Graphics, Figures & Tables ⇒ filling a region

[kent]

See the attached latex code where I would like to shade the region between the drawn parabola and ellipse.
Anybody knoes how to do this?
I have tried several combinations using \clip, \scope etc. without success.
Best regards,
Kent

[Stefan Kottwitz]

Hi Kent,

start, filling between ellipse and parabola2, adding:

Code: Select all

\begin{scope}
  \clip (S) ellipse (\a cm and \b cm);
  \filldraw[rotate=90,fill=yellow] (T) parabola (PP2) -- (9,0);
\end{scope}

Stefan

[kent]

Stefan, thanks for help!
May be I was not precise enough to define what I wanted to achieve.
I want the shading to be as indicated in black in the attached file.
Kent

[Stefan Kottwitz]

Ok, then this should do it:

Code: Select all

\begin{scope}
  \clip (S) ellipse (\a cm and \b cm);
  \filldraw[rotate=90,fill=yellow] (T) parabola (PP2) -- (-5,0);
  \filldraw[rotate=90,fill=yellow] (T) parabola (PP)  -- ( 5,0);
\end{scope}

ellipse.png (11.45 KiB) Viewed 2775 times

Stefan

[kent]

Thank you very much!
Your support is highly appreciated.