ΘΕΜΑ: Δημιουργία - Επεξεργασία αρχείων dxf

# import library
from dxfwrite import DXFEngine as dxf
 
# create drawing
drawing = dxf.drawing('test.dxf')
 
# add line at the default layer
drawing.add(dxf.line((0, 0), (10, 0), color=7))
 
# create a new layer
drawing.add_layer('TEXTLAYER', color=2)
 
# add a new layer at the new line.
drawing.add(dxf.text('Test', insert=(0, 0.2), layer='TEXTLAYER')
 
# save drawing
drawing.save()

import sys
 
class writer:
	def __init__(self,name):
		try:
			self.filename=name+".dxf"
			self.dxffile=open(self.filename,'w')
		except:
			print "pydxf:init: Error opening dxf."
			sys.exit(-1)
		self.dxffile.write("0\n")
		self.dxffile.write("SECTION\n")
		self.dxffile.write("2\n")
		self.dxffile.write("ENTITIES\n")
	def point(self,layer,p):
		x,y,z=p
		self.dxffile.write("0\n")
		self.dxffile.write("POINT\n")
		self.dxffile.write("8\n")
		self.dxffile.write('%s\n'%layer)	
		self.dxffile.write("10\n")
		self.dxffile.write('%f\n'%x)	
		self.dxffile.write("20\n")
		self.dxffile.write('%f\n'%y)
		self.dxffile.write("30\n")
		self.dxffile.write('%f\n'%z)	
	def line(self,layer,p1,p2,thick):
		x1,y1,z1=p1
		x2,y2,z2=p2
		self.dxffile.write("0\n")
		self.dxffile.write("LINE\n")
		self.dxffile.write("8\n")
		self.dxffile.write('%s\n'%layer)	
		self.dxffile.write("10\n")
		self.dxffile.write('%f\n'%x1)	
		self.dxffile.write("20\n")
		self.dxffile.write('%f\n'%y1)
		self.dxffile.write("30\n")
		self.dxffile.write('%f\n'%z1)
		self.dxffile.write("11\n")
		self.dxffile.write('%f\n'%x2)	
		self.dxffile.write("21\n")
		self.dxffile.write('%f\n'%y2)
		self.dxffile.write("31\n")
		self.dxffile.write('%f\n'%z2)
		self.dxffile.write("39\n")
		self.dxffile.write('%f\n'%thick)
	def circle(self,layer,p,radius):
		x,y,z=p
		self.dxffile.write("0\n")
		self.dxffile.write("CIRCLE\n")
		self.dxffile.write("8\n")
		self.dxffile.write('%s\n'%layer)	
		self.dxffile.write("10\n")
		self.dxffile.write('%f\n'%x)	
		self.dxffile.write("20\n")
		self.dxffile.write('%f\n'%y)
		self.dxffile.write("30\n")
		self.dxffile.write('%f\n'%z)
		self.dxffile.write("40\n")
		self.dxffile.write('%f\n'%radius)
	def text(self,layer,p,size,s):
		x,y,z=p
		self.dxffile.write("0\n")
		self.dxffile.write("TEXT\n")
		self.dxffile.write("8\n")
		self.dxffile.write('%s\n'%layer)	
		self.dxffile.write("10\n")
		self.dxffile.write('%f\n'%x)	
		self.dxffile.write("20\n")
		self.dxffile.write('%f\n'%y)
		self.dxffile.write("30\n")
		self.dxffile.write('%f\n'%z)
		self.dxffile.write("40\n")
		self.dxffile.write('%f\n'%size)
		self.dxffile.write("50\n")
		self.dxffile.write('%f\n'%0.)
		self.dxffile.write("1\n")
		self.dxffile.write('%s\n'%s)
	def face(self,layer,p1,p2,p3,p4):
		x1,y1,z1=p1
		x2,y2,z2=p2
		x3,y3,z3=p3
		x4,y4,z4=p4
		self.dxffile.write("0\n")
		self.dxffile.write("3DFACE\n")
		self.dxffile.write("8\n")
		self.dxffile.write('%s\n'%layer)	
		self.dxffile.write("10\n")
		self.dxffile.write('%f\n'%x1)	
		self.dxffile.write("20\n")
		self.dxffile.write('%f\n'%y1)
		self.dxffile.write("30\n")
		self.dxffile.write('%f\n'%z1)
		self.dxffile.write("11\n")
		self.dxffile.write('%f\n'%x2)	
		self.dxffile.write("21\n")
		self.dxffile.write('%f\n'%y2)
		self.dxffile.write("31\n")
		self.dxffile.write('%f\n'%z2)
		self.dxffile.write("12\n")
		self.dxffile.write('%f\n'%x3)	
		self.dxffile.write("22\n")
		self.dxffile.write('%f\n'%y3)
		self.dxffile.write("32\n")
		self.dxffile.write('%f\n'%z3)
		self.dxffile.write("13\n")
		self.dxffile.write('%f\n'%x4)	
		self.dxffile.write("23\n")
		self.dxffile.write('%f\n'%y4)
		self.dxffile.write("33\n")
		self.dxffile.write('%f\n'%z4)
	def close(self):
		self.dxffile.write("0\n")
		self.dxffile.write("ENDSEC\n")
		self.dxffile.write("0\n")
		self.dxffile.write("EOF\n")
		self.dxffile.close()
 
# uncomment to test
# x=writer("test")
# x.line("lines", (0.,0.,0.), (1.,1.,0.), 0.)
# x.face("faces", (1.,1.,0.), (2.,1.,0.), (2.,2.,0.), (1.,2.,0.))
# x.point("nodes", (3.,3.,3.))
# x.circle("circs", (3.,3.,3.), 1.)
# x.text("texts", (3.,3.,3.),0.1,"c")
# print x.filename
# x.close()