fix for sextante/convexhull tool based on field

the tool does not work if option "Create convex hulls based on field" is used to due of missing some methods. This patch fixes the issue.
qgis · Dec 14, 2012 · 7e34355 · 7e34355
1 parent 32f0dfd
commit 7e34355
Showing 1 changed file with 22 additions and 0 deletions.
diff --git a/python/plugins/sextante/ftools/ConvexHull.py b/python/plugins/sextante/ftools/ConvexHull.py
@@ -184,6 +184,28 @@ def processAlgorithm(self, progress):
         if not FEATURE_EXCEPT:
             SextanteLog.addToLog(SextanteLog.LOG_WARNING, "Feature exception while computing convex hull")
 
+    def simpleMeasure(self, inGeom ):
+        measure = QgsDistanceArea()
+        attr1 = measure.measure(inGeom)
+        if inGeom.type() == QGis.Polygon:
+          attr2 = self.perimMeasure( inGeom, measure )
+        else:
+          attr2 = attr1
+        return ( attr1, attr2 )
+
+    def perimMeasure(self, inGeom, measure ):
+        value = 0.00
+        if inGeom.isMultipart():
+          poly = inGeom.asMultiPolygon()
+          for k in poly:
+            for j in k:
+              value = value + measure.measureLine( j )
+        else:
+          poly = inGeom.asPolygon()
+          for k in poly:
+            value = value + measure.measureLine( k )
+        return value
+
     def defineCharacteristics(self):
         self.name = "Convex hull"
         self.group = "Geoprocessing tools"