How to draw an ellipse

What I want to show is the following picture, showing the feeling of many ovals stacked together.

However, I can only draw an ellipse according to the ellipse formula!

Don't know what to do next,Like rotating an ellipse.

[James Tursa]

How are you generating the points for the ellipse that you know how to draw? Simply rotating those points properly will get you the result. E.g., with a rotation matrix or you could use complex arithmetic to get the same result.

Answer 1

[Vladimir Sovkov]

The code discussed at https://www.mathworks.com/matlabcentral/answers/497966-how-to-find-the-vertical-height-of-an-ellipse-y-axis-length-of-ellipse#answer_407691?s_tid=prof_contriblnk can probably help.