Parabola with Focus and Directrix

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Permalink Reply by riccardo foschi on November 10, 2015 at 11:44am

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.

Attachments:

• Parabola.gh, 42 KB
• Parabola.3dm, 25 KB

Permalink Reply by Simon Vorhammer on November 8, 2017 at 11:16am

Thanks for sharing, came in handy for me as well!

Permalink Reply by Andrei Raducanu on May 19, 2017 at 8:22am

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