Not all graphics on web pages are for design only. A lot of sites used in business or financial reporting need to show dynamic information graphically, and because that information updates constantly, the graphs need to be drawn on the fly. In this weeks tutorial we will continue on with some more complex shapes – curves, ellipses and polygons. We’ll also take a look at some of the maths involved with drawing polygons. As the series progresses, this will lead up to a routine that will plot graphs on the fly from dynamic data.

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