Re: Berzier Curves on google map

The srufaculty code creates VML "curve" objects. The VML does all the
heavy lifting, but the only browser that implements VML is MSIE. I don't
believe VML allows you to extract the mathematical function, so you'd
have to redo all VML's work in your own code to get at the underlying
maths.

The jsfiction code contains the algorithms that perform the mathermatics
in Javascript, so it should be possible to hack that code to extract the
maths. It renders unfilled curves by creating a large number of
single-pixel divs that have position:absolute. So it should work in all
browsers and you might be able to extract the maths. The awkward thing
is that the code you need to understand and modify from
http://jsdraw2d.jsfiction.com/jsDraw2D.js is a single line of Javascript
that's 66107 characters long and has no comments and doesn't use
meaningful names for its internal variables and functions.

In both cases, you end up with something that's rendered directly onto
the screen, whereas you'd be better off with something that created
GPolyline objects that you could add to a map and have the API handle
the redrawing of the curve when the zoom level changes.

--
Mike Williams

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