+
+ // calculate delta for coordinates
+ double aDX = myLX - theLX;
+ double aDY = myLY - theLY;
+
+ // update the local CS data in internal fields
+ myLX = theLX;
+ myLY = theLY;
+
+ //update all objects in the document
+ HYDROData_Iterator anIterator( this, KIND_UNKNOWN );
+ for( ; anIterator.More(); anIterator.Next() )
+ anIterator.Current()->UpdateLocalCS( aDX, aDY );
+}
+
+void HYDROData_Document::UpdateLCSFields() const
+{
+ if( myLX >= 0 && myLY >= 0 )
+ return;
+
+ double aLX, aLY;
+ GetLocalCS( aLX, aLY );
+ HYDROData_Document* aThat = const_cast<HYDROData_Document*>( this );
+ aThat->myLX = aLX;
+ aThat->myLY = aLY;
+}
+
+void HYDROData_Document::Transform( double& X, double& Y, bool IsToLocalCS ) const
+{
+ UpdateLCSFields();
+ if( IsToLocalCS )
+ {
+ X -= myLX;
+ Y -= myLY;
+ }
+ else
+ {
+ X += myLX;
+ Y += myLY;
+ }
+}
+
+void HYDROData_Document::Transform( gp_Pnt& thePnt, bool IsToLocalCS ) const
+{
+ double X = thePnt.X();
+ double Y = thePnt.Y();
+ double Z = thePnt.Z();
+ Transform( X, Y, IsToLocalCS );
+ thePnt = gp_Pnt( X, Y, Z );
+}
+
+void HYDROData_Document::Transform( gp_XYZ& thePnt, bool IsToLocalCS ) const
+{
+ double X = thePnt.X();
+ double Y = thePnt.Y();
+ double Z = thePnt.Z();
+ Transform( X, Y, IsToLocalCS );
+ thePnt = gp_XYZ( X, Y, Z );
+}
+
+void HYDROData_Document::Transform( gp_XY& thePnt, bool IsToLocalCS ) const
+{
+ double X = thePnt.X();
+ double Y = thePnt.Y();
+ Transform( X, Y, IsToLocalCS );
+ thePnt = gp_XY( X, Y );