Mercator

Mercator

OpenStreetMap but as terminal user interface (TUI) program and Bubble Tea Bubble.

Build

$ go get
$ go build .

The binary is called mercator

Usage

mercator accepts latitude and longitude as arguments, e.g.:

$ mercator 25.0782266 -77.3383438

It also accepts a location name or address, e.g.:

$ mercator miami

Style

mercator accepts the -style flag with an integer value representing one of the options listed as Style, e.g.:

$ mercator -style 4 new york

Navigation

• arrow up/k: Move north
• arrow right/l: Move east
• arrow down/j: Move south
• arrow left/h: Move west
• -/_: Zoom out
• +/=: Zoom in

Bubble

You can embed the mapview into your Bubble Tea application:

package main

import (
  tea "github.com/charmbracelet/bubbletea"
  "github.com/mrusme/mercator/mapview"
)

type model struct {
  mv mapview.Model
}

func main() {
  m := NewModel()
  m.mv.SetLocation("jamaica", 15)

  p := tea.NewProgram(m, tea.WithAltScreen())
  if _, err := p.Run(); err != nil {
    panic(err)
  }
}

func NewModel() model {
  m := model{}
  m.mv = mapview.New(80, 24)
  return m
}

func (m model) Init() tea.Cmd {
  return tea.Batch(tea.EnterAltScreen)
}

func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
  switch mt := msg.(type) {
  case tea.KeyMsg:
    switch mt.String() {
    case "q", "esc", "ctrl+c":
      return m, tea.Quit
    }

  case tea.WindowSizeMsg:
    m.mv.Width = mt.Width
    m.mv.Height = mt.Height
    return m, nil

  }

  var cmd tea.Cmd
  m.mv, cmd = m.mv.Update(msg)
  return m, cmd
}

func (m model) View() string {
  return m.mv.View()
}