Transforms a list of points by the inverse of a given transform.

graphics-ports

untransform-points `transform` `points` &optional `into` => `result`

transform⇩ |
A transform. |

points⇩ |
A list of pairs of real numbers. |

into⇩ |
A list. |

result |
A list of pairs of real numbers. |

The function `untransform-points`

transforms a list of alternating (`x` `y`) pairs in `points` by the effective inverse of `transform`. If `into` is supplied it must be a list the same length as `points`. If `into` is not supplied, a new list is returned.

*CAPI User Guide and Reference Manual (Macintosh version) - 01 Dec 2021 19:31:44*