https://bugs.documentfoundation.org/show_bug.cgi?id=173555

--- Comment #6 from [email protected] ---
Created attachment 208510
  --> https://bugs.documentfoundation.org/attachment.cgi?id=208510&action=edit
Parabola vs Cubic Bezier - incorrect

The Cubic Bezier has control points (0, 0), (1/3, 1/9), (2/3, 4/9), and (1, 1).
This is because they were warped. One notices that these control points lie on
the parabola y=x^2, because of how it was warped. It should be the points on
the curve, and not the control-points, that lie on this parabola. This is fixed
by finely subdividing the Bezier prior to applying the warp, so that the
warping done on the new points more closely approximates the true warp (which,
for perfect exactness, would require recomputing the infinity of points on the
curve - both unrealistic and unnecessary for "close-enough" approximation).

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