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some notes about tiles

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Daniel Barlow 2025-05-28 15:26:57 +01:00
parent a8f100b528
commit 41e34b3654
1 changed files with 23 additions and 18 deletions
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@ -45,15 +45,8 @@ of the screen
random notes follow ...
https://git.syndicate-lang.org/tonyg/squeak-phone/raw/commit/474960ddc665ed445a1f5afb0164fe39057720f9/devices/pine64-pinephone/modem-docs/80545ST10798A_LM940_QMI_Command_Reference_Guide_r3.pdf
1) [done] connect Satellite to qmi-nmea
https://codeberg.org/tpikonen/satellite/src/branch/main/satellite/nmeasource.py#L106
2) [nope] do we need modemmanager? might be required if we want lte data,
but that's up to the "site admin" - we don't need it for biscuit itself
@ -88,14 +81,6 @@ elapsed time: what should it actually show? moving time, I guess
should we rename bearing as course in nmea?
rotating the map is going to be complicated because the widget we're
using doesn't support it (bitmapped map tiles)
perhaps we need a server-side component for route planning
7) think about how to use nfc tags or something for profiles so that
it can recognise when it's attached to bicycle or motorbike
@ -127,10 +112,30 @@ the benefit of the caching. If we're going to do that, should it also
do transformation e.g. from lat/long to x/y co-ordinates? We don't
need this bit yet though
3) alternatively we could use mapbox vector tiles, but tbh I'm
struggling to see now that helps. we don't have to transform from
lat/long but instead we have to parse a protobuf, how is that simpler?
https://git.syndicate-lang.org/tonyg/squeak-phone/raw/commit/474960ddc665ed445a1f5afb0164fe39057720f9/devices/pine64-pinephone/modem-docs/80545ST10798A_LM940_QMI_Command_Reference_Guide_r3.pdf
----
... sod, forgot to push latest changes from noetbook
we need to extend to multiple tiles'-worth of map
* get tile for curent lat/long and request overpass data for enough
surrounding tiles to fill the screen
* I think a way is served with all its nodes whether or not they're in
the bbox, so we can just store the ids of ways we've seen and skip
them if the come up again
* render all the polylines into the widget (some day also the labels etc)
* to get it centred on the cyclist, take the tile fractional part *
256, and translate the canvas up and left by that amount
and offset
by