added algorithm option to gdaldem

git-svn-id: http://svn.osgeo.org/qgis/trunk@15497 c8812cc2-4d05-0410-92ff-de0c093fc19c

Author: brushtyler

python/plugins/GdalTools/tools/doDEM.py

@@ -35,6 +35,7 @@ def __init__(self, iface):
           (self.outputFileEdit, SIGNAL("textChanged(const QString &)")), 
           (self.computeEdgesCheck, SIGNAL("stateChanged(int)"), None, "1.8.0"), 
           (self.bandSpin, SIGNAL("valueChanged(int)"), self.bandCheck), 
+          (self.algorithmCheck, SIGNAL("stateChanged(int)"), None, "1.8.0"), 
           (self.creationOptionsTable, [SIGNAL("cellValueChanged(int, int)"), SIGNAL("rowRemoved()")], self.creationGroupBox), 
           (self.modeCombo, SIGNAL("currentIndexChanged(int)")),
           ([self.hillshadeZFactorSpin, self.hillshadeScaleSpin, self.hillshadeAltitudeSpin, self.hillshadeAzimuthSpin], SIGNAL("valueChanged(double)")), 
@@ -54,6 +55,9 @@ def __init__(self, iface):
 
   def showModeParams(self, index):
       self.stackedWidget.setVisible( index < 4 )
+      self.algorithmCheck.setVisible( index < 3 )
+      if index >= 3:
+        self.algorithmCheck.setChecked( False )
 
   def onLayersChanged(self):
       self.fillInputLayerCombo()
@@ -120,6 +124,8 @@ def getArguments(self):
             arguments << "-exact_color_entry"
           elif self.colorNearestRadio.isChecked():
             arguments << "-nearest_color_entry"
+      if self.algorithmCheck.isChecked():
+        arguments << "-alg" << "ZevenbergenThorne"
       if self.computeEdgesCheck.isChecked():
         arguments << "-compute_edges"
       if self.bandCheck.isChecked():

python/plugins/GdalTools/tools/widgetDEM.ui

@@ -6,8 +6,8 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>418</width>
-    <height>408</height>
+    <width>485</width>
+    <height>437</height>
    </rect>
   </property>
   <property name="sizePolicy">
@@ -104,14 +104,14 @@
        </property>
       </widget>
      </item>
-     <item row="3" column="0">
+     <item row="3" column="0" colspan="2">
       <widget class="QCheckBox" name="computeEdgesCheck">
        <property name="text">
         <string>Compute &amp;edges</string>
        </property>
       </widget>
      </item>
-     <item row="4" column="0">
+     <item row="5" column="0">
       <widget class="QLabel" name="label_3">
        <property name="text">
         <string>&amp;Mode</string>
@@ -121,7 +121,7 @@
        </property>
       </widget>
      </item>
-     <item row="4" column="1">
+     <item row="5" column="1">
       <widget class="QComboBox" name="modeCombo">
        <property name="sizePolicy">
         <sizepolicy hsizetype="Preferred" vsizetype="Fixed">
@@ -169,6 +169,13 @@
        </item>
       </widget>
      </item>
+     <item row="4" column="0" colspan="2">
+      <widget class="QCheckBox" name="algorithmCheck">
+       <property name="text">
+        <string>Use Zevenbergen&amp;&amp;Thorne formula (instead of the Horn's one)</string>
+       </property>
+      </widget>
+     </item>
     </layout>
    </item>
    <item>