1 files changed, 51 insertions, 0 deletions
diff --git a/debian/missing-sources/epoch/src/basic/area.coffee b/debian/missing-sources/epoch/src/basic/area.coffee
new file mode 100644
index 0000000..e44b480
--- /dev/null
+++ b/debian/missing-sources/epoch/src/basic/area.coffee
@@ -0,0 +1,51 @@
+
+# Static stacked area chart implementation using d3.
+class Epoch.Chart.Area extends Epoch.Chart.Plot
+  constructor: (@options={}) ->
+    @options.type ?= 'area'
+    super(@options)
+    @draw()
+
+  # Generates a scale needed to appropriately render the stacked visualization.
+  # @return [Function] The y scale for the visualization.
+  y: ->
+    a = []
+    for layer in @getVisibleLayers()
+      for own k, v of layer.values
+        a[k] += v.y if a[k]?
+        a[k] = v.y unless a[k]?
+    d3.scale.linear()
+      .domain(@options.range ? [0, d3.max(a)])
+      .range([@height - @margins.top - @margins.bottom, 0])
+
+  # Renders the SVG elements needed to display the stacked area chart.
+  draw: ->
+    [x, y, layers] = [@x(), @y(), @getVisibleLayers()]
+
+    @g.selectAll('.layer').remove()
+    return if layers.length == 0
+
+    area = d3.svg.area()
+      .x((d) -> x(d.x))
+      .y0((d) -> y(d.y0))
+      .y1((d) -> y(d.y0 + d.y))
+
+    stack = d3.layout.stack()
+      .values((d) -> d.values)
+
+    data = stack layers
+
+    layer = @g.selectAll('.layer')
+      .data(layers, (d) -> d.category)
+
+    layer.select('.area')
+      .attr('d', (d) -> area(d.values))
+
+    layer.enter().append('g')
+      .attr('class', (d) -> d.className)
+
+    layer.append('path')
+      .attr('class', 'area')
+      .attr('d', (d) -> area(d.values))
+
+    super()