Geometry Module
===============
The geometry module is used to obtain information about the points and vertices of a ployhedra.
.. py:class:: Points
This class represents points in space.
.. py:method:: isorigin(self)
Return ``True`` if a point is the origin.
.. py:method:: __eq__(self, other)
Compare two Points for equality.
.. py:method:: __add__(self, other)
Add a Point to a Vector and return the result as a Point.
.. py:method:: __sub__(self, other)
Return the difference between two Points as a Vector.
.. py:method:: aspolyhedon(self)
Return a Point as a polyhedron corresponding to the Point, assuming the Point has integer coordinates.
.. py:class:: Vector
This class represents displacements in space.
.. py:method:: __eq__(self, other)
Compare two Vectors for equality.
.. py:method:: __add__(self, other)
Add either a Point or Vector to a Vector. The resulting sum is returned as the same structure *other* is.
.. py:method:: __sub__(self, other)
Subtract a Point or Vector from a Vector. The resulting difference is returned in the same form as *other*.
.. py:method:: __mul__(self, other)
Multiply a Vector by a scalar value and returns the result as a Vector.
.. py:method:: __neg__(self)
Negate a Vector.
.. py:method:: norm(self)
Normalizes a Vector.
.. py:method:: isnull(self)
Tests whether a Vector is null.
.. py:method:: angle(self, other)
Retrieve the angle required to rotate the vector into the vector passed in argument. The result is an angle in radians, ranging between -pi and
pi.
.. py:method:: cross(self, other)
Calculate the cross product of two Vector3D structures. If the vectors are not tridimensional, a _____ error is raised.
.. py:method:: dot(self, other)
Calculate the dot product of two vectors.
.. py:method:: __trudiv__(self, other)
Divide the vector by the specified scalar and returns the result as a vector.