Andrew Sinning wrote:
In AS2 and CS3, is it possible to make changes to an existing curve at
runtime? As far as I know, there isn't even a way to access the various
primitives within an mc, so I don't think this is doable. At the very
least I'd like to be able to change the fill of an existing. Even
better I'd like to be able to do is get data about what is in a clip and
then reproduce it or modify it.
Not if it's pre-drawn and loaded in from the library. You might be able
to simulate changing the hue and alpha of the stroke or fill a vector
shape at run-time if you split the the stroke and fill into separate
movieclips and then applied filters to them.
If you need more programmatic control of your vector shapes, however,
you'll need to maintain some sort of representation of the shape in
Actionscript and draw it at run-time using the Graphics API, redrawing
the object as necessary to account for dynamic changes.
For AS2, Helen Triolo has done some interesting work in parsing SVG path
data and rendering it via the Graphics API. You can read more about
this and download example code from her website here:
http://www.flash-creations.com/notes/sample_svgtoflash.php
If you're using AS3, Degrafa would be an excellent choice here, as this
is the exact type of need that the library was meant to fill. Degrafa
is particularly nice in that you can define your shape in very readable
MXML and then programmatically make changes to the shape via script
without having to worry about invalidation and redrawing. You can find
out more about Degrafa here:
http://www.degrafa.com/
Jim Cheng
EffectiveUI
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