swapp.ls
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# DEPRECATED
# Use web/static/js/main.js instead.
# Livescript transpiles to javascript, and is easier on the eyes and brain.
# Get the `lsc` binary from here : http://livescript.net
# It is quite close to Python, syntax-wise, and full of sugar.
# To transpile this file to javascript, and generate `swapp.js` :
# $ lsc --compile swapp.ls
# You can have it watch for changes and transpile automatically :
# $ lsc --watch --compile swapp.ls
# All the "javascript" code is in this file, except for inline scripts in
# templates, such as in `home.html.jinja2`.
# Note: We use Promises and ES6 whenever relevant.
# You also WILL NEED d3js v4 documentation : https://d3js.org/
# We're using a custom build of 4.9.1, one line changed, see d3-custom.js
# Event bubbling cannot trigger two rects unless we make an event dispatcher,
# and d3's brush is stopping propagation, as it should by default.
###############################################################################
const GOLDEN_RATIO = 2 / (1 + Math.sqrt(5)) # Between 0 and 1 (0.618…)
###############################################################################
class Target
(@slug, @name, @config) ->
@active = @config.active
###############################################################################
export class SpaceWeather
"""
The main app, instanciated from an inline script.
It defaults to an interval starting two months ago, and ending in a month.
(both at midnight)
"""
API_TIME_FORMAT = "YYYY-MM-DDTHH:mm:ss"
INPUT_TIME_FORMAT = "YYYY-MM-DD"
(@configuration) ->
console.info """©2017
_ _ _ _ ____
| | | | ___| (_) ___ | _ \\ _ __ ___ _ __ __ _
| |_| |/ _ \\ | |/ _ \\| |_) | '__/ _ \\| '_ \\ / _` |
| _ | __/ | | (_) | __/| | | (_) | |_) | (_| |
|_| |_|\\___|_|_|\\___/|_|_ |_|_ \\___/| .__/ \\__,_|
| |__ _ _ / ___| _ \\| _ \\| _ \\_|
| '_ \\| | | | | | | | | | |_) | |_) |
| |_) | |_| | | |___| |_| | __/| __/
|_.__/ \\__, | \\____|____/|_| |_|
|___/
The full source of this website is available at :
https://gitlab.irap.omp.eu/CDPP/SPACEWEATHERONLINE
""" # HelioPropa by CDPP (mushed 'cause we need to escape backslashes)
@targets = {}
configs = [@configuration.targets[k] for k of @configuration.targets]
configs.forEach (target_config) ~>
@addTarget(new Target(target_config.slug, target_config.name, target_config))
@parameters = {}
@configuration['parameters'].forEach (p) ~>
@parameters[p['id']] = p
@orbits = null # an Orbiter instance (defined below)
@time_series = [] # a List of TimeSeries instances
init: (started_at, stopped_at) ->
"""
This is called by the inline bootstrap javascript code.
This ain't in the constructor because it might return a Promise later on.
(for the loader, for example)
"""
# We set the h/m/s to zero to ensure we benefit from the daily cache.
started_at = moment(started_at).hours(0).minutes(0).seconds(0)
stopped_at = moment(stopped_at).hours(0).minutes(0).seconds(0)
@setStartAndStop(started_at, stopped_at)
@loadAndCreatePlots(started_at, stopped_at)
window.addEventListener 'resize', ~> @resize()
this
buildDataUrlForTarget: (target_slug, started_at, stopped_at) ->
url = @configuration['api']['data_for_interval']
url = url.replace('<target>', target_slug)
url = url.replace('<started_at>', started_at)
url = url.replace('<stopped_at>', stopped_at)
url
buildDownloadUrl: ->
[started_at, stopped_at] = @getDomain()
targets = [t for t of @targets when @targets[t].active].sort().join('-')
url = @configuration['api']['download']
url = url.replace('<targets>', targets)
url = url.replace('<started_at>', started_at.format(API_TIME_FORMAT))
url = url.replace('<stopped_at>', stopped_at.format(API_TIME_FORMAT))
url
buildSampUrl: ->
[started_at, stopped_at] = @getDomain()
targets = [t for t of @targets when @targets[t].active].sort().join('-')
parameters = [p for p of @parameters when @parameters[p].active].sort().join('-')
url = @configuration['api']['samp']
url = url.replace('<targets>', targets)
url = url.replace('<params>', parameters)
url = url.replace('<started_at>', started_at.format(API_TIME_FORMAT))
url = url.replace('<stopped_at>', stopped_at.format(API_TIME_FORMAT))
url
buildSampName: ->
[started_at, stopped_at] = @getDomain()
targets = [t.name for t in @getEnabledTargets()].sort().join(', ')
"Heliopropa for #{targets} from #{started_at.format(API_TIME_FORMAT)} to #{stopped_at.format(API_TIME_FORMAT)}."
addTarget: (target) ->
@targets[target.slug] = target
this
# enableAllTargets: ->
# for slug, target of @targets
# enableTarget(slug)
# this
getEnabledTargets: ->
[target for slug, target of @targets when target.active]
enableTarget: (target_slug) ->
@time_series.forEach((ts) ~> ts.show() if ts.target.slug == target_slug && @parameters[ts.parameter].active)
@targets[target_slug].active = true
@orbits?.enableTarget target_slug
this
disableTarget: (target_slug) ->
@time_series.forEach((ts) -> ts.hide() if ts.target.slug == target_slug)
@targets[target_slug].active = false
@orbits?.disableTarget target_slug
this
resize: ->
@orbits?.resize()
@time_series.forEach((ts) -> ts.resize())
this
showLoader: ->
$('#plots_loader').show()
hideLoader: ->
$('#plots_loader').hide()
loadData: (target_slug, started_at, stopped_at) ->
"""
Load the data as CSV for the specified target and interval,
and return it in a Promise.
"""
sw = this
new Promise((resolve, reject) ->
url = sw.buildDataUrlForTarget(target_slug, started_at, stopped_at)
d3.csv(url, (csv) ->
console.debug("Requested CSV for #{target_slug}…", csv)
timeFormat = d3.utcParse('%Y-%m-%dT%H:%M:%S%Z')
data = { 'hee': [] }
configuration['parameters'].forEach((parameter) ->
data[parameter['id']] = []
)
unless csv then reject 'invalid'
unless csv.length then reject 'empty'
csv.forEach((d) ->
dtime = timeFormat(d['time'])
configuration['parameters'].forEach((parameter) ->
id = parameter['id']
val = parseFloat(d[id])
if not isNaN(val)
data[id].push({x: dtime, y: val})
)
if d['xhee'] and d['yhee']
data['hee'].push({
t: dtime, x: parseFloat(d['xhee']), y: parseFloat(d['yhee'])
})
)
resolve data
)
)
loadAndCreatePlots: (started_at, stopped_at) ->
"""
started_at: moment(.js) datetime object
stopped_at: moment(.js) datetime object
"""
@showLoader()
@started_at = started_at
@stopped_at = stopped_at
@orbits = new Orbits(@configuration.orbits_container, @configuration)
started_at = started_at.format(API_TIME_FORMAT)
stopped_at = stopped_at.format(API_TIME_FORMAT)
targets = [@targets[k] for k of @targets]
targets.forEach((target) ~>
targetButton = $(".targets-filters .target.#{target.slug}")
targetButton.addClass('loading')
targetButton.removeClass('failed error empty')
)
handleTarget = (i) ~>
if i >= targets.length then return
target = targets[i]
console.info "Loading CSV data of #{target.name}…"
targetButton = $(".targets-filters .target.#{target.slug}")
@loadData(target.slug, started_at, stopped_at).then(
(data) ~>
console.info "Loaded CSV data of #{target.name}.", data
@createTimeSeries(target, data)
@orbits.initOrbiter(target.slug, target.config, data['hee'])
targetButton.removeClass('loading')
if target.active then @hideLoader() else @disableTarget(target.slug)
handleTarget(i+1)
,
(error) ~>
switch error
case 'invalid'
console.error("Failed loading CSV data of #{target.name}.")
# Sometimes, AMDA's API returns garbage, so the CSV sometime fails
# But when we re-generate it a second time, usually it's okay.
# alert("There was an error with #{target.name}.\nPlease retry in a few moments.")
targetButton.addClass('error')
# @is_invalid = true
break
case 'empty'
msg = "No data for #{target.name}\n during interval from \n#{started_at} to #{stopped_at}."
console.warn(msg)
targetButton.addClass('empty')
# alert(msg)
break
targetButton.addClass('failed')
targetButton.removeClass('loading')
@hideLoader()
handleTarget(i+1)
)
handleTarget(0)
this
clearPlots: ->
@orbits.clear()
@time_series.forEach((ts) -> ts.clear())
@orbits = null
@time_series = [] # do we de-reference everything ? listeners ? #memleak?
this
createTimeSeries: (target, data) ->
@configuration['parameters'].forEach((parameter) ~>
container = @configuration['time_series_container']
id = parameter['id'] ; title = parameter['title']
if id not of data then console.error("No data for id '#{id}'.", data)
console.log(target['name'], id, data[id])
if data[id].length
@time_series.push(new TimeSeries(
id, title, target, data[id], @parameters[id].active, container, {
'started_at': @started_at,
'stopped_at': @stopped_at,
}
))
)
# Let's override all time series' input handlers to link them together
@time_series.forEach((ts) ~> # returning true may be faster, how to bench?
ts.options['onMouseOver'] = ~>
true # let's do nothing, we'll show the cursor during moveCursor()
ts.options['onMouseOut'] = ~>
@time_series.forEach((ts2) -> ts2.hideCursor()) ; true
ts.options['onMouseMove'] = (t) ~>
@time_series.forEach((ts2) -> ts2.moveCursor(t))
@orbits?.moveToDate(t) ; true
ts.options['onBrushEnd'] = (sta, sto) ~>
@resizeDomain(moment(sta), moment(sto)) ; true
ts.options['onDblClick'] = ~>
@resetZoom() ; $("\#zoom_controls_help")?.remove() ; true
)
@time_series
getEnabledParameters: ->
[p for slug, p in @parameters when p.active]
enableParameter: (parameter_slug) ->
if parameter_slug not of @parameters then console.error("Unknown parameter #{parameter_slug}.")
@parameters[parameter_slug].active = true
@time_series.forEach((ts) ~> ts.show() if ts.parameter == parameter_slug && @targets[ts.target.slug].active)
this
disableParameter: (parameter_slug) ->
if parameter_slug not of @parameters then console.error("Unknown parameter #{parameter_slug}.")
@parameters[parameter_slug].active = false
@time_series.forEach((ts) -> ts.hide() if ts.parameter == parameter_slug)
this
showCatalogLayer: (catalog_slug) ->
@time_series.forEach((ts) -> ts.showCatalogLayer(catalog_slug))
this
hideCatalogLayer: (catalog_slug) ->
@time_series.forEach((ts) -> ts.hideCatalogLayer(catalog_slug))
this
getDomain: ->
if @current_started_at? and @current_stopped_at?
return [@current_started_at, @current_stopped_at]
return [@started_at, @stopped_at]
resizeDomain: (started_at, stopped_at) ->
if stopped_at < started_at
[started_at, stopped_at] = [stopped_at, started_at]
if started_at == stopped_at
console.warn "Please provide distinct start and stop dates."
return
max_stopped_at = started_at.clone().add(2, 'years')
if stopped_at > max_stopped_at
console.warn "The time interval was truncated beacuse it was bigger than two years."
stopped_at = max_stopped_at
@setStartAndStop(started_at, stopped_at)
formatted_started_at = started_at.format()
formatted_stopped_at = stopped_at.format()
# if (not @is_invalid) and
if (@started_at <= started_at <= @stopped_at) and
(@started_at <= stopped_at <= @stopped_at) then
console.info "Resizing the temporal domain from #{formatted_started_at} to #{formatted_stopped_at} without fetching new data…"
# We first resize the hidden time series and only afterwards we resize
# the visible ones, for a smoother transition.
#@time_series.forEach((ts) -> if not ts.visible then ts.zoomIn(started_at, stopped_at))
tsv = @time_series.filter((ts) -> ts.visible)
tsv_cursor = 0
tsv_length = tsv.length
zoomedOnVisible = new Promise((resolve, reject) ->
tsv_zoom_on_next = (i) ->
if i >= tsv_length
resolve()
return
ts = tsv[i]
ts.zoomIn(started_at, stopped_at)
.then(-> tsv_zoom_on_next(i+1))
tsv_zoom_on_next(0)
)
zoomedOnVisible.then(->
@time_series.forEach((ts) -> if not ts.visible then ts.zoomIn(started_at, stopped_at))
)
# @time_series.forEach((ts) -> if ts.visible then ts.zoomIn(started_at, stopped_at))
@orbits.resizeDomain started_at, stopped_at
else
# @is_invalid = false
console.info "Resizing the temporal domain from #{formatted_started_at} to #{formatted_stopped_at} and fetching new data…"
console.warn "This might take a good while… Why not see what else we're up to on http://cdpp.eu while you're waiting?"
@clearPlots()
@loadAndCreatePlots(started_at, stopped_at)
this
resetZoom: ->
@time_series.forEach((ts) -> ts.resetZoom())
@orbits.resetZoom()
@setStartAndStop(@started_at, @stopped_at)
this
setStartAndStop: (started_at, stopped_at) ->
console.info "Setting time interval from #{started_at} to #{stopped_at}…"
@current_started_at = started_at
@current_stopped_at = stopped_at
$("\#started_at").val(started_at.format(INPUT_TIME_FORMAT))
$("\#stopped_at").val(stopped_at.format(INPUT_TIME_FORMAT))
this
###############################################################################
###############################################################################
export class TimeSeries
# Time in x-axis
# Data in y-axis
(@parameter, @title, @target, @data, @visible, @container, @options = {}) ->
# parameter : slug of the parameter to observe, like btan or pdyn
# title : string, more descriptive, shown on the left of the Y axis
# target : target object, like described in configuration
# data : list of {x: <datetime>, y: <float>}
# options: object with the following properties
# started_at (Moment obj)
# stopped_at (Moment obj)
now = moment()
@predictiveData = [d for d in @data when moment(d.x) >= now]
@init()
toString: -> "#{@title} of #{@target.name}"
init: ->
console.info "Initializing plot of #{@}…"
@margin = {
top: 30,
right: 20,
bottom: 30,
left: 80
}
[width, height] = @recomputeDimensions()
# Pre-compute extents for performance when zooming.
# These are final and always hold the biggest extent.
@xDataExtent = d3.extent(@data, (d) -> d.x)
@yDataExtent = d3.extent(@data, (d) -> d.y)
if @options['started_at'] then @xDataExtent[0] = @options['started_at']
if @options['stopped_at'] then @xDataExtent[1] = @options['stopped_at']
# https://github.com/d3/d3-scale/blob/master/src/utcTime.js
# scaleUtc collides with our custom multiFormat ticks
# @xScale = d3.scaleUtc().domain(@xDataExtent)
@xScale = d3.scaleTime().domain(@xDataExtent)
# Domain on a log scale MUST NOT cross zero
# @yScale = d3.scaleLog().domain(@yDataExtent)
@yScale = d3.scaleLinear().domain(@yDataExtent)
formatMillisecond = d3.utcFormat(".%L")
formatSecond = d3.utcFormat(":%S")
formatMinute = d3.utcFormat("%H:%M")
formatHour = d3.utcFormat("%H:%M")
formatDay = d3.utcFormat("%a %d")
formatWeek = d3.utcFormat("%b %d")
formatMonth = d3.utcFormat("%B")
formatYear = d3.utcFormat("%Y")
multiFormat = (date) ->
if date > d3.timeSecond(date) then return formatMillisecond(date)
if date > d3.timeMinute(date) then return formatSecond(date)
if date > d3.timeHour(date) then return formatMinute(date)
if date > d3.timeDay(date) then return formatHour(date)
if date > d3.timeMonth(date)
if date > d3.timeWeek(date) then return formatDay(date)
else return formatWeek(date)
if date > d3.timeYear(date) then return formatMonth(date)
return formatYear(date)
@xAxis = d3.axisBottom()
.tickFormat(multiFormat)
.ticks(7)
@yAxis = d3.axisLeft()
.ticks(10)
@svg = d3.select(@container).append('svg')
@svg.attr("class", "#{@parameter} #{@target.slug}")
@line = d3.line()
.x((d) ~> @xScale(d.x))
.y((d) ~> @yScale(d.y))
@plotWrapper = @svg.append('g')
@plotWrapper.attr('transform',
'translate(' + @margin.left + ',' + @margin.top + ')')
clipId = "ts-clip-#{@parameter}-#{@target.slug}"
@clip = @svg.append("defs").append("svg:clipPath")
.attr("id", clipId)
.append("svg:rect")
.attr("x", 0)
.attr("y", 0)
@pathWrapper = @plotWrapper.append('g')
@pathWrapper.attr("clip-path", "url(\##{clipId})")
@path = @pathWrapper.append('path')
.datum(@data)
.classed('line', true)
@predictiveDataPath = @pathWrapper.append('path')
.datum(@predictiveData)
.classed('predictive-line', true)
@createCatalogLayers()
@horizontalLines = []
if @options['horizontalLines']
for line in @options['horizontalLines']
lineElement = @svg.append("line")
.attr("class", "line horitonal-line")
.style("stroke", "orange") # move to CSS
.style("stroke-dasharray", ("3, 2")) # idem
@horizontalLines.push({'element': lineElement, 'config': line})
@brush = @plotWrapper.append("g")
.attr("class", "brush")
@plotWrapper.append('g').classed('x axis', true)
@plotWrapper.append('g').classed('y axis', true)
@yAxisText = @plotWrapper.append("text")
.attr("transform", "rotate(-90)")
.attr("dy", "1em")
.style("text-anchor", "middle")
.text(@title)
@yAxisTextTarget = @plotWrapper.append("text")
.attr("transform", "rotate(-90)")
.attr("dy", "1em")
.style("text-anchor", "middle")
.style("font-style", "oblique")
.text(@target.name)
@focus = @plotWrapper.append('g').style("display", "none")
@cursorCircle = @focus.append("circle")
.attr("class", "cursor-circle")
.attr("r", 3)
dx = 8
@cursorValueShadow = @focus.append("text")
.attr("class", "cursor-text cursor-text-shadow")
.attr("dx", dx)
.attr("dy", "-.3em")
@cursorValue = @focus.append("text")
.attr("class", "cursor-text cursor-value")
.attr("dx", dx)
.attr("dy", "-.3em")
@cursorDateShadow = @focus.append("text")
.attr("class", "cursor-text cursor-text-shadow")
.attr("dx", dx)
.attr("dy", "1em")
@cursorDate = @focus.append("text")
.attr("class", "cursor-text cursor-date")
.attr("dx", dx)
.attr("dy", "1em")
#console.debug "Creating the zooming brush for #{@}…"
# Note that d3.brush handles its own resizing on window.resize
@brushFunction =
d3.brushX()
.extent([[0, 0], [width, height]])
.handleSize(0)
.on("end", @onBrushEnd)
# .on("start", @onBrushStart)
# .on("move", @onBrushMove)
@brush.call(@brushFunction)
# We're also adding our own cursor events to the brush's overlay,
# because it captures events and a rect cannot contain another.
@brushOverlay = @svg.select(".brush .overlay")
@brushOverlay
.on("mouseover.swapp", @onMouseOver)
.on("mouseout.swapp", @onMouseOut)
.on("mousemove.swapp", @onMouseMove)
.on("dblclick.swapp", @onDoubleClick)
@resize()
recomputeDimensions: ->
width = Math.ceil($(@container).width() - @margin.left - @margin.right)
height = Math.ceil(RATIO * width)
@plotWidth = width
@plotHeight = height
[width, height]
RATIO = Math.pow(GOLDEN_RATIO, 4)
resize: ->
[width, height] = @recomputeDimensions()
console.debug("Resizing #{@}: #{width} x #{height}…")
@xScale.range([0, width]);
@yScale.range([height, 0]);
@svg.attr('width', width + @margin.right + @margin.left)
.attr('height', height + @margin.top + @margin.bottom)
@clip.attr("width", width)
.attr("height", height)
@path.attr('d', @line)
@predictiveDataPath.attr('d', @line)
for line in @horizontalLines
lineValue = @yScale(line['config']['value']) + @margin.top
line['element'].attr("x1", @margin.left)
.attr("y1", lineValue)
.attr("x2", @margin.left + width)
.attr("y2", lineValue)
@xAxis.scale(@xScale)
@yAxis.scale(@yScale)
#if width < 600 then @xAxis.ticks(3) else @xAxis.ticks(7, ",f")
@xAxis.ticks(Math.floor(width / 80.0)) # not working as expected
@yAxis.ticks(Math.floor(height / 18.0))
@svg.select('.x.axis')
.attr('transform', 'translate(0,' + height + ')')
.call(@xAxis)
@svg.select('.y.axis')
.call(@yAxis)
@yAxisText.attr("y", 20 - @margin.left)
.attr("x", 0 - (height / 2))
@yAxisTextTarget.attr("y", 0 - @margin.left)
.attr("x", 0 - (height / 2.0))
@resizeCatalogLayers()
unless @visible then @hide()
this
clear: ->
$(@svg.node()).remove()
@visible = false
show: ->
$(@svg.node()).show()
@visible = true
hide: ->
$(@svg.node()).hide()
@visible = false
onMouseMove: ~>
x = @xScale.invert(d3.mouse(@brushOverlay.node())[0])
if @options.onMouseMove? then @options.onMouseMove(x) else @moveCursor(x)
onMouseOver: ~>
if @options.onMouseOver? then @options.onMouseOver() else @showCursor()
onMouseOut: ~>
if @options.onMouseOut? then @options.onMouseOut() else @hideCursor()
onDoubleClick: ~>
if @options.onDblClick? then @options.onDblClick() else @resetZoom()
onBrushEnd: ~>
s = d3.event.selection
if s
minmax = [s[0], s[1]].map(@xScale.invert, @xScale)
@brush.call(@brushFunction.move, null) # some voodoo to hide the brush
if @options.onBrushEnd? then @options.onBrushEnd(minmax[0], minmax[1])
else @zoomIn(minmax[0], minmax[1])
zoomIn: (startDate, stopDate) ->
console.debug "Zooming in #{@} from #{startDate} to #{stopDate}."
[minDate, maxDate] = @xDataExtent
if startDate < minDate then startDate = minDate
if stopDate > maxDate then stopDate = maxDate
@xScale.domain([startDate, stopDate])
@yScale.domain(d3.extent(@data, (d) -> if startDate <= d.x <= stopDate then d.y else 0))
@applyZoom()
resetZoom: ->
@xScale.domain(@xDataExtent)
@yScale.domain(@yDataExtent)
@applyZoom()
applyZoom: ->
duration = 0
if @visible
duration = 750
console.debug("Applying zoom to visible #{@}…")
t = @svg.transition().duration(duration)
@svg.select('.x.axis').transition(t).call(@xAxis)
@svg.select('.y.axis').transition(t).call(@yAxis)
@path.transition(t).attr('d', @line)
@predictiveDataPath.transition(t).attr('d', @line)
else
console.debug("Applying zoom to hidden #{@}…")
@svg.select('.x.axis').call(@xAxis)
@svg.select('.y.axis').call(@yAxis)
@path.attr('d', @line)
@predictiveDataPath.attr('d', @line)
@resizeCatalogLayers()
@hideCursor()
new Promise((resolve, reject) ->
if 0 == duration
resolve()
else
setTimeout((-> resolve()), duration+50)
)
createCatalogLayers: ->
@layers_rects = {}
for catalog_slug, layers of @target.config.layers
#console.debug("Creating layers of #{catalog_slug}…", layers)
@layers_rects[catalog_slug] = []
for layer in layers
started_at = moment(layer.start)
stopped_at = moment(layer.stop)
#console.debug(started_at, stopped_at)
#console.debug(layer.start, layer.stop)
@layers_rects[catalog_slug].push(
@createCatalogLayer(started_at, stopped_at)
)
@hideCatalogLayer(catalog_slug)
this
createCatalogLayer: (started_at, stopped_at) ->
layer_rect = @pathWrapper.append("rect")
.attr('y', 0)
.attr('height', @plotHeight)
.attr('fill', '#FFFD64C2')
# ↓ Not triggered, mouse events are captured before they reach this rect
#layer_rect.append('svg:title').text("I AM TEXT")
layer_rect
resizeCatalogLayers: ->
for catalog_slug, layers of @target.config.layers
#console.debug("Resizing layers of #{catalog_slug}…", layers)
for layer, i in layers
started_at = moment(layer.start)
stopped_at = moment(layer.stop)
width = Math.max(2, @xScale(stopped_at) - @xScale(started_at))
@layers_rects[catalog_slug][i].attr('x', @xScale(started_at))
.attr('width', width)
this
showCatalogLayer: (catalog_slug) ->
for layer, i in @target.config.layers[catalog_slug]
@layers_rects[catalog_slug][i].style("display", null)
this
hideCatalogLayer: (catalog_slug) ->
for layer, i in @target.config.layers[catalog_slug]
@layers_rects[catalog_slug][i].style("display", "none")
this
showCursor: ->
@focus.style("display", null)
hideCursor: ->
@focus.style("display", "none")
bisectDate: d3.bisector((d) -> d.x).left # /!\ complex
timeFormat: d3.utcFormat("%Y-%m-%d %H:%M")
moveCursor: (x0) ->
i = @bisectDate(@data, x0, 1)
d0 = @data[i - 1]
d1 = @data[i]
if (not d1) or (not d0)
@hideCursor()
return
d = if x0 - d0.x > d1.x - x0 then d1 else d0
xx = @xScale(d.x)
yy = @yScale(d.y)
mirrored = if @plotWidth? and xx > @plotWidth / 2 then true else false
dx = 8 # horizontal delta between the dot and the text
dx = -1 * dx if mirrored
transform = "translate(#{xx}, #{yy})"
@cursorCircle.attr("transform", transform)
@cursorValue.attr("transform", transform).text(d.y)
.attr('text-anchor', if mirrored then 'end' else 'start')
.attr("dx", dx)
@cursorValueShadow.attr("transform", transform).text(d.y)
.attr('text-anchor', if mirrored then 'end' else 'start')
.attr("dx", dx)
@cursorDate.attr("transform", transform).text(@timeFormat(d.x))
.attr('text-anchor', if mirrored then 'end' else 'start')
.attr("dx", dx)
@cursorDateShadow.attr("transform", transform).text(@timeFormat(d.x))
.attr('text-anchor', if mirrored then 'end' else 'start')
.attr("dx", dx)
@showCursor()
this
###############################################################################
###############################################################################
export class Orbits
"""
View of the solar system from above, with orbits segments for selected time
interval, from real data.
"""
(@container, @options = {}) ->
console.log "Initializing plot of orbits…"
# In the variable names below, x and y are the usual ones.
# (on the plots we show Y on the x axis, and X reversed on the y axis)
@margin = {
top: 30,
right: 20,
bottom: 42,
left: 60
}
@data = {} # slug => HEE array
@orbiters = {} # slug => config
@orbitersElements = {} # see initOrbiter
@orbitersExtrema = {} # slug => local extrema
@lastOrbiterData = {} # slug => most recently used datum for position
@xScale = d3.scaleLinear().domain([-1, 1])
@yScale = d3.scaleLinear().domain([1, -1])
@xAxis = d3.axisBottom().ticks(10)
@yAxis = d3.axisLeft().ticks(10)
@svg = d3.select(@container).append('svg')
@plotWrapper = @svg.append('g')
@plotWrapper.attr('transform', 'translate(' + @margin.left + ',' + @margin.top + ')')
@xAxisLine = @plotWrapper.append('g').classed('x axis', true)
@yAxisLine = @plotWrapper.append('g').classed('y axis', true)
@xAxisTitle = @xAxisLine.append('text').attr('fill', '#000')
@xAxisTitle.style("text-anchor", "middle")
@xAxisTitle.append('tspan').text('Y')
# No : https://bugzilla.mozilla.org/show_bug.cgi?id=308338
# @xAxisTitle.append('tspan').attr('baseline-shift', 'sub').text('HEE')
# Also, don't use em as dy units
@xAxisTitle.append('tspan').attr('dy', '3px').text('HEE').attr('font-size', '8px')
@xAxisTitle.append('tspan').attr('dy', '-3px').text(' (AU)')
@yAxisTitle = @yAxisLine.append('text').attr('fill', '#000')
@yAxisTitle.style("text-anchor", "middle")
@yAxisTitle.append('tspan').text('X')
@yAxisTitle.append('tspan').attr('dy', '3px').text('HEE').attr('font-size', '8px')
@yAxisTitle.append('tspan').attr('dy', '-3px').text(' (AU)')
@yAxisTitle.attr('transform', 'rotate(-90)')
@sun = @plotWrapper.append("svg:image")
.attr('xlink:href', @options.sun.img)
.attr('width', '32px').attr('height', '32px')
@sun.append('svg:title').text("Sun")
$(@svg.node()).hide(); # we'll show it later when there'll be data
@resize()
initOrbiter: (slug, config, data) ->
@data[slug] = data
@orbiters[slug] = config
if data.length
console.info "Initializing orbit of #{config.name}…"
else
console.warn "No orbit data for #{config.name}…"
return
if slug of @orbitersElements then throw new Error("Second init of #{slug}")
# The order is important, as it will define the default z-order
orbit_ellipse = @plotWrapper.append("svg:ellipse")
.classed('orbit orbit_ellipse', true)
orbiter = @plotWrapper.append("svg:image")
.attr('xlink:href', config['img'])
.attr('width', '32px').attr('height', '32px')
orbiter.append('svg:title').text(config.name)
orbit_line = d3.line()
.x((d) ~> @xScale(d.y))
.y((d) ~> @yScale(d.x))
orbit_section = @plotWrapper.append('path')
.datum(data)
.classed('orbit orbit_section', true)
@orbitersElements[slug] =
orbiter: orbiter
orbit_ellipse: orbit_ellipse
orbit_section: orbit_section
orbit_line: orbit_line
@orbitersExtrema[slug] = d3.max(data, (d) ->
Math.max(Math.abs(d.x), Math.abs(d.y))
)
$(@svg.node()).show();
if config.active
@enableTarget slug
else
@disableTarget slug
this
enableTarget: (slug) ->
@orbiters[slug].enabled = true
@showOrbiter slug
disableTarget: (slug) ->
@orbiters[slug].enabled = false
@hideOrbiter slug
showOrbiter: (slug) ->
if not @data[slug].length then return
if not @orbiters[slug].enabled then return
@orbiters[slug].hidden = false
@orbitersElements[slug].orbiter.style("display", null)
@orbitersElements[slug].orbit_ellipse.style("display", null)
@orbitersElements[slug].orbit_section.style("display", null)
@resize(true)
hideOrbiter: (slug) ->
if not @data[slug].length then return
@orbiters[slug].hidden = true
@orbitersElements[slug].orbiter.style("display", "none")
@orbitersElements[slug].orbit_ellipse.style("display", "none")
@orbitersElements[slug].orbit_section.style("display", "none")
@resize(true)
clear: ->
$(@svg.node()).remove()
resize: (animate = false, extremum = null) ->
width = Math.ceil($(@container).width() - @margin.left - @margin.right)
height = Math.ceil(1.0 * width)
console.debug("Resizing orbits : #{width} × #{height}…")
if extremum == null
extremum = 1.1 * d3.max(
[@orbitersExtrema[s] for s, o of @orbiters when not o.hidden]
)
# extremum = 1.1 * d3.max([s for s, o of @orbiters when not o.hidden], (d) ~>
# @orbitersExtrema[d]
# )
@xScale = d3.scaleLinear().domain([-1 * extremum, extremum])
@yScale = d3.scaleLinear().domain([extremum, -1 * extremum])
@xScale.range([0, width])
@yScale.range([height, 0])
@svg.attr('width', width + @margin.right + @margin.left)
.attr('height', height + @margin.top + @margin.bottom)
@sun.attr("x", width / 2.0 - 16).attr("y", height / 2.0 - 16)
for slug, config of @orbiters
@resizeOrbiter(slug, config, width, height, animate)
@xAxis.scale(@xScale)
@yAxis.scale(@yScale)
@svg.select('.x.axis').attr('transform', 'translate(0,' + height + ')')
if animate
t = @svg.transition().duration(750)
t1 = @svg.transition().duration(4750)
@svg.select('.x.axis').transition(t).call(@xAxis);
@svg.select('.y.axis').transition(t).call(@yAxis);
else
@svg.select('.x.axis').call(@xAxis)
@svg.select('.y.axis').call(@yAxis)
@xAxisTitle.attr("x", width / 2)
.attr("y", 37)
@yAxisTitle.attr("x", -1 * height / 2)
.attr("y", -30)
this
resizeOrbiter: (slug, config, width, height, animate = false) ->
data = @data[slug]
if not data.length then return
console.debug("Resizing orbit of #{slug}…")
tt = @svg.transition().duration(750)
el = @orbitersElements[slug]
orbit_section = el['orbit_section']
if animate
t = @svg.transition().duration(750)
orbit_section = orbit_section.transition(tt)
orbit_section.attr('d', el['orbit_line'])
a = config['orbit']['a']
b = config['orbit']['b']
c = Math.sqrt(a*a - b*b)
cx = (width / 2) - c
cy = (height / 2)
orbit_ellipse = el['orbit_ellipse']
if animate
t = @svg.transition().duration(750)
orbit_ellipse = orbit_ellipse.transition(t)
# These ellipses ain't worth much
# Maybe a simple circle whose radius is the mean radius of the orbit ?
orbit_ellipse.attr('cx', cx).attr('cy', cy)
.attr('rx', @xScale(a) - @xScale(0))
.attr('ry', @yScale(b) - @yScale(0))
# .attr('transform', 'rotate(66,'+(cx+c)+', '+cy+')')
@repositionOrbiter(slug, null, true)
this
zoomToTarget: (slug) ->
@resize(true, 1.1 * @orbitersExtrema[slug])
repositionOrbiter: (slug, datum, animate = false) ->
data = @data[slug]
if not data.length then return
datum ?= @lastOrbiterData[slug]
datum ?= data[data.length - 1]
@lastOrbiterData[slug] = datum
el = @orbitersElements[slug]['orbiter']
if animate
t = @svg.transition().duration(750)
el = el.transition(t)
el.attr('x', @xScale(datum.y) - 16)
el.attr('y', @yScale(datum.x) - 16)
this
bisectDate: d3.bisector((d) -> d.t).left
moveToDate: (t) ->
console.warn("Trying to move to an undefined date !") unless t
for slug, el of @orbitersElements
data = @data[slug]
i = @bisectDate(data, t, 1)
d0 = data[i - 1]
d1 = data[i]
continue unless d1 and d0
d = if t - d0.t > d1.t - t then d1 else d0
@repositionOrbiter(slug, d)
this
resizeDomain: (started_at, stopped_at) ->
for slug, config of @orbiters
el = @orbitersElements[slug]
data = @data[slug].filter (d) -> started_at <= d.t <= stopped_at
if not data.length
@hideOrbiter(slug)
continue
el['orbit_section'].datum(data)
el['orbit_section'].attr('d', el['orbit_line'])
@showOrbiter(slug)
resetZoom: ->
for slug, config of @orbiters
el = @orbitersElements[slug]
if not @data[slug].length
@hideOrbiter(slug)
continue
el['orbit_section'].datum(@data[slug])
el['orbit_section'].attr('d', el['orbit_line'])
@showOrbiter(slug)