[svg-developers] Re: svgs used as tiles in a slippy map?

[Cisco]

Well, my company is keeping the project hidden from the public for now, but 
progress has been good. I've run into some problems, which I've figured out, or 
made work-arounds for. One thing I found out was that the iPhone's javascript 
engine is vrrryyy slww. And so that means I had to avoid using any 
big javascript loops for generating dynamic svg elements, as much as possible. 
What takes about 1 second for a regular desktop computer browser to loop 
through, can take an eternity on the iphone (well, several seconds anyways). 
Pre-digested, easy to swallow, bites of svg code needs to be spoon fed to the 
iphone, through carefully controlled ajax calls.

The map is quite slippy now, and very responsive on the iphone. Now I need to 
add more details to the map, depending on zoom level, and add some mouseup 
interactivity, which will bring up dialog boxes and menus, depending on what 
hex or planet you click on.

--- In svg-developers@yahoogroups.com, David Dailey ddailey@... wrote:

 What a wonderful sounding project! I'm unable to help, but would be
 delighted to know of your progress as it unfolds.
 
  





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[svg-developers] Re: svgs used as tiles in a slippy map?

[jonfrostsvg]

You will want to check out the progress that has been made in this area with 
the Pergola library over at Dotuscomus.com
   http://www.dotuscomus.com/pergola/

Pergola actually harnesses the PolyMaps.org project and allows for layers of 
SVG to be added to the slippery map.  The primary developer, Domenico S., is 
amazing and will be able to wire up most anything you ask for as he has been 
doing a lot of research in this area for the last few months.  As an example, 
the Layers menu option adds an SVG polygon to the map. Pushpins can be added 
as well:

http://www.dotuscomus.com/pergola/download/pergola_1.25/Examples/BingMaps/BingWindow.svg#12.00/37.7649/-122.4195

Referencing 1.5MB of SVG data is more than I have tested, but this should be 
possible.  

   Enjoy, and yes, please keep us posted.
 Jon



--- In svg-developers@yahoogroups.com, David Dailey ddailey@... wrote:

 What a wonderful sounding project! I'm unable to help, but would be
 delighted to know of your progress as it unfolds.
 
  
 
 Cheers
 
 David
 
  
 
 From: svg-developers@yahoogroups.com [mailto:svg-developers@yahoogroups.com]
 On Behalf Of Cisco
 Sent: Friday, May 13, 2011 6:12 PM
 To: svg-developers@yahoogroups.com
 Subject: [svg-developers] svgs used as tiles in a slippy map?
 
  
 
   
 
 Has anyone use a slippy map system, and have it reference your svg files
 (instead of getting geographic data from a tile server)? 
 
 I'm currently struggling with polymaps (polymaps.org), because its
 supposed to work directly with svg. However, I'm having difficulty
 understanding how I'm supposed to reference the svg files. The polymaps
 documentation is very *spartan*, to say the least. 
 
 Other systems, like openstreets, have tutorials that all seem to assume
 you're pulling raster geographic tiles from a big tile server somewhere, and
 that you're required to supply a geographic projection. 
 
 The map I'm trying to display is a 10x11 grid of svgs (each one is about
 1.5 megs in size), representing an imaginary galaxy, each one that can be
 zoomed into greatly, to see individual planets, or zoomed out to see nebula
 clouds. Its flat 2d - no geographic warping involved. Its similar to the one
 at http://www.travellermap.com/
 
 
 
 
 
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