symmetry about the y-axis
Like all linear transformations that command is in 2 modes:
direct and matrix.
symy image
symy(0,y)image(id)inv
Ysymmetrizes image id en y normalised between 0 and 1.
symy obj
symy(,y,z)obj(id)
Y symmetrizes objet obj id
relative to the plane parallel to the xz plane through (x, y, z) (default origin).
symy var
symy(x,y,z)var("y")
Y symmetrizes objet variable x en y
relative to the plane parallel to the xz plane through (x, y, z) (default origin).