[OpenLayers-Users] How to draw a arrow with openlayer?

Thu Aug 1 07:37:28 PDT 2013

Beautiful!

On Thu, Aug 1, 2013 at 10:34 AM, Pierre Giraud <pierre.giraud at camptocamp.com
> wrote:

> Hi all,
>
> I was looking for such a feature (ie. drawing arrows along line to
> show direction) and looked at the several examples proposed.
> I chose a different approach though. I tried to be less intrusive and
> do the job in the renderer instead of adding layers or features. My
> main goal was to avoid having features polutting an editing layer.
>
> Extending the renderers to display new elements seemed easy.
>
> Here's the result: http://bl.ocks.org/pgiraud/6131715
>
> I didn't think about any side effects but would be happy to hear cases
> where it could fail.
>
> What do you think?
>
> Pierre
>
> On Tue, Jan 29, 2013 at 2:14 PM, Alexandre Dubé <adube at mapgears.com>
> wrote:
> > Hi Hua Jie,
> >
> >   What you did is really nice!  You could contribute this by making an
> > example out of it :
> >
> >   * fork openlayers 'master' branch and clone
> >   * create new .html and .js in the 'examples' directory to create an
> > example out of it, using the same files the other examples do.
> >   * add/commit/push/pull request
> >
> >   Even though the class you created wouldn't be part of the actual core,
> it
> > would still demonstrate how to assemble OpenLayers core components to
> > achieve this.
> >
> > Regards,
> >
> > Alexandre
> >
> >
> >
> > On 13-01-28 10:46 PM, 杨华杰 wrote:
> >
> > Hi All
> >
> > Thanks for all the help.
> >
> > I draft a version first. Not sure how to contribute to the lib.
> >
> > Here is some screenshot.
> > http://www.javalinux.me/?p=681
> >
> >
> > Here is the demo page:
> > http://www.javalinux.me/openlayer/arrow/
> >
> >
> > Regards,
> > Hua Jie
> >
> >
> > On Fri, Jan 25, 2013 at 6:25 PM, Arnd Wippermann <arnd.wippermann at web.de
> >
> > wrote:
> >>
> >> Hi,
> >>
> >> may be this examples can help:
> >>
> >> approach like Imran described
> >>
> >>
> http://gis.ibbeck.de/ginfo/apps/OLExamples/OL210/Line_Direction/direction_arrow.asp
> >>
> >>
> >>
> http://gis.ibbeck.de/ginfo/apps/OLExamples/OL212/Direction_Vectors/rotation_of_simple_direction_vectors.asp
> >>
> >>
> >> Arnd
> >>
> >> ________________________________
> >> Von: openlayers-users-bounces at lists.osgeo.org
> >> [mailto:openlayers-users-bounces at lists.osgeo.org] Im Auftrag von ???
> >> Gesendet: Freitag, 25. Januar 2013 05:06
> >> An: Imran Rajjad
> >> Cc: openlayers-users at lists.osgeo.org
> >> Betreff: Re: [OpenLayers-Users] How to draw a arrow with openlayer?
> >>
> >> Hi Guys
> >>
> >> I got some process.
> >>
> >> But I have a problem to draw with the mouse, during the drawing, I can
> see
> >> the angle. But when I double click, the angle gone. Any tips will help.
> >>
> >>
> >> Regards,
> >> Hua Jie
> >>
> >>
> >> On Thu, Jan 24, 2013 at 10:01 AM, 杨华杰 <yhjhoo at gmail.com> wrote:
> >>>
> >>> Hi Imran
> >>>
> >>> Thanks for your reply. I believe a lot people have the same questions.
> >>> Why this feature is not released.
> >>>
> >>>
> >>> Regards,
> >>> Hua Jie
> >>>
> >>>
> >>> On Wed, Jan 23, 2013 at 10:28 PM, Imran Rajjad <rajjad at gmail.com>
> wrote:
> >>>>
> >>>> Hi,
> >>>>
> >>>> you can make a feature whose geometry is a GeometryCollection, this
> >>>> collection can contain a line and a point grouped into one geometry
> then you
> >>>> can use the below mentioned style to draw an arrow with your line
> >>>>
> >>>>
> >>>> {
> >>>> strokeColor: "#00688B",
> >>>>     fillColor: "#00688B",
> >>>>     fillOpacity : 1.0,
> >>>>     strokeWidth: 2,
> >>>>     strokeOpacity : 0.9,
> >>>>     pointRadius: 6,
> >>>>     graphicName :"triangle",
> >>>>     rotation :angle
> >>>> }
> >>>>
> >>>> remember to compute the angle before setting this .. you should be
> able
> >>>> to calculate angle between start and end point of your line segment..
> and
> >>>> also the position of point geometry which will be drawn as triage
> with given
> >>>> rotation angle..
> >>>>
> >>>> Hope I got my point through..
> >>>>
> >>>> regards,
> >>>> Imran
> >>>>
> >>>> On Wed, Jan 23, 2013 at 7:11 PM, 杨华杰 <yhjhoo at gmail.com> wrote:
> >>>>>
> >>>>> Hi Alexandre
> >>>>>
> >>>>> Thank you, I will try this.
> >>>>>
> >>>>>
> >>>>> Regards,
> >>>>> Hua Jie
> >>>>>
> >>>>>
> >>>>> On Wed, Jan 23, 2013 at 10:01 PM, Alexandre Dubé <adube at mapgears.com
> >
> >>>>> wrote:
> >>>>>>
> >>>>>> Hi Hua Jie,
> >>>>>>
> >>>>>> You could try to define your own arrow symbol.  There's one defined
> >>>>>> [here], see line 1 :
> >>>>>>   OpenLayers.Renderer.symbol.arrow = [0,2, 1,0, 2,2, 1,0, 0,2]
> >>>>>>
> >>>>>>    I haven't tried it, but it could do the trick.
> >>>>>>
> >>>>>> HTH,
> >>>>>>
> >>>>>> Alexandre
> >>>>>>
> >>>>>> [here]
> >>>>>>
> http://code.google.com/p/rep-olnet/source/browse/trunk/Direction.js?r=61
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>> On 13-01-23 07:09 AM, 杨华杰 wrote:
> >>>>>>
> >>>>>> Hi
> >>>>>>
> >>>>>> As the title
> >>>>>>
> >>>>>> I know how to draw a line, dot, polygon. But my customer need some
> >>>>>> directions on the map
> >>>>>>
> >>>>>>
> >>>>>> Regards,
> >>>>>> Hua Jie
> >>>>>>
> >>>>>>
> >>>>>> _______________________________________________
> >>>>>> Users mailing list
> >>>>>> Users at lists.osgeo.org
> >>>>>> http://lists.osgeo.org/mailman/listinfo/openlayers-users
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>> --
> >>>>>> Alexandre Dubé
> >>>>>> Mapgears
> >>>>>> www.mapgears.com
> >>>>>>
> >>>>>>
> >>>>>> _______________________________________________
> >>>>>> Users mailing list
> >>>>>> Users at lists.osgeo.org
> >>>>>> http://lists.osgeo.org/mailman/listinfo/openlayers-users
> >>>>>>
> >>>>>
> >>>>>
> >>>>> _______________________________________________
> >>>>> Users mailing list
> >>>>> Users at lists.osgeo.org
> >>>>> http://lists.osgeo.org/mailman/listinfo/openlayers-users
> >>>>>
> >>>>
> >>>>
> >>>>
> >>>> --
> >>>> I.R
> >>>
> >>>
> >>
> >
> >
> >
> > _______________________________________________
> > Users mailing list
> > Users at lists.osgeo.org
> > http://lists.osgeo.org/mailman/listinfo/openlayers-users
> >
> >
> >
> > --
> > Alexandre Dubé
> > Mapgears
> > www.mapgears.com
> >
> >
> > _______________________________________________
> > Users mailing list
> > Users at lists.osgeo.org
> > http://lists.osgeo.org/mailman/listinfo/openlayers-users
> >
>
>
>
> --
> Pierre GIRAUD
> Géomaticien, Analyste
>
> Camptocamp France SAS
> Savoie Technolac, BP 352
> 73377 Le Bourget du Lac, Cedex
>
> Tel : 00 33 4 79 44 44 93
> Mail : pierre.giraud at camptocamp.com
> http://www.camptocamp.com
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