Hi Amy,
This is a typical use case for glyphs and textPath. In SVG you can
define you own glyphs (with your own geometry) and then use the textPath
element to align these glyphs along the path element.
You can use scripting and the DOM (SVGPathElement.getTotalLength) to
detect the path length and then calculate how many glyphs you need. I
succesfully use this methods for geomorphologic and geologic maps. This
is also a typical procedure in desktop mapping.
Opera 9.1 also has the method="stretch" attribute implemented, which can
warp the individual glyphs along the path. However, as far as I know,
Opera 9 is the only SVG viewer that has this feature implemented. But
already without this method, the textPath feature is very useful.
Here is one textPath example with a self-defined glyph. Its from
Winter/Überschärs book (german) on SVG mapping:
http://www.carto.net/neumann/temp/self_defined_glyphs_on_path.svg
Andreas
Amy Comstock wrote:
All,
I have a set of third party svg's. They all draw a symbol or are an
example of a fill pattern.
The svg's are set up like this:
<svg xmlns="http://www.w3.org/2000/svg"; xml:space="preserve"
width="xxmm" height="xxmm" style="shape-rendering:geometricPrecision;
text-rendering:geometricPrecision; image-rendering:optimizeQuality;
fill-rule:evenodd; clip-rule:evenodd"
viewBox="0 0 xx yy">
<defs>
cdata section
</defs>
<g id="xx">
<g id="yy">
<line/path/polyline/etc id="zz" class="abc" coordinate
list>
</g>
there may be multiple subgroups, all with separate id's
</g>
</svg>
What I need to do is outline a line/polyline/polygon/path using these
svg's.
I tried creating a pattern using the third party svg and then setting
the pattern as the stroke. The problem is, that doesn't orient the svg
correctly.
This is what the svg I'm using looks like:
Emacs!
When using that svg as the stroke pattern, I end up with this:
Emacs!
What I really want is this, to draw the edges using the pattern:
Emacs!
Any ideas on how to do this? Is it even possible?
I'm using apache batik to do the drawing in a jsvgcanvas.
--
----------------------------------------------
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/
Carto.net: http://www.carto.net/
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