Parabola with Focus and Directrix

Hi all, today I want to share with you this geometric study.

It's a parabola with focus point and directrix as input, found with grafic method, in the gh file there are some other parabola mathematical studies

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    riccardo foschi

    Today I studied a method to draw a full parabola function with a mathematically correct graphic method
    As you can see there are not just the points like in my previous algorithm, but there is the entire curve,

    The curve is a grade 2 nurbs curve with 3 control points (each with weight=1), the mid point is located in the intersection of the tangents drawn from the start and from the end of the parabola itself.

    Hope to be useful.

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      Andrei Raducanu

      hey! just thought i should mention your definition came in handy for me, so thanks for uploading it!