PyGeo: a dynamic geometry toolkit

antipodals

point determined as antipodal (i.e.'opposite') to a given point in relation to a given geometric object

f AntiPodal() ...

factory function returns instance a class representing a point of space determined as antipodal (i.e.'opposite') to a given point in relation to a given geometric object

constructors:
AntiPodal (line, point )
point of line segment farthest from the given point of the line
AntiPodal (circle,point )
point on the given circle diametrically opposite to the given point
AntiPodal (sphere,point )
point on the given sphere diametrically opposite to the given point

See the source for more information.