Cocoa Control: Horizontal Graph View
I have been struggling for years trying to get NSRect to play nicely and draw a cool looking responsive graph in a Cocoa application. I was trying to create a controller that could be used with iOS and Mac OSX, but the two platforms had too many internal differences for one controller class to make sense. The discrepancies between the frameworks made it difficult to share code between the two platforms, forcing me to maintain separate implementations for each.