rewrote plot_to_svg
This commit is contained in:
Adam Mayer
parent
13ea89fa8d
commit
90cfe54a47
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@ -3,12 +3,6 @@ import sys
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import svgwrite
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import math
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d = svgwrite.Drawing(profile='tiny')
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def getnum(line):
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pass
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def coordlist(line,expected=-1):
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l = list(map(float,line.split(',')))
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if expected > -1:
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@ -21,92 +15,148 @@ pens = [
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svgwrite.rgb(0, 100, 0, '%'),
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svgwrite.rgb(0, 0, 100, '%') ]
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pennum = 0
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pos = (0.0,0.0)
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text_rotation = 0.0
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text_size = 1
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# "viewport"? part of the page to plot on
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vp = (0.0,0.0,2394,1759)
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# virtual size for viewport
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wd = (0.0,0.0,2394,1759)
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# Default W/H
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W = 2394
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H = 1759
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def tcoord(x, vpl, vph, wdl, wdh):
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vpw = vph-vpl
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wdw = wdh-wdl
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nx = vpw*(x/wdw)
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return nx + vpl
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class Plotter:
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def __init__(self):
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self.pennum = 0
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self.viewport = (0, 0, W, H)
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self.window = (0, 0, W, H)
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self.cur_g = None
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self.cur_d = None
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self.d = svgwrite.Drawing(profile='tiny')
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self.text_theta = 0
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self.text_size = 1
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self.pos = (0,0)
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def transform1(x):
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vpw = vp[2]-vp[0]
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wdw = wd[2]-wd[0]
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nx = vpw*(x/wdw)
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return nx
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def get_g(self):
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"Return a valid group for this viewport/window"
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if not self.cur_g:
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self.cur_g = self.d.g()
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(v,w) = (self.viewport,self.window)
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a = (v[2]-v[0])/(w[2]-w[0])
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d = (v[3]-v[1])/(w[3]-w[1])
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e = v[0] - w[0]*a
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f = v[1] - w[1]*d
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sys.stderr.write("GROUP a {} d {} e {} f {}\n".format(a,d,e,f))
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self.cur_g.matrix(a,0,0,d,e,f)
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return self.cur_g
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def transform(x,y):
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nx = tcoord(x,vp[0],vp[2],wd[0],wd[2])
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ny = tcoord(y,vp[1],vp[3],wd[1],wd[3])
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return nx, ny
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def finish_g(self):
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if self.cur_g:
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self.d.add(self.cur_g)
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self.cur_g = None
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for line in sys.stdin.readlines():
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line = line.strip()
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cmd = line[0:2]
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line = line[2:].strip()
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if cmd == 'MA':
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l=coordlist(line,2)
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pos=transform(l[0],l[1])
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elif cmd == 'VP': #viewport?
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l=coordlist(line,4)
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vp=(l[0],l[1],l[2],l[3])
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elif cmd == 'WD':
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l=coordlist(line,4)
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wd=(l[0],l[1],l[2],l[3])
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elif cmd == 'DA':
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l=coordlist(line)
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while len(l) > 0:
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nextp = transform(l[0],l[1])
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l = l[2:]
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d.add(d.line(pos,nextp,stroke=pens[pennum]))
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pos = nextp
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elif cmd == 'CA': #circle
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l=coordlist(line)
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r=transform1(l[0])
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p=transform(l[1],l[2])
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c=d.circle(center=p,r=r)
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def finish_path(self):
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if self.cur_d:
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path=self.d.path(
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d=self.cur_d,
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stroke=pens[self.pennum])
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path.fill(opacity=0)
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self.get_g().add(path)
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self.cur_d = None
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def add_to_path(self, addition):
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if self.cur_d:
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self.cur_d = self.cur_d + " " + addition
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else:
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self.cur_d = addition
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def invalidate_window(self):
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self.finish_path()
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self.finish_g()
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def vp(self, params):
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self.invalidate_window()
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l=coordlist(params,4)
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self.viewport=(l[0],l[1],l[2],l[3])
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def wd(self, params):
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self.invalidate_window()
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l=coordlist(params,4)
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self.window=(l[0],l[1],l[2],l[3])
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def ma(self, params):
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l=coordlist(params,2)
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self.add_to_path("M{} {}".format(l[0],l[1]))
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self.pos = (l[0],l[1])
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def mr(self, params):
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l=coordlist(params,2)
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self.add_to_path("m{} {}".format(l[0],l[1]))
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self.pos = (l[0],l[1])
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def da(self, params):
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l=coordlist(params)
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self.add_to_path("L{}".format(" ".join(map(str,l))))
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self.pos = (l[-2],l[-1])
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def dr(self, params):
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l=coordlist(params)
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self.add_to_path("l{}".format(" ".join(map(str,l))))
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self.pos = (l[-2],l[-1])
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def ca(self, params):
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self.finish_path()
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l=coordlist(params)
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r=l[0]
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if len(l) > 2:
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p=(l[1],l[2])
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else:
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p=self.pos
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c=self.d.circle(center=p,r=r)
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c.fill(opacity=0)
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c.stroke(color=pens[pennum],opacity=100,width=2)
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d.add(c)
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elif cmd == 'AC': #arc
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l=coordlist(line)
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r=transform1(l[0])
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p=transform(l[3],l[4])
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c.stroke(color=pens[self.pennum],opacity=100,width=2)
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self.get_g().add(c)
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def ac(self,params):
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l=coordlist(params)
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r=l[0]
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if len(l) > 3:
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p=(l[3],l[4])
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else:
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p=self.pos
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t2, t1 = math.radians(l[1]),math.radians(l[2])
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x1, y1 = p[0] + (r*math.cos(t1)), p[1] + (r*math.sin(t1))
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x2, y2 = p[0] + (r*math.cos(t2)), p[1] + (r*math.sin(t2))
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ds="M {} {} A {} {} 0 0 0 {} {}".format(x1,y1,r,r,x2,y2)
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path=d.path(
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d=ds,
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stroke=pens[pennum])
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path.fill(opacity=0)
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d.add(path)
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elif cmd == 'LR':
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text_rotation = float(line)
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elif cmd == 'LS':
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text_size = float(line)
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elif cmd == 'PS':
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pennum = int(line) - 1
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#print("Switching to pen {}".format(pennum))
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elif cmd == 'PL':
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t = d.text(line,insert=pos)
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t.rotate(text_rotation,center=pos)
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d.add(t)
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pass
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else:
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#print("Command {}".format(cmd))
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pass
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self.add_to_path(ds)
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d.write(sys.stdout)
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def lr(self,params):
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self.text_theta = float(params)
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def ls(self,params):
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self.text_size = float(params)
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def ps(self,params):
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self.pennum = int(params) - 1
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def pl(self,params):
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self.finish_path()
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t = self.d.text(params,insert=self.pos)
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t.rotate(self.text_theta,center=self.pos)
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t['font-size'] = self.text_size
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self.get_g().add(t)
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def write(self,out):
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self.invalidate_window()
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self.d.write(out)
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def process_cmd(self,command):
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cmd_code = command[0:2].lower()
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params = command[2:]
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try:
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getattr(self,cmd_code)(params)
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except AttributeError:
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sys.stderr.write("Unrecognized command code {}\n".format(cmd_code))
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p = Plotter()
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for line in sys.stdin.readlines():
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line = line.strip()
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p.process_cmd(line)
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p.write(sys.stdout)
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