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@americana/maplibre-shield-generator

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@americana/maplibre-shield-generator - npm Package Compare versions

Comparing version 0.0.1-alpha.17 to 0.0.1-alpha.18

4

dist/index.js

@@ -1,3 +0,3 @@

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n=i.offset==null?0:i.offset,o=i.fillColor==null?"white":i.fillColor,r=i.strokeColor==null?"black":i.strokeColor,s=i.radius==null?0:i.radius,h=i.outlineWidth==null?1:i.outlineWidth,g=z(t,i,l),y=t.px(h),u=y/2,a=t.px(s),f=t.px(n),p=u,S=g-u,d=u,c=t.shieldSize()-u,w=(p+S)/2,b=d+f,m=c-f,x=a*Math.tan(Math.PI/4-Math.asin(f/(w-p))/2),C=b+x,k=m-x;return e.beginPath(),e.moveTo(w,c),e.arcTo(p,m,p,k,a),e.arcTo(p,b,w,d,a),e.lineTo(w,d),e.arcTo(S,b,S,C,a),e.arcTo(S,m,w,c,a),e.lineTo(w,c),e.closePath(),e.lineWidth=y,e.fillStyle=o,e.fill(),r!=null&&(e.strokeStyle=r,e.stroke()),g}function Tt(t,e,i,l){let 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this._emptySpriteCache||(this._emptySpriteCache=this.gfxFactory.createGraphics({width:1,height:1})),this._emptySpriteCache}px(e){return e*this.gfxFactory.pixelRatio()}shieldSize(){return this.px(this.options.shieldSize)}},ue=class{map;constructor(e){this.map=e}getSprite(e){return this.map.style.getImage(e)}putSprite(e,i,l){this.map.addImage(e,i,{pixelRatio:l})}},Z=class{_shieldPredicate=()=>!0;_networkPredicate=()=>!0;_routeParser;_renderContext;constructor(e){this._routeParser=e,this._renderContext=new se,this._renderContext.gfxFactory=new K}setShields(e){this._renderContext.options=e.options,this._renderContext.shieldDef=e.networks}debugOptions(e){return this._renderContext.debugOptions=e,this}filterImageID(e){return this._shieldPredicate=e,this}filterNetwork(e){return this._networkPredicate=e,this}graphicsFactory(e){return this._renderContext.gfxFactory=e,this}renderOnMaplibreGL(e){return this.renderOnRepository(new ue(e)),e.on("styleimagemissing",this.getStyleImageMissingHandler()),this}renderOnRepository(e){return this._renderContext.spriteRepo||(this._renderContext.spriteRepo=e),this}getStyleImageMissingHandler(){return e=>{try{if(!this._shieldPredicate(e.id))return;let i=this._routeParser.parse(e.id);if(!this._networkPredicate(i.network)){Xe(this._renderContext,e.id);return}i.spriteID=e.id,this._renderContext.debugOptions=this.debugOptions,i&&Le(this._renderContext,i)}catch(i){console.error(`Exception while loading image \u2018${e?.id}\u2019:
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n=i.fillColor==null?"white":i.fillColor,o=i.strokeColor==null?"black":i.strokeColor,a=i.radius==null?0:i.radius,s=i.outlineWidth==null?1:i.outlineWidth,h=Y(t,"diamond"),p=z(t,i,l,"diamond"),y=t.px(s),u=y/2,r=t.px(a),f=u,g=p-u,S=u,d=h-u,c=(f+g)/2,w=(S+d)/2,b=Math.atan((c-r-f)/(d-r-w)),m=Math.sin(b),x=Math.cos(b),k=Math.tan(b/2),C=Math.tan(Math.PI/4-b/2),T=f+r*(1-x),M=c-r*x,v=c-r*C,R=c+r*C,W=c+r*x,P=g-r*(1-x),_=S+r*(1-m),B=w-r*m,F=w-r*k,H=w+r*k,A=w+r*m,O=d-r*(1-m);return e.beginPath(),e.moveTo(c,d),e.arcTo(v,d,T,A,r),e.arcTo(f,H,f,w,r),e.arcTo(f,F,M,_,r),e.arcTo(v,S,c,S,r),e.arcTo(R,S,P,B,r),e.arcTo(g,F,g,w,r),e.arcTo(g,H,W,O,r),e.arcTo(R,d,c,d,r),e.closePath(),e.lineWidth=y,e.fillStyle=n,e.fill(),o!=null&&(e.strokeStyle=o,e.stroke()),p}function Tt(t,e,i,l){let n=i.pointUp==null?!0:i.pointUp,o=i.offset==null?0:i.offset,a=i.angle==null?0:i.angle,s=i.fillColor==null?"white":i.fillColor,h=i.strokeColor==null?"black":i.strokeColor,p=i.radius1==null?0:i.radius1,y=i.radius2==null?0:i.radius2,u=i.outlineWidth==null?1:i.outlineWidth,r=n?-1:1,f=Math.sin(a),g=Math.cos(a),S=Math.tan(a),d=z(t,i,l,"pentagon"),c=t.px(u),w=c/2,b=t.px(p),m=t.px(y),x=t.px(o),k=w,C=d-w,T=n?t.shieldSize()-w:w,M=n?w:t.shieldSize()-w,v=M-r*x,R=k+r*(v-T)*S,W=(k+C)/2,P=C-r*(v-T)*S,_=Math.atan(x/(W-k)),B=(Math.PI/2-_+a)/2,F=Math.tan(B),H=(Math.PI/2-a)/2,A=Math.tan(H),O=k+b*F*f,$=R+m*A,E=P-m*A,X=C-b*F*f,j=v-r*b*F*g;return e.beginPath(),e.moveTo(W,M),e.arcTo(k,v,O,j,b),e.arcTo(R,T,$,T,m),e.lineTo(E,T),e.arcTo(P,T,X,j,m),e.arcTo(C,v,W,M,b),e.closePath(),e.lineWidth=c,e.fillStyle=s,e.fill(),h!=null&&(e.strokeStyle=h,e.stroke()),d}function vt(t,e,i,l){let n=i.offset==null?0:i.offset,o=i.fillColor==null?"white":i.fillColor,a=i.strokeColor==null?"black":i.strokeColor,s=i.radius==null?0:i.radius,h=i.outlineWidth==null?1:i.outlineWidth,p=z(t,i,l),y=t.px(h),u=y/2,r=t.px(s),f=t.px(n),g=u,S=p-u,d=u,c=t.shieldSize()-u,w=(g+S)/2,b=d+f,m=c-f,x=r*Math.tan(Math.PI/4-Math.asin(f/(w-g))/2),k=b+x,C=m-x;return e.beginPath(),e.moveTo(w,c),e.arcTo(g,m,g,C,r),e.arcTo(g,b,w,d,r),e.lineTo(w,d),e.arcTo(S,b,S,k,r),e.arcTo(S,m,w,c,r),e.lineTo(w,c),e.closePath(),e.lineWidth=y,e.fillStyle=o,e.fill(),a!=null&&(e.strokeStyle=a,e.stroke()),p}function Mt(t,e,i,l){let n=i.angle==null?0:i.angle,o=i.fillColor==null?"white":i.fillColor,a=i.strokeColor==null?"black":i.strokeColor,s=i.radius==null?0:i.radius,h=i.outlineWidth==null?1:i.outlineWidth,p=Math.sin(n),y=Math.cos(n),u=Math.tan(n),r=Math.tan(Math.PI/4-n/2),f=z(t,i,l,"hexagonHorizontal"),g=t.px(h),S=g/2,d=t.px(s),c=S,w=f-S,b=S,m=t.shieldSize()-S,x=(b+m)/2,k=b+d*r*y,C=x-d*p,T=x+d*p,M=m-d*r*y,v=c+(x-C)*u,R=c+(x-b)*u,W=w-(x-b)*u,P=w-(x-C)*u,_=R-d*r*p,B=R+d*r,F=W-d*r,H=W+d*r*p;return e.beginPath(),e.moveTo(B,b),e.arcTo(W,b,H,k,d),e.arcTo(w,x,P,T,d),e.arcTo(W,m,F,m,d),e.arcTo(R,m,_,M,d),e.arcTo(c,x,v,C,d),e.arcTo(R,b,B,b,d),e.closePath(),e.lineWidth=g,e.fillStyle=o,e.fill(),a!=null&&(e.strokeStyle=a,e.stroke()),f}function Rt(t,e,i,l){let n=i.offset==null?0:i.offset,o=i.angle==null?0:i.angle,a=i.fillColor==null?"white":i.fillColor,s=i.strokeColor==null?"black":i.strokeColor,h=i.radius==null?0:i.radius,p=i.outlineWidth==null?1:i.outlineWidth,y=Math.sin(o),u=Math.cos(o),r=Math.tan(o),f=z(t,i,l),g=t.px(p),S=g/2,d=t.px(h),c=t.px(n),w=S,b=f-S,m=S,x=t.shieldSize()-S,k=w+d*r*y,C=(w+b)/2,T=b-d*r*y,M=m+c,v=(m+x)/2,R=x-c,W=w+(v-M)*r,P=b-(v-M)*r,_=v-d*r*u,B=v+d*r*u,F=Math.atan(c/(C-W)),H=Math.sin(F),A=Math.cos(F),O=(Math.PI/2-o-F)/2,$=Math.cos(O),E=d*Math.cos(o+O)/$,X=d*Math.sin(o+O)/$,j=W+E-d*u,qe=W+E-d*H,Ve=P-E+d*H,$e=P-E+d*u,je=M+X-d*A,Je=M+X-d*y,Qe=R-X+d*y,Ye=R-X+d*A;return e.beginPath(),e.moveTo(C,x),e.arcTo(W,R,j,Qe,d),e.arcTo(w,v,k,_,d),e.arcTo(W,M,qe,je,d),e.lineTo(C,m),e.arcTo(P,M,$e,Je,d),e.arcTo(b,v,T,B,d),e.arcTo(P,R,Ve,Ye,d),e.lineTo(C,x),e.closePath(),e.lineWidth=g,e.fillStyle=a,e.fill(),s!=null&&(e.strokeStyle=s,e.stroke()),f}function Y(t,e){switch(e){case"diamond":return t.shieldSize()+t.px(4);default:return t.shieldSize()}}function He(t,e,i,l,n){return Ge[e](t,i,l,n)}var Ge={},ae={};function I(t,e,i){Ge[t]=e,i!==void 0&&(ae[t]=i)}I("diamond",kt);I("ellipse",wt);I("escutcheon",bt);I("fishhead",xt);I("hexagonVertical",vt);I("hexagonHorizontal",Mt);I("octagonVertical",Rt);I("pentagon",Tt);I("roundedRectangle",Q);I("trapezoid",Ct);I("triangle",mt);Pe();function Ae(t,e,i,l){if(i==null||typeof i.banners>"u")return e;for(var n=0;n<i.banners.length;n++)l(t,e,i.banners[n],n);return e}function Wt(t,e,i){return{width:e.width,height:e.height+i*t.px(t.options.bannerHeight+t.options.bannerPadding)}}function re(t){return t!==null&&t.length!==0&&t.length<=6}function de(t){return t==null||typeof t.banners>"u"?0:t.banners.length}function Oe(t,e,i){var l=null,n,o=0,a;if(Array.isArray(e.spriteBlank))for(var s=0;s<e.spriteBlank.length&&(l=t.spriteRepo.getSprite(e.spriteBlank[s]),a=Wt(t,l.data,o),n=V(t,i.ref,e,a),!(n.fontPx>t.px(q)));s++);else l=t.spriteRepo.getSprite(e.spriteBlank);return l}function Pt(t){return t!=null&&typeof t.textColor<"u"?t.textColor:"black"}function Le(t){return typeof t.shapeBlank<"u"?(e,i,l)=>He(e,t.shapeBlank.drawFunc,i,t.shapeBlank.params,l):_e}function Ft(t,e,i,l){let o=de(i)*t.px(t.options.bannerHeight);e.save(),e.translate(0,o),Le(i)(t,e,l.ref),e.restore()}function Bt(t,e){return typeof e.shapeBlank<"u"?Y(t,e.shapeBlank.drawFunc):t.shieldSize()}function It(t,e,i,l){var n=de(i),o=null,a=Oe(t,i,l);let s=n*t.px(t.options.bannerHeight);if(a==null?(e.translate(0,s),Le(i)(t,e,l.ref),e.translate(0,-s),o={width:e.canvas.width,height:Bt(t,i)}):o={width:a.data.width,height:a.data.height},i.notext)return e;var h=V(t,l.ref,i,o);return h.yBaseline+=n*t.px(t.options.bannerHeight),typeof t.options.SHIELD_TEXT_HALO_COLOR_OVERRIDE<"u"?(e.strokeStyle=options.SHIELD_TEXT_HALO_COLOR_OVERRIDE,ne(t,e,l.ref,h)):i.textHaloColor&&(e.strokeStyle=i.textHaloColor,ne(t,e,l.ref,h)),e.fillStyle=Pt(i),ke(t,e,l.ref,h),t.options.SHIELD_TEXT_BBOX_COLOR&&(e.strokeStyle=t.options.SHIELD_TEXT_BBOX_COLOR,e.lineWidth=t.px(1),e.strokeRect(t.px(i.padding.left-.5),n*t.px(t.options.bannerHeight)+t.px(i.padding.top-.5),o.width-t.px(i.padding.left+i.padding.right-1),o.height-t.px(i.padding.top+i.padding.bottom-1))),e}function Ee(t,e){let i=he(t,e);i==null&&(console.warn("Didn't produce a shield for",JSON.stringify(e)),i=t.gfxFactory.createGraphics({width:1,height:1})),Xe(t,e.spriteID,i)}function Xe(t,e,i){let l=i.getImageData(0,0,i.canvas.width,i.canvas.height);t.spriteRepo.putSprite(e,{width:i.canvas.width,height:i.canvas.height,data:l.data},t.px(1))}function Ne(t,e){Xe(t,e,t.emptySprite())}function Ue(t,e){return e.refsByName&&t.name&&e.refsByName[t.name]?e.refsByName[t.name]:t.ref}function zt(t,e){var i=t[e.network];if(e==null)return null;if(i==null)return console.debug("Generic shield for",JSON.stringify(e)),re(e.ref)?t.default:null;var l=Ue(e,i);return i.overrideByRef&&(i={...i,...i.overrideByRef[l]}),i.overrideByName&&(i={...i,...i.overrideByName[e.name||""]}),!re(l)&&"noref"in i&&(i=i.noref,i.notext=!0),!re(l)&&!i.notext&&!(i.refsByName&&e.name)?null:i}function _t(t){let e=parseInt(t,10);if(isNaN(e))return t;let i="M".repeat(e/1e3)+"D".repeat(e%1e3/500)+"C".repeat(e%500/100)+"L".repeat(e%100/50)+"X".repeat(e%50/10)+"V".repeat(e%10/5)+"I".repeat(e%5);return i=i.replace("DCCCC","CM").replace("CCCC","CD").replace("LXXXX","XC").replace("XXXX","XL").replace("VIIII","IX").replace("IIII","IV"),i+t.slice(e.toString().length)}function Ht(t,e,i){let l=Math.max(t.shieldSize(),z(t,e.shapeBlank.params,i,e.shapeBlank.drawFunc)),n=Y(t,e.shapeBlank.drawFunc);return{width:l,height:n}}function he(t,e){let i=zt(t.shieldDef,e);if(i==null)return null;e.ref=Ue(e,i);let l=de(i),n=Oe(t,i,e),o=t.shieldSize(),a=t.shieldSize();if(n==null){if(typeof i.shapeBlank<"u"){let p=Ht(t,i,e.ref);o=p.width,a=p.height}}else o=n.data.width,a=n.data.height;let s=l*t.px(t.options.bannerHeight);a+=s;let h=t.gfxFactory.createGraphics({width:o,height:a});return e.ref&&i.numberingSystem==="roman"&&(e.ref=_t(e.ref)),Ae(t,h,i,Me),n==null?Ft(t,h,i,e):le(h,n,s,i.verticalReflect,i.colorLighten,i.colorDarken),It(t,h,i,e),Ae(t,h,i,ve),h}function De(){return(typeof window<"u"&&window.devicePixelRatio)>1?2:1}var K=class{createGraphics(e){var i=document.createElement("canvas").getContext("2d"),i=document.createElement("canvas").getContext("2d",{willReadFrequently:!0});return i.imageSmoothingQuality="high",i.textAlign="center",i.textBaseline="top",i.canvas.width=e.width,i.canvas.height=e.height,i}pixelRatio(){return De()}};var se=class{shieldDef;options;debugOptions;gfxFactory;spriteRepo;_emptySpriteCache;emptySprite(){return this._emptySpriteCache||(this._emptySpriteCache=this.gfxFactory.createGraphics({width:1,height:1})),this._emptySpriteCache}px(e){return e*this.gfxFactory.pixelRatio()}shieldSize(){return this.px(this.options.shieldSize)}},ue=class{map;constructor(e){this.map=e}getSprite(e){return this.map.style.getImage(e)}putSprite(e,i,l){this.map.addImage(e,i,{pixelRatio:l})}},Z=class{_shieldPredicate=()=>!0;_networkPredicate=()=>!0;_routeParser;_renderContext;constructor(e){this._routeParser=e,this._renderContext=new se,this._renderContext.gfxFactory=new K}setShields(e){this._renderContext.options=e.options,this._renderContext.shieldDef=e.networks}debugOptions(e){return this._renderContext.debugOptions=e,this}filterImageID(e){return this._shieldPredicate=e,this}filterNetwork(e){return this._networkPredicate=e,this}graphicsFactory(e){return this._renderContext.gfxFactory=e,this}renderOnMaplibreGL(e){return this.renderOnRepository(new ue(e)),e.on("styleimagemissing",this.getStyleImageMissingHandler()),this}renderOnRepository(e){return this._renderContext.spriteRepo||(this._renderContext.spriteRepo=e),this}getStyleImageMissingHandler(){return e=>{try{if(!this._shieldPredicate(e.id))return;let i=this._routeParser.parse(e.id);if(!this._networkPredicate(i.network)){Ne(this._renderContext,e.id);return}i.spriteID=e.id,this._renderContext.debugOptions=this.debugOptions,i&&Ee(this._renderContext,i)}catch(i){console.error(`Exception while loading image \u2018${e?.id}\u2019:
`,i)}}}getGraphicForRoute(e,i,l){return he(this._renderContext,{network:e,ref:i,name:l,spriteID:this._routeParser.format(e,i,l)})}emptySprite(){return this._renderContext.emptySprite()}createGraphics(e){return this._renderContext.gfxFactory.createGraphics(e)}pixelRatio(){return this._renderContext.px(1)}},fe=class extends Z{constructor(e,i){super(i),this.setShields(e)}},ge=class extends Z{constructor(e,i){super(i),this.setShieldURL(e)}async setShieldURL(e){await fetch(e).then(i=>i.json()).then(i=>super.setShields(i)).catch(i=>console.error(i))}},ee=class{sprites={};getSprite(e){return this.sprites[e]}hasSprite(e){return e in this.sprites}putSprite(e,i){this.sprites[e]=i}},Zt=new ee;export{ee as InMemorySpriteRepository,fe as ShieldRenderer,ge as URLShieldRenderer,De as getDOMPixelRatio,le as transposeImageData};
//# sourceMappingURL=index.js.map

2

package.json
{
"name": "@americana/maplibre-shield-generator",
"description": "Generate highway shields for maplibre-gl-js maps",
"version": "0.0.1-alpha.17",
"version": "0.0.1-alpha.18",
"author": "OpenStreetMap Americana Contributors",

@@ -6,0 +6,0 @@ "type": "module",

76

README.md

@@ -16,2 +16,3 @@ # Americana Shield Renderer

3. **Define a parser that describes how route information is encoded**. There are three parts to a route definition:
1. The `network` string, which defines a network with a common shield shape, graphic, and color

@@ -21,33 +22,34 @@ 1. The `ref` string, which defines a text sequence that should be drawn on top of the shield graphic

```typescript
let routeParser = {
//format is `shield|${network}=${ref}|${name}`
parse: (id: string) => {
let id_parts = id.split("|");
let network_ref = id_parts[1].split("=");
```typescript
let routeParser = {
//format is `shield|${network}=${ref}|${name}`
parse: (id: string) => {
let id_parts = id.split("|");
let network_ref = id_parts[1].split("=");
return {
network: network_ref[0],
ref: network_ref[1],
name: id_parts[2],
};
},
format: (network: string, ref: string, name: string) =>
`shield|${network}=${ref}|${name}`,
};
```
return {
network: network_ref[0],
ref: network_ref[1],
name: id_parts[2],
};
},
format: (network: string, ref: string, name: string) =>
`shield|${network}=${ref}|${name}`,
};
```
4. **(Optional) Create predicates that define which shields will be handled**. For example, if all sprite IDs in your style that need a shield begin with the string `shield|`, this would look like:
```typescript
let shieldPredicate = (imageID: string) => imageID.startsWith("shield");
```
```typescript
let shieldPredicate = (imageID: string) => imageID.startsWith("shield");
```
This step can be skipped if all unhandled image IDs are shields.
This step can be skipped if all unhandled image IDs are shields.
Additionally, you can specify which networks will be handled. The example below ignores all nwn, lwn, ncn, etc network values:
Additionally, you can specify which networks will be handled. The example below ignores all `nwn`, `lwn`, `ncn`, etc. network values:
```typescript
let networkPredicate = (network: string) => !/^[lrni][chimpw]n$/.test(network);
```
```typescript
let networkPredicate = (network: string) =>
!/^[lrni][chimpw]n$/.test(network);
```

@@ -58,15 +60,15 @@ 5. **Create shield definitions and artwork**. The shield definition is expressed as a JSON file along with a set of sprites containing any raster artwork used for the shields. It can be generated as an object or hosted as a JSON file accessible by URL. See the next section for how to create this definition.

```typescript
new URLShieldRenderer("shields.json", routeParser)
.filterImageID(shieldPredicate)
.filterNetwork(networkPredicate)
.renderOnMaplibreGL(map);
```
```typescript
new URLShieldRenderer("shields.json", routeParser)
.filterImageID(shieldPredicate)
.filterNetwork(networkPredicate)
.renderOnMaplibreGL(map);
```
```typescript
new ShieldRenderer(shields, routeParser)
.filterImageID(shieldPredicate)
.filterNetwork(networkPredicate)
.renderOnMaplibreGL(map);
```
```typescript
new ShieldRenderer(shields, routeParser)
.filterImageID(shieldPredicate)
.filterNetwork(networkPredicate)
.renderOnMaplibreGL(map);
```

@@ -276,2 +278,3 @@ ## Shield Definition

- `diamond`
- `ellipse`

@@ -281,2 +284,3 @@ - `rect`

- `southHalfEllipse`
- `triangleDown`

@@ -283,0 +287,0 @@ ### Defining drawn shield shapes

dist/index.js.map

Sorry, the diff of this file is not supported yet

src/shield_text.mjs

Sorry, the diff of this file is not supported yet

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