So I whipped out my wand and wrote a custom LineSegmentRenderer which extends
ShadowLineRenderer. I used updateDisplayList to loop through the
lineSeriesItems to draw my custom line.
What I'm charting is surgical cases by day in a given month. What I wanted to
show was a linechart that had weekends colored differently so we'd know why the
case counts plateaued. I feel like I've just done my first bit of advanced
coding in actionscript. I know this isn't very advanced, but hopefully it will
help someone else trying to achieve a similar effect. I've left out some of
the logic code, but you'll get the idea.
var items:Array = (data as LineSeriesSegment).items;
for (var i:int = 0; i < items.length; i++)
{
// get the graphics object
var g:Graphics = graphics;
if (isWeekend)
{
// use weekend lineStyle
g.lineStyle(3, 0x990000, 1);
}
else
{
// use the weekday lineStyle
g.lineStyle(2, 0xF2F2F2, 1);
}
// move to the starting point if we are at the
first item
if (i==0)
g.moveTo(thisItem.x, thisItem.y);
// draw if we are not the last item
if (!lastItem)
{
g.lineTo(nextItem.x, nextItem.y);
}
}
