Merge pull request #12409 from M393/wmts-bounding-box

Fix WMTS wrapX detection if WGS84BoundingBox is not set

src/ol/source/WMTS.js

@@ -9,7 +9,7 @@ import {assign} from '../obj.js';
 import {containsExtent} from '../extent.js';
 import {createFromCapabilitiesMatrixSet} from '../tilegrid/WMTS.js';
 import {createFromTileUrlFunctions, expandUrl} from '../tileurlfunction.js';
-import {equivalent, get as getProjection} from '../proj.js';
+import {equivalent, get as getProjection, transformExtent} from '../proj.js';
 import {find, findIndex, includes} from '../array.js';
 
 /**
@@ -497,9 +497,21 @@ export function optionsFromCapabilities(wmtsCap, config) {
     const wgs84BoundingBox = l['WGS84BoundingBox'];
     const wgs84ProjectionExtent = getProjection('EPSG:4326').getExtent();
     extent = matrixSetExtent;
-    wrapX =
-      wgs84BoundingBox[0] === wgs84ProjectionExtent[0] &&
-      wgs84BoundingBox[2] === wgs84ProjectionExtent[2];
+    if (wgs84BoundingBox) {
+      wrapX =
+        wgs84BoundingBox[0] === wgs84ProjectionExtent[0] &&
+        wgs84BoundingBox[2] === wgs84ProjectionExtent[2];
+    } else {
+      const wgs84MatrixSetExtent = transformExtent(
+        matrixSetExtent,
+        matrixSetObj['SupportedCRS'],
+        'EPSG:4326'
+      );
+      // Ignore slight deviation from the correct x limits
+      wrapX =
+        wgs84MatrixSetExtent[0] - 1e-10 <= wgs84ProjectionExtent[0] &&
+        wgs84MatrixSetExtent[2] + 1e-10 >= wgs84ProjectionExtent[2];
+    }
   }
 
   const tileGrid = createFromCapabilitiesMatrixSet(

test/browser/spec/ol/source/wmts.test.js

@@ -458,6 +458,56 @@ describe('ol.source.WMTS', function () {
       expectDelta(extent[3], expectedMatrixSetExtend[3]);
     });
   });
+  describe('set wrap x by bounding box if available', function () {
+    const parser = new WMTSCapabilities();
+    let capabilities;
+    before(function (done) {
+      afterLoadText(
+        'spec/ol/format/wmts/capabilities_wrapx.xml',
+        function (xml) {
+          try {
+            capabilities = parser.read(xml);
+          } catch (e) {
+            done(e);
+          }
+          done();
+        }
+      );
+    });
+
+    it('sets wrapx when no bounding box is set', function () {
+      const options = optionsFromCapabilities(capabilities, {
+        layer: 'no-bb',
+        matrixSet: 'EPSG:3857',
+        crossOrigin: 'anonymous',
+      });
+      expect(options.wrapX).to.be(true);
+    });
+    it('sets wrapx when only wgs 84 bb is set', function () {
+      const options = optionsFromCapabilities(capabilities, {
+        layer: 'only-wgs84-bb',
+        matrixSet: 'EPSG:3857',
+        crossOrigin: 'anonymous',
+      });
+      expect(options.wrapX).to.be(true);
+    });
+    it('does not set wrapx when wgs84 bb is set', function () {
+      const options = optionsFromCapabilities(capabilities, {
+        layer: 'no-wrap-wgs84-bb',
+        matrixSet: 'EPSG:3857',
+        crossOrigin: 'anonymous',
+      });
+      expect(options.wrapX).to.be(false);
+    });
+    it('does not set wrapx when tile matrix does not wrap', function () {
+      const options = optionsFromCapabilities(capabilities, {
+        layer: 'no-wrap-tm',
+        matrixSet: 'EPSG:3857',
+        crossOrigin: 'anonymous',
+      });
+      expect(options.wrapX).to.be(false);
+    });
+  });
   describe('when creating options from capabilities with TileMatrixSetLink', function () {
     const parser = new WMTSCapabilities();
     let capabilities;