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-   -   App for vector renderer maps, using OpenGL ES 2.0 (https://talk.maemo.org/showthread.php?t=93358)

gianko 2014-06-19 11:14

App for vector renderer maps, using OpenGL ES 2.0
 
Is it possible to port on Maemo5, Harmattan, and/or SailfishOS the Mapbox GL project?

it's a on-device vector renderer, which uses OpenGL ES 2.0 technology for pixel-perfect map design, from antialiased fonts to polygon blurring, all hardware-accelerated and optimized for mobile devices and all on the fly.

In the github page it says: An OpenGL renderer for Mapbox vector tiles, implemented in C++11, currently targeting iOS, OS X, and Ubuntu Linux.

Can compile for our platforms?

taixzo 2014-06-19 12:40

Re: App for vector renderer maps, using OpenGL ES 2.0
 
I've already started trying to compile Mapbox for harmattan. So far my issue has been that it requires gcc 4.8, but the version in the Harmattan repos is 4.4. Has anyone been successful in installing a newer gcc/g++?

MartinK 2014-06-19 21:02

Re: App for vector renderer maps, using OpenGL ES 2.0
 
Thanks for letting us know, it looks indeed VERY interesting! :) While it works, I would say it is in quite an early stage of development, but is definitely moving in the right direction. Something like this was long overdo so it is good to see someone finally doing this.

A couple of my initial observations:

  • based on the videos and the demo on the website the performance looks very good !
  • it looks like it uses vector tiles and does some caching of them locally
  • it seems to do only basic map operations (rendering, zooming, map rotation) but does them in a pretty robust way
  • there seem to be support for styles
  • haven't seen any more advanced functionality like POI, route display, overlay with tile data, etc.
  • doesn't seem to be documented in any measurable way aside from basic build instructions
  • and even the build instructions seem to be pretty ad-hoc, not to say fragile - they are Ubuntu-centric and expect to have one specific version (4.8) of gcc, otherwise you are out of luck :) (I have gcc 4.9 on Fedora 20 and haven't yet found a way how to force it to use it)
  • the build system also looks pretty fragile - it is basically downloading & compiling some custom version of Mapnik and other libraries
  • haven't seen anything resembling packaging anywhere so far :)
  • so all in all while it is already remarkable what it can do quite a lot of work is needed to make it more robust and usable in real environment

The main question is - how do you actually use this to make a proper navigation app ? Currently it is basically just a demo that sets up a window and an OpenGL context that shows a map in it. It is open source so you could just take it and build your own application on top of it. But this would be rather tedious, as without using a proper GUI toolkit you would have to implement all the needed GUI primitives yourself, meaning that implementing any non trivial functionality would be quite a lot of work.

So basically what this needs to be actually useful is some sort of GUI toolkit integration. In this regard either Qt (as a QtQuick element or/and a QWidget) or SDL look like the best candidates. Once you have the integration, you can start building real apps with a really nice vector maps. :)

This is related to the question of how modRana can make use of the Mapbox map rendering widget.

ModRana currently has two main GUIs - the GTK2 GUI used mainly on the N900, the Qt 5 GUI used mainly on the Jolla + the semi inactive Qt 4 GUI used on Harmattan. If someone makes a QtQuick 2 element based on the Mapbox renderer (which I would say is quite likely to happen), modRana should be able to use it to render the map layer with relatively minor changes.

And if someone is crazy enough to both build it for Fremantle & to somehow integrate it with GTK2 (both are in my opinion unfortunately quite hard & unlikely to be done), it might even work with the GTK GUI with some modifications. :)

MartinK 2015-06-08 20:33

Re: App for vector renderer maps, using OpenGL ES 2.0
 
Quote:

Originally Posted by otsaloma (Post 1472991)

Cool! Looks like it that it took them only 8 months to implement my suggestion! :)

But anyway:

Who will be the first to get it running on Sailfish OS and Fremantle ? ;-)

willwf 2016-05-05 08:08

Re: App for vector renderer maps, using OpenGL ES 2.0
 
Thank you verry much
sbobet news

pichlo 2016-05-05 08:27

Re: App for vector renderer maps, using OpenGL ES 2.0
 
Quote:

Originally Posted by MartinK (Post 1473023)
Who will be the first to get it running on Sailfish OS and Fremantle ? ;-)

By the looks of it, no one yet :)

m4r0v3r 2016-05-05 08:58

Re: App for vector renderer maps, using OpenGL ES 2.0
 
Does fremantle have gcc 4.8?

freemangordon 2016-05-05 13:11

Re: App for vector renderer maps, using OpenGL ES 2.0
 
Quote:

Originally Posted by m4r0v3r (Post 1505055)
Does fremantle have gcc 4.8?

AFAIK no, 4.7.2 is the latest available

szopin 2016-05-05 15:01

Re: App for vector renderer maps, using OpenGL ES 2.0
 
On device yeah:
https://talk.maemo.org/showthread.php?t=90542
even 5.3.0:
http://talk.maemo.org/archive/index.php/t-96420.html

MartinK 2016-05-10 18:54

Re: App for vector renderer maps, using OpenGL ES 2.0
 
Quote:

Originally Posted by otsaloma (Post 1505337)
Qt Framework officially supported

"We are committed to Qt and Mapbox GL Native now welcomes it as a first-class platform. Mapbox Qt SDK provides QMapboxGL and QQuickMapboxGL."

https://www.mapbox.com/blog/qt-framework-support/

https://imgur.com/sq3ZVb5.gif

Well, finally! :) Took them long enough considering QML support really was a no-brainer since day one...


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