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abstreet/docs/TODO_ux.md

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TODO - GUI and UX

Fix existing stuff

  • try showing traffic signals by little boxes at the end of lanes

    • red circle means right turn on red OK, red right arrow means nope, green means normal turns ok, green arrow means protected left, crosswalk hand or stick figure

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

  • color roads as solid black when zoomed out, and make intersections similar (except for stop sign / signal)

  • audit all panics

  • tune text color, size, padding

  • click cycle diagram to edit duration

  • revamp stop sign editor

  • toggle rewind mode

  • yellow or flashing red/yellow for yields

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

  • traffic signal cycles go offscreen sometimes!

  • navigator

    • show options on map
    • stop jumping text size

General ezgui stuff

  • optionally limit canvas scrolling/zooming to some map bounds
  • X on all menus
  • when dragging, dont give mouse movement to UI elements
  • start context menu when left click releases and we're not dragging
  • can we change labels in modal or top menu? show/hide
  • bold hotkey letters

New features

  • swap direction of one-way
  • convert between one- and two-way if there's enough space
  • collapse smaller roads/neighborhoods and just show aggregate stats about them (in/out flow, moving/blocked within)
  • undo support for edits

Better rendering

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

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

Mission Edit Mode

  • neighborhood
    • how to "pop" up the menu, go back to load/create and even to managing scenarios? feels like a stack.
    • display some instructions in the modal thing ("move a point by grabbing it")
    • warp to neighborhood center and zoom out when loading one (or even hovering in the menu?)
    • display all and click to edit
      • draw text in map-space, or be able to scale it
    • renaming
  • scenario
    • visualize should just be the default thing
    • summarize in the modal menu, dont display the ugly text
    • almost feels like a list of 3 'command' types, each of which can be visualized:
      • seed cars
      • spawn agents
      • spawn agents from border
    • kind of need to CRUD this list
    • time input is very unclear, put help text in there
    • combine the spawn and border spawn... choose neighborhood OR border
      • choose in a menu list, or click on the map
        • draw the border nodes loudly
    • visualize better
      • draw separate arrows src/dst, on each side of text
        • draw text at a fixed size, not in screenspace, specify the font size.
        • associate font size with Text, probably
      • highlight a region, draw counts to/from it in some meaningful way
      • timer slider (except timeslices arent neatly in hour blocks, though they maybe should be)
      • a table (with color-coded entries) is actually perfect