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Jeckyl wrote:
> its fairly easy to convert quadratic into cubic (every quadratic is also
> cubic) .. going the other way is quite tricky (you need several quadratics
> to approximate a cubic).
>
> from the SWF SDF docs:
>
>
> Converting between Quadratic and Cubic Bezier curves.
>
> Simply replace the single off-curve control point of the Quadratic Bezier
> curve with two new off-curve control points for the Cubic Bezier curve.
> Place each new off-curve control point along the line between one of the
> on-curve anchor points and the original off-curve control point. The new
> off-curve control points should be 2/3 of the way from the on-curve anchor
> point to the original off-curve control point.