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LaTeX-examples/tikz/center/tikz.py
Martin Thoma 6364e13a6a Add README.md and rendered image to 6 tikz examples
The examples were found by

```bash
$ find . -type d '!' -exec test -e "{}/README.md" ';' -print
```
2015-11-20 08:11:29 +01:00

43 lines
960 B
Python

#!/usr/bin/env python
# -*- coding: utf-8 -*-
from random import uniform
import random
n = 5
xMin, yMin = 0, 0
xMax, yMax = 5, 5
xSum = 0
ySum = 0
coordinates = []
random.seed(42)
for i in range(n):
x = uniform(xMin, xMax)
y = uniform(yMin, yMax)
xSum += x
ySum += y
coordinates.append((x, y))
center = (float(xSum) / n, float(ySum) / 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("}")