disable MapLibre GeoJSON source simplification

ajrothwell · claude · ajrothwell · commit ea4f97f4974d · 2026-02-23T14:22:51.000-05:00
MapLibre's default geojson-vt tolerance (0.375) applies
Douglas-Peucker simplification when converting GeoJSON to
internal vector tiles. This caused visible corner-cutting
on street line geometries at higher zoom levels, separate
from the server-side maxAllowableOffset fix.

Co-Authored-By: Claude Opus 4.6 &lt;noreply@anthropic.com&gt;
diff --git a/package.json b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@phila/layerboard",
-  "version": "3.0.0-beta.24",
+  "version": "3.0.0-beta.25",
   "type": "module",
   "description": "Vue 3 + MapLibre mapping framework for City of Philadelphia applications",
   "main": "./dist/index.js",
diff --git a/src/components/MapPanel.vue b/src/components/MapPanel.vue
@@ -587,7 +587,7 @@ function getDynamicExportLayerSource(layer: TiledLayerConfig) {
 function getSource(layer: any) {
   const data = layerData.value[layer.id];
   // Data should always exist here because we filter with hasSourceReady()
-  return { type: "geojson" as const, data: data! };
+  return { type: "geojson" as const, data: data!, tolerance: 0 };
 }
 
 function getLayerOpacity(layerId: string): number {

Original file line number	Diff line number	Diff line change
`@@ -1,6 +1,6 @@`
`1`	`1`	`{`
`2`	`2`	`"name": "@phila/layerboard",`
`3`		`- "version": "3.0.0-beta.24",`
	`3`	`+ "version": "3.0.0-beta.25",`
`4`	`4`	`"type": "module",`
`5`	`5`	`"description": "Vue 3 + MapLibre mapping framework for City of Philadelphia applications",`
`6`	`6`	`"main": "./dist/index.js",`
Original file line number	Diff line number	Diff line change
`@@ -587,7 +587,7 @@ function getDynamicExportLayerSource(layer: TiledLayerConfig) {`
`587`	`587`	`function getSource(layer: any) {`
`588`	`588`	`const data = layerData.value[layer.id];`
`589`	`589`	`// Data should always exist here because we filter with hasSourceReady()`
`590`		`- return { type: "geojson" as const, data: data! };`
	`590`	`+ return { type: "geojson" as const, data: data!, tolerance: 0 };`
`591`	`591`	`}`
`592`	`592`
`593`	`593`	`function getLayerOpacity(layerId: string): number {`