transformations.affinity

Classes pertaining to affinities.

Classes

`Affinity`	An `Affinity` is any transformation composed of translations, rotations, uniform scales, stretches, shears, and reflections.
`Shear`	A `Shear` transformation shears the plane by a given `shear_factor`, `f`, preserving points on the line passing through `(0, 0, 0)` at a given `shear_angle`, `θ`.
`Stretch`	A `Stretch` transformation stretches the plane by a given `stretch_factor`, `f`, in the direction of line passing through `(0, 0, 0)` at a given `axis_angle`, `θ`.
`ManualAffinityUnit`	A `ManualAffinityUnit` is an `Affinity` unit that is implemented by specifying its matrix manually (used by the `compute()` method of `Affinity`).