Degree and coordinate conversion
================================

Sometimes working directly with coordinates in degrees is cumbersome.
For example, you have no way to calculate easily distance between two
points, or say "this coordinate 2 metres west".

These routines and objects try to remedy that:

.. autoclass:: geom3d.degrees.Coordinates
    :members:

.. autoclass:: geom3d.degrees.XYPoint
    :members:

.. autoclass:: geom3d.degrees.XYPointCollection
    :members:

Please note that error introduced by this transformation is the more
pronounced the closer you are to the Poles, so no flying over the Poles
for you!

.. autoclass:: geom3d.degrees.Planet

.. autoclass:: geom3d.degrees.Earth


Basic structures
================

Note that you first need to set a satisfying epsilon:

.. autofunction:: geom3d.set_epsilon


.. autoclass:: geom3d.Vector
    :members:

.. autoclass:: geom3d.Line
    :members:

.. autoclass:: geom3d.PointInLine
    :members:

.. autoclass:: geom3d.Path
    :members:

Polygons
--------

.. autoclass:: geom3d.polygons.Polygon2D
    :members:

.. autoclass:: geom3d.polygons.PointOnPolygon2D
    :members:

Note that PointOnPolygon2D will behave correctly when faced with calculating the vector towards the polygon
then such point occurs on the vertex. It will take the average of two segment's unit vectors into consideration in that
case.


More complex 3D structures
--------------------------

.. autoclass:: geom3d.meshes.Triangle
    :members: