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Wang Dequan
210
lib/python/plasmac/slot.py
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210
lib/python/plasmac/slot.py
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'''
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slot.py
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Copyright (C) 2020 - 2024 Phillip A Carter
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Copyright (C) 2020 - 2024 Gregory D Carl
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This program is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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'''
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import os
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import sys
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import math
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import gettext
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for f in sys.path:
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if '/lib/python' in f:
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if '/usr' in f:
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localeDir = 'usr/share/locale'
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else:
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localeDir = os.path.join(f'{f.split("/lib")[0]}', 'share', 'locale')
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break
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gettext.install("linuxcnc", localedir=localeDir)
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# Conv is the upstream calling module
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def preview(Conv, fTmp, fNgc, fNgcBkp,
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matNumber, matName,
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preAmble, postAmble,
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leadinLength, leadoutLength,
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isCenter, xOffset, yOffset,
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kerfWidth, isExternal,
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length, width, angle):
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error = ''
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msg1 = _('entry is invalid')
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valid, xOffset = Conv.conv_is_float(xOffset)
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if not valid and xOffset:
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msg0 = _('X ORIGIN')
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error += f'{msg0} {msg1}\n\n'
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valid, yOffset = Conv.conv_is_float(yOffset)
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if not valid and yOffset:
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msg0 = _('Y ORIGIN')
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error += f'{msg0} {msg1}\n\n'
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valid, leadinLength = Conv.conv_is_float(leadinLength)
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if not valid and leadinLength:
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msg0 = _('LEAD IN')
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error += f'{msg0} {msg1}\n\n'
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valid, leadoutLength = Conv.conv_is_float(leadoutLength)
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if not valid and leadoutLength:
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msg0 = _('LEAD OUT')
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error += f'{msg0} {msg1}\n\n'
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valid, length = Conv.conv_is_float(length)
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if not valid and length:
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msg0 = _('LENGTH')
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error += f'{msg0} {msg1}\n\n'
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valid, width = Conv.conv_is_float(width)
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if not valid and width:
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msg0 = _('WIDTH')
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error += f'{msg0} {msg1}\n\n'
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valid, angle = Conv.conv_is_float(angle)
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if not valid and angle:
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msg0 = _('ANGLE')
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error += f'{msg0} {msg1}\n\n'
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valid, kerfWidth = Conv.conv_is_float(kerfWidth)
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if not valid:
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msg = _('Invalid Kerf Width entry in material')
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error += f'{msg}\n\n'
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if error:
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return error
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if length == 0:
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msg = _('LENGTH cannot be zero')
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error += f'{msg}\n\n'
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if width == 0:
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msg = _('WIDTH cannot be zero')
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error += f'{msg}\n\n'
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if width > length:
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msg = _('WIDTH cannot be greater than LENGTH')
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error += f'{msg}\n\n'
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if error:
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return error
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if isExternal:
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length += kerfWidth
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width += kerfWidth
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else:
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length -= kerfWidth
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width -= kerfWidth
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angle = math.radians(angle)
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leadInOffset = math.sin(math.radians(45)) * leadinLength
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leadOutOffset = math.sin(math.radians(45)) * leadoutLength
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radius = width / 2
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blLength = math.sqrt((length / 2) ** 2 + width ** 2)
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blAngle = math.atan(width / (length / 2))
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length = length - width
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right = math.radians(0)
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up = math.radians(90)
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left = math.radians(180)
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down = math.radians(270)
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if isCenter:
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xS = xOffset + (width / 2) * math.cos(angle + up)
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yS = yOffset + (width / 2) * math.sin(angle + up)
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else:
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xS = xOffset + blLength * math.cos(angle + right + blAngle)
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yS = yOffset + blLength * math.sin(angle + right + blAngle)
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if isExternal:
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dir = [up, left, right]
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else:
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dir = [down, right, left]
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outTmp = open(fTmp, 'w')
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outNgc = open(fNgc, 'w')
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inWiz = open(fNgcBkp, 'r')
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for line in inWiz:
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line = line.strip()
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if line and line[0] not in ';':
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if '(new conversational file)' in line:
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if('\\n') in preAmble:
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outNgc.write('(preamble)\n')
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for l in preAmble.split('\\n'):
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outNgc.write(f'{l}\n')
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else:
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outNgc.write(f'\n{preAmble} (preamble)\n')
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break
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elif '(postamble)' in line:
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break
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elif 'M2' in line.upper() or 'M02' in line.upper() or 'M30' in line.upper():
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continue
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outNgc.write(f"{line}\n")
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outTmp.write('\n(conversational slot)\n')
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outTmp.write(f';using material #{matNumber}: {matName}\n')
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outTmp.write(f'M190 P{matNumber}\n')
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outTmp.write('M66 P3 L3 Q1\n')
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outTmp.write('F#<_hal[plasmac.cut-feed-rate]>\n')
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if leadInOffset > 0:
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xlCentre = xS + (leadInOffset * math.cos(angle + dir[0]))
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ylCentre = yS + (leadInOffset * math.sin(angle + dir[0]))
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xlStart = xlCentre + (leadInOffset * math.cos(angle + dir[1]))
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ylStart = ylCentre + (leadInOffset * math.sin(angle + dir[1]))
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outTmp.write(f'G00 X{xlStart:.6f} Y{ylStart:.6f}\n')
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outTmp.write('M03 $0 S1\n')
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outTmp.write(f'G03 X{xS:.6f} Y{yS:.6f} I{xlCentre - xlStart:.6f} J{ylCentre - ylStart:.6f}\n')
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else:
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outTmp.write(f'G00 X{xS:.6f} Y{yS:.6f}\n')
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outTmp.write('M03 $0 S1\n')
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x1 = xS + (length / 2) * math.cos(angle + dir[2])
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y1 = yS + (length / 2) * math.sin(angle + dir[2])
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outTmp.write(f'G01 X{x1:.6f} Y{y1:.6f}\n')
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if isExternal:
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xrCentre = x1 + (radius * math.cos(angle + down))
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yrCentre = y1 + (radius * math.sin(angle + down))
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xrEnd = xrCentre + (radius * math.cos(angle + down))
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yrEnd = yrCentre + (radius * math.sin(angle + down))
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outTmp.write(f'G02 X{xrEnd:.6f} Y{yrEnd:.6f} I{xrCentre - x1:.6f} J{yrCentre - y1:.6f}\n')
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x2 = xrEnd + length * math.cos(angle + left)
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y2 = yrEnd + length * math.sin(angle + left)
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outTmp.write(f'G01 X{x2:.6f} Y{y2:.6f}\n')
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xrCentre = x2 + (radius * math.cos(angle + up))
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yrCentre = y2 + (radius * math.sin(angle + up))
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xrEnd = xrCentre + (radius * math.cos(angle + up))
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yrEnd = yrCentre + (radius * math.sin(angle + up))
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outTmp.write(f'G02 X{xrEnd:.6f} Y{yrEnd:.6f} I{xrCentre - x2:.6f} J{yrCentre - y2:.6f}\n')
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else:
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xrCentre = x1 + (radius * math.cos(angle + down))
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yrCentre = y1 + (radius * math.sin(angle + down))
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xrEnd = xrCentre + (radius * math.cos(angle + down))
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yrEnd = yrCentre + (radius * math.sin(angle + down))
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outTmp.write(f'G03 X{xrEnd:.6f} Y{yrEnd:.6f} I{xrCentre - x1:.6f} J{yrCentre - y1:.6f}\n')
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x2 = xrEnd + length * math.cos(angle + right)
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y2 = yrEnd + length * math.sin(angle + right)
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outTmp.write(f'G01 X{x2:.6f} Y{y2:.6f}\n')
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xrCentre = x2 + (radius * math.cos(angle + up))
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yrCentre = y2 + (radius * math.sin(angle + up))
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xrEnd = xrCentre + (radius * math.cos(angle + up))
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yrEnd = yrCentre + (radius * math.sin(angle + up))
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outTmp.write(f'G03 X{xrEnd:.6f} Y{yrEnd:.6f} I{xrCentre - x2:.6f} J{yrCentre - y2:.6f}\n')
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outTmp.write(f'G01 X{xS:.6f} Y{yS:.6f}\n')
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if leadOutOffset > 0:
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if isExternal:
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dir = [up, right]
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else:
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dir = [down, left]
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xlCentre = xS + (leadOutOffset * math.cos(angle + dir[0]))
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ylCentre = yS + (leadOutOffset * math.sin(angle + dir[0]))
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xlEnd = xlCentre + (leadOutOffset * math.cos(angle + dir[1]))
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ylEnd = ylCentre + (leadOutOffset * math.sin(angle + dir[1]))
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outTmp.write(f'G03 X{xlEnd:.6f} Y{ylEnd:.6f} I{xlCentre - xS:.6f} J{ylCentre - yS:.6f}\n')
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outTmp.write('M05 $0\n')
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outTmp.close()
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outTmp = open(fTmp, 'r')
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for line in outTmp:
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outNgc.write(line)
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outTmp.close()
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if('\\n') in postAmble:
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outNgc.write('\n(postamble)\n')
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for l in postAmble.split('\\n'):
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outNgc.write(f'{l}\n')
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else:
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outNgc.write(f'\n{postAmble} (postamble)\n')
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outNgc.write('M02\n')
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outNgc.close()
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return False
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