| 1234567891011121314151617181920212223242526272829303132333435363738394041424344 |
- #!/usr/bin/env python
- # -*- coding: utf-8 -*-
- from random import uniform
- import random
- n = 5
- x_min, y_min = 0, 0
- x_max, y_max = 5, 5
- x_sum = 0
- y_sum = 0
- coordinates = []
- random.seed(42)
- for i in range(n):
- x = uniform(x_min, x_max)
- y = uniform(y_min, y_max)
- x_sum += x
- y_sum += y
- coordinates.append((x, y))
- center = (float(x_sum) / n, float(y_sum) / n)
- cx, cy = center
- point_coords = ""
- for p in coordinates:
- px, py = p
- new_p = "(%.2f,%.2f)," % (px, py)
- point_coords = new_p + point_coords
- delta_y = cy-py
- delta_x = cx-px
- length = (delta_y**2+delta_x**2)**0.5
- sin_alpha = delta_y/length
- cos_alpha = delta_x/length
- print("\draw[->] (%.2f,%.2f) -- (%.2f,%.2f);" %
- (px, py, px + cos_alpha*length*0.80, py + sin_alpha*length*0.80))
- print("\\node[circle,inner sep=1pt,fill] at (%.2f,%.2f) {};" % (cx, cy))
- print("\\foreach \point in {" + point_coords + "}{")
- print("\\node[dot] at \point {};")
- print("}")
|
