Re: "Polygons" with arcs

From: Donald Dietrick <dietrick@bbn.com>
Date: Mon Sep 10 2001 - 14:52:22 EDT

Hi Ariane,

Your plan sounds fine. You should be able to embed OMGraphics and
OMGraphicLists inside another OMGraphicList, and then just call the
generate and render methods on the top-level list.

For the segment that is showing up, is it an OMLine in an embedded list?

- Don

On Monday, September 10, 2001, at 01:44 PM, Ariane Schaefer wrote:

> I am trying to draw shapes consisting of some given
> number of arc and line segments. Each shape is stored
> on an OMGraphicsList as an OMGraphicsList, which is in
> turn composed of OMLines representing each segment
> (line or arc) in the shape. If the segment is an arc,
> the OMLine has an arc element to it. The idea is that
> when you move the mouse over one such shape, the whole
> shape can light up and you can get information about
> it. Is this a feasible plan? It sounds good to me but
> doesn't work. The shapes are parsed and
> generateGraphics() is called on them. This creates the
> graphics and puts them in the OMGraphicList.
> Generate() gets called and seems to function ok.
> However, when the graphics are actually drawn to the
> screen, via render(), only the first segment gets
> drawn, whether it is a line or an arc. Is there some
> special way to iterate through this kind of list
> setup? Has anyone else tackled a similar problem?
> Thanks in advance for any help!
>
> KittyHawk
>
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Donald F. Dietrick, dietrick@bbn.com
BBN Technologies, 10 Moulton Street, Cambridge, MA 02138
617.873.3031 FAX 2794
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Received on Mon Sep 10 14:53:24 2001

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