Add unit test if circular arc segmentation produces the same vertices…

… in both directions
qgis · Feb 22, 2017 · 08c2e66 · 08c2e66
1 parent 07cbfdd
commit 08c2e66
Showing 1 changed file with 24 additions and 0 deletions.
diff --git a/tests/src/core/testqgsgeometry.cpp b/tests/src/core/testqgsgeometry.cpp
@@ -111,6 +111,7 @@ class TestQgsGeometry : public QObject
     void wkbInOut();
 
     void segmentizeCircularString();
+    void directionNeutralSegmentation();
     void poleOfInaccessibility();
 
     void makeValid();
@@ -4035,6 +4036,29 @@ void TestQgsGeometry::segmentizeCircularString()
   QVERIFY( points.contains( QgsPointV2( 0.5, 0.5 ) ) );
 }
 
+void TestQgsGeometry::directionNeutralSegmentation()
+{
+  //Tests, if segmentation of a circularstring is the same in both directions
+  QString CWCircularStringWkt( QStringLiteral( "CIRCULARSTRING( 0 0, 0.5 0.5, 0.83 7.33 )" ) );
+  QgsCircularString* CWCircularString = dynamic_cast<QgsCircularString*>( QgsGeometryFactory::geomFromWkt( CWCircularStringWkt ) );
+  QgsLineString* CWLineString = CWCircularString->curveToLine();
+
+  QString CCWCircularStringWkt( QStringLiteral( "CIRCULARSTRING( 0.83 7.33, 0.5 0.5, 0 0 )" ) );
+  QgsCircularString* CCWCircularString = dynamic_cast<QgsCircularString*>( QgsGeometryFactory::geomFromWkt( CCWCircularStringWkt ) );
+  QgsLineString* CCWLineString = CCWCircularString->curveToLine();
+  QgsLineString* reversedCCWLineString = CCWLineString->reversed();
+
+  bool equal = ( *CWLineString == *reversedCCWLineString );
+
+  delete CWCircularString;
+  delete CCWCircularString;
+  delete CWLineString;
+  delete CCWLineString;
+  delete reversedCCWLineString;
+
+  QVERIFY( equal );
+}
+
 void TestQgsGeometry::poleOfInaccessibility()
 {
   QString poly1Wkt( "Polygon ((3116 3071, 3394 3431, 3563 3362, 3611 3205, 3599 3181, 3477 3281, 3449 3160, 3570 3127, 3354 3116,"