Hello Mike
about estract the math function take a look to example 3 at

http://13thparallel.com/archive/bezier-curves/

but is just for 2 control points and 2 vector points

PIF

my site : http://sciuto.yolasite.com - at download area some mashup
are
available


On 25 Gen, 13:25, Mike Williams <[email protected]> wrote:
> 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 
> fromhttp://jsdraw2d.jsfiction.com/jsDraw2D.jsis 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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