python绘制五彩正五边形_python绘制封闭多边形教程

数据格式：（polygon.txt) 里面含有2个多边形，一行是一个点

0.085, 0.834,

0.024, 0.744,

0, 0.63,

0.024, 0.516,

0.085, 0.427,

0.5, 0.02,

0.675, 0.191,

0.795, 0.071,

0.815, 0.052,

0.835, 0.032,

0.84, 0.026,

0.844, 0.022,

0.856, 0.012,

0.871, 0.005,

0.886, 0.001,

0.903, 0,

0.823, 0.061,

0.823, 0.062,

0.826, 0.061,

import pylab as py

import time

from pylab import *

from matplotlib.font_manager import FontProperties

import matplotlib.pyplot as plt

font = FontProperties(fname=r"c:\windows\fonts\simsun.ttc", size=14)

def readdata(ls):

l = ls.split(',')

if len(l)>2:

return [l[0],l[1]]

else:

return None

if "__main__"==__name__:

print(9)

file_obj=open('fanmaker.txt')

k=0

line=file_obj.readline()

polygon =[]

while line:

k+=1

px=[]

py=[]

while line:

row = readdata(line)

print (line)

px.append(row[0])

py.append(row[1])

line=file_obj.readline()

if line=='\n':

ps=[]

px.append(px[0])

py.append(py[0])

ps.append(px)

ps.append(py)

polygon.append(ps)

line=file_obj.readline()

break

x=np.array(polygon[0][0])

y=np.array(polygon[0][1])

## plt.fill(x,y,'b')

plt.plot(x,y,'b-', linewidth=2)

for i in range(len(polygon)-1):

x=np.array(polygon[i+1][0])

y=np.array(polygon[i+1][1])

## plt.fill(x,y,'b')

plt.plot(x,y,'r-', linewidth=2)

plt.hold(True)

## plt.show()

x1=[-0.5 ,1.5]

x2=[-0.5,-0.5]

x3=[1.5 ,-0.5]

x4=[1.5,1.5]

plt.plot(x1,x2,'-')

plt.plot(x2,x3,'-')

plt.plot(x3,x4,'-')

plt.plot(x4,x1,'-')

plt.axis([-0.5,1.5 ,-0.5,1.5])

plt.show()

# plt.axis('tight')

file_obj.close()

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