Hi Ruben,
If you need your shape to be editable, I'd create a new class that
extends OMPoly, and override the generate() method so that instead of
calling the projection libraries to generate a straight polygon, it
uses the coordinates and any other information to create the
OMAreaList you are creating now, and then set the Shape object from
the OMAreaList into the Shape object of your OMPoly superclass.
You'll probably have to override the distance(x, y) method too, so it
forwards that call to the internal OMAreaList.
Then, the EditableOMPoly should be able to modify your OMAreaList.
- Don
On May 14, 2009, at 5:57 AM, Ruben DF wrote:
> Thanks again for answering,
>
> I need an OMPoly object which can be formed by lines straight and
> lines curves. Since I cannot get the OMLines from a OMPoly given (or
> OMAbstractLines) in order to modify some of them by curve lines, I
> was thinking about joining the OMLines and OMArc (Thanks Don, I
> didn't know that class) in an unique shape; OMAreaList give to me
> the solution (Thanks Don again ;)), however, I've seen that there's
> no an EditableOMAreaList either an EditableOMArc, so i cannot select
> that shapes in order to moving, modify the shape..etc, any idea?
>
> I was also trying with arcCalc, but i think i need a geocentric arc
> so I will use OMArc class.
>
> Ben, I dont know if this could slow down the performance, but I need
> to try it at least! :)
>
> --- El mié, 13/5/09, Don Dietrick <dietrick_at_bbn.com> escribió:
>
> De: Don Dietrick <dietrick_at_bbn.com>
> Asunto: Re: [OpenMap Users] polygon with curved lines
> Para: "Ruben DF" <rdocasalf_at_yahoo.es>
> CC: "openmap-users Users" <openmap-users_at_bbn.com>, "Ben Weisburd" <benw_at_ll.mit.edu
> >
> Fecha: miércoles, 13 mayo, 2009 5:51
>
> Hi Ruben,
>
> Ben has the right idea, but it also depends on if you want all the
> parts to be rendered the same. You can use an OMAreaList to join
> different OMGraphics together into one shape.
>
> Do the lines between the points have geocentric meaning, or are you
> just trying to create a certain visual effect? OMLines can have an
> ArcCalc object set on it to create a arc in pixel space between two
> points. It has no geocentric meaning. Might be easier to use than
> defining an OMArc's parameters to meet up at certain endpoints, but
> defining the OMArc will give you an edge that means something - a
> path that is a certain distance away from a lat/lon point.
>
> - Don
>
> On May 13, 2009, at 11:21 AM, Weisburd, Ben wrote:
>
> > Ruben,
> >
> > Creating multiple OMLines and OMCircles, and putting them in an
> OMGraphicList?
> > This might be slow if you have a large amount of shapes though.
> >
> > -Ben
> >
> >
> > From: owner-openmap-users_at_bbn.com [mailto:owner-openmap-users_at_bbn.com
> ] On Behalf Of Ruben DF
> > Sent: Wednesday, May 13, 2009 11:01 AM
> > To: Don Dietrick
> > Cc: openmap-users_at_bbn.com
> > Subject: Re: [OpenMap Users] polygon with curved lines
> >
> > Thanks for answering,
> >
> > I was seeing OMSpline, however, i need that my object (let's call
> circuit, for example) has lines which are totally straight and lines
> curved. I think OMSpline is formed by curved lines always. Perhaps,
> OMSpline may be implemented in order to draw straight lines between
> a pair of points?
> >
> > My hipotetic object would be formed by n points, ok? among those
> points it could have a OMLine or an OMCircle (the arc which pass
> between those points, giving a specific radius)
> >
> > hope this helps to its understanding, thanks again in advance :)
> >
> > --- El mié, 13/5/09, Don Dietrick <dietrick_at_bbn.com> escribió:
> >
> > De: Don Dietrick <dietrick_at_bbn.com>
> > Asunto: Re: [OpenMap Users] polygon with curved lines
> > Para: "Ruben DF" <rdocasalf_at_yahoo.es>
> > CC: openmap-users_at_bbn.com
> > Fecha: miércoles, 13 mayo, 2009 3:21
> >
> > Hi Ruben,
> >
> > I think you are looking for the OMSpline class in OpenMap.
> >
> > Hope this helps,
> >
> > Don
> >
> > On May 13, 2009, at 6:17 AM, Ruben DF wrote:
> >
> > > Hi,
> > >
> > > I'm interested in drawing polygons with its lines curved. I know
> that in theory it is not possible since a polygon is based on lines
> straight but i need to be able to draw lines curved and straight.
> I've been reviewing OMPoly class, and i think i should modify this
> class to convert the straight lines in curved lines (the curved
> lines would be formed by OMCircle class, wouldn't be?)
> > >
> > > I'm lost...anyone can help me?
> > > Thanks in advance
> > >
> >
> >
>
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Received on Thu May 14 2009 - 07:42:49 EDT