Loading Dockerfile 0 → 100644 +17 −0 Original line number Original line Diff line number Diff line FROM python:alpine3.9 EXPOSE 5000 COPY . /app WORKDIR /app RUN apk add --no-cache libgfortran build-base libstdc++ \ libpng libpng-dev \ freetype freetype-dev && \ # Install Python dependencies pip3 install -v --no-cache-dir flask==1.0.2 matplotlib==3.0.3 && \ # Cleanup apk del --purge build-base libgfortran libpng-dev freetype-dev && \ rm -vrf /var/cache/apk/* CMD python ./index.py escher_pattern.py 0 → 100644 +323 −0 Original line number Original line Diff line number Diff line #!/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() index.py 0 → 100644 +67 −0 Original line number Original line Diff line number Diff line from flask import Flask from flask import request import flask import os import time from escher_pattern import Escher_Pattern app = Flask(__name__) @app.route("/") def generate_pattern(): # defaults params = { 'LPM': 50, 'PAGE_WIDTH': 270, 'PAGE_HEIGHT': 210, 'ROTATE': 5, 'ESCHER': 2 } for k,v in params.items(): rq_param = request.args.get(k) if rq_param!=None: params[k] = float(rq_param) basename = 'escher-pattern' basename += '-ESCHER'+str(params['ESCHER']) basename += '-LPM'+str(params['LPM']) basename += '-ROT'+str(params['ROTATE']) basename += '-PAGE_WIDTH'+str(params['PAGE_WIDTH']) basename += '-PAGE_HEIGHT'+str(params['PAGE_HEIGHT']) pdf_name = basename+".pdf" ep = Escher_Pattern( width = params['PAGE_WIDTH'], height = params['PAGE_HEIGHT'], escher = params['ESCHER'], lpm = params['LPM'], rotate = params['ROTATE']) ep.generate() ep.save() with open(pdf_name,'rb') as f: contents = f.read() os.remove(pdf_name) filesize = str(len(contents)) filesize = filesize.encode('utf-8') resp = flask.Response(contents) resp.headers['Content-Type'] = 'application/pdf' resp.headers['Cache-Control'] = 'public, must-revalidate, max-age=0' resp.headers['Pragma'] = 'public' resp.headers['Expires'] = 'Sat, 26 Jul 1997 05:00:00 GMT' resp.headers['Last-Modified'] = time.strftime("%a, %d %b %Y %H:%M:%S GMT", time.gmtime()) resp.headers['Content-Length'] = str(len(contents)) resp.headers['Content-Disposition'] = 'inline; filename='+pdf_name+';' return resp if __name__ == "__main__": app.run(host="0.0.0.0", port=int("5000"), debug=True) Loading
Dockerfile 0 → 100644 +17 −0 Original line number Original line Diff line number Diff line FROM python:alpine3.9 EXPOSE 5000 COPY . /app WORKDIR /app RUN apk add --no-cache libgfortran build-base libstdc++ \ libpng libpng-dev \ freetype freetype-dev && \ # Install Python dependencies pip3 install -v --no-cache-dir flask==1.0.2 matplotlib==3.0.3 && \ # Cleanup apk del --purge build-base libgfortran libpng-dev freetype-dev && \ rm -vrf /var/cache/apk/* CMD python ./index.py
escher_pattern.py 0 → 100644 +323 −0 Original line number Original line Diff line number Diff line #!/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()
index.py 0 → 100644 +67 −0 Original line number Original line Diff line number Diff line from flask import Flask from flask import request import flask import os import time from escher_pattern import Escher_Pattern app = Flask(__name__) @app.route("/") def generate_pattern(): # defaults params = { 'LPM': 50, 'PAGE_WIDTH': 270, 'PAGE_HEIGHT': 210, 'ROTATE': 5, 'ESCHER': 2 } for k,v in params.items(): rq_param = request.args.get(k) if rq_param!=None: params[k] = float(rq_param) basename = 'escher-pattern' basename += '-ESCHER'+str(params['ESCHER']) basename += '-LPM'+str(params['LPM']) basename += '-ROT'+str(params['ROTATE']) basename += '-PAGE_WIDTH'+str(params['PAGE_WIDTH']) basename += '-PAGE_HEIGHT'+str(params['PAGE_HEIGHT']) pdf_name = basename+".pdf" ep = Escher_Pattern( width = params['PAGE_WIDTH'], height = params['PAGE_HEIGHT'], escher = params['ESCHER'], lpm = params['LPM'], rotate = params['ROTATE']) ep.generate() ep.save() with open(pdf_name,'rb') as f: contents = f.read() os.remove(pdf_name) filesize = str(len(contents)) filesize = filesize.encode('utf-8') resp = flask.Response(contents) resp.headers['Content-Type'] = 'application/pdf' resp.headers['Cache-Control'] = 'public, must-revalidate, max-age=0' resp.headers['Pragma'] = 'public' resp.headers['Expires'] = 'Sat, 26 Jul 1997 05:00:00 GMT' resp.headers['Last-Modified'] = time.strftime("%a, %d %b %Y %H:%M:%S GMT", time.gmtime()) resp.headers['Content-Length'] = str(len(contents)) resp.headers['Content-Disposition'] = 'inline; filename='+pdf_name+';' return resp if __name__ == "__main__": app.run(host="0.0.0.0", port=int("5000"), debug=True)
