Maintainer | diagrams-discuss@googlegroups.com |
---|---|

Safe Haskell | None |

A type for *points* (as distinct from vectors).

- newtype Point v = P v
- origin :: AdditiveGroup v => Point v
- (*.) :: VectorSpace v => Scalar v -> Point v -> Point v

# Points

newtype Point v

`Point`

is a newtype wrapper around vectors used to represent
points, so we don't get them mixed up. The distinction between
vectors and points is important: translations affect points, but
leave vectors unchanged. Points are instances of the
`AffineSpace`

class from Data.AffineSpace.

P v |

Functor Point | |

Typeable1 Point | |

Eq v => Eq (Point v) | |

Data v => Data (Point v) | |

Ord v => Ord (Point v) | |

Read v => Read (Point v) | |

Show v => Show (Point v) | |

AdditiveGroup v => AffineSpace (Point v) | |

VectorSpace v => HasOrigin (Point v) | |

HasLinearMap v => Transformable (Point v) | |

(Ord (Scalar v), VectorSpace v) => Traced (Point v) | The trace of a single point is the empty trace, |

(OrderedField (Scalar v), InnerSpace v) => Enveloped (Point v) | |

Newtype (Point v) v | |

(~ * (Scalar v) s, ~ * (Scalar v') s', ~ * s s') => Wrapped (Point v -> v -> PosInf s) (Point v' -> v' -> PosInf s') (Trace v) (Trace v') | |

Wrapped (Point v -> m) (Point v' -> m') (Query v m) (Query v' m') |

origin :: AdditiveGroup v => Point v

The origin of the vector space `v`

.

(*.) :: VectorSpace v => Scalar v -> Point v -> Point v

Scale a point by a scalar.