Transforms a list of integer pairs representing distances by the inverse of a transform.

graphics-ports

untransform-distances `transform` `distances` => `result`

transform⇩ |
A transform. |

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

result |
A list of pairs of real numbers. |

The function `untransform-distances`

transforms a list of alternating (`dx` `dy`) pairs in `distances` by the effective inverse of `transform`. Transformed values are returned as a new list.

See graphics-state for details of how a transform is used.

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