SWIG mapscript request/bug?

[Ryan, Adam]

Alright folks,

Thanks to Sean I've figured out how to reorder the layers of a map.  Now it
turns out that the reordering is only recognized when doing a mapObj.draw()
and NOT when doing a drawQuery().  What's up with that?

Oh what to do?!?

Cheers, Adam

> -----Original Message-----
> From: Ryan, Adam [mailto:ARyan at CO.LINN.OR.US]
> Sent: Tuesday, January 25, 2005 3:05 PM
> To: MAPSERVER-USERS at LISTS.UMN.EDU
> Subject: Re: [UMN_MAPSERVER-USERS] SWIG mapscript request/bug?
>
>
> > -----Original Message-----
> > From: Sean Gillies [mailto:sgillies at frii.com]
> > Sent: Tuesday, January 25, 2005 2:48 PM
> > To: Ryan, Adam
> > Cc: MAPSERVER-USERS at LISTS.UMN.EDU
> > Subject: Re: SWIG mapscript request/bug?
> >
> >
> > On Jan 25, 2005, at 3:28 PM, Ryan, Adam wrote:
> >
> > > Hi.  I'd like to make a request.  In using python
> mapscript I find
> > > that a layer's index property is unchanged after using
> > map.moveLayerUp/Down.
> > > Shouldn't the index values of the two layers that are swapped be
> > > swapped themselves?
> > >
> > > Is this a bug that I should report?
> > >
> > > Cheers,
> > >
> > > Adam
> >
> > Adam,
> >
> > A MapServer mapObj has an array of layerObjs and also an array of
> > indexes of these layerObjs in drawing order.  It is this
> second array
> > that is modified by moveLayerUp/Down.  Same situation for the other
> > mapscripts including PHP.  It's not a bug, just the way
> that MapServer
> > is designed.
> >
> > cheers,
> > Sean
> >
> > --
> > Sean Gillies
> > sgillies at frii dot com
> > http://users.frii.com/sgillies
> >
>
> Hey Sean, thanks for the reply.
>
> Maybe you can lend a suggestion.  I want to manipulate the
> draw order using a list of layer names from the client.  I'd
> like to do this: ... curI = 0 for layerName in layerList:
>     layerO = mapO.getLayerByName(layerName)
>     while layerO.index > curI: mapO.moveLayerUp( layerO.index )
>     curI += 1
> ...
> The problem, if I understand it, is that the layer index is
> indeed being moved up in the drawing order, but the index
> values don't change.  Thus, my while statement runs forever.
>
> I see there are get/setLayersDrawingOrder methods but how
> much work is it to set them up?
>
> Thanks again,
>
> Adam
>