Node:Performing Transformations on Ellipses, Next:Ellipse Operators, Previous:Ellipse Constructors and Setting Functions, Up:Ellipse Reference
Transform do_transform (const Transform& t, [bool check = false ])

Virtual function 
Performs a transformation on an Ellipse . The Points on
the Ellipse are multiplied by t.
Then, if check is true ,
is_elliptical() is called on the Ellipse .
If the transformation has caused it to
become nonelliptical, axis_h and axis_v are set to
INVALID_REAL , and a warning is issued to stderr .
center , focus0 , and focus1 are not set to
INVALID_POINT . They may may no longer really be
the center and foci of the (nonelliptical) Ellipse , but they may
have some use for the programmer and/or user.
If check is 