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Commit 2b1cece0 authored by Oleg Dzhimiev's avatar Oleg Dzhimiev
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a wrapper for web server

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src/main/resources/escher_pattern.py 100644 → 100755
View file @ 2b1cece0
......@@ -3,7 +3,7 @@
'''
/**
* @file escher_pattern.py
* @brief escher pattern generator
* @brief wrapper for web
* @par <b>License</b>:
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
......@@ -20,304 +20,97 @@
*/
'''
import matplotlib.pyplot as plt
from matplotlib.backends.backend_pdf import PdfPages
from urllib.parse import urlparse, parse_qs
import numpy as np
from matplotlib.patches import Arc
from matplotlib.patches import Circle
from matplotlib.patches import Rectangle
from matplotlib.patches import Polygon
from matplotlib.patches import Wedge
from matplotlib.patches import PathPatch
import matplotlib as mpl
from matplotlib import collections
from matplotlib.path import Path
import copy
import math
import sys
import time
# this is needed for importing?
import os, sys
os.chdir(os.path.dirname(__file__))
sys.path.append(os.path.dirname(__file__))
# also add:
'''
requirements:
- matplotlib, version 3.0.3
- BUG?: matplotlib, version 2.0.2 draws a little padding around which is not desired
install:
/etc/apache2/conf-enabled/serve-cgi-bin.conf:
<Directory /var/www/html/pytest>
Options +ExecCGI
AddHandler wsgi-script .py
WSGIProcessGroup %{GLOBAL}
WSGIApplicationGroup %{GLOBAL}
Order deny,allow
Allow from all
</Directory>
- sudo pip3 install matplotlib
- sudo apt install python3-tk
'''
class Escher_Pattern:
# units are mms but coordinates are in pt to compare with php script
MM2PT = 72.0/25.4
opts_k = {'facecolor':'black','edgecolor':'r','linewidth':0}
opts_w = {'facecolor':'white','edgecolor':'r','linewidth':0}
opts_b = {'facecolor':'blue', 'edgecolor':'r','linewidth':0}
opts_r = {'facecolor':'red', 'edgecolor':'r','linewidth':0}
# init
def __init__(self,
width = 270, # width in units
height = 210, # height in units
lpm = 50, # lines per meter
escher = 2.0, # curvature coefficient
rotate = 5, # degrees
units = 'mm',
):
self.width = int(width*self.MM2PT)
self.height = int(height*self.MM2PT)
self.lpm = lpm
self.escher = escher
self.angle = rotate
self.units = units
self.basename = 'escher-pattern'
self.basename += '-ESCHER'+str(self.escher)
self.basename += '-LPM'+str(self.lpm)
self.basename += '-ROT'+str(self.angle)
self.basename += '-PAGE_WIDTH'+str(width)
self.basename += '-PAGE_HEIGHT'+str(height)
self.pdf_name = self.basename+".pdf"
plt.autoscale(tight=True)
plt.axis('off')
plt.margins(0.0)
#plt.rcParams["figure.figsize"] = [60,120]
self.fig, self.ax = plt.subplots()
self.fig.set_size_inches(self.width/72, self.height/72)
self.ax.get_xaxis().set_visible(False)
self.ax.get_yaxis().set_visible(False)
self.ax.set_aspect('equal')
self.ax.spines['top'].set_visible(False)
self.ax.spines['right'].set_visible(False)
self.ax.spines['left'].set_visible(False)
self.ax.spines['bottom'].set_visible(False)
self.ax.set_ylim([0,self.height])
self.ax.set_xlim([0,self.width])
self.ax.set_facecolor('white')
self.rotation = mpl.transforms.Affine2D().rotate_deg(-self.angle) + self.ax.transData
print("init done")
# generate and place a patch
def generate_cell(self,x,y,tpts,template,halfAngle,r,ba):
for k,v in enumerate(template):
# even-even black cell
vcp = copy.copy(v)
if (type(v)==Wedge):
vcp.set_center((tpts[k][0]+x,tpts[k][1]+y))
elif (type(v)==Rectangle):
vcp.set_xy((tpts[k][0]+x,tpts[k][1]+y))
self.ax.add_patch(vcp)
vcp.set_transform(self.rotation)
# do clipping
if (type(v)==Wedge):
sin0 = math.sin(math.radians(halfAngle))
cos0 = math.cos(math.radians(halfAngle))
if ba[k]==0:
w0 = r - r*cos0
h0 = 2*r*sin0
x0 = tpts[k][0] + r - w0
y0 = tpts[k][1] - h0/2
if ba[k]==180:
w0 = r - r*cos0
h0 = 2*r*sin0
x0 = tpts[k][0] - r
y0 = tpts[k][1] - h0/2
if ba[k]==270:
w0 = 2*r*sin0
h0 = r - r*cos0
x0 = tpts[k][0] - w0/2
y0 = tpts[k][1] - r
if ba[k]==90:
w0 = 2*r*sin0
h0 = r - r*cos0
x0 = tpts[k][0] - w0/2
y0 = tpts[k][1] + r - h0
# correction, so the shadow line from Rectange is not seen
if ba[k]==0:
x0 -= w0
w0 *= 2
if ba[k]==180:
w0 *= 2
if ba[k]==270:
h0 *= 2
if ba[k]==90:
y0 -= h0
h0 *= 2
cp = Rectangle((x0,y0),w0,h0,**self.opts_w, lw=0)
vcp2 = copy.copy(cp)
xy = vcp2.get_xy()
vcp2.set_xy((xy[0]+x,xy[1]+y))
path = vcp2.get_path()
transform = vcp2.get_transform()
path = transform.transform_path(path)
vcp2 = PathPatch(path, fc='none', ec='none', lw=0)
self.ax.add_patch(vcp2)
# rotate here
vcp2.set_transform(self.rotation)
vcp.set_clip_path(vcp2)
# generate the whole pattern
def generate(self):
side = 500/self.lpm*self.MM2PT
# escher pattern
if (self.escher>0):
# no rounding
Size = side
qSize = Size/4
hSize = Size/2
a = self.escher*(math.sqrt(2)-1.0)
r = (a*a+1)/(2*a)*qSize
r2 = r*r
h = math.sqrt(r2-qSize*qSize)
dc = 2*qSize-h
halfAngle = math.degrees(math.atan(qSize/h))
center = dc+r
ba = [
None,
0,
180,
270,
90,
180,
0,
90,
270
]
tpts = [
[center-hSize, center-hSize],
[center-Size+dc, center-qSize],
[center-dc, center+qSize],
[center-qSize, center+Size-dc],
[center+qSize, center+dc],
[center+Size-dc, center+qSize],
[center+dc, center-qSize],
[center+qSize, center-Size+dc],
[center-qSize, center-dc]
]
template = [
Rectangle( tpts[0], Size, Size, **self.opts_k),
Wedge( tpts[1], r, ba[1]-halfAngle, ba[1]+halfAngle, **self.opts_w),
Wedge( tpts[2], r, ba[2]-halfAngle, ba[2]+halfAngle, **self.opts_k),
Wedge( tpts[3], r, ba[3]-halfAngle, ba[3]+halfAngle, **self.opts_w),
Wedge( tpts[4], r, ba[4]-halfAngle, ba[4]+halfAngle, **self.opts_k),
Wedge( tpts[5], r, ba[5]-halfAngle, ba[5]+halfAngle, **self.opts_w),
Wedge( tpts[6], r, ba[6]-halfAngle, ba[6]+halfAngle, **self.opts_k),
Wedge( tpts[7], r, ba[7]-halfAngle, ba[7]+halfAngle, **self.opts_w),
Wedge( tpts[8], r, ba[8]-halfAngle, ba[8]+halfAngle, **self.opts_k)
]
# checker board
else:
halfAngle = 0
r = 0
ba = [
None
]
tpts = [
[0,0]
]
template = [
Rectangle(tpts[0],side,side, **self.opts_k)
]
# calc how much more is needed for the rotation
abs_angle_rad = math.radians(abs(self.angle))
extra_w = self.height*math.tan(abs_angle_rad) # + side
extra_h = self.width *math.tan(abs_angle_rad) # + side
# would like to pass (0,0)
extra_w = int(extra_w/(2*side)+1)*2*side
extra_h = int(extra_h/(2*side)+1)*2*side
a = np.arange(-extra_w, self.width +extra_w, 2*side)
b = np.arange(-extra_h, self.height+extra_h, 2*side)
for x, y in [(x,y) for x in a for y in b]:
self.generate_cell(x ,y ,tpts,template,halfAngle,r,ba)
self.generate_cell(x+side,y+side,tpts,template,halfAngle,r,ba)
# test
def test(self):
x = [0, 100, 0]
y = [0, 0, 100]
self.ax.fill(x, y)
circ = Circle((0,0),0.01,color="red")
#circ.set_transform(t_end)
self.ax.add_patch(circ)
circ = Circle((100,0),1,color="red")
#circ.set_transform(t_end)
self.ax.add_patch(circ)
circ = Circle((0,100),1,color="red")
#circ.set_transform(t_end)
self.ax.add_patch(circ)
circ = Circle((50,50),1,color="red")
#circ.set_transform(t_end)
self.ax.add_patch(circ)
# save function
def save(self):
pp = PdfPages(self.pdf_name)
self.fig.tight_layout(pad=0)
#plt.show()
self.fig.savefig(pp,format='pdf',bbox_inches='tight',pad_inches=0)
#self.fig.savefig(pp,format='pdf',pad_inches=0)
pp.close()
if __name__ == "__main__":
#ep = Escher_Pattern("test.pdf", escher=2.0, lpm=50, rotate=10)
#http://192.168.0.137/escher/escher_pattern.php?PAGE_WIDTH=1524&PAGE_HEIGHT=3048&LPM=2.705449885575893&ROTATE=14.036243467
#ep = Escher_Pattern(width= 1524, height= 3048, escher=0, lpm=2.705449885575893, rotate=10)
ep = Escher_Pattern(width= 1524, height= 3048, escher=2, lpm=2.705449885575893, rotate=14.036243467)
#ep = Escher_Pattern(width= 160, height= 320, escher=2, lpm=50, rotate=13)
ep.generate()
ep.save()
from escher_pattern_class import Escher_Pattern
# def application is a hardcoded keyword for WSGI ?!
def application(environ,start_response):
params = parse_qs(environ["QUERY_STRING"])
status = '200 OK'
lpm = 50
page_width = 270
page_height = 210
rotate = 5
escher = 2.0
tmp_dir = 'tmp'
try:
lpm = float(params['LPM'][0])
except KeyError:
pass
try:
page_width = float(params['PAGE_WIDTH'][0])
except KeyError:
pass
try:
page_height = float(params['PAGE_HEIGHT'][0])
except KeyError:
pass
try:
rotate = float(params['ROTATE'][0])
except KeyError:
pass
try:
escher = float(params['ESCHER'][0])
except KeyError:
pass
basename = 'escher-pattern'
basename += '-ESCHER'+str(escher)
basename += '-LPM'+str(lpm)
basename += '-ROT'+str(rotate)
basename += '-PAGE_WIDTH'+str(page_width)
basename += '-PAGE_HEIGHT'+str(page_height)
pdf_name = basename+".pdf"
ep = Escher_Pattern(width= page_width, height= page_height, escher=escher, lpm=lpm, rotate=rotate)
ep.generate()
ep.save()
with open(pdf_name,'rb') as f:
contents = f.read()
filesize = str(len(contents))
filesize = filesize.encode('utf-8')
response_header = [
('Content-Type','application/pdf'),
('Cache-Control', 'public, must-revalidate, max-age=0'),
('Pragma', 'public'),
('Expires', 'Sat, 26 Jul 1997 05:00:00 GMT'),
('Last-Modified', time.strftime("%a, %d %b %Y %H:%M:%S GMT", time.gmtime())),
('Content-Length', str(len(contents))),
('Content-Disposition', 'inline; filename='+pdf_name+';')
]
start_response(status,response_header)
return [contents]
src/main/resources/escher_pattern_class.py 0 → 100644
View file @ 2b1cece0
#!/usr/bin/env python3
'''
/**
* @file escher_pattern_class.py
* @brief escher pattern generator
* @par <b>License</b>:
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
'''
import matplotlib.pyplot as plt
from matplotlib.backends.backend_pdf import PdfPages
import numpy as np
from matplotlib.patches import Arc
from matplotlib.patches import Circle
from matplotlib.patches import Rectangle
from matplotlib.patches import Polygon
from matplotlib.patches import Wedge
from matplotlib.patches import PathPatch
import matplotlib as mpl
from matplotlib import collections
from matplotlib.path import Path
import copy
import math
import sys
'''
requirements:
- matplotlib, version 3.0.3
- BUG?: matplotlib, version 2.0.2 draws a little padding around which is not desired
install:
- sudo pip3 install matplotlib
- sudo apt install python3-tk
'''
class Escher_Pattern:
# units are mms but coordinates are in pt to compare with php script
MM2PT = 72.0/25.4
opts_k = {'facecolor':'black','edgecolor':'r','linewidth':0}
opts_w = {'facecolor':'white','edgecolor':'r','linewidth':0}
opts_b = {'facecolor':'blue', 'edgecolor':'r','linewidth':0}
opts_r = {'facecolor':'red', 'edgecolor':'r','linewidth':0}
# init
def __init__(self,
width = 270, # width in units
height = 210, # height in units
lpm = 50, # lines per meter
escher = 2.0, # curvature coefficient
rotate = 5, # degrees
units = 'mm',
):
self.width = int(width*self.MM2PT)
self.height = int(height*self.MM2PT)
self.lpm = lpm
self.escher = escher
self.angle = rotate
self.units = units
self.basename = 'escher-pattern'
self.basename += '-ESCHER'+str(self.escher)
self.basename += '-LPM'+str(self.lpm)
self.basename += '-ROT'+str(self.angle)
self.basename += '-PAGE_WIDTH'+str(width)
self.basename += '-PAGE_HEIGHT'+str(height)
self.pdf_name = self.basename+".pdf"
plt.autoscale(tight=True)
plt.axis('off')
plt.margins(0.0)
#plt.rcParams["figure.figsize"] = [60,120]
self.fig, self.ax = plt.subplots()
self.fig.set_size_inches(self.width/72, self.height/72)
self.ax.get_xaxis().set_visible(False)
self.ax.get_yaxis().set_visible(False)
self.ax.set_aspect('equal')
self.ax.spines['top'].set_visible(False)
self.ax.spines['right'].set_visible(False)
self.ax.spines['left'].set_visible(False)
self.ax.spines['bottom'].set_visible(False)
self.ax.set_ylim([0,self.height])
self.ax.set_xlim([0,self.width])
self.ax.set_facecolor('white')
self.rotation = mpl.transforms.Affine2D().rotate_deg(-self.angle) + self.ax.transData
#print("init done")
# generate and place a patch
def generate_cell(self,x,y,tpts,template,halfAngle,r,ba):
for k,v in enumerate(template):
# even-even black cell
vcp = copy.copy(v)
if (type(v)==Wedge):
vcp.set_center((tpts[k][0]+x,tpts[k][1]+y))
elif (type(v)==Rectangle):
vcp.set_xy((tpts[k][0]+x,tpts[k][1]+y))
self.ax.add_patch(vcp)
vcp.set_transform(self.rotation)
# do clipping
if (type(v)==Wedge):
sin0 = math.sin(math.radians(halfAngle))
cos0 = math.cos(math.radians(halfAngle))
if ba[k]==0:
w0 = r - r*cos0
h0 = 2*r*sin0
x0 = tpts[k][0] + r - w0
y0 = tpts[k][1] - h0/2
if ba[k]==180:
w0 = r - r*cos0
h0 = 2*r*sin0
x0 = tpts[k][0] - r
y0 = tpts[k][1] - h0/2
if ba[k]==270:
w0 = 2*r*sin0
h0 = r - r*cos0
x0 = tpts[k][0] - w0/2
y0 = tpts[k][1] - r
if ba[k]==90:
w0 = 2*r*sin0
h0 = r - r*cos0
x0 = tpts[k][0] - w0/2
y0 = tpts[k][1] + r - h0
# correction, so the shadow line from Rectange is not seen
if ba[k]==0:
x0 -= w0
w0 *= 2
if ba[k]==180:
w0 *= 2
if ba[k]==270:
h0 *= 2
if ba[k]==90:
y0 -= h0
h0 *= 2
cp = Rectangle((x0,y0),w0,h0,**self.opts_w, lw=0)
vcp2 = copy.copy(cp)
xy = vcp2.get_xy()
vcp2.set_xy((xy[0]+x,xy[1]+y))
path = vcp2.get_path()
transform = vcp2.get_transform()
path = transform.transform_path(path)
vcp2 = PathPatch(path, fc='none', ec='none', lw=0)
self.ax.add_patch(vcp2)
# rotate here
vcp2.set_transform(self.rotation)
vcp.set_clip_path(vcp2)
# generate the whole pattern
def generate(self):
side = 500/self.lpm*self.MM2PT
# escher pattern
if (self.escher>0):
# no rounding
Size = side
qSize = Size/4
hSize = Size/2
a = self.escher*(math.sqrt(2)-1.0)
r = (a*a+1)/(2*a)*qSize
r2 = r*r
h = math.sqrt(r2-qSize*qSize)
dc = 2*qSize-h
halfAngle = math.degrees(math.atan(qSize/h))
center = dc+r
ba = [
None,
0,
180,
270,
90,
180,
0,
90,
270
]
tpts = [
[center-hSize, center-hSize],
[center-Size+dc, center-qSize],
[center-dc, center+qSize],
[center-qSize, center+Size-dc],
[center+qSize, center+dc],
[center+Size-dc, center+qSize],
[center+dc, center-qSize],
[center+qSize, center-Size+dc],
[center-qSize, center-dc]
]
template = [
Rectangle( tpts[0], Size, Size, **self.opts_k),
Wedge( tpts[1], r, ba[1]-halfAngle, ba[1]+halfAngle, **self.opts_w),
Wedge( tpts[2], r, ba[2]-halfAngle, ba[2]+halfAngle, **self.opts_k),
Wedge( tpts[3], r, ba[3]-halfAngle, ba[3]+halfAngle, **self.opts_w),
Wedge( tpts[4], r, ba[4]-halfAngle, ba[4]+halfAngle, **self.opts_k),
Wedge( tpts[5], r, ba[5]-halfAngle, ba[5]+halfAngle, **self.opts_w),
Wedge( tpts[6], r, ba[6]-halfAngle, ba[6]+halfAngle, **self.opts_k),
Wedge( tpts[7], r, ba[7]-halfAngle, ba[7]+halfAngle, **self.opts_w),
Wedge( tpts[8], r, ba[8]-halfAngle, ba[8]+halfAngle, **self.opts_k)
]
# checker board
else:
halfAngle = 0
r = 0
ba = [
None
]
tpts = [
[0,0]
]
template = [
Rectangle(tpts[0],side,side, **self.opts_k)
]
# calc how much more is needed for the rotation
abs_angle_rad = math.radians(abs(self.angle))
extra_w = self.height*math.tan(abs_angle_rad) # + side
extra_h = self.width *math.tan(abs_angle_rad) # + side
# would like to pass (0,0)
extra_w = int(extra_w/(2*side)+1)*2*side
extra_h = int(extra_h/(2*side)+1)*2*side
a = np.arange(-extra_w, self.width +extra_w, 2*side)
b = np.arange(-extra_h, self.height+extra_h, 2*side)
for x, y in [(x,y) for x in a for y in b]:
self.generate_cell(x ,y ,tpts,template,halfAngle,r,ba)
self.generate_cell(x+side,y+side,tpts,template,halfAngle,r,ba)
# test
def test(self):
x = [0, 100, 0]
y = [0, 0, 100]
self.ax.fill(x, y)
circ = Circle((0,0),0.01,color="red")
#circ.set_transform(t_end)
self.ax.add_patch(circ)
circ = Circle((100,0),1,color="red")
#circ.set_transform(t_end)
self.ax.add_patch(circ)
circ = Circle((0,100),1,color="red")
#circ.set_transform(t_end)
self.ax.add_patch(circ)
circ = Circle((50,50),1,color="red")
#circ.set_transform(t_end)
self.ax.add_patch(circ)
# save function
def save(self):
pp = PdfPages(self.pdf_name)
self.fig.tight_layout(pad=0)
#plt.show()
self.fig.savefig(pp,format='pdf',bbox_inches='tight',pad_inches=0)
#self.fig.savefig(pp,format='pdf',pad_inches=0)
pp.close()
if __name__ == "__main__":
#ep = Escher_Pattern("test.pdf", escher=2.0, lpm=50, rotate=10)
#http://192.168.0.137/escher/escher_pattern.php?PAGE_WIDTH=1524&PAGE_HEIGHT=3048&LPM=2.705449885575893&ROTATE=14.036243467
#ep = Escher_Pattern(width= 1524, height= 3048, escher=0, lpm=2.705449885575893, rotate=10)
ep = Escher_Pattern(width= 1524, height= 3048, escher=2, lpm=2.705449885575893, rotate=14.036243467)
#ep = Escher_Pattern(width= 160, height= 320, escher=2, lpm=50, rotate=13)
ep.generate()
ep.save()
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