Coxeter

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Added
~~~~~

- Circumsphere and insphere from center calculations for ConvexSpheropolyhedron.
- Form factors amplitudes for sphere, polygons, and polyhedra.
- Shape families associated with a DOI can be directly accessed via a dictionary.
- Expected abstract interface for shapes (both 2D and 3D) has expanded.
- Plotting polygons or polyhedra can automatically create matplotlib axes.
- Perimeter calculation for polygons.
- Area and perimeter setters for spheropolygons.

Changed
~~~~~~~

- Shape family API is now entirely based on class methods rather than a call operator.
- The parent ShapeFamily class is now part of the public API.
- Doctests are now run as part of pytest.
- Subpackages have been renamed: shape_classes is now shapes, and shape_families is now families.
- The common_families submodule of shape_families is now just common.

Fixed
~~~~~

- Volume calculation for ConvexSpheropolyhedron includes area of extruded faces in addition to vertices and edges.
- Documentation has been revised and edited.

Removed
~~~~~~~

- The symmetry.py module.
- The ft.py module.
- The symmetry.py module.
- The get_params method of TabulatedShapeFamily.
- The family_from_doi method (the underlying data dictionary is now directly exposed).

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Added
~~~~~

- Calculation of circumsphere from center for convex polyhedra.
- Simple name-based shape getter for damasceno SHAPES dictionary.
- Polygons moment of inertia calculation.
- Interoperability with the GSD shape specification.
- Shape families and stored data for well-known families.
- All shapes can be centered anywhere in 3D Euclidean space.
- Extensive style checking using black, isort, and various other flake8 plugins.
- Make Circle area settable.
- 3D shapes can be oriented by their principal axes.
- Make Sphere volume settable.

Changed
~~~~~~~

- Inertia tensors for polyhedra and moments of inertia for polygons are calculated in global coordinates rather than the body frame.
- Modified testing of convex hulls to generate points on ellipsoids to avoid degenerate simplices.
- All insphere, circumsphere, and bounding sphere calculations now return the appropriate classes instead of tuples.

Removed
~~~~~~~

- The common_shapes subpackage.

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Added
~~~~~

- Continuous integrated testing on CircleCI.
- New Polygon class with property-based API.
- New ConvexSpheropolygon class with property-based API.
- New Polyhedron class with property-based API and robust facet sorting and merging.
- New ConvexPolyhedron class with property-based API.
- New ConvexSpheropolyhedron class with property-based API.
- Ability to plot Polyhedra and Polygons.
- Can now check whether points lie inside a ConvexPolyhedron or ConvexSpheropolyhedron.
- Added documentation.
- New Ellipsoid class with property-based API.
- New Sphere class with property-based API.
- New Ellipse class with property-based API.
- New Circle class with property-based API.
- Added insphere from center calculation for convex polyhedra.
- New ConvexPolygon class.
- Documentation is hosted on ReadTheDocs.

Changed
~~~~~~~

- Moved core shape classes from euclid.FreudShape into top-level package namespace.
- Moved common shape definitions into common_shapes subpackage.
- Shapes from Damasceno science 2012 paper are now stored in a JSON file that is loaded in the damasceno module.

Fixed
~~~~~

- Formatting now properly follows PEP8.

Removed
~~~~~~~

- Various unused or redundant functions in the utils module.
- The quaternion_tools module (uses rowan for quaternion math instead).
- The shapelib module.
- Old polygon.py and polyhedron.py modules, which contained old implementations of various poly\* and spheropoly\* classes.

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- Initial version of code base.