extern/mapscii
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🐁 showing lat/lon under cursor, center on click

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This commit is contained in:
Michael Straßburger 2017-04-29 00:15:31 +02:00
parent cf757772f2
commit d2c0c993cb
2 changed files with 27 additions and 12 deletions
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35
src/Mapscii.coffee
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@ -98,24 +98,41 @@ module.exports = class Mapscii
@renderer.setSize @width, @height
_updateMousePosition: (event) ->
projected =
x: (event.x-.5)*2
y: (event.y-.5)*4
size = utils.tilesizeAtZoom @zoom
[dx, dy] = [projected.x-@width/2, projected.y-@height/2]
z = Math.min config.tileRange, Math.max 0, Math.floor @zoom
center = utils.ll2tile @center.lon, @center.lat, z
@mousePosition = utils.tile2ll center.x+(dx/size), center.y+(dy/size), z
_onClick: (event) ->
@_updateMousePosition event
if @mouseDragging and event.button is "left"
# TODO lat/lng based drag&drop
# @view[0] -= (@mouseDragging.x-@mousePosition.x)<<1
# @view[1] -= (@mouseDragging.y-@mousePosition.y)<<2
@_draw()
@mouseDragging = false
else
@setCenter @mousePosition.lat, @mousePosition.lon
@_draw()
_onMouseScroll: (event) ->
@_updateMousePosition event
# TODO: handle .x/y for directed zoom
@zoomBy config.zoomStep * if event.button is "up" then -1 else 1
@_draw()
_onMouseMove: (event) ->
projected =
x: event.x * 2
y: event.y * 4
@_updateMousePosition event
# start dragging
if event.button is "left"
@ -124,14 +141,12 @@ module.exports = class Mapscii
# @view[0] -= (@mouseDragging.x-event.x)<<1
# @view[1] -= (@mouseDragging.y-event.y)<<2
if not @renderer.isDrawing and @renderer.lastDrawAt < Date.now()-100
@_draw()
@mouseDragging = x: event.x, y: event.y
# if not @renderer.isDrawing and @renderer.lastDrawAt < Date.now()-100
# @_draw()
# @mouseDragging = x: event.x, y: event.y
else
@mouseDragging = x: event.x, y: event.y
# update internal mouse tracker
@mousePosition = projected
@notify @_getFooter()
_onKey: (key) ->
@ -182,7 +197,7 @@ module.exports = class Mapscii
"center: #{utils.digits @center.lat, 3}, #{utils.digits @center.lon, 3} "+
"zoom: #{utils.digits @zoom, 2} "+
"mouse: #{@mousePosition.x-@width/2} #{@mousePosition.y-@height/2} "
"mouse: #{utils.digits @mousePosition.lat, 3}, #{utils.digits @mousePosition.lon, 3} "
notify: (text) ->
@_write "\r\x1B[K"+text unless config.headless