1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
|
'''
triangle.py
Copyright (C) 2020, 2021, 2022, 2023, 2024 Phillip A Carter
Copyright (C) 2020, 2021, 2022, 2023, 2024 Gregory D Carl
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 2 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, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
'''
import os
import sys
import math
import gettext
for f in sys.path:
if '/lib/python' in f:
if '/usr' in f:
localeDir = 'usr/share/locale'
else:
localeDir = os.path.join('{}'.format(f.split('/lib')[0]),'share','locale')
break
gettext.install("linuxcnc", localedir=localeDir)
# Conv is the upstream calling module
def preview(Conv, fTmp, fNgc, fNgcBkp, \
matNumber, matName, \
preAmble, postAmble, \
leadinLength, leadoutLength, \
xOffset, yOffset, \
kerfWidth, isExternal, \
angA, angB, angC, sideA, sideB, sideC, angle):
error = ''
msg1 = _('entry is invalid')
valid, xOffset = Conv.conv_is_float(xOffset)
if not valid and xOffset:
msg0 = _('X ORIGIN')
error += '{} {}\n\n'.format(msg0, msg1)
valid, yOffset = Conv.conv_is_float(yOffset)
if not valid and yOffset:
msg0 = _('Y ORIGIN')
error += '{} {}\n\n'.format(msg0, msg1)
valid, leadinLength = Conv.conv_is_float(leadinLength)
if not valid and leadinLength:
msg0 = _('LEAD IN')
error += '{} {}\n\n'.format(msg0, msg1)
valid, leadoutLength = Conv.conv_is_float(leadoutLength)
if not valid and leadoutLength:
msg0 = _('LEAD OUT')
error += '{} {}\n\n'.format(msg0, msg1)
valid, A = Conv.conv_is_float(angA)
if not valid and angA:
msg0 = _('A ANGLE')
error += '{} {}\n\n'.format(msg0, msg1)
valid, B = Conv.conv_is_float(angB)
if not valid and angB:
msg0 = _('B ANGLE')
error += '{} {}\n\n'.format(msg0, msg1)
valid, C = Conv.conv_is_float(angC)
if not valid and angC:
msg0 = _('C ANGLE')
error += '{} {}\n\n'.format(msg0, msg1)
valid, a = Conv.conv_is_float(sideA)
if not valid and sideA:
msg0 = _('a LENGTH')
error += '{} {}\n\n'.format(msg0, msg1)
valid, b = Conv.conv_is_float(sideB)
if not valid and sideB:
msg0 = _('b LENGTH')
error += '{} {}\n\n'.format(msg0, msg1)
valid, c = Conv.conv_is_float(sideC)
if not valid and sideC:
msg0 = _('c LENGTH')
error += '{} {}\n\n'.format(msg0, msg1)
valid, angle = Conv.conv_is_float(angle)
if not valid and angle:
msg0 = _('ANGLE')
error += '{} {}\n\n'.format(msg0, msg1)
valid, kerfWidth = Conv.conv_is_float(kerfWidth)
if not valid:
msg = _('Invalid Kerf Width entry in material')
error += '{}\n\n'.format(msg)
if a and b and c:
if a + b <= c:
msg = _('c must be less than a+b')
error += '{}\n\n'.format(msg)
if a + c <= b:
msg = _('b must be less than a+c')
error += '{}\n\n'.format(msg)
if b + c <= a:
msg = _('a must be less than b+c')
error += '{}\n\n'.format(msg)
if A <= 0 and isinstance(A, float):
msg = _('A ANGLE cannot be zero or less')
error += '{}\n\n'.format(msg)
if B <= 0 and isinstance(B, float):
msg = _('B ANGLE cannot be zero or less')
error += '{}\n\n'.format(msg)
if C <= 0 and isinstance(C, float):
msg = _('C ANGLE cannot be zero or less')
error += '{}\n\n'.format(msg)
if A >= 180 and isinstance(A, float):
msg = _('A ANGLE cannot be 180 or more')
error += '{}\n\n'.format(msg)
if B >= 180 and isinstance(B, float):
msg = _('B ANGLE cannot be 180 or more')
error += '{}\n\n'.format(msg)
if C >= 180 and isinstance(C, float):
msg = _('C ANGLE cannot be 180 or more')
error += '{}\n\n'.format(msg)
if a <= 0 and isinstance(a, float):
msg = _('a LENGTH cannot be zero or less')
error += '{}\n\n'.format(msg)
if b <= 0 and isinstance(b, float):
msg = _('b LENGTH cannot be zero or less')
error += '{}\n\n'.format(msg)
if c <= 0 and isinstance(c, float):
msg = _('c LENGTH cannot be zero or less')
error += '{}\n\n'.format(msg)
if A and B and C:
if not a and not b and not c:
msg = _('"a" or "b" or "c" are required')
error += '{}\n\n'.format(msg)
if A + B + C != 180:
msg = _('"A" + "B" + "C" must equal 180')
error += '{}\n\n'.format(msg)
if error:
return error
angle = math.radians(angle)
A = math.radians(A)
B = math.radians(B)
C = math.radians(C)
leadInOffset = math.sin(math.radians(45)) * leadinLength
leadOutOffset = math.sin(math.radians(45)) * leadoutLength
if A and B and C:
if a:
b = a / math.sin(A) * math.sin(B)
c = a / math.sin(A) * math.sin(C)
elif b:
a = b / math.sin(B) * math.sin(A)
c = b / math.sin(B) * math.sin(C)
elif c:
a = c / math.sin(C) * math.sin(A)
b = c / math.sin(C) * math.sin(B)
elif a and b and c:
A = math.acos((b ** 2 + c ** 2 - a ** 2) / (2 * b * c))
B = math.acos((a ** 2 + c ** 2 - b ** 2) / (2 * a * c))
C = math.acos((a ** 2 + b ** 2 - c ** 2) / (2 * a * b))
elif a and b and C:
c = math.sqrt((a ** 2 + b ** 2) - 2 * a * b * math.cos(C))
A = math.acos((b ** 2 + c ** 2 - a ** 2) / (2 * b * c))
B = math.acos((a ** 2 + c ** 2 - b ** 2) / (2 * a * c))
elif a and B and c:
b = math.sqrt((a ** 2 + c ** 2) - 2 * a * c * math.cos(B))
A = math.acos((b ** 2 + c ** 2 - a ** 2) / (2 * b * c))
C = math.acos((a ** 2 + b ** 2 - c ** 2) / (2 * a * b))
elif A and b and c:
a = math.sqrt((b ** 2 + c ** 2) - 2 * b * c * math.cos(A))
B = math.acos((a ** 2 + c ** 2 - b ** 2) / (2 * a * c))
C = math.acos((a ** 2 + b ** 2 - c ** 2) / (2 * a * b))
else:
msg0 = 'MINIMUM REQUIREMENTS:\n'\
'In processing order are:\n\n'\
'1: "A" + "B" + "C" + ("a" or "b" or "c") \n\n'\
'2: "a" + "b" + "c"\n\n'\
'3: "a" + "b" + "C"\n\n'\
'4: "a" + "B" + "c"\n\n'\
'5: "A" + "b" + "c"\n'
error += '{}\n\n'.format(msg0)
return error
right = math.radians(0)
up = math.radians(90)
left = math.radians(180)
down = math.radians(270)
# get start point
BX = xOffset
BY = yOffset
CX = round(BX + a * math.cos(angle), 3)
CY = round(BY + a * math.sin(angle), 3)
Bx, By = get_offset_coordinates([CX,CY], [BX,BY], B, kerfWidth, isExternal)
BX = Bx + (BX - Bx) * 2
BY = By + (BY - By) * 2
# get remaining points
CX = round(BX + a * math.cos(angle), 3)
CY = round(BY + a * math.sin(angle), 3)
AX = round(BX + c * math.cos(angle + B), 3)
AY = round(BY + c * math.sin(angle + B), 3)
# get offset points
Ax, Ay = get_offset_coordinates([BX,BY], [AX,AY], A, kerfWidth, isExternal)
Bx, By = get_offset_coordinates([CX,CY], [BX,BY], B, kerfWidth, isExternal)
Cx, Cy = get_offset_coordinates([AX,AY], [CX,CY], C, kerfWidth, isExternal)
# get leadin/leadout point
hypotLength = math.sqrt((Ax - Cx) ** 2 + (Ay - Cy) ** 2)
if Ax < Cx:
hypotAngle = left - math.atan((Ay - Cy) / (Cx - Ax))
elif Ax > Cx:
hypotAngle = right - math.atan((Ay - Cy) / (Cx - Ax))
else:
hypotAngle = up
xS = Cx + (hypotLength / 2) * math.cos(hypotAngle)
yS = Cy + (hypotLength / 2) * math.sin(hypotAngle)
# set leadin direction
if isExternal:
if Ay >= By:
dir = [up, right]
else:
dir = [down, left]
else:
if Ay >= By:
dir = [down, left]
else:
dir = [up, right]
outTmp = open(fTmp, 'w')
outNgc = open(fNgc, 'w')
inWiz = open(fNgcBkp, 'r')
for line in inWiz:
if '(new conversational file)' in line:
if('\\n') in preAmble:
outNgc.write('(preamble)\n')
for l in preAmble.split('\\n'):
outNgc.write('{}\n'.format(l))
else:
outNgc.write('\n{} (preamble)\n'.format(preAmble))
break
elif '(postamble)' in line:
break
elif 'm2' in line.lower() or 'm30' in line.lower():
continue
outNgc.write(line)
outTmp.write('\n(conversational triangle)\n')
outTmp.write(';using material #{}: {}\n'.format(matNumber, matName))
outTmp.write('M190 P{}\n'.format(matNumber))
outTmp.write('M66 P3 L3 Q1\n')
outTmp.write('f#<_hal[plasmac.cut-feed-rate]>\n')
if leadInOffset > 0:
xlCentre = xS + (leadInOffset * math.cos(hypotAngle - dir[0]))
ylCentre = yS + (leadInOffset * math.sin(hypotAngle - dir[0]))
xlStart = xlCentre + (leadInOffset * math.cos(hypotAngle - dir[1]))
ylStart = ylCentre + (leadInOffset * math.sin(hypotAngle - dir[1]))
outTmp.write('g0 x{:.6f} y{:.6f}\n'.format(xlStart, ylStart))
outTmp.write('m3 $0 s1\n')
outTmp.write('g3 x{:.6f} y{:.6f} i{:.6f} j{:.6f}\n'.format(xS, yS , xlCentre - xlStart, ylCentre - ylStart))
else:
outTmp.write('g0 x{:.6f} y{:.6f}\n'.format(xS, yS))
outTmp.write('m3 $0 s1\n')
if isExternal:
outTmp.write('g1 x{:.6f} y{:.6f}\n'.format(Cx , Cy))
outTmp.write('g1 x{:.6f} y{:.6f}\n'.format(Bx , By))
outTmp.write('g1 x{:.6f} y{:.6f}\n'.format(Ax , Ay))
else:
outTmp.write('g1 x{:.6f} y{:.6f}\n'.format(Ax , Ay))
outTmp.write('g1 x{:.6f} y{:.6f}\n'.format(Bx , By))
outTmp.write('g1 x{:.6f} y{:.6f}\n'.format(Cx , Cy))
outTmp.write('g1 x{:.6f} y{:.6f}\n'.format(xS, yS))
# set leadout direction
if leadOutOffset > 0:
if isExternal:
if Ay >= By:
dir = [up, left]
else:
dir = [down, right]
else:
if Ay >= By:
dir = [down, right]
else:
dir = [up, left]
xlCentre = xS + (leadOutOffset * math.cos(hypotAngle - dir[0]))
ylCentre = yS + (leadOutOffset * math.sin(hypotAngle - dir[0]))
xlEnd = xlCentre + (leadOutOffset * math.cos(hypotAngle - dir[1]))
ylEnd = ylCentre + (leadOutOffset * math.sin(hypotAngle - dir[1]))
outTmp.write('g3 x{:.6f} y{:.6f} i{:.6f} j{:.6f}\n'.format(xlEnd, ylEnd , xlCentre - xS, ylCentre - yS))
outTmp.write('m5 $0\n')
outTmp.close()
outTmp = open(fTmp, 'r')
for line in outTmp:
outNgc.write(line)
outTmp.close()
if('\\n') in postAmble:
outNgc.write('(postamble)\n')
for l in postAmble.split('\\n'):
outNgc.write('{}\n'.format(l))
else:
outNgc.write('\n{} (postamble)\n'.format(postAmble))
outNgc.write('m2\n')
outNgc.close()
return False
def get_offset_coordinates(fromPoint, thisPoint, angle, kerfWidth, isExternal):
kOffset = kerfWidth / 2
inAng = math.atan2(thisPoint[1] - fromPoint[1], thisPoint[0] - fromPoint[0])
ang = math.radians(90) - (angle / 2)
offset = math.tan(ang) * kOffset
if isExternal:
x = round(thisPoint[0] + offset * math.cos(inAng), 3)
y = round(thisPoint[1] + offset * math.sin(inAng), 3)
x = round(x + kOffset * math.cos(inAng + math.radians(90)), 3)
y = round(y + kOffset * math.sin(inAng + math.radians(90)), 3)
else:
x = round(thisPoint[0] - offset * math.cos(inAng), 3)
y = round(thisPoint[1] - offset * math.sin(inAng), 3)
x = round(x + kOffset * math.cos(inAng + math.radians(-90)), 3)
y = round(y + kOffset * math.sin(inAng + math.radians(-90)), 3)
return x, y
|
