python examples - nested functions and classes

nested-functions.py

"""
Resources:
----------
1. Nested functions https://stackabuse.com/python-nested-functions/
2. Packing problem: https://en.wikipedia.org/wiki/Packing_problems
    - Answer on SO: https://stackoverflow.com/questions/7392143/python-implementations-of-packing-algorithm
"""

"""
Example #1: nested function
"""

# Given a point
point_x = rg.Point3D(...)

def modify_vertex(point):
    # Create the inner function
    def offset(distance):
        # ...and do something here
        return rg.Point3D(point + distance)
    return offset

point_a = modify_vertex(point_x)
point_b = modify_vertex(point_x)

point_a(100)
point_b(200)


"""
Example #2: Nested function with 2 parameters
"""

# Given a point in a list of points
point_n = point_list[i]

def origin(point_a):
    point_a.Z += 10
    # Create the inner function
    def triangulo(point_b, point_c):
        return rg.Triangulo(pontoA, pontoB, pontoC)
    return triangle


triangle = origin(point_n)
triangle(point_list[n - 1], point_list[n + 1])


"""
Example #3: Class creation
"""

class Wall(object):
    def __init__(self, width, height):
        self.width = width
        self.height = height

    def increase(self, length):
        self.width = self.width + length

room_wall = Wall(100, 200)
room_wall.increase(10)