[ka-Map-users] dynamic route display

Pg pg.navone at gmail.com
Wed Jan 25 16:56:33 EST 2006

I've on-line a new test version of kaXmlOverlay.js, the tool to
display dynamic objects on ka-Map with an XML document.

I changed the implementation of the rendering of geographic features,
linestrings and polygons. The new version uses a server side script to
generate a PNG/GIF image.
The new implementation seems solving most of the performance issues.
I tested it on Firefox, IE and Opera: Lorenzo, could you try t on Safari?

The number of vertices of any feature is limited; the limitation is
due to the need of sending the points on an URL (in the example there
is a linestring with 160 points).

I decided don't clip images, so if you zoom in the images can become
very big. This can be a problem, but in this way is sufficient to
redraw images only on scale changes: with clipping the images must be
redrawn also on pan.

You ca find the example in


the JavaScript component kaXmlOverlay.js in


and the PHP script that generates bitmaps can be downloaded in



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