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#!/usr/bin/env python
import numpy as np
import ezdxf
import random
class dxf_editor:
def __init__(self,path,dxf_file):
self.dwg=ezdxf.readfile(path+dxf_file)
self.msp=self.dwg.modelspace()
self.create_layer('Cut',5)
self.create_layer('Circuit',1)
self.create_layer('Label',3)
self.create_layer('Fold',4)
self.create_layer('Pin_temp',6)
self.layer_rearrange() ## reagrrange cut and fold lines to corresponding layers
self.remove_wheels() ##remove wheel drawings for this design, no need to call for other designs
self.find_pin()
isolength=2.6 #mm
self.draw_on_pin(isolength)
self.matrix_shape=(210,270)
self.read_dxf_as_matrix()
self.dwg.saveas(self.dxf_name)
# os.system("inkscape -f silhouette_ele.dxf -e silouette_ele.png")
# self.img=cv2.imread(path+self.img_name)
# print(self.img)
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def create_layer(self,layer_name,color):
if not layer_name in self.dwg.layers:
self.dwg.layers.new(name=layer_name,dxfattribs={'color':color})
def layer_rearrange(self):
# put fold lines to the new layer 'Fold'
# put cut lines to the new layer 'Cut
for e in self.msp.query('LINE'):
if e.dxf.color!=5:
e.dxf.layer='Fold'
else:
e.dxf.layer='Cut'
def find_pin(self):
tolerance=0.05 #mm
pincutsize=1 #mm
pin_edge_arr=np.array([[0,0],[0,0]]).reshape(1,2,2)
self.center_arr=np.array([[0,0]])
for e in self.msp.query('LINE[layer=="Cut"]'):
length= sqrt((e.dxf.start[0]-e.dxf.end[0])**2+(e.dxf.start[1]-e.dxf.end[1])**2)
if length > pincutsize-tolerance and length < pincutsize + tolerance:
e.dxf.layer='Pin_temp'
if e.dxf.start[1]==e.dxf.end[1]: ##this line is horizontal
pin_edge=np.array([e.dxf.start,e.dxf.end])[:,:2]
pin_edge_arr=np.concatenate((pin_edge_arr,pin_edge.reshape(1,2,2)),axis=0)
pin_edge_arr=pin_edge_arr[1:]
# print(pin_edge_arr)
for i in range(len(pin_edge_arr)):
for e in np.delete(pin_edge_arr,i,axis=0):
if pin_edge_arr[i][0,1]-e[0,1]==1.0:
center_x=pin_edge_arr[i][0,0]-0.5
center_y=pin_edge_arr[i][0,1]-0.5
center=np.array([center_x,center_y]).reshape(1,2)
self.center_arr=np.append(self.center_arr,center,axis=0)
self.center_arr=np.unique(self.center_arr,axis=0)
self.center_arr=self.center_arr[1:]
#no need to call this function for other design
for e in self.msp.query('Arc LINE[layer=="Cut"]'):
if e.dxf.start[0]>=179:
self.msp.delete_entity(e)
def draw_on_pin(self,fulllength): #isolation
iso=self.dwg.blocks.new(name='ISO_BLK')
isolength=fulllength/2
iso.add_line((-isolength,isolength),(isolength,isolength),dxfattribs={'linetype':'DASHDOT'})
iso.add_line((-isolength,-isolength),(isolength,-isolength),dxfattribs={'linetype':'DASHDOT'})
iso.add_line((-isolength,-isolength),(-isolength,isolength),dxfattribs={'linetype':'DASHDOT'})
iso.add_line((isolength,-isolength),(isolength,isolength),dxfattribs={'linetype':'DASHDOT'})
iso.add_line((-isolength,-trace_w/2),(-(isolength+5),-trace_w/2),dxfattribs={'linetype':'DASHDOT'})
iso.add_line((-isolength,trace_w/2),(-(isolength+5),trace_w/2),dxfattribs={'linetype':'DASHDOT'})
for center_point in self.center_arr:
self.msp.add_blockref('ISO_BLK',center_point,dxfattribs={'layer':'Circuit'})
def read_dxf_as_matrix(self):
"""unit: mm
accuracy issue expected atm (mm round up)
"""
for line in self.msp.query('LINE[layer!="Fold" & layer!="Label" & layer!="Pin_temp"]'):
start=np.rint(line.dxf.start)
end=np.rint(line.dxf.end)
i=int(start[0])
j=int(start[1])
#can draw horizontal or vertical lines only
if j==end[1]: #this line is a horizontal line
self.matrix[i,j]=0
while i!=end[0]:
if i<end[0]:
i+=1
else:
i-=1
self.matrix[i,j]=0
elif i==end[0]: #this line is a vertical line
self.matrix[i,j]=0
while j!=end[1]:
if j<end[1]:
j+=1
else:
j-=1
self.matrix[i,j]=0
# def main():
path='/home/jingyan/Documents/summer_intern_lemur/roco_electrical/'
dxf_file='graph-silhouette.dxf'
edit=dxf_editor(path,dxf_file)