From ee57b197e5f95155a867eb9a83c4511f2c7da474 Mon Sep 17 00:00:00 2001
From: Roman Zoller <roman.zoller@camptocamp.com>
Date: Tue, 5 Feb 2019 17:44:46 +0100
Subject: [PATCH] Fix offset passed from linearRingssAreOriented to
 linearRingsAreOriented

The offset needs to be set to the end of the previous Polygon,
see `offset = orientLinearRings(...)` in function orientLinearRingsArray

Fixes #9189
---
 src/ol/geom/flat/orient.js | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/ol/geom/flat/orient.js b/src/ol/geom/flat/orient.js
index 80ec9ab611..8eb9dd1ab5 100644
--- a/src/ol/geom/flat/orient.js
+++ b/src/ol/geom/flat/orient.js
@@ -77,10 +77,14 @@ export function linearRingsAreOriented(flatCoordinates, offset, ends, stride, op
  */
 export function linearRingssAreOriented(flatCoordinates, offset, endss, stride, opt_right) {
   for (let i = 0, ii = endss.length; i < ii; ++i) {
+    const ends = endss[i];
     if (!linearRingsAreOriented(
-      flatCoordinates, offset, endss[i], stride, opt_right)) {
+      flatCoordinates, offset, ends, stride, opt_right)) {
       return false;
     }
+    if (ends.length) {
+      offset = ends[ends.length - 1];
+    }
   }
   return true;
 }