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'''
block.py
Copyright (C) 2020, 2021, 2022 Phillip A Carter
Copyright (C) 2020, 2021, 2022 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.
'''
'''
NOTE:
mirror is done externally by inverting convMirror and calling the preview function
flip is done externally by inverting convFlip and calling the preview function
'''
import os
import sys
from shutil import copy as COPY
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, fNgc, fTmp, columns, rows, cOffset, \
rOffset, xOffset, yOffset, angle, \
scale, rotation, convBlock, convMirror, convFlip, \
convMirrorToggle, convFlipToggle, g5xIndex, convUnits):
error = ''
msg1 = _('entry is invalid')
valid, columns = Conv.conv_is_int(columns)
if not valid:
msg0 = _('COLUMNS NUMBER')
error += '{} {}\n\n'.format(msg0, msg1)
valid, cOffset = Conv.conv_is_float(cOffset)
if not valid and cOffset:
msg0 = _('COLUMNS OFFSET')
error += '{} {}\n\n'.format(msg0, msg1)
valid, rows = Conv.conv_is_int(rows)
if not valid:
msg0 = _('ROWS NUMBER')
error += '{} {}\n\n'.format(msg0, msg1)
valid, rOffset = Conv.conv_is_float(rOffset)
if not valid and rOffset:
msg0 = _('ROWS OFFSET')
error += '{} {}\n\n'.format(msg0, msg1)
valid, xOffset = Conv.conv_is_float(xOffset)
if not valid and xOffset:
msg0 = _('X OFFSET')
error += '{} {}\n\n'.format(msg0, msg1)
valid, yOffset = Conv.conv_is_float(yOffset)
if not valid and yOffset:
msg0 = _('Y OFFSET')
error += '{} {}\n\n'.format(msg0, msg1)
valid, angle = Conv.conv_is_float(angle)
if not valid and angle:
msg0 = _('PATTERN ANGLE')
error += '{} {}\n\n'.format(msg0, msg1)
valid, scale = Conv.conv_is_float(scale)
if not valid:
msg0 = _('SHAPE SCALE')
error += '{} {}\n\n'.format(msg0, msg1)
valid, rotation = Conv.conv_is_float(rotation)
if not valid and rotation:
msg0 = _('SHAPE ROTATION')
error += '{} {}\n\n'.format(msg0, msg1)
if error:
return error
if columns <= 0:
msg = _('COLUMNS NUMBER cannot be zero')
error += '{}\n\n'.format(msg)
if rows <= 0:
msg = _('ROWS NUMBER cannot be zero')
error += '{}\n\n'.format(msg)
# if columns == 1 and rows == 1:
# msg = _('Either COLUMNS NUMBER or ROWS NUMBER must be greater then one')
# error += '{}\n\n'.format(msg)
if columns > 1 and not cOffset:
msg = _('COLUMNS OFFSET is required')
error += '{}\n\n'.format(msg)
if rows > 1 and not rOffset:
msg = _('ROWS OFFSET is required')
error += '{}\n\n'.format(msg)
if scale <=0:
msg = _('SCALE cannot be zero')
error += '{}\n\n'.format(msg)
if error:
return error
COPY(fNgc, fTmp)
inCode = open(fTmp, 'r')
outNgc = open(fNgc, 'w')
# edit existing parameters
if convBlock[0]:
indent = False
for line in inCode:
if line.startswith('#<array_x_offset>'):
line = '#<array_x_offset> = {}\n'.format(cOffset)
elif line.startswith('#<array_y_offset>'):
line = '#<array_y_offset> = {}\n'.format(rOffset)
elif line.startswith('#<array_columns>'):
line = '#<array_columns> = {}\n'.format(columns)
elif line.startswith('#<array_rows>'):
line = '#<array_rows> = {}\n'.format(rows)
elif line.startswith('#<origin_x_offset>'):
line = '#<origin_x_offset> = {}\n'.format(xOffset)
elif line.startswith('#<origin_y_offset>'):
line = '#<origin_y_offset> = {}\n'.format(yOffset)
elif line.startswith('#<array_angle>'):
line ='#<array_angle> = {}\n'.format(angle)
elif line.startswith('#<blk_scale>'):
line ='#<blk_scale> = {}\n'.format(scale)
elif line.startswith('#<shape_angle>'):
line ='#<shape_angle> = {}\n'.format(rotation)
elif line.startswith('#<shape_mirror>'):
line ='#<shape_mirror> = {}\n'.format(convMirror)
elif line.startswith('#<shape_flip>'):
line ='#<shape_flip> = {}\n'.format(convFlip)
elif '#<shape_mirror>' in line and (convMirrorToggle or convFlipToggle):
if 'g2' in line:
line = line.replace('g2', 'g3')
elif 'g3' in line:
line = line.replace('g3', 'g2')
outNgc.write('{}'.format(line))
# create new array
else:
xIndex = [5221,5241,5261,5281,5301,5321,5341,5361,5381][(g5xIndex - 1)]
outNgc.write(';conversational block\n\n')
# inputs
outNgc.write(';inputs\n')
outNgc.write('#<ucs_x_offset> = #{}\n'.format(xIndex))
outNgc.write('#<ucs_y_offset> = #{}\n'.format(xIndex + 1))
outNgc.write('#<ucs_r_offset> = #{}\n'.format(xIndex + 9))
outNgc.write('#<array_x_offset> = {}\n'.format(cOffset))
outNgc.write('#<array_y_offset> = {}\n'.format(rOffset))
outNgc.write('#<array_columns> = {}\n'.format(columns))
outNgc.write('#<array_rows> = {}\n'.format(rows))
outNgc.write('#<origin_x_offset> = {}\n'.format(xOffset))
outNgc.write('#<origin_y_offset> = {}\n'.format(yOffset))
outNgc.write('#<array_angle> = {}\n'.format(angle))
outNgc.write('#<blk_scale> = {}\n'.format(scale))
outNgc.write('#<shape_angle> = {}\n'.format(rotation))
outNgc.write('#<shape_mirror> = {}\n'.format(convMirror))
outNgc.write('#<shape_flip> = {}\n\n'.format(convFlip))
# calculations
outNgc.write(';calculations\n')
outNgc.write('#<this_col> = 0\n')
outNgc.write('#<this_row> = 0\n')
outNgc.write('#<array_rot> = [#<array_angle> + #<ucs_r_offset>]\n')
outNgc.write('#<blk_x_offset> = [#<origin_x_offset> + [#<ucs_x_offset> * {}]]\n'.format(convUnits[0]))
outNgc.write('#<blk_y_offset> = [#<origin_y_offset> + [#<ucs_y_offset> * {}]]\n'.format(convUnits[0]))
outNgc.write('#<x_sin> = [[#<array_x_offset> * #<blk_scale>] * SIN[#<array_rot>]]\n')
outNgc.write('#<x_cos> = [[#<array_x_offset> * #<blk_scale>] * COS[#<array_rot>]]\n')
outNgc.write('#<y_sin> = [[#<array_y_offset> * #<blk_scale>] * SIN[#<array_rot>]]\n')
outNgc.write('#<y_cos> = [[#<array_y_offset> * #<blk_scale>] * COS[#<array_rot>]]\n\n')
# main loop
outNgc.write(';main loop\n')
outNgc.write('o<loop> while [#<this_row> LT #<array_rows>]\n')
outNgc.write(' #<shape_x_start> = [[#<this_col> * #<x_cos>] - [#<this_row> * #<y_sin>] + #<blk_x_offset>]\n')
outNgc.write(' #<shape_y_start> = [[#<this_row> * #<y_cos>] + [#<this_col> * #<x_sin>] + #<blk_y_offset>]\n')
outNgc.write(' #<blk_angle> = [#<shape_angle> + #<array_rot>]\n')
if convUnits[1]:
outNgc.write(' {}\n'.format(convUnits[1]))
outNgc.write(' G10 L2 P0 X#<shape_x_start> Y#<shape_y_start> R#<blk_angle>\n\n')
# the shape
started, ended = False, False
for line in inCode:
line = line.strip().lower()
# remove line numbers
if line.startswith('n'):
line = line[1:]
while line[0].isdigit() or line[0] == '.':
line = line[1:].lstrip()
if not line:
break
# remove leading 0's from G & M codes
elif (line.lower().startswith('g') or \
line.lower().startswith('m')) and \
len(line) > 2:
while line[1] == '0' and len(line) > 2:
if line[2].isdigit():
line = line[:1] + line[2:]
else:
break
# scale the shape
if len(line) and line[0] in 'gxyz':
started = True
rLine = scale_shape(line, convMirrorToggle, convFlipToggle)
if rLine is not None:
outNgc.write(' {}\n'.format(rLine))
else:
return
# loop counter
elif not ended and ('m2' in line or 'm30' in line or (line.startswith('%') and started)):
ended = True
outNgc.write('\n #<this_col> = [#<this_col> + 1]\n')
outNgc.write(' o<count> if [#<this_col> EQ #<array_columns>]\n')
outNgc.write(' #<this_col> = 0\n')
outNgc.write(' #<this_row> = [#<this_row> + 1]\n')
outNgc.write(' o<count> endif\n')
outNgc.write('o<loop> endwhile\n')
elif not line:
outNgc.write('\n')
elif ended and ('m2' in line or 'm30' in line or line.startswith('%')):
pass
else:
outNgc.write(' {}\n'.format(line))
# reset offsets to original
outNgc.write('\nG10 L2 P0 X[#<ucs_x_offset> * {0}] Y[#<ucs_y_offset> * {0}] R#<ucs_r_offset>\n'.format(convUnits[0]))
outNgc.write('\nM2\n')
inCode.close()
outNgc.close()
return False
def scale_shape(line, convMirrorToggle, convFlipToggle):
if line[0] == 'g' and (line[1] not in '0123' or (line[1] in '0123' and len(line) > 2 and line[2] in '0123456789')):
return '{}'.format(line)
newLine = ''
multiAxis = False
numParam = False
namParam = False
fWord = False
lastAxis = ''
offset = ''
while 1:
# remove spaces
if line[0] == ' ':
line = line[1:]
# if beginning of comment
if line[0] == '(' or line[0] == ';':
if multiAxis and not fWord:
if lastAxis == 'x':
newLine += '*#<blk_scale>*#<shape_mirror>]'
elif lastAxis == 'i':
newLine += '*#<blk_scale>*#<shape_mirror>]'
elif lastAxis == 'y':
newLine += '*#<blk_scale>*#<shape_flip>]'
elif lastAxis == 'j':
newLine += '*#<blk_scale>*#<shape_flip>]'
else:
newLine += '*#<blk_scale>]'
newLine += line
break
# if beginning of parameter
elif line[0] == 'p':
if not numParam and not namParam:
if multiAxis and not fWord:
if lastAxis == 'x':
newLine += '*#<blk_scale>*#<shape_mirror>]'
elif lastAxis == 'i':
newLine += '*#<blk_scale>*#<shape_mirror>]'
elif lastAxis == 'y':
newLine += '*#<blk_scale>*#<shape_flip>]'
elif lastAxis == 'j':
newLine += '*#<blk_scale>*#<shape_flip>]'
else:
newLine += '*#<blk_scale>]'
lastAxis = line[0]
newLine += line[0]
line = line[1:]
# if alpha character
elif line[0].isalpha():
if not numParam and not namParam:
if multiAxis and not fWord:
if lastAxis == 'x':
newLine += '*#<blk_scale>*#<shape_mirror>]'
elif lastAxis == 'i':
newLine += '*#<blk_scale>*#<shape_mirror>]'
elif lastAxis == 'y':
newLine += '*#<blk_scale>*#<shape_flip>]'
elif lastAxis == 'j':
newLine += '*#<blk_scale>*#<shape_flip>]'
else:
# elif lastAxis not in 'p':
newLine += '*#<blk_scale>]'
lastAxis = line[0]
if line[0] == 'f':
fWord = True
newLine += line[0]
line = line[1:]
# if beginning of parameter
elif line[0] == '#':
numParam = True
newLine += line[0]
line = line[1:]
# if parameter should be a named parameter
elif line[0] == '<' and numParam:
numParam = False
namParam = True
newLine += line[0]
line = line[1:]
#if end of numbered parameter
elif not line[0].isdigit() and numParam:
numParam = False
newLine += line[0]
line = line[1:]
# if end of named parameter
elif line[0] == '>' and namParam:
namParam = False
newLine += line[0]
line = line[1:]
#if last axis was x, y, z, i, j, or r
elif newLine[-1] in 'xyzijr' and not numParam and not namParam:
multiAxis = True
newLine += '[{}'.format(line[0])
line = line[1:]
# everything else
else:
newLine += line[0]
line = line[1:]
# empty line, must be finished
if not line:
if not fWord:
if lastAxis == 'x':
newLine += '*#<blk_scale>*#<shape_mirror>]'
elif lastAxis == 'i':
newLine += '*#<blk_scale>*#<shape_mirror>]'
elif lastAxis == 'y':
newLine += '*#<blk_scale>*#<shape_flip>]'
elif lastAxis == 'j':
newLine += '*#<blk_scale>*#<shape_flip>]'
elif lastAxis not in 'p':
newLine += '*#<blk_scale>]'
break
if '#<shape_mirror>' in newLine and (convMirrorToggle or convFlipToggle):
if 'g2' in newLine:
newLine = newLine.replace('g2', 'g3')
elif 'g3' in newLine:
newLine = newLine.replace('g3', 'g2')
return ('{}'.format(newLine))
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