Hi Jody I have completed my first task(creating gates), All credit goes to you.
Any way Thanks again Babu. On Fri, Feb 27, 2009 at 1:51 PM, Jody Garnett <[email protected]>wrote: > You have the right class; but unless you change the code to draw lines you > will not draw lines :-) > I think rather than storing individual coordinate on the blackboard you may > want to store a "gate" on the blackboard. > > Make a class called gate with 4 points in it. And make your tool create > gates; and you map graphic draw them. > > With programming there are always many ways to do things; you should go > with something you are comfortable with. > > Why not start off slow and replace the mapgrpahic code (that draws a circle > right now) and ask it to draw a square (just to get practice drawing > squares. > > Jody > > > On Fri, Feb 27, 2009 at 4:43 PM, prasad babu <[email protected]>wrote: > >> Hi Jody >> >> I have created a MapGraphic, I am able to place the coardinates now (with >> Blue color), But it is not drawing any lines to combine these coardiants to >> create a gate . >> >> What I have done so far >> >> 1-> Make use of net.refrations.tuorial.tool.coardinate class . (I just >> create model tool and added this class to that model , so that I can place >> some coordinates using that tool) >> 2->I just added a MapGraphic and I have given a name(Draw Line) to that >> MapGraphic >> >> Step to execute >> >> 1-> I just added a Map to the Udig >> 2-> I just use the coordiante model tool to place the points >> 3->I just created a Map graphic to that Map >> >> Now I can only see that 4 coardinates with dark blue color on to the Map >> >> Is it the right way to add map graphic? if not plese let me know the >> process,othere wise just send me any doucment related to this. >> >> Thanks in advance >> Babu. >> >> On Thu, Feb 26, 2009 at 12:46 PM, Jody Garnett >> <[email protected]>wrote: >> >>> On Thu, Feb 26, 2009 at 1:17 PM, prasad babu >>> <[email protected]>wrote: >>> >>>> Hi >>>> >>>> I added a plug-in to the tool, and now I need to draw some thing on the >>>> map which conncets 4 coardinates. >>>> >>> >>> So next up you can create a MapGraphic (its responsibility will be to >>> draw the coordinates). Have a look at the code example documented here: >>> - >>> http://udig.refractions.net/confluence/display/DEV/2+Training+Materials#2TrainingMaterials-MapGraphic >>> >>> >>>> and I must restrict the size and way of the polygon or whatever... I >>>> wont allow users to draw what ever they want. I need to do some >>>> calculations >>>> while drawing a extra layer on the map. >>>> >>> >>> That is fine; you can do whatever you need when drawing. >>> >>>> >>>> My actual requirement. >>>> >>>> I need to work on a road map, there will be many roads , and I need to >>>> add some gantrys (means toll gates for price calculations) to the map . I >>>> just want to add a plug -in to do this process. >>>> >>> >>> So what is your workflow? Are the four points representing a "tool gate"? >>> 1. Select the "toll gate" tool; use it to draw a gate >>> 2. During drawing you can use a DrawCommand to provide visual feedback; >>> when the gate is done you can invalidate the draw command and add the new >>> gate to the map blackboard. When the gate is done you can check if there is >>> a "toll gate" mapgraphic on the map and if not you can add it; if it is >>> already there you can refresh it >>> 3. Create a "toll gate" mapgraphic that draws the toll gate on the screen >>> >>> Is this correct? Are you really drawing a box for a toll gate; or do you >>> need to click and snap to the nearest layer? >>> >>> 1-> Which class I need to extend to write an extra layer? (I extended >>>> simple tool for calulate the distance in the example,there are methods like >>>> mouse dragged and so on..) and I also needto do an reverse engine that >>>> means I will get the data from GPS (4 Coardinates) >>>> and I need to connect ther 4 coardinate and display it >>>> automaticaly once I open the Map. >>>> >>>> Plese suggest me what would be the best way to do this. >>>> >>>> Any ideas will be appriciated. >>>> >>>> Thanks in advance >>>> Babu >>>> >>>> >>>> >>>> On Wed, Feb 25, 2009 at 10:51 AM, Jody Garnett >>>> <[email protected]>wrote: >>>> >>>>> That sounds perfect; if you are intending to define a region of >>>>> interest then a region of interest tool is more explicit to both you and >>>>> your user. You should find that your tool can store the region of interest >>>>> on the map backboad; and then your other view etc can pick it up from >>>>> there >>>>> as needed. The coordinate tool / coordinate map graphic example in >>>>> tutorials >>>>> show how to do this; and it has been used by many other teams. The DIVAGIS >>>>> team used this techqniue to define a region of interest "grid" and then >>>>> had >>>>> a bunch of operations build around doing analysis of the points that fell >>>>> into each grid square. >>>>> >>>>> Jody >>>>> >>>>> >>>>> On Tue, Feb 24, 2009 at 7:46 PM, Despres >>>>> <[email protected]>wrote: >>>>> >>>>>> Thanks for your help, >>>>>> >>>>>> >>>>>> >>>>>> The point is that the filter i get doesn’t contain a bounding box. >>>>>> Indeed, I may have only one or no rasters layer on the map. >>>>>> >>>>>> I think what I tried to do is impossible with the Bbox selection tool, >>>>>> so I developped my own Bbox tool. The goal is just to define a Region of >>>>>> Interest. >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> Damien >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> ------------------------------ >>>>>> >>>>>> *De :* [email protected] [mailto: >>>>>> [email protected]] *De la part de* Jody >>>>>> Garnett >>>>>> *Envoyé :* mardi 24 février 2009 06:08 >>>>>> *À :* User-friendly Desktop Internet GIS >>>>>> *Objet :* Re: [udig-devel] BBoxSelection Listener >>>>>> >>>>>> >>>>>> >>>>>> The filter geneated by the BBoxSelectionCommand is available for you >>>>>> .... layer.getFilter(). >>>>>> >>>>>> >>>>>> You can look at this data structure and get the bounding box if you >>>>>> like; altough the selection for a layer (ie the filter) is not always >>>>>> done >>>>>> as a bounding box. >>>>>> >>>>>> I hope this helps. >>>>>> >>>>>> If you need to listen to any random part of the >>>>>> project/map/layer/viewport model you can - the magic word you need to >>>>>> know >>>>>> is "adapters"; the best way to figure out how is to look at some of the >>>>>> existing add/remove listener implementations and watch how they >>>>>> translate a >>>>>> Notification (ie what adapters "listen to") into a layer change event. >>>>>> >>>>>> I am still not sure if the various map changed, and layer changed >>>>>> events are worth while or if it would be easier just to use this >>>>>> Notification thing everywhere. >>>>>> >>>>>> Jody >>>>>> >>>>>> On Wed, Feb 18, 2009 at 4:35 AM, Despres < >>>>>> [email protected]> wrote: >>>>>> >>>>>> Hi all, >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> I’m trying to develop a plug-in that could listen to the >>>>>> BBoxSelectionCommand and get the bbox that have been drawn by the user >>>>>> with >>>>>> the bbox tool. >>>>>> >>>>>> I’ve tried to add a MapListener, I catch an event but it doesn’t help: >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> *activeMap*.addMapListener(*new* IMapListener(){ >>>>>> >>>>>> *public* *void* changed(MapEvent event) >>>>>> >>>>>> { >>>>>> >>>>>> System.*out*.println("change"); >>>>>> >>>>>> *if*(event.getType() == MapEvent.MapEventType.* >>>>>> MAP_COMMAND*){ >>>>>> >>>>>> CommandManager val = >>>>>> (CommandManager)event.getNewValue(); >>>>>> >>>>>> Object *old*=event.getOldValue(); >>>>>> >>>>>> System.*out*.println(val.getMaxHistorySize()); >>>>>> >>>>>> } >>>>>> >>>>>> }}); >>>>>> >>>>>> } >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> Thanks in advance for your help, I’m really lost here. >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> *DESPRES Damien* >>>>>> >>>>>> >>>>>> _______________________________________________ >>>>>> User-friendly Desktop Internet GIS (uDig) >>>>>> http://udig.refractions.net >>>>>> http://lists.refractions.net/mailman/listinfo/udig-devel >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> _______________________________________________ >>>>>> User-friendly Desktop Internet GIS (uDig) >>>>>> http://udig.refractions.net >>>>>> http://lists.refractions.net/mailman/listinfo/udig-devel >>>>>> >>>>>> >>>>> >>>>> _______________________________________________ >>>>> User-friendly Desktop Internet GIS (uDig) >>>>> http://udig.refractions.net >>>>> http://lists.refractions.net/mailman/listinfo/udig-devel >>>>> >>>>> >>>> >>>> _______________________________________________ >>>> User-friendly Desktop Internet GIS (uDig) >>>> http://udig.refractions.net >>>> http://lists.refractions.net/mailman/listinfo/udig-devel >>>> >>>> >>> >>> _______________________________________________ >>> User-friendly Desktop Internet GIS (uDig) >>> http://udig.refractions.net >>> http://lists.refractions.net/mailman/listinfo/udig-devel >>> >>> >> >> _______________________________________________ >> User-friendly Desktop Internet GIS (uDig) >> http://udig.refractions.net >> http://lists.refractions.net/mailman/listinfo/udig-devel >> >> > > _______________________________________________ > User-friendly Desktop Internet GIS (uDig) > http://udig.refractions.net > http://lists.refractions.net/mailman/listinfo/udig-devel > >
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