巴恩斯利蕨 Python 剧本
Barnsley Fern Python script
我已经设法用下面的代码生成了一个相当不错的巴恩斯利蕨类植物,但有些地方不太对劲。 'stem' 有多余的行,我没能找到问题所在。谁能解决这个问题?
巴恩斯利蕨类植物尽力而为:
from PIL import Image
import random
import matplotlib.pyplot as plt
A=[]
mat=[[0.0,0.0,0.0,0.6,0.0,0.0,0.01],
[0.85,0.04,-0.04,0.85,0.0,1.6,0.85],
[0.2,-0.26,0.23,0.22,0.0,1.6,0.07],
[-0.15,0.28,0.26,0.24,0.0,0.44,0.07]]
x=0.0
y=0.0
for k in range(0,100000):
p=random.random()
if p <= mat[0][6]:
i=0
elif p <= mat[0][6] + mat[1][6]:
i=1
elif p <= mat[0][6] + mat[1][6] + mat[2][6]:
i=2
else:
i=3
x0 = x * mat[i][0] + y * mat[i][1] + mat[i][4]
y = x * mat[i][2] + y * mat[i][3] + mat[i][5]
x = x0
ptn=[x,y]
A.append(ptn)
plt.figure(figsize=(20,30))
plt.scatter( *zip(*A),marker='o', color='g',s=0.1)
plt.show()
矩阵中有错字:
mat=[[0.0,0.0,0.0,0.16,0.0,0.0,0.01],
[0.85,0.04,-0.04,0.85,0.0,1.6,0.85],
[0.2,-0.26,0.23,0.22,0.0,1.6,0.07],
[-0.15,0.28,0.26,0.24,0.0,0.44,0.07]]
这修复了 Grrr...
我已经设法用下面的代码生成了一个相当不错的巴恩斯利蕨类植物,但有些地方不太对劲。 'stem' 有多余的行,我没能找到问题所在。谁能解决这个问题? 巴恩斯利蕨类植物尽力而为:
from PIL import Image
import random
import matplotlib.pyplot as plt
A=[]
mat=[[0.0,0.0,0.0,0.6,0.0,0.0,0.01],
[0.85,0.04,-0.04,0.85,0.0,1.6,0.85],
[0.2,-0.26,0.23,0.22,0.0,1.6,0.07],
[-0.15,0.28,0.26,0.24,0.0,0.44,0.07]]
x=0.0
y=0.0
for k in range(0,100000):
p=random.random()
if p <= mat[0][6]:
i=0
elif p <= mat[0][6] + mat[1][6]:
i=1
elif p <= mat[0][6] + mat[1][6] + mat[2][6]:
i=2
else:
i=3
x0 = x * mat[i][0] + y * mat[i][1] + mat[i][4]
y = x * mat[i][2] + y * mat[i][3] + mat[i][5]
x = x0
ptn=[x,y]
A.append(ptn)
plt.figure(figsize=(20,30))
plt.scatter( *zip(*A),marker='o', color='g',s=0.1)
plt.show()
矩阵中有错字:
mat=[[0.0,0.0,0.0,0.16,0.0,0.0,0.01],
[0.85,0.04,-0.04,0.85,0.0,1.6,0.85],
[0.2,-0.26,0.23,0.22,0.0,1.6,0.07],
[-0.15,0.28,0.26,0.24,0.0,0.44,0.07]]
这修复了 Grrr...