initial commit

oldpy/cg5-class.py

@@ -0,0 +1,183 @@
+from __future__ import division
+import serial
+
+
+
+
+
+class Command:
+
+    def __init__(self, name, *args):
+        self.name = name # hpgl Command  name e.g. PU, PA,
+        self.args = args # list of Position args
+
+    @property
+    def x(self):
+        return self.args[0] \
+               if self.name in ("PA", "PD", "PR", "PU" ) and self.args else \
+               None # Only these Commads have args
+
+    @property
+    def y(self):
+        return self.args[1] \
+               if self.name in ("PA", "PD", "PR", "PU" ) and self.args else \
+               None
+
+    def __len__(self):
+        return len(str(self))
+    
+    def __str__(self):
+        return self.name + ",".join(str(arg) for arg in self.args) + ";"
+
+    def __mul__(self, factor):
+        if self.name not in ("PA", "PD", "PR", "PU" ) or not  self.args:
+            return self
+        if type(factor) == type(0) or type(factor) == type(0.0):
+            factor = (factor, factor)
+        return Command(self.name,
+                       int(self.x * factor[0]),
+                       int(self.y * factor[1]))
+
+        
+    def __add__(self, addend):
+        if self.name not in ("PA", "PD", "PR", "PU" ) or not  self.args:
+            return self
+        if type(addend) == type(0) or type(addend) == type(0.0):
+            addend = (addend, addend)
+        return Command(self.name,
+                       int(self.x + addend[0]),
+                       int(self.y + addend[1]))
+
+    def __sub__(self, addend):
+        if type(addend) == type(0) or type(addend) == type(0.0):
+            addend = (addend, addend)
+        return self + (-addend[0], -addend[1])
+    
+class Program:
+
+    def __init__(self, commands=[]):
+        self.commands = commands
+
+    def parsefile(self, filename):
+        with open(filename) as file:
+            self.parse( file.read())
+
+    def parse(self, code):
+        for command in code.strip().split(";")[:-1]:
+            name, args = command[:2], command[2:]
+            args = [int(arg) for arg in args.split(",")] if args else []
+            #print name , args
+            self.commands.append(Command(name, *args))
+        
+    def __str__(self):
+        return "".join(str(command) for command in self.commands)
+        
+
+    def __mul__(self, arg):
+        return Program([command * arg for command in self.commands])
+    
+    
+    def __add__(self, arg):
+        return Program([command + arg for command in self.commands])
+
+    def __sub__(self, arg):
+        return Program([command - arg for command in self.commands])
+    
+    def __len__(self):
+        return len(str(self))
+
+    @property
+    def xmax(self):
+        return max(command.x for command in self.commands if command.x)
+    @property
+    def xmin(self):
+        return min(command.x for command in self.commands if command.x) 
+    @property
+    def ymax(self):
+        return max(command.y for command in self.commands if command.y)
+    @property
+    def ymin(self):
+        return min(command.y for command in self.commands if command.y) 
+    @property
+    def center(self):
+        return (self.xmin+self.xmax)/2,(self.ymin+self.ymax)/2
+    @property
+    def size(self): return self.xmax-self.xmin , self.yax - self.ymin
+    
+    @property
+    def winsize(self): return self.xmax-self.xmin , self.ymax - self.ymin
+
+    def centralize(self):
+        return self-self.center
+        #arg= self.center
+        #return Program([command - arg for command in self.commands])
+    
+    def oob(self, pltr):
+        
+        return (self.xmax > pltr.xmax or self.xmin < pltr.xmin or self.ymin < pltr.ymin or self.ymax > pltr.ymax)
+
+    def full(self,pltr):
+        arg = min(pltr.winsize[0]/self.winsize[0],pltr.winsize[1]/self.winsize[1])
+        return Program([command * arg for command in self.commands])
+    
+     
+class Plotter:
+
+    def __init__(self):
+        try:
+            self.ser = serial.Serial('/dev/ttyUSB0', 9600)
+            self.ser.write('OW;') 
+            s = [] 
+            while True:
+                x = self.ser.read()
+                if x == "\x0d":
+                    break
+                s.append(x)
+            if not s:
+                print 'I/O Fehler ist der Plotter bereit' 
+            self.__boundaries = tuple(int(x) for x in "".join(s).split(","))
+            
+        except OSError:
+            self.__boundaries = -1000,-1000,1000,1000
+            
+            print "No such file or directory: '/dev/ttyUSB0'"
+
+        
+
+
+    @property
+    def xmin(self):
+        return self.__boundaries[0]
+
+    @property
+    def ymin(self):
+        return self.__boundaries[1]
+
+    @property
+    def xmax(self):
+        return self.__boundaries[2]
+
+    @property
+    def ymax(self):
+        return self.__boundaries[3]
+
+    @property
+    def center(self):
+        return (self.xmin + self.xmax)/2, (self.ymin + self.ymax)/2
+
+    def write(self,programm):
+         self.ser.write(str(programm))
+    @property
+    def winsize(self):
+        return self.xmax-self.xmin , self.ymax - self.ymin
+
+   
+plt=Plotter()
+p=Program()
+p.parsefile("kreis.hpgl" )
+
+
+print len(p)
+plt.write(p)
+
+