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Interpolate the closing edge of polygons, geodesic or not #11

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Merged
wf9a5m75 merged 2 commits into from
Nov 8, 2026
Merged

Interpolate the closing edge of polygons, geodesic or not #11

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c2fb5b6
Interpolate the closing edge of geodesic polygon rings
wf9a5m75 Nov 8, 2026
d68dd6b
Densify the closing edge of non-geodesic polygon rings too
wf9a5m75 Nov 8, 2026
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6 changes: 4 additions & 2 deletions src/polygon/HerePolygonOverlayRenderer.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -9,7 +9,7 @@
*/
import {
AbstractPolygonOverlayRenderer,
densifyAndNormalize,
densifyPolygonRing,
type PolygonEntity,
type PolygonState,
} from '@mapconductor/js-sdk-core';
Expand Down Expand Up @@ -98,7 +98,9 @@ function buildLineString(
// Core pipeline: densify (great-circle when geodesic, linear lat/lng
// otherwise — Android's straight-line semantics) and normalize into HERE's
// [-180, 180] longitude range.
for (const point of densifyAndNormalize(points, geodesic)) {
// リングの閉じる辺（末尾 → 先頭）も他の辺と同じく補間する（輪郭と同じ線にする）。
const ring = densifyPolygonRing(points, geodesic).map((point) => point.normalize());
for (const point of ring) {
lineString.pushPoint(toGeoCoordinates(point));
}
return lineString;
Expand Down