Posted by dxli on Mar 11, 2015; 11:55am
URL: https://forum.librecad.org/Isometric-Circles-tp5711165p5711174.html

the feature "Draw Ellipse Inscribed in a Quadrilateral" only works when there's a unique inscribed ellipse.

Therefore, it doesn't work for:

1, trapezoid, there's no solution in general;
2, rectangle, there are infinite number of solutions;

for case 2, we should implement a way to select a solution though.

earthcaretech wrote

Mike, thank you for this.

I followed steps 1 - 3 rigorously, selected the "Draw Ellipse Inscribed in a Quadrilateral" tool but could only select 3 lines, not the fourth.

Am I missing something? An ellipse appears after clicking on the third line, and the command line shows "Specify the fourth line" but it won't select.