abstreet/docs/TODO_ux.md

TODO - GUI and UX

Fix existing stuff

• if a lane could feasibly have multiple turn options but doesnt, print "ONLY"

• audit all panics

• tune text color, size, padding

• click cycle diagram to edit duration

• yellow or flashing red/yellow for yields

• text box entry: highlight char looks like replace mode; draw it btwn chars

General ezgui stuff

• arbitrary viewports?!
• tiling wm

New features

• collapse smaller roads/neighborhoods and just show aggregate stats about them (in/out flow, moving/blocked within)

Better rendering

• depict residential bldg occupany size somehow
• rooftops
  • https://thumbs.dreamstime.com/b/top-view-city-street-asphalt-transport-people-walking-down-sidewalk-intersecting-road-pedestrian-81034411.jpg
  • https://thumbs.dreamstime.com/z/top-view-city-seamless-pattern-streets-roads-houses-cars-68652655.jpg
• general inspiration
  • https://gifer.com/en/2svr
  • https://www.fhwa.dot.gov/publications/research/safety/05078/images/fig6.gif
  • http://gamma.cs.unc.edu/HYBRID_TRAFFIC/images/3d-topdown.jpg
• color tuning
  • neutral (white or offwhite) color and make noncritical info close to that. http://davidjohnstone.net/pages/lch-lab-colour-gradient-picker, chroma < 50

Performance

• it's a pity we have to redo DrawCar work for all those parked cars every tick
• show FPS or some kind of measure of lag
• sleep better in the event loop
  • first make UserInput borrow state and not need to consume
• more speculative performance ideas
  • specialized shaders for common shapes like circles?
  • try https://docs.rs/dymod/0.1.0/dymod/ to link in a release-mode ezgui crate?

Depicting traffic unzoomed

• strange things to depict
  • cars partly straddling roads
  • some lanes backed up, others moving
  • peds (lots of them in one position maybe!)
  • intersections (simultaneous turns, some blocked, others not)
  • peds waiting for bus
• general ideas
  • darked colors (contrast map bg and road)
  • show min/max bounds (exact max is hard, but could calculate best-case easily)
  • percentage of capacity instead of an exact, moving length
• criteria
  • at low zoom, easily pinpoint where things are moving and stuck
  • include all agents