immutable points

[shimwell]

Currently the points are manipulated after input by the user. An end point the same as the first point is added and in some cases connection types are added.

The consequences are that if a variable called points are use to create a shape then the Shape.points will not be equal to the input points.

This limits the reuse of points across components.

A simple test was created that currently fails.

  def test_reuse_points(self):
      """Checks that points can be reused between shapes"""
      points = [
          (100, 0),
          (200, 0),
          (250, 50),
          (200, 100),
      ]
      test_shape = paramak.Shape(
          points=points
      )
      
      assert test_shape.points == [
          (100, 0),
          (200, 0),
          (250, 50),
          (200, 100),
      ]

The input points should not be changed and the a second processed_points can be used internally

[shimwell]

def test_reuse_points(self):
"""Checks that points can be reused between shapes"""
points = [
(100, 0),
(200, 0),
(250, 50),
(200, 100),
]
test_shape = paramak.RotateStraightShape(
points=points,
)

assert test_shape.points == [
(100, 0),
(200, 0),
(250, 50),
(200, 100),
]

[shimwell]

solved with #41