorus out of phase.
*/
function makeBirdEmitter() {
const url = randomFromArray(rng, CHIRP_URLS);
// Loop period in seconds: longer than the chirp, no longer than the buffer.
// (The buffer tail past the chirp is silence, so a larger loopEnd = a longer
// gap between chirps.)
const period = randomFloatBetween(rng, 2.2, CHIRP_BUFFER_SECONDS - 0.2);
// Per-bird pitch detune (cents) — different birds, slightly different voices.
const detune = randomFloatBetween(rng, -500, 500);
const clip = SampleAudioClip.from(url, {
loop: true,
loopStart: 0,
loopEnd: period,
pitch: detune,
pitchRandom: 60, // tiny per-trigger wobble
});
const emitter = new AudioEmitter();
emitter.autoplay = true; // managed path engages: looping + 3D + autoplay
emitter.event = EventDescription.from("bird", clip, {
is3D: true,
busId: "ambient",
distanceMin: AUDIO_DISTANCE_MIN,
distanceMax: AUDIO_DISTANCE_MAX,
attenuation: ATTENUATION,
// Each bird's event content is unique (period/pitch/clip differ), so each
// lands in its own sopra polyphony bucket — the global live BUDGET is the
// only thing limiting how many sound at once. Kept generously above the
// budget anyway, in case two birds happen to roll identical content.
maxInstances: 64,
});
emitter.volume.set(randomFloatBetween(rng, 0.7, 1.0));
return emitter;
}
// Paint a darker ground patch under a tree so it reads as a rooted base rather
// than a tree floating on flat grass. Mirrors the pathfinding example's splat
// trick: bump layer 1's weight in a small footprint and renormalise layer 0.
function paintGroundPatch(gx, gz) {
for (let y = -1; y <= 1; y++) {
for (let x = -1; x <= 1; x++) {
const _gx = gx + x;
const _gz = gz + y;
if (_gx < 0 || _gx >= WORLD_SIZE || _gz < 0 || _gz >= WORLD_SIZE) continue;
const texel = _gz * WORLD_SIZE + _gx;
const fade = (x === 0 && y === 0) ? 220 : 110; // darkest at the trunk
const patch = Math.min(255, splatData[PATCH_LAYER_OFFSET + texel] + fade);
splatData[PATCH_LAYER_OFFSET + texel] = patch;
splatData[texel] = 255 - patch;
}
}
}
function spawnTree(x, z) {
const tree = randomFromArray(rng, TREES);
const halfYaw = rng() * Math.PI;
const scale = randomFloatBetween(rng, 0.9, 1.1) / tree.size * TREE_SCALE;
const heightExtra = randomFloatBetween(rng, 1.0, 1.15);
// Visual tree.
new Entity()
.add(Transform.fromJSON({
position: { x, y: 0, z },
rotation: { x: 0, y: Math.sin(halfYaw), z: 0, w: Math.cos(halfYaw) },
scale: { x: scale, y: scale * heightExtra, z: scale },
}))
.add(SGMesh.fromURL(tree.url))
.build(ecd);
// Trunk collider — a slim invisible static box (own entity, unscaled, so the
// tree's render scale can't distort the collision shape). Bottom at y = 0.
const trunkBody = new RigidBody();
trunkBody.kind = BodyKind.Static;
const trunkCollider = new Collider();
trunkCollider.shape = BoxShape3D.from_size(TRUNK_WIDTH, TRUNK_HEIGHT, TRUNK_WIDTH);
const trunkTransform = new Transform();
trunkTransform.position.set(x, TRUNK_HEIGHT / 2, z);
new Entity()
.add(trunkBody)
.add(trunkCollider)
.add(trunkTransform)
.add(Tag.fromJSON(["TreeTrunk"]))
.add(SerializationMetadata.Transient)
.build(ecd);
// Bird emitter — its own entity, positioned up in the foliage.
new Entity()
.add(Transform.fromJSON({ position: { x, y: TREE_CANOPY_Y, z } }))
.add(makeBirdEmitter())
.build(ecd);
paintGroundPatch(Math.floor(x), Math.floor(z));
}
// Scatter the trees uniformly (not a grid), avoiding the spawn clearing.
let placed = 0;
let guard = 0;
while (placed < TREE_COUNT && guard < TREE_COUNT * 20) {
guard++;
const x = randomFloatBetween(rng, TREE_MARGIN, WORLD_SIZE - TREE_MARGIN);
const z = randomFloatBetween(rng, TREE_MARGIN, WORLD_SIZE - TREE_MARGIN);
const dx = x - SPAWN.x;
const dz = z - SPAWN.z;
if (dx * dx + dz * dz < SPAWN_CLEAR * SPAWN_CLEAR) continue;
spawnTree(x, z);
placed++;
}
terrain.splat.weightTexture.needsUpdate = true;
// ─── §6 Player ───────────────────────────────────────────────────────────────
// Build the player: a kinematic capsule driven by FirstPersonPlayerController.
// We PRE-CREATE the eye entity (camera + SoundListener) and hand it to the
// controller, so the listener rides the player's head — every bird is heard from
// where you're standing and looking. (Left to itself the controller makes a
// bare eye with no listener.)
function buildPlayer() {
const controller = new FirstPersonPlayerController(); // no abilities — flat field
// Eye entity: camera + ear. The controller writes this transform's position
// AND rotation every render frame (so HRTF panning tracks where you look).
const eyeTransform = new Transform();
eyeTransform.position.set(SPAWN.x, SPAWN.y + controller.config.body.height, SPAWN.z);
const camera = new Camera();
camera.active.set(true);
camera.fov.set(controller.config.fov.base);
camera.clip_near = 0.05;
camera.clip_far = 1000;
camera.autoClip = false;
const eye = new Entity()
.add(eyeTransform)
.add(camera)
.add(new SoundListener())
.add(SerializationMetadata.Transient);
eye.build(ecd);
controller.eyeEntity = eye.id;
// Kinematic capsule body. The controller owns the Transform; physics derives
// velocity from the per-step delta and the mover sweeps this capsule against
// the world (ground slab + tree trunks). The capsule is +Y-shifted so its
// bottom sits at the feet (Transform.position) and its top at the head.
const bodyCfg = controller.config.body;
const radius = bodyCfg.radius;
const totalHeight = bodyCfg.height;
const cylinderHeight = Math.max(0, totalHeight - 2 * radius);
const rigidBody = new RigidBody();
rigidBody.kind = BodyKind.KinematicPosition;
rigidBody.mass = bodyCfg.mass;
const collider = new Collider();
collider.shape = TransformedShape3D.from_translation(
CapsuleShape3D.from(radius, cylinderHeight),
[0, totalHeight / 2, 0],
);
const transform = new Transform();
transform.position.copy(SPAWN);
// Transform LAST so the (controller, RigidBody, Collider, Transform) tuple
// completes after the body + collider are present (the controller asserts on
// them at link).
const eb = new Entity()
.add(controller)
.add(rigidBody)
.add(collider)
.add(Tag.fromJSON(["Player"]))
.add(SerializationMetadata.Transient)
.add(transform);
eb.build(ecd);
return { entity: eb.id, controller };
}
const player = buildPlayer();
// Ground resolver: a downward physics raycast from just above the feet, ignoring
// the player's own body, returning the surface y below. Wired after the player
// exists so the filter has its entity id.
fpsSystem.groundResolver = makePhysicsGroundResolver(physicsSystem, player.entity);
function makePhysicsGroundResolver(physics, playerEntity) {
const PROBE_LIFT = 0.1;
const PROBE_DOWN = 50;
const filter = (entity) => entity !== playerEntity;
const ray = Ray3.from(0, 0, 0, 0, -1, 0, PROBE_DOWN);
const hit = new PhysicsSurfacePoint();
return function physicsGroundResolver(x, y, z) {
ray.setOrigin(x, y + PROBE_LIFT, z);
if (!physics.raycast(ray, hit, filter)) return null;
return (y + PROBE_LIFT) - hit.t;
};
}
// ─── §7 Input + pointer lock ─────────────────────────────────────────────────
buildInputBindings(player);
setupPointerLock(engine);
function buildInputBindings(player) {
const ic = new InputController();
const intent = player.controller.intent;
const SENSITIVITY = (Math.PI * 2) / 1200; // radians of look per pixel of mouse
const held = { w: false, a: false, s: false, d: false };
function recomputeMove() {
let mx = 0, my = 0;
if (held.d) mx += 1;
if (held.a) mx -= 1;
if (held.w) my += 1;
if (held.s) my -= 1;
intent.move.set(mx, my);
}
function bindMoveKey(key, prop) {
ic.bind(`keyboard/keys/${key}/down`, () => { held[prop] = true; recomputeMove(); });
ic.bind(`keyboard/keys/${key}/up`, () => { held[prop] = false; recomputeMove(); });
}
bindMoveKey("w", "w");
bindMoveKey("a", "a");
bindMoveKey("s", "s");
bindMoveKey("d", "d");
ic.bind("keyboard/keys/space/down", () => { intent.jump = true; });
ic.bind("keyboard/keys/space/up", () => { intent.jump = false; });
ic.bind("keyboard/keys/shift/down", () => { intent.sprint = true; });
ic.bind("keyboard/keys/shift/up", () => { intent.sprint = false; });
ic.bind("pointer/on/move", (position, event, delta) => {
if (document.pointerLockElement === null) return;
intent.look._add(delta.x * SENSITIVITY, delta.y * SENSITIVITY);
});
ic.on.unlinked.add(() => {
intent.move.set(0, 0);
intent.look.set(0, 0);
intent.jump = false;
intent.sprint = false;
});
new Entity()
.add(ic)
.add(Tag.fromJSON(["PlayerInput"]))
.add(SerializationMetadata.Transient)
.build(ecd);
}
function setupPointerLock(engine) {
const el = engine.graphics.domElement;
const captureEl = engine.viewStack.el;
const prompt = document.getElementById("capture");
captureEl.addEventListener("click", () => {
// A click is the user gesture that lets the AudioContext start.
engine.sound.resumeContext();
if (document.pointerLockElement !== el && el.requestPointerLock) {
el.requestPointerLock();
}
});
captureEl.addEventListener("contextmenu", (e) => e.preventDefault());
document.addEventListener("pointerlockchange", () => {
if (prompt) prompt.classList.toggle("hidden", document.pointerLockElement === el);
});
}
// ─── §8 HUD + frame loop ─────────────────────────────────────────────────────
// Preload the chirp buffers so the first birds to be promoted sound immediately
// (otherwise each clip's first promotion waits a frame on the async decode). The
// Sound loader is registered by the AudioEmitterSystem above.
await Promise.all(
CHIRP_URLS.map(url => engine.assetManager.promise(url, GameAssetType.Sound).catch(() => null)),
);
const fpsEl = document.getElementById("fps");
const treesEl = document.getElementById("trees");
const liveEl = document.getElementById("live");
const budgetEl = document.getElementById("budget");
treesEl.textContent = placed.toString();
budgetEl.textContent = AUDIO_BUDGET.toString();
let fpsWindow = 0;
let fpsFrames = 0;
let lastFrameMs = performance.now();
engine.graphics.on.postRender.add(() => {
const nowMs = performance.now();
const dt = (nowMs - lastFrameMs) / 1000;
lastFrameMs = nowMs;
// Live (sounding) bird count — the spatial system keeps this near the budget
// however many trees exist.
liveEl.textContent = audioSystem.liveSet.liveCount.toString();
fpsWindow += dt;
fpsFrames++;
if (fpsWindow >= 0.5) {
fpsEl.textContent = (fpsFrames / fpsWindow).toFixed(0);
fpsWindow = 0;
fpsFrames = 0;
}
});
// Procedural bird-chirp generator for the Spatial Audio example.
//
// The asset library ships no birdsong, so we synthesise a handful of short mono
// WAVs with nothing but Node core — no runtime deps, fully self-contained. Run:
// node tools/gen-sounds.mjs (or: npm run gen-assets)
// Output → public/sounds/chirp_*.wav.
//
// LAYOUT — why each file is one short chirp at the head of a long silent buffer:
// the example plays every bird as a LOOPING SampleAudioClip on the audio
// engine's spatially-managed path (distance-culled against a live-voice budget).
// A loop needs the silence baked in, because the clip graph resolves its
// timeline once and only a `loop:true` SAMPLE produces unbounded playback. So
// each buffer is [chirp ~0.3-0.6s][silence … to BUFFER_SECONDS]. Per bird the
// example sets the clip's `loopEnd` to a RANDOM value in (chirpLength,
// BUFFER_SECONDS], which is the loop PERIOD: the bird sings its chirp, waits a
// randomised stretch of the baked silence, then repeats. Different per-bird
// periods (plus a random pitch detune) keep ~10 audible birds naturally
// out of phase. BUFFER_SECONDS is therefore the longest silence a bird can hold.
//
// Each chirp begins at amplitude 0 (short attack) and the buffer tail is pure
// silence, so the loop seam (loopEnd → 0) is click-free at any loopEnd.
import { writeFileSync, mkdirSync } from "node:fs";
import { dirname, resolve } from "node:path";
import { fileURLToPath } from "node:url";
const OUT = resolve(dirname(fileURLToPath(import.meta.url)), "../public/sounds");
mkdirSync(OUT, { recursive: true });
const SR = 22050; // 11 kHz Nyquist — ample for 2-6 kHz birdsong
const BUFFER_SECONDS = 7.0; // longest silence a bird can hold between chirps
const TAU = Math.PI * 2;
function writeWav(name, samples) {
const n = samples.length;
const buf = Buffer.alloc(44 + n * 2);
buf.write("RIFF", 0); buf.writeUInt32LE(36 + n * 2, 4); buf.write("WAVE", 8);
buf.write("fmt ", 12); buf.writeUInt32LE(16, 16); buf.writeUInt16LE(1, 20);
buf.writeUInt16LE(1, 22); buf.writeUInt32LE(SR, 24); buf.writeUInt32LE(SR * 2, 28);
buf.writeUInt16LE(2, 32); buf.writeUInt16LE(16, 34);
buf.write("data", 36); buf.writeUInt32LE(n * 2, 40);
for (let i = 0; i < n; i++) {
let s = samples[i];
s = s < -1 ? -1 : s > 1 ? 1 : s;
buf.writeInt16LE((s * 32767) | 0, 44 + i * 2);
}
writeFileSync(resolve(OUT, name), buf);
}
// A fresh full-length buffer of silence. Chirps are painted into its head.
function silentBuffer() {
return new Float32Array(Math.round(BUFFER_SECONDS * SR));
}
// Paint one syllable: a frequency-swept tone (f0 → f1 over its duration, with an
// optional eased curve) plus a quieter octave for a brighter, more bird-like
// timbre, shaped by a smooth attack/decay envelope and an optional amplitude
// "trill" modulation. `out` is mutated in place. `vibrato` adds Hz of pitch
// wobble at `vibratoHz` for a warbling quality.
function syllable(out, startSec, durSec, f0, f1, {
gain = 0.9, attack = 0.006, release = 0.05,
am = 0, amHz = 0, vibrato = 0, vibratoHz = 14, octave = 0.25, sweepEase = 1,
} = {}) {
const start = Math.round(startSec * SR);
const n = Math.round(durSec * SR);
const a = Math.max(1, Math.round(attack * SR));
const r = Math.max(1, Math.round(release * SR));
// accumulate phase so a swept frequency stays continuous (no zipper noise)
let phase = 0;
for (let i = 0; i < n; i++) {
const idx = start + i;
if (idx >= out.length) break;
const t = i / n; // 0..1 within syllable
const swept = f0 + (f1 - f0) * Math.pow(t, sweepEase);
const vib = vibrato !== 0 ? vibrato * Math.sin(TAU * vibratoHz * (i / SR)) : 0;
const f = swept + vib;
phase += (TAU * f) / SR;
// attack/decay envelope (raised-cosine ends → click-free)
let env;
if (i < a) env = 0.5 - 0.5 * Math.cos((Math.PI * i) / a);
else if (i > n - r) env = 0.5 - 0.5 * Math.cos((Math.PI * (n - i)) / r);
else env = 1;
// optional amplitude trill (buzzy, rapid on/off)
const trill = am > 0 ? (1 - am) + am * (0.5 + 0.5 * Math.sin(TAU * amHz * (i / SR))) : 1;
const s = Math.sin(phase) + octave * Math.sin(2 * phase);
out[idx] += s * gain * env * trill;
}
}
// ── chirp types ──────────────────────────────────────────────────────────────
// Five distinct calls. The example picks one at random per bird (timbre variety)
// and detunes it, so the forest never sounds like one cloned bird.
// 1. "tweet" — a single quick upward whistle.
{
const b = silentBuffer();
syllable(b, 0, 0.13, 2300, 3900, { gain: 0.95, sweepEase: 0.6, release: 0.06 });
writeWav("chirp_tweet.wav", b);
}
// 2. "tu-wee" — two syllables: a short low note then a rising one.
{
const b = silentBuffer();
syllable(b, 0.00, 0.09, 3000, 2700, { gain: 0.8, release: 0.04 });
syllable(b, 0.16, 0.16, 2800, 4200, { gain: 0.95, sweepEase: 0.7, release: 0.07 });
writeWav("chirp_tuwee.wav", b);
}
// 3. "trill" — a buzzy amplitude-modulated tone.
{
const b = silentBuffer();
syllable(b, 0, 0.42, 3400, 3700, { gain: 0.7, am: 0.95, amHz: 38, attack: 0.01, release: 0.08 });
writeWav("chirp_trill.wav", b);
}
// 4. "warble" — a sustained note with vibrato.
{
const b = silentBuffer();
syllable(b, 0, 0.5, 3100, 3300, { gain: 0.75, vibrato: 260, vibratoHz: 13, attack: 0.02, release: 0.1 });
writeWav("chirp_warble.wav", b);
}
// 5. "peep-peep-peep" — three clean descending peeps.
{
const b = silentBuffer();
for (let k = 0; k < 3; k++) {
syllable(b, k * 0.17, 0.08, 4200 - k * 250, 3900 - k * 250, { gain: 0.85, release: 0.04 });
}
writeWav("chirp_peeps.wav", b);
}
// 6. "chirrup" — a descending sweep with a small up-tick tail.
{
const b = silentBuffer();
syllable(b, 0.00, 0.18, 4200, 2600, { gain: 0.9, sweepEase: 1.4, release: 0.05 });
syllable(b, 0.20, 0.07, 2800, 3300, { gain: 0.7, release: 0.04 });
writeWav("chirp_chirrup.wav", b);
}
console.log(`wrote 6 chirps (${BUFFER_SECONDS}s buffers @ ${SR}Hz) → ${OUT}`);
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Spatial audio · Meep</title>
<meta name="robots" content="noindex">
<style>
*, *::before, *::after { box-sizing: border-box; }
html, body {
margin: 0; padding: 0;
width: 100%; height: 100%;
overflow: hidden;
background: #07090c;
color: #e6edf3;
font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
canvas { cursor: default; display: block; }
.panel {
position: fixed;
z-index: 100;
background: rgba(7, 9, 12, 0.72);
border: 1px solid #1f2731;
border-radius: 10px;
backdrop-filter: blur(10px);
-webkit-backdrop-filter: blur(10px);
box-shadow: 0 12px 32px rgba(0,0,0,0.4);
}
.hud {
top: 1rem; left: 1rem;
padding: 0.8rem 1rem;
font-family: ui-monospace, "JetBrains Mono", monospace;
font-size: 0.82rem;
line-height: 1.7;
color: #9aa5b1;
min-width: 210px;
}
.hud .label {
color: #6b7785;
text-transform: uppercase;
letter-spacing: 0.1em;
font-size: 0.65rem;
margin-right: 0.5rem;
}
.hud .value { color: #4ef0a8; }
.hud .sub { color: #6b7785; font-size: 0.7rem; }
.legend {
bottom: 1rem; left: 1rem;
padding: 0.85rem 1.1rem;
font-size: 0.82rem;
line-height: 1.6;
max-width: 520px;
color: #9aa5b1;
}
.legend strong { color: #e6edf3; }
.legend kbd {
font-family: ui-monospace, monospace;
font-size: 0.74rem;
color: #4ef0a8;
background: rgba(78,240,168,0.08);
border: 1px solid rgba(78,240,168,0.25);
border-radius: 4px;
padding: 0.05rem 0.35rem;
}
/* "click to capture" prompt, hidden once pointer is locked */
.capture {
position: fixed; inset: 0; z-index: 90;
display: flex; flex-direction: column; gap: 0.4rem;
align-items: center; justify-content: center;
pointer-events: none; text-align: center;
color: #eef3f8;
text-shadow: 0 2px 8px rgba(0,0,0,0.95), 0 4px 22px rgba(0,0,0,0.85);
}
.capture .big { font-size: 1.5rem; }
.capture .small { font-size: 0.95rem; color: #cfd8e3; }
.capture.hidden { display: none; }
</style>
</head>
<body>
<div class="panel hud">
<div><span class="label">fps</span><span class="value" id="fps">--</span></div>
<div><span class="label">trees</span><span class="value" id="trees">0</span> <span class="sub">(each a bird)</span></div>
<div><span class="label">audible</span><span class="value" id="live">0</span> <span class="sub">/ <span id="budget">0</span> voices</span></div>
</div>
<div class="capture" id="capture">
<div class="big">Click to enter the forest</div>
<div class="small">enables sound & captures the mouse</div>
</div>
<div class="panel legend">
<strong>500 trees, each a chirping bird.</strong> Every bird is a looping
positional <code>AudioEmitter</code>; the engine's spatial audio system keeps
only the nearest handful sounding (a live-voice budget) and culls the rest by
distance — so hundreds of localized sources cost almost nothing.
<kbd>Click</kbd> to start · <kbd>WASD</kbd> move · <kbd>Mouse</kbd> look ·
<kbd>Shift</kbd> sprint · <kbd>Space</kbd> jump. Walk around and listen — the
chorus shifts as different birds come into range.
</div>
<script type="module" src="./src/main.js"></script>
</body>
</html>
{
"name": "@meep-examples/spatial-audio",
"version": "0.1.0",
"private": true,
"type": "module",
"description": "A forest of 500 chirping trees demonstrating spatially-managed positional audio: hundreds of localized sources, a handful audible at once.",
"scripts": {
"dev": "vite",
"build": "vite build",
"preview": "vite preview",
"gen-assets": "node tools/gen-sounds.mjs"
},
"dependencies": {
"@woosh/meep-engine": "2.170.0",
"three": "0.136.0"
},
"devDependencies": {
"@rollup/plugin-strip": "^3.0.4",
"vite": "^8.0.13"
}
}
import { defineConfig } from "vite";
import { copyFileSync, existsSync, mkdirSync } from "node:fs";
import { fileURLToPath } from "node:url";
import { resolve, dirname } from "node:path";
import strip from "@rollup/plugin-strip";
const __dirname = dirname(fileURLToPath(import.meta.url));
export default defineConfig({
plugins: [
{
// Copy the committed source thumbnail into the generated gallery folder.
// public/examples/<id>/ is build output (gitignored); thumbnail.png is
// kept in source here and copied through on every build so the gallery
// (src/data/examples.ts) can resolve it.
name: "copy-thumbnail",
apply: "build",
closeBundle() {
const thumb = resolve(__dirname, "thumbnail.png");
const dst = resolve(__dirname, "../../public/examples/spatial-audio");
if (existsSync(thumb)) {
mkdirSync(dst, { recursive: true });
copyFileSync(thumb, resolve(dst, "thumbnail.png"));
}
},
},
],
base: "./",
build: {
outDir: resolve(__dirname, "../../public/examples/spatial-audio"),
emptyOutDir: false,
rollupOptions: {
input: resolve(__dirname, "demo.html"),
plugins: [
{
// this will remove all assert statements from the production build
...strip(),
apply: 'build'
}
],
},
target: "es2022",
},
});
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diffuse1.png · 805.9 KB
metalness.png · 0.1 KB
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Tree_2_1.png · 803.9 KB
Tree_2_2.png · 827.9 KB
Grass_1.png · 243.0 KB
Grass_3.png · 197.3 KB
Ground_1_dark.png · 212.6 KB
thumbnail.png · 213.5 KB
diffuse_256_dtx5.dds
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diffuse_512_dtx5.dds
Binary file.
chirp_chirrup.wav
Binary file.
chirp_peeps.wav
Binary file.
chirp_trill.wav
Binary file.
chirp_tuwee.wav
Binary file.
chirp_tweet.wav
Binary file.
chirp_warble.wav
Binary file.