yes, there is the method ".getPointAtLength(distance)" at the interface
"SVGPathElement", see also IDL of the SVG 1.1 spec. This is implemented
in all important SVG viewers incl. Batik. See spec:
http://www.w3.org/TR/SVG11/paths.html#DOMInterfaces - there is also the
method .getTotalLength() which returns the path length which you can use
in .getPointAtLength()
However, if you just want to move an element along the path, consider
using SMIL: http://www.w3.org/TR/SVG11/animate.html#AnimateMotionElement
- this is implemented in the SVN version of Batik only, not in the
latest stable release. However, a new stable release will probably
happen soon.
Hope this helps,
Andreas
Hauke Fuhrmann wrote:
Hello there,
is there any possibility to get a list of interpolation points of an
arbitrary SVG Path element?
My task is to move some element along an SVG Path element and therefore
I want to redraw it again and again at the corresponding positions of
the path. Therefore I need the x and y coordinates of the path according
to some input parameter, which could be the percentage of the path
length. E.g. something like
Point getCoords(float percentage);
All methods or classes I found return only --for example-- an array of
the _commands_ rather than actual positions, e.g. the PathArrayProducer.
I hope I can avoid to write my own PathHandler, that interpretes the
path commands.
Best regards,
Hauke
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Andreas Neumann
Institute of Cartography
ETH Zurich
Wolfgang-Paulistrasse 15
CH-8093 Zurich, Switzerland
Phone: ++41-44-633 3031, Fax: ++41-44-633 1153
e-mail: [EMAIL PROTECTED]
www: http://www.carto.net/neumann/
SVG.Open: http://www.svgopen.org/
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