+ setIsToUpdate( false );
+}
+
+//=======================================================================
+// name : setZRange
+// Purpose : Compute the presentation
+//=======================================================================
+void HYDROGUI_VTKPrs::setZRange( double theRange[] )
+{
+ myZRange[0] = theRange[0];
+ myZRange[1] = theRange[1];
+ vtkMapper* aMapper = mapper();
+ if ( aMapper )
+ {
+ mapper()->SetScalarRange( myZRange );
+ }