yakra
commented
2 years ago https://github.com/yakra/tmtools/tree/master/canvas was my attempt at making CHM-style maps, spitting out an HTML file and using the canvas feature to draw highway segments.
No documentation, no updates in 3 years (before work started on C++ siteupdate) so modern colors with the TM prefix are unsupported. The code's a bit ugly & embarrassing. :)
There were plans (as with TMG2HTML) to draw map tiles to the canvas and then overlay the highway segments on top, but I never got it to work right, and moved on to other things.
...At least it's something?
Thinking about this as I'm trying to put together a poster-size map of last summer's Iceland trip where there's a map as a background and various pictures placed on top in locations on the map near where they were taken. Seemed like a nice feature to have my TM travels from the trip on the map, so I have generated such a background map from mapview on the best resolution display I have access to. Not bad, but I am not sure it's going to look great printed in a large form.
The idea is to have an option to generate and download a map but with tiles from a tighter zoom level and still have the travels superimposed. Details very much TBD. Not even sure if this would be better as an option on the web front end or if it would be something done, say, by a Python program that reads in map tiles and draws TM data on top, writing out a large PNG or something.