Tangent line with point and ellipse

Replies to This Discussion

Permalink Reply by Daniel González Abalde on December 2, 2015 at 7:38am

Here you have a geometric solution.

Attachments:

• PointTangentEllipse.gh, 11 KB

Permalink Reply by Ethan Gross on December 2, 2015 at 12:47pm

Here is another possibility. - Daniel, I'm still trying to puzzle out your solution, which works in mysterious ways. Where does it come from? Are you translating algebra into geometry?

Attachments:

• ellipse tangent.gh, 11 KB

Permalink Reply by Daniel González Abalde on December 2, 2015 at 1:09pm

I used a method of technical drawing that I found on youtube, I was curious to know how to do it but not so much to know why it works X-). And focuses can be calculated with the Pythagorean theorem.

Permalink Reply by Ali-Haung on December 6, 2015 at 9:39pm

Thanks for help, But I wonder how to generate if I change to an irregular curve?

Permalink Reply by Ali-Haung on December 6, 2015 at 9:43pm

Here is the example

Attachments:

• l.3dm, 23 KB