Good afternoon, I have been working on my proposal, but some doubts arose:
1. As I understand, Ben Moores' pdf renderer implements all the functions for processing each kind of symbolizer, following the model of agg_renderer and cairo_renderer. agg_renderer and cairo_renderer are currently designed to produce output as raster images for displaying in the screen. The difference between these and pdf_renderer is the target output. So this makes me think that all the adornment elements, such as the grids and the scales, might be part of a last processing before rendering (as they might me placed in the upper layers). However, I know that these elements must be implemented in each renderer, since a different API is used. So if I understand correctly, the adornments are not elements that are only needed in printed maps, but also in the maps displayed on the screen. Am I correct so far? 2. Robert Coup mentions that the idea is to add these elements to the cairo_renderer. So both the adornments and the variable-resolution/units ideas are for improving the cairo_renderer. Is this correct? I think I should find a way to define these ideas more abstractly in the code, so the cairo, agg and svg renderers benefit from this addition, not only the cairo-based one. Maybe define a set of classes that could be shared between renderers, leaving the specifics of how to display them to the renderers. 3. I still think that the svg_renderer would be worth implementing this summer, though I would like to know your opinion on which ideas have a higher priority. Thank you, I hope I can send a draft of my proposal tonight. Carlos Enrique López Garcés 2010/4/1 Dane Springmeyer <[email protected]> > I encourage everyone following this thread to respond to carlos's summary > ideas. The applications are due soon and the more feedback he has the more > likely the project with be accepted and in a form that is both exciting and > feasible for the summer. > > On Saturday is whercamp and I hope to have a session with Mike Migurski and > Tom Carden to discuss mentorship and progress so far. At this point I feel > very impressed with carlos's awesome research and the fantastic community > brainstorming. > > Thanks! > > Dane > > > --- \o/ --- > Sent from my phone > > On Apr 1, 2010, at 1:43 PM, Carlos Enrique López Garcés < > [email protected]> wrote: > > >> Good afternoon, how are you? >> >> I was talking yesterday with Mr. Springmeyer about the scope of this >> project to determine the main goals and tasks. From the ideas discussed in >> this thread, I identify three major groups: Improvements in resolution, the >> implementation of a renderer based on SVG, and the addition of 'adornments' >> or informative elements (grids, scale bars, etc.) >> >> Each group has its own level of difficulty. However, I see more complexity >> in the implementation of the SVG renderer. I think it represents a major >> design task that deserves attention from a more experienced developer. As >> I'm new to the project, I think I would do better if I worked in the other >> two groups of ideas, which seem to have very clear and defined boundaries. >> This would help me become more familiar with the design and structure of >> Mapnik and would allow me to contribute in a better way in the future. >> >> However, I think you'll have a better perspective of the problem, so I'd >> love to hear your opinions. >> >> Thanks >> >> Carlos Enrique López Garcés >> _______________________________________________ >> Mapnik-devel mailing list >> [email protected] >> https://lists.berlios.de/mailman/listinfo/mapnik-devel >> >
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