Hi geoff,
I want to contribute with a couple of observations:
>
> Line Patterns
> =========
>
> As far as I can tell, the Change Styles
> dialog/rendering tab allows line
> patterns to be user defined. If you enter the line
> pattern (standard
> Graphics2D format) then the built-n line pattern can
> be replaced (and
> saved in the Project file). Complex line patterns
> like 10,5,3,2 can be
> defined where the numbers refer to the lengths of
> solid line then gap
> sizes in a repeated sequence.
In the Change style>decoration dialog there are some
decoration which look like complex lines
(Segment-Mid-Arrow-Open, Segment-Mid-Arrow-Open, for
instance, etc): lines with a simbol which follow the
segments.
It could be a way to explore (to have complex lines)
> Vertex Styles
> =========
> To add a set of optional vertex styles into the
> Change Styles dialog
> would require a change to the OJ core.
I think Andreas Schmitz added to OJ some deeJump
features in change style dialog which allow to
customize the type of vertex symbol (square, circle,
etc. I wander if this could be added also to the
Change Style>colour theming>custom dialog. So people
can define their symbology according to
attribute/range value
> Rotating Fill Patterns
> ==============
> There are three two types of fill patters used in
> the OJ core
> (ImageFillPattern and WKTFillPattern), when I
> created my FillPattern
> plug in I added a third (MyImageFillPattern). To
> rotate patterns
> (comprehensively) changes to the OJ core would be
> required, perhaps to
> the BasicFillPattern class that the above classes
> inherent from.
Rotating fill according to attribute/angle value will
give to OJ vast capability of rendering. As sample
(Cicero pro domo sua...) in geological maps the fill
of landslide is the same but rotated according to the
avarage of the landslide average movement direction.
Thanks
Peppe
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