87 lines
2.1 KiB
Python
87 lines
2.1 KiB
Python
import random
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from collections import namedtuple
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from enum import Enum, auto
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from typing import Set
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from math import cos, sin, sqrt, pi
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import matplotlib.pyplot as plt
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import numpy as np
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Point = namedtuple('Point', 'x y')
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Vector = namedtuple('Vector', 'x y')
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def gen_point(lower: int = 0, upper: int = 10) -> Point:
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a = random.uniform(lower, upper)
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b = random.uniform(lower, upper)
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#x_i = random.uniform(lower, upper)
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#p_i = Point(x_i, a * x_i + b)
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return Point(a, b)
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def display(points: Set[Point], hull: Set[Point]):
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x = [point.x for point in points]
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y = [point.y for point in points]
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h_x = [point.x for point in hull]
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h_y = [point.y for point in hull]
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plt.plot(h_x, h_y, 'ro')
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plt.scatter(x, y)
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plt.show()
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def gen_circular_point(lower : int = 0, upper: int = 10, radius: int = 5) -> Point:
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a = random.uniform(lower, upper) * 2 * pi
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r = radius * sqrt(random.uniform(lower, upper))
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x = r * cos(a)
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y = r * sin(a)
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return Point(x,y)
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def gen_weird_point(lower : int = 0, upper: int = 10) -> Point:
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x = random.uniform(lower, upper)
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y = x**2
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if x < 0:
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return Point(random.uniform(x, -x), y)
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return Point(random.uniform(-x, x), y)
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def gen_triangular_point(left : Point, right : Point, top : Point):
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r1 = random.uniform(0,1)
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r2 = random.uniform(0,1)
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return Point((1 - sqrt(r1)) * left.x + (sqrt(r1) * (1 - r2)) * right.x + (sqrt(r1) * r2) * top.x,
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(1 - sqrt(r1)) * left.y + (sqrt(r1) * (1 - r2)) * right.y + (sqrt(r1) * r2) * top.y)
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def display_line_only(points: Set[Point], slope: float, intercept: float, line_points: Set[Point]):
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x = [point.x for point in points]
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y = [point.y for point in points]
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plt.scatter(x, y)
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# Plot a line from slope and intercept
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axes = plt.gca()
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x_vals = np.array(axes.get_xlim())
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y_vals = intercept + slope * x_vals
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for point in line_points:
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plt.plot(point.x, point.y, 'go')
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plt.plot(x_vals, y_vals, '--')
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plt.show()
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class Side(Enum):
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ON = auto()
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ABOVE = auto()
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BELOW = auto()
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