[mapguide-users] Dinamic Tile Render

[Riccardo Pucci]

Ok, I'm not talking about "tiling" as a cache system, I know that in 
webgis this is the common meaning of the word, so I will not use it 
anymore :)

I have a customer that asked me to implement a service that generate in 
background (during night) pdf file for later print. To do that I have 
encapsulated the image I retrieve via GETDYNAMICMAPOVERLAYIMAGE in pdf 
file. To obtain a decent result i have increased SETDISPLAYDPI parameter 
to 300 and adjusted SETDISPLAYWIDTH,SETDISPLAYHEIGHT and SETVIEWSCALE to 
produce the image I need. This work well till A3 print format. Then my 
customer ask me to generate A0 pdf file with the same quality. I 
explained him that it is not possible, since the image to retrieve it 
simply to big for MapGuide to generate. He pointed me out that A0 are 
just 8 A3 paper side by side, so what I'd should do is to make 8 
independent request to GETDYNAMICMAPOVERLAYIMAGE and then make a collage 
inside PDF...
The problem is that each request produce an image that is optimized for 
the specific view, so the combined image does not looks well at the 
border of two adjacent "tile". A label for a polygonal feature, for 
example, could be render in both "tile" if the polygon is splitted a 
half in and a half in another tile.

I know that this is how MapGuide work and there is nothing to do. I just 
wonder if in the future, could be technically possible to have a 
rendering option to tell MapGuide to stylize feature without 
optimization at the border of the view. I'm interested to this not much 
for printing purpose, but to develop mobile application.

I'm sorry for my poor english :)

Riccardo

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/mapguide-users/attachments/20130415/7d020d14/attachment.html>