||last updated: 2004-06-09
The curve can be seen as a linear distortion of an ellipse.
It has to be distinguished from another egg-formed cubic, Newton's
The first form has been constructed by Fritz Hügelschäffer
using two circles as follows:
Given a circle C1 (the smaller one) formed by the points C (x1,
y1) with center B.
And given a circle C2 formed by the points D (x2,
y2) with center A.
Then the cubic egg (black curve) is formed by the points E(x2, y1),
assuming the points B, C and D are lying on a line.
Remark: the characters belong to the point in the left down corner of it.