The curve is constructed using the script [EUC_Scripts\EUC_Curves\Rhodonea.txt]. In this script the parameters a and n are declared as globals and can be controlled through the data-dialog, appearing by right-clicking on the curve and selecting the [Data] item.

The curve defined by the equation f(x,y) = 0, where f(x,y) = (x^2+y^2)^3 - 4*(a*x*y)^2. It is a special [Rhodonea] curve (n=2 in the above polar equation).

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