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add new simplify tool to the fTools. Completed changes introduced in r14678

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git-svn-id: http://svn.osgeo.org/qgis/trunk@14686 c8812cc2-4d05-0410-92ff-de0c093fc19c
This commit is contained in:
alexbruy 2010-11-15 17:06:08 +00:00
parent c1fbf4827c
commit 2f85efe477
1 changed files with 30 additions and 65 deletions
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39
python/plugins/fTools/tools/doGeometry.py
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@ -90,11 +90,6 @@ class GeometryDialog(QDialog, Ui_Dialog):
self.lineEdit.setVisible(False)
self.cmbField.setVisible(False)
self.field_label.setVisible(False)
elif self.myFunction == 6: # Simplify geometries
self.setWindowTitle( self.tr( "Simplify geometries" ) )
self.label_2.setText( self.tr( "Output shapefile" ) )
self.cmbField.setVisible(False)
self.field_label.setVisible(False)
elif self.myFunction == 7: # Polygon centroids
self.setWindowTitle( self.tr( "Polygon centroids" ) )
self.label_2.setText( self.tr( "Output point shapefile" ) )
@ -136,7 +131,7 @@ class GeometryDialog(QDialog, Ui_Dialog):
#3: Extract nodes
#4: Polygons to lines
#5: Export/Add geometry columns
#6: Simplify geometries
#6: Simplify geometries (disabled)
#7: Polygon centroids
#8: Delaunay triangulation
#9: Polygon from layer extent
@ -218,8 +213,7 @@ class geometryThread( QThread ):
success = self.polygons_to_lines()
elif self.myFunction == 5: # Export/Add geometry columns
success = self.export_geometry_info()
elif self.myFunction == 6: # Simplify geometries
success = self.simplify_geometry()
# note that 6 used to be associated with simplify_geometry
elif self.myFunction == 7: # Polygon centroids
success = self.polygon_centroids()
elif self.myFunction == 8: # Delaunay triangulation
@ -401,35 +395,6 @@ class geometryThread( QThread ):
del writer
return True
def simplify_geometry( self ):
vprovider = self.vlayer.dataProvider()
tolerance = self.myParam
allAttrs = vprovider.attributeIndexes()
vprovider.select( allAttrs )
fields = vprovider.fields()
writer = QgsVectorFileWriter( self.myName, self.myEncoding,
fields, vprovider.geometryType(), vprovider.crs() )
inFeat = QgsFeature()
outFeat = QgsFeature()
nFeat = vprovider.featureCount()
nElement = 0
self.emit( SIGNAL( "runStatus(PyQt_PyObject)" ), 0 )
self.emit( SIGNAL( "runRange(PyQt_PyObject)" ), ( 0, nFeat ) )
self.measure = QgsDistanceArea()
while vprovider.nextFeature( inFeat ):
nElement += 1
self.emit( SIGNAL( "runStatus(PyQt_PyObject)" ), nElement )
inGeom = inFeat.geometry()
atMap = inFeat.attributeMap()
outGeom = QgsGeometry(inGeom.simplify(tolerance))
if outGeom is None:
return "math_error"
outFeat.setAttributeMap( atMap )
outFeat.setGeometry( outGeom )
writer.addFeature( outFeat )
del writer
return True
def polygon_centroids( self ):
vprovider = self.vlayer.dataProvider()
allAttrs = vprovider.attributeIndexes()