@woosh/meep-engine/build/bundle-worker-terrain.js

Pure JavaScript game engine. Fully featured and production ready.

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V(this.faces,t)}containsFace(t){return-1!==this.faces.indexOf(t)}removeFace(t){L(this.faces,t)}addEdge(t){this.edges.push(t)}addUniqueEdge(t){return V(this.edges,t)}replaceEdge(t,e){const n=this.edges,r=n.indexOf(t);n[r]=e}containsEdge(t){return-1!==this.edges.indexOf(t)}removeEdge(t){return L(this.edges,t)}computeNeighbourVertices(t,e){let n=0;const r=this.edges,i=r.length;for(let s=0;s<i;s++){const i=r[s].getOtherVertex(this);t[e+n]=i,n++}return n}static from(t,e,n){const r=new R;return r.x=t,r.y=e,r.z=n,r}}R.prototype.isTopoVertex=!0;let J=0;class P{index=J++;vertices=[];edges=[];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(),C(this.normal,t.normal)}clone(){const t=new P;return t.copy(this),t}validate(t){let e=!0;const n=this.vertices,r=n.length;3!==r&&(t(`Expected number of vertices is 3, instead got ${r}`),e=!1);for(let i=0;i<r;i++)n[i].containsFace(this)||(t(`Missing back-link from vertex[${i}]`),e=!1);const i=this.edges,s=i.length;3!==s&&(t(`Expected number of edges is 3, instead got ${s}`),e=!1);for(let n=0;n<s;n++)i[n].containsFace(this)||(t(`Missing back-link from edge[${n}]`),e=!1);return e}isLinked(){return this.vertices[0].containsFace(this)}replaceEdge(t,e){N(this.edges,t,e)}replaceVertex(t,e){N(this.vertices,t,e)}isDegenerateTopology(){const t=this.vertices,e=t[0],n=t[1],r=t[2];return e===n||e===r||n===r}unlink(){const t=this.vertices,e=t.length;for(let n=0;n<e;n++)t[n].removeFace(this);const n=this.edges,r=n.length;for(let t=0;t<r;t++)n[t].removeFace(this)}addEdge(t){this.edges.push(t)}addUniqueEdge(t){return V(this.edges,t)}removeEdge(t){L(this.edges,t)}containsEdge(t){return-1!==this.edges.indexOf(t)}computeNormal(){const t=this.vertices,e=t[0],n=t[1],r=t[2];!function(t,e,n,r){j(t,0,e[0],e[1],e[2],n[0],n[1],n[2],r[0],r[1],r[2])}(this.normal,e,n,r)}setVertexAt(t,e){this.vertices[t]=e}containsVertex(t){return-1!==this.vertices.indexOf(t)}getEdgeNeighbours(t,e){let n=0;const r=this.edges,i=r.length;for(let s=0;s<i;s++){const i=r[s].faces,o=i.length;for(let r=0;r<o;r++){const s=i[r];s!==this&&(t[e+n]=s,n++)}}return n}static fromPoints(t,e,n,r,i,s,o,a,c){const h=R.from(t,e,n),u=R.from(r,i,s),d=R.from(o,a,c),l=new k,f=new k,g=new k;l.v0=h,l.v1=u,f.v0=u,f.v1=d,g.v0=d,g.v1=h;const p=new P;return p.edges.push(l,f,g),p.vertices.push(h,u,d),h.faces.push(p),u.faces.push(p),d.faces.push(p),l.faces.push(p),f.faces.push(p),g.faces.push(p),h.edges.push(l,g),u.edges.push(l,f),d.edges.push(f,g),p}}P.prototype.isTopoFace=!0;class H{vertices=[];__edges=new Set;__faces=new Set;get byteSize(){let t=0;for(let e=0;e<this.vertices.length;e++)t+=this.vertices[e].byteSize;for(const e of this.__edges)t+=e.byteSize;for(const e of this.__faces)t+=e.byteSize;return t}getEdges(){return this.__edges}getFaces(){return this.__faces}getFaceByIndex(t){for(const e of this.__faces)if(e.index===t)return e}validate(t=B){let e=!0,n="",r=0;function i(i){t(`${n}[${r}]: ${i}`),e=!1}n="Edge",r=0;const s=this.getEdges();for(let t of s){t.validate(i),this.containsVertex(t.v0)||i("Link to off-mesh vertex v0"),this.containsVertex(t.v1)||i("Link to off-mesh vertex v1");const e=t.faces,n=e.length;for(let t=0;t<n;t++){const n=e[t];this.containsFace(n)||i(`Link to off-mesh face[${t}]`)}r++}const o=this.getFaces();n="Face",r=0;for(let t of o){t.validate(i);const e=t.edges,n=e.length;for(let t=0;t<n;t++){const n=e[t];this.containsEdge(n)||i(`Link to off-mesh edge[${t}]`)}const s=t.vertices,o=s.length;for(let t=0;t<o;t++){const e=s[t];this.containsVertex(e)||i(`Link to off-mesh vertex[${t}]`)}r++}const a=this.vertices,c=a.length;n="Vertex";for(let t=0;t<c;t++){r=t;const e=a[t];e.validate(i);const n=e.edges,s=n.length;for(let t=0;t<s;t++){const e=n[t];this.containsEdge(e)||i(`Link to off-mesh edge[${t}]`)}const o=e.faces,c=o.length;for(let t=0;t<c;t++){const e=o[t];this.containsFace(e)||i(`Link to off-mesh face[${t}]`)}}return e}clone(){const t=new H;return t.add(this),t}buildVertexMapping(){const t=new Map,e=this.vertices,n=e.length;for(let r=0;r<n;r++){const n=e[r];t.set(n.index,n)}return t}_addWithVertexMap(t,e){const n=t.getFaces();for(let t of n)this.addFaceCopy(t,e)}addFaceCopy(t,e){const n=new P;C(n.normal,t.normal);const r=t.vertices;for(let t=0;t<3;t++){const i=r[t];let s=e.get(i.index);void 0===s&&(s=new R,s.index=i.index,s.x=i.x,s.y=i.y,s.z=i.z,e.set(i.index,s),this.addVertex(s)),n.setVertexAt(t,s),s.addUniqueFace(n)}this.addFace(n),this.patchFaceEdges(n)}patchFaceEdges(t){const e=t.vertices,n=e[0],r=e[1],i=e[2],s=this.ensureEdge(n,r),o=this.ensureEdge(r,i),a=this.ensureEdge(i,n);s.addUniqueFace(t),o.addUniqueFace(t),a.addUniqueFace(t),t.addUniqueEdge(s),t.addUniqueEdge(o),t.addUniqueEdge(a)}add(t){const e=this.buildVertexMapping();this._addWithVertexMap(t,e)}addVertex(t){this.vertices.push(t)}addUniqueVertex(t){V(this.vertices,t)}removeVertex(t){throw new Error("deprecated, use tm_kill_only_vert instead")}containsVertex(t){return-1!==this.vertices.indexOf(t)}addEdge(t){this.__edges.add(t)}addUniqueEdge(t){this.__edges.add(t)}removeEdge(t){throw new Error("deprecated, use tm_kill_only_edge instead")}containsEdge(t){return this.__edges.has(t)}addFace(t){this.__faces.add(t)}injectManyFaces(t){for(let e of t)this.injectFace(e)}injectFace(t){this.addFace(t);const e=t.edges,n=e.length;for(let t=0;t<n;t++){const n=e[t];this.addUniqueEdge(n)}const r=t.vertices,i=r.length;for(let t=0;t<i;t++){const e=r[t];this.addUniqueVertex(e)}}removeFace(t){throw new Error("deprecated, use tm_kill_only_face instead")}containsFace(t){return this.__faces.has(t)}ensureEdge(t,e){const n=t.edges,r=n.length;for(let i=0;i<r;i++){const r=n[i];if(U(r,t)===e)return r}const i=new k;return i.v0=t,i.v1=e,t.edges.push(i),e.edges.push(i),this.__edges.add(i),i}mergeEdges(){const t=this.getEdges();for(let n of t){const r=n.v0,i=n.v1;for(let s of t){if(n===s)continue;const t=s.v0,o=s.v1;if(r===t){if(i!==o)continue}else{if(r!==o)continue;if(i!==t)continue}e=s,this.__edges.delete(e),n.merge(s)}}var e}computeEdgeSquaredLengths(){const t=this.getEdges();for(let e of t)e.computeSquaredLength()}setVerticesFromArray(t){const e=t.length/3,n=this.vertices;for(let r=0;r<e;r++){const e=3*r,i=new R;i.index=r,i.x=t[e],i.y=t[e+1],i.z=t[e+2],n[r]=i}}setFacesFromIndexArray(t){const e=t.length,n=this.vertices,r=e/3;for(let e=0;e<r;e++){const r=3*e,i=t[r],s=t[r+1],o=t[r+2];this.createTriangle(e,n[i],n[s],n[o])}}setFacedUnindexed(){const t=this.vertices,e=t.length/3;for(let n=0;n<e;n++){const e=3*n;this.createTriangle(n,t[e],t[e+1],t[e+2])}}build(t,e){this.setVerticesFromArray(t),null==e?this.setFacedUnindexed():this.setFacesFromIndexArray(e)}createTriangle(t,e,n,r){const i=new P;i.index=t;const s=this.ensureEdge(e,n),o=this.ensureEdge(n,r),a=this.ensureEdge(r,e);return s.faces.push(i),o.faces.push(i),a.faces.push(i),i.vertices.push(e,n,r),i.edges.push(s,o,a),e.faces.push(i),n.faces.push(i),r.faces.push(i),this.__faces.add(i),i}toString(){return`TopoMesh{ vertices: ${q(this.vertices.length)}, edges: ${q(this.getEdges().size)}, faces: ${q(this.getFaces().size)} }`}}H.prototype.isTopoMesh=!0;const W=[],G=[],Y="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";for(let t=0,e=64;t<e;++t)W[t]=Y[t],G[Y.charCodeAt(t)]=t;function K(t,e,n){const r=[];for(let s=e;s<n;s+=3){const e=(t[s]<<16&16711680)+(t[s+1]<<8&65280)+(255&t[s+2]);r.push(W[(i=e)>>18&63]+W[i>>12&63]+W[i>>6&63]+W[63&i])}var i;return r.join("")}G["-".charCodeAt(0)]=62,G["_".charCodeAt(0)]=63;const Q=16383;class X{static encode(t){return function(t){const e=t.length,n=e%3,r=[],i=e-n;for(let e=0;e<i;e+=Q){const n=K(t,e,e+Q>i?i:e+Q);r.push(n)}if(1===n){const n=t[e-1];r.push(W[n>>2]+W[n<<4&63]+"==")}else if(2===n){const n=(t[e-2]<<8)+t[e-1];r.push(W[n>>10]+W[n>>4&63]+W[n<<2&63]+"=")}return r.join("")}(new Uint8Array(t))}static decode(t){return function(t){let e;const n=function(t){const e=t.length;if(e%4>0)throw new Error("Invalid string. Length must be a multiple of 4");let n=t.indexOf("=");return-1===n&&(n=e),[n,n===e?0:4-n%4]}(t),r=n[0],i=n[1],s=new Uint8Array(function(t,e){return 3*(t+e)/4-e}(r,i));let o=0;const a=i>0?r-4:r;let c=0;for(;c<a;c+=4){const n=t.charCodeAt(c),r=t.charCodeAt(c+1),i=t.charCodeAt(c+2),a=t.charCodeAt(c+3);e=G[n]<<18|G[r]<<12|G[i]<<6|G[a],s[o++]=e>>16&255,s[o++]=e>>8&255,s[o++]=255&e}if(2===i){const n=t.charCodeAt(c),r=t.charCodeAt(c+1);e=G[n]<<2|G[r]>>4,s[o++]=255&e}if(1===i){const n=t.charCodeAt(c),r=t.charCodeAt(c+1),i=t.charCodeAt(c+2);e=G[n]<<10|G[r]<<4|G[i]>>2,s[o++]=e>>8&255,s[o++]=255&e}return s}(t).buffer}}const Z="uint8",tt="uint16",et="uint32",nt="int8",rt="int16",it="int32",st="float32",ot="float64",at={[Z]:Uint8Array,[tt]:Uint16Array,[et]:Uint32Array,[nt]:Int8Array,[rt]:Int16Array,[it]:Int32Array,float16:Uint16Array,[st]:Float32Array,[ot]:Float64Array};function ct(t){const e=Object.getPrototypeOf(t).constructor;switch(e){case Uint8Array:case Uint8ClampedArray:return Z;case Uint16Array:return tt;case Uint32Array:return et;case Int8Array:return nt;case Int16Array:return rt;case Int32Array:return it;case Float32Array:return st;case Array:case Float64Array:return ot;default:throw new Error(`unsupported constructor type ${e.name}`)}}function ht(t,e,n){return t<e?e:t>n?n:t}function ut(t,e,n){return(e-t)*n+t}function dt(t,e,n,r,i){return.5*(r-e+(2*e-5*n+4*r-i+(3*(n-r)+i-e)*t)*t)*t+n}const lt=4294967295;function ft(t){const e=t>>0;return lt-((t-e)*lt>>>0)^e}class gt{constructor(t=[],e=1,n=0,r=0){if(!Number.isInteger(e)||e<0)throw new Error(`itemSize must be a non-negative integer, instead was ${e}`);if(!Number.isInteger(n)||n<0)throw new Error(`width must be a non-negative integer, instead was ${n}`);if(!Number.isInteger(r)||n<0)throw new Error(`height must be a non-negative integer, instead was ${r}`);if(void 0===t)throw new Error("data was undefined");if(t.length<n*r*e)throw new Error(`Buffer underflow, data.length(=${t.length}) is too small. Expected at least ${n*r*e}`);this.width=n,this.height=r,this.itemSize=e,this.data=t,this.version=0}sampleCatmullRomUV(t,e,n){const r=this.itemSize;for(let i=0;i<r;i++)n[i]=this.sampleChannelCatmullRomUV(t,e,i)}sampleChannelCatmullRomUV(t,e,n){const r=t*this.width-.5,i=e*this.height-.5;return this.sampleChannelCatmullRom(r,i,n)}sampleChannelCatmullRom(t,e,n){const r=Math.floor(t),i=Math.floor(e),s=t-r,o=e-i,a=s*(s*(1-.5*s)-.5),c=o*(o*(1-.5*o)-.5),h=s*(.5+s*(2-1.5*s)),u=o*(.5+o*(2-1.5*o)),d=s*s*(.5*s-.5),l=o*o*(.5*o-.5),f=1+s*s*(1.5*s-2.5)+h,g=1+o*o*(1.5*o-2.5)+u,p=r-1,y=i-1,w=r+2,_=i+2,m=r+h/f,v=i+u/g;let x=0;return x+=this.sampleChannelBilinear(p,y,n)*a*c,x+=this.sampleChannelBilinear(m,y,n)*f*c,x+=this.sampleChannelBilinear(w,y,n)*d*c,x+=this.sampleChannelBilinear(p,v,n)*a*g,x+=this.sampleChannelBilinear(m,v,n)*f*g,x+=this.sampleChannelBilinear(w,v,n)*d*g,x+=this.sampleChannelBilinear(p,_,n)*a*l,x+=this.sampleChannelBilinear(m,_,n)*f*l,x+=this.sampleChannelBilinear(w,_,n)*d*l,x}sampleBicubicUV(t,e,n){const r=this.itemSize;for(let i=0;i<r;i++)n[i]=this.sampleChannelBicubicUV(t,e,i)}sampleBicubic(t,e,n,r){const i=this.itemSize;for(let s=0;s<i;s++)n[s+r]=this.sampleChannelBicubic(t,e,s)}sampleChannelBicubicUV(t,e,n){const r=t*this.width,i=e*this.height;return this.sampleChannelBicubic(r-.5,i-.5,n)}sampleChannelBicubic(t,e,n){const r=this.itemSize,i=this.width,s=this.height,o=this.data,a=i*r,c=i-1,h=s-1,u=ht(t,0,c),d=ht(e,0,h),l=0|u,p=0|d,y=u-l,w=d-p,_=f(0,l-1),m=f(0,p-1),v=g(c,l+1),x=g(h,p+1),A=g(c,v+1),b=m*a+n,E=p*a+n,$=x*a+n,F=g(h,x+1)*a+n,U=_*r,S=l*r,z=v*r,C=A*r,V=o[b+U],B=o[b+S],q=o[b+z],L=o[b+C],T=o[E+U],M=o[E+S],I=o[E+z],k=o[E+C],N=o[$+U],O=o[$+S],j=o[$+z],D=o[$+C],R=o[F+U],J=o[F+S],P=o[F+z],H=o[F+C],W=dt(y,V,B,q,L),G=dt(y,T,M,I,k),Y=dt(y,N,O,j,D),K=dt(y,R,J,P,H);return dt(w,W,G,Y,K)}sampleBilinearUV(t,e,n,r=0){const i=this.itemSize;for(let s=0;s<i;s++)n[s+r]=this.sampleChannelBilinearUV(t,e,s)}sampleBilinear(t,e,n,r=0){const i=this.itemSize;for(let s=0;s<i;s++)n[s+r]=this.sampleChannelBilinear(t,e,s)}sampleChannelBilinearUV(t,e,n){const r=t*this.width-.5,i=e*this.height-.5;return this.sampleChannelBilinear(r,i,n)}sampleChannelBilinear(t,e,n){const r=this.itemSize,i=this.width,s=i*r,o=this.height-1,a=ht(t,0,i-1),c=ht(e,0,o),h=a>>>0,u=c>>>0,d=u*s,l=h*r+n,f=d+l;let g,p;g=a===h?h:h+1,p=c===u?u:u+1;const y=this.data,w=y[f];if(h===g&&u===p)return w;const _=a-h,m=c-u,v=g*r+n,x=p*s,A=x+l,b=x+v,E=y[d+v],$=y[A],F=y[b],U=ut(w,E,_),S=ut($,F,_);return ut(U,S,m)}sampleNearestUV(t,e,n){const r=this.width,i=this.height,s=Math.round(t*r-.5),o=Math.round(e*i-.5);this.read(ht(s,0,r-1),ht(o,0,i-1),n)}readChannel(t,e,n){const r=(e*this.width+t)*this.itemSize+n;return this.data[r]}read(t,e,n){const r=this.width,i=this.itemSize,s=(e*r+t)*i;for(let t=0;t<i;t++)n[t]=this.data[s+t]}write(t,e,n){const r=this.width,i=this.itemSize,s=(e*r+t)*i;for(let t=0;t<i;t++)this.data[s+t]=n[t];this.version++}point2index(t,e){return t+e*this.width}index2point(t,e){const n=this.width,r=t%n,i=t/n|0;e.set(r,i)}copy(t,e,n,r,i,s,o){const a=Math.min(s,t.width-e,this.width-r),c=Math.min(o,t.height-n,this.height-i),h=this.itemSize,u=t.itemSize,d=Math.min(h,u),l=h*this.width,f=u*t.width,g=t.data,p=this.data;let y,w,_;for(w=0;w<c;w++){const t=(w+i)*l,s=(w+n)*f;for(y=0;y<a;y++){const n=t+(y+r)*h,i=s+(y+e)*u;for(_=0;_<d;_++)p[n+_]=g[i+_]}}this.version++}zeroFill(t,e,n,r){const i=ht(t,0,this.width),s=ht(e,0,this.height),o=ht(t+n,0,this.width),a=ht(e+r,0,this.height),c=this.data,h=this.itemSize,u=h*this.width,d=i*h,l=o*h;let f;for(f=s;f<a;f++){const t=f*u;c.fill(0,t+d,t+l)}this.version++}channelFill(t,e){const n=this.itemSize,r=this.data,i=r.length;for(let s=t;s<i;s+=n)r[s]=e;this.version++}fill(t,e,n,r,i){const s=this.width,o=this.height,a=ht(t,0,s),c=ht(e,0,o),h=ht(t+n,0,s),u=ht(e+r,0,o),d=this.data,l=this.itemSize,f=l*s;let g,p,y;for(g=c;g<u;g++){const t=g*f;for(p=a;p<h;p++){const e=t+p*l;for(y=0;y<l;y++)d[e+y]=i[y]}}this.version++}writeChannel(t,e,n,r){const i=(e*this.width+t)*this.itemSize+n;this.data[i]=r,this.version++}traverseCircle(t,e,n,r){let i,s;const o=0|t,a=0|e,c=n*n,h=Math.ceil(n);for(s=-h;s<=h;s++){const t=s*s;for(i=-h;i<=h;i++)i*i+t<=c&&r(o+i,a+s,this)}}resize(t,e,n=!0){const r=this.width,i=this.height;if(r===t&&i===e)return;const s=this.itemSize,o=t*e*s,a=this.data,c=new(function(t){if(t instanceof Int8Array)return Int8Array;if(t instanceof Int16Array)return Int16Array;if(t instanceof Int32Array)return Int32Array;if(t instanceof Uint8Array)return Uint8Array;if(t instanceof Uint8ClampedArray)return Uint8ClampedArray;if(t instanceof Uint16Array)return Uint16Array;if(t instanceof Uint32Array)return Uint32Array;if(t instanceof Float32Array)return Float32Array;if(t instanceof Float64Array)return Float64Array;if(Array.isArray(t))return Array;throw new TypeError("Unsupported array type")}(a))(o);if(n)if(t===r)c.set(a.subarray(0,Math.min(a.length,o)));else{const n=g(e,i),o=g(t,r);for(let e=0;e<n;e++)for(let n=0;n<o;n++){const i=(e*t+n)*s,o=(e*r+n)*s;for(let t=0;t<s;t++)c[i+t]=a[o+t]}}this.width=t,this.height=e,this.data=c,this.version++}computeByteSize(){let t;const e=this.data;return t=Array.isArray(e)?8*e.length:e.byteLength,t+280}equals(e){return 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