Re: moving graphics objects on a map

I'll definitely let you know. One thing I thought about was that not all
layers are added to the bean context by default. I'll have to make sure
that they are.

jeff

At 10:48 AM 9/6/2001 -0400, Donald Dietrick wrote:
>Hi Jeff,
>
>With respect to serialization, what you are thinking about doing *should*
>work - I'm not sure what the result would be, because I've never tried
>it. I'd just be wary of some of the classes that have transient
>variables, to make sure that are handled correctly. Let me know how it goes...
>
>Regards,
>
>Don
>
>On Wednesday, September 5, 2001, at 02:43 PM, Jeff Mathis wrote:
>
>>Donald,
>>
>>I'm just getting around to this part of the code again.
>>I didn't make any modifications to EditableOMCircle. I just overrode
>>the getGraphic() method to return my location graphic instead of the
>>default
>>omcircle. As I get further into this, I'll let you know.
>>
>>I have another question converning serialization. I've noticed that most
>>(if not all) of the openmap package is serializable. I would think that
>>I would
>>issue a writeObject() command on the MapHandler, and that would
>>basically serialize all the
>>components and their state. Would you agree? Then when I want to reload,
>>I would somehow replace
>>the current application maphandler with the new (now unserialized)
>>maphandler. Any pitfalls I should be aware of
>>before jumping into this further?
>>
>>jeff
>>
>>Donald Dietrick wrote:
>>>
>>>Hi Jeff,
>>>
>>>On Friday, August 24, 2001, at 07:37 PM, Jeff Mathis wrote:
>>>
>>>>Donald,
>>>>
>>>>I actually have a Location, composed of OMText and an OMGraphic (an
>>>>OMCircle to be exact), that needs to be dragged around the map. I looked
>>>>and did not see an EditableOMLocation class, so I wrote one that
>>>>extended EditableOMCircle. I also added an EditToolLoader specifically
>>>>for my locations, and then used the OMDrawingTool.
>>>>
>>>>Getting both the circle and the text to move was a little challenging. I
>>>>may be doing this wrong, but in my drawingComplete(omgraphic, omaction)
>>>>method, I had to do the following in order for the moved circle and the
>>>>associated text to show up in the new location:
>>>>
>>>>
>>>> /**
>>>> * Specified by the DrawingToolRequestor interface. This method is
>>>>called after
>>>> * the edit has been performed on a given location
>>>> * @param omg the OMGraphic object, which should be a MapEntity
>>>> * @param oma the OMAction
>>>> */
>>>> public void drawingComplete(OMGraphic omg, OMAction oma) {
>>>> Debug.message("entitylocationlayer","EntityLocationLayer: called
>>>>drawingComplete");
>>>> // reset the text label based on the circles coordinates
>>>> // i'm not sure i understand it, but all of these calls are
>>>>necessary
>>>> LatLonPoint l =
>>>>((OMCircle)((MapEntity)omg).getLocationMarker()).getLatLon();
>>>>
>>>>
>>>>((OMCircle)((MapEntity)omg).getLocationMarker()).setVisible(true);
>>>> ((MapEntity)omg).setLocation(l.getLatitude(), l.getLongitude());
>>>> ((MapEntity)omg).generate(map.getProjection());
>>>> ((MapEntity)omg).render(map.getGraphics());
>>>> repaint();
>>>> }
>>>>
>>>>I'm not sure why I had to set the circle to be visible. I think I
>>>>understand why I needed to call both generate and render, and then
>>>>certainly repaint at the end.
>>>>
>>>>Could you comment on 5 method calls after defining the LatLonPoint? This
>>>>may again be much more of a Swing issue than OpenMap
>>>
>>>It's probably not a Swing issue, but more of the timing of actions that
>>>EditableOMGraphics go through to try and manage the MouseEvents. I
>>>think some if these actions usually get called in the EditableOMGraphic
>>>before the drawingComplete() gets called, but there may not be something
>>>happening as expected depending on the modifications you had to make to
>>>EditableOMCircle.
>>>
>>>Do you have to modify the circle, or just the placement of the
>>>location? It might be easier to work with EditableOMPoint when editing
>>>Location objects. That way, in the EditableOMGraphic.setGrabPoints()
>>>and EditableOMGraphic.setGrabPoints(OMGraphic), you can just work with
>>>the methods of the Location object. It's hard for me to say what's
>>>going on since I don't know what your are doing in EditableOMCircle.
>>>
>>>Let me know how confusing the Editable stuff is - what areas need more
>>>documentation, does it make sense, etc?
>>>
>>>Thanks,
>>>
>>>Don
>>>
>>>>
>>>>thanks,
>>>>
>>>>jeff
>>>>
>>>>Donald Dietrick wrote:
>>>>>
>>>>>Hi Jeff,
>>>>>
>>>>>All of the EditableOMGraphics are really meant to be used with the
>>>>>OMDrawingTool, although I suppose you could manage them through the
>>>>>layer. I've never tried it, though.
>>>>>
>>>>>You can use the DrawingTool from a layer, though. See the DemoLayer on
>>>>>how it uses it to create and edit graphics. By default, when the
>>>>>drawing tool is activated, a palette appears that provides other
>>>>>parameters for changing the attributes of the graphics. There is
>>>>>also a
>>>>>way to call it so that a GUI doesn't show up to allow the user to
>>>>>change
>>>>>all the other features of a graphic (other than position and size), if
>>>>>you want those attributes preserved.
>>>>>
>>>>> - Don
>>>>>
>>>>>On Thursday, August 23, 2001, at 11:26 AM, Jeff Mathis wrote:
>>>>>
>>>>>>hello again,
>>>>>>
>>>>>>I have a layer which has a locationhandler. the locationhandler
>>>>>>currently deals with a series of OMCircles to mark my locations of
>>>>>>interest. I now need to be able to click on one of these locations and
>>>>>>drag it to a new part of the map.
>>>>>>
>>>>>>I see there is an EditableOMCircle class, which I'm hoping has some of
>>>>>>the functionality I need. Is this correct? If so, any hints on the
>>>>>>best
>>>>>>way to use it?
>>>>>>
>>>>>>If this is a class I want to use, I know I'll have to change my
>>>>>>locationhandler to deal with an EditableOMGraphic instead of an
>>>>>>OMGraphic.
>>>>>>
>>>>>>thanks
>>>>>>
>>>>>>jeff
>>>>>>--
>>>>>>Jeffrey Mathis, PhD FAX: 505-988-2229
>>>>>>Senior Scientist email: jeff.mathis@biosgroup.com
>>>>>>Bios Group, Inc. phone 505-992-6737
>>>>>>317 Paseo de Peralta http://www.biosgroup.com
>>>>>>Santa Fe, NM 87501
>>>>>>
>>>>>>--
>>>>>>[To unsubscribe to this list send an email to "majdart@bbn.com"
>>>>>>with the following text in the BODY of the message "unsubscribe
>>>>>>openmap-users"]
>=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
>Donald F. Dietrick, dietrick@bbn.com
>BBN Technologies, 10 Moulton Street, Cambridge, MA 02138
>617.873.3031 FAX 2794
>=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
>>>>
>>>>--
>>>>Jeffrey Mathis, PhD FAX: 505-988-2229
>>>>Senior Scientist email: jeff.mathis@biosgroup.com
>>>>Bios Group, Inc. phone 505-992-6737
>>>>317 Paseo de Peralta http://www.biosgroup.com
>>>>Santa Fe, NM 87501
>>
>>--
>>Jeffrey Mathis, PhD FAX: 505-988-2229
>>Senior Scientist email: jeff.mathis@biosgroup.com
>>Bios Group, Inc. phone 505-992-6737
>>317 Paseo de Peralta http://www.biosgroup.com
>>Santa Fe, NM 87501

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