212 lines
7.7 KiB
Python
212 lines
7.7 KiB
Python
'''
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sector.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.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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xOffset, yOffset,
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kerfWidth, isExternal,
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radius, sAngle, 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, radius = Conv.conv_is_float(radius)
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if not valid and radius:
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msg0 = _('RADIUS')
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error += f'{msg0} {msg1}\n\n'
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valid, sAngle = Conv.conv_is_float(sAngle)
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if not valid and sAngle:
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msg0 = _('SEC ANGLE')
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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 radius == 0:
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msg = _('RADIUS cannot be zero')
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error += f'{msg}\n\n'
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if sAngle == 0:
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msg = _('SEC ANGLE cannot be zero')
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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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sAngle = math.radians(sAngle)
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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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# get origin
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xO = xOffset
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yO = yOffset
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# get bottom point
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xB = xO + radius * math.cos(angle)
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yB = yO + radius * math.sin(angle)
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# get offset origin
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x0, y0, rOffset = get_offset_coordinates([xB, yB], [xO, yO], sAngle, kerfWidth, isExternal)
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xO = x0 + (xO - x0) * 2
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yO = y0 + (yO - y0) * 2
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# get offset bottom point
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xB = xO + radius * math.cos(angle)
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yB = yO + radius * math.sin(angle)
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xO, yO, rOffset = get_offset_coordinates([xB, yB], [xO, yO], sAngle, kerfWidth, isExternal)
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# get new radius
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if isExternal:
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radius += rOffset + kerfWidth / 2
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else:
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radius -= rOffset + kerfWidth / 2
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# get leadin/leadout point
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xS = xO + (radius * 0.75) * math.cos(angle)
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yS = yO + (radius * 0.75) * math.sin(angle)
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# get new bottom point
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xB = xO + radius * math.cos(angle)
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yB = yO + radius * math.sin(angle)
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# get new top point
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xT = xO + radius * math.cos(angle + sAngle)
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yT = yO + radius * math.sin(angle + sAngle)
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# get directions
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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 isExternal:
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dir = [down, right, left, up]
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else:
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dir = [up, left, right, down]
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# get leadin and leadout points
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xIC = xS + (leadInOffset * math.cos(angle + dir[0]))
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yIC = yS + (leadInOffset * math.sin(angle + dir[0]))
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xIS = xIC + (leadInOffset * math.cos(angle + dir[1]))
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yIS = yIC + (leadInOffset * math.sin(angle + dir[1]))
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xOC = xS + (leadOutOffset * math.cos(angle + dir[0]))
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yOC = yS + (leadOutOffset * math.sin(angle + dir[0]))
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xOE = xOC + (leadOutOffset * math.cos(angle + dir[2]))
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yOE = yOC + (leadOutOffset * math.sin(angle + dir[2]))
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# setup files and write G-code
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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 sector)\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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outTmp.write(f'G00 X{xIS:.6f} Y{yIS:.6f}\n')
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outTmp.write('M03 $0 S1\n')
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if leadInOffset:
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outTmp.write(f'G03 X{xS:.6f} Y{yS:.6f} I{xIC - xIS:.6f} J{yIC - yIS:.6f}\n')
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if isExternal:
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outTmp.write(f'G01 X{xO:.6f} Y{yO:.6f}\n')
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outTmp.write(f'G01 X{xT:.6f} Y{yT:.6f}\n')
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outTmp.write(f'G02 X{xB:.6f} Y{yB:.6f} I{xO - xT:.6f} J{yO - yT:.6f}\n')
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else:
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outTmp.write(f'G01 X{xB:.6f} Y{yB:.6f}\n')
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outTmp.write(f'G03 X{xT:.6f} Y{yT:.6f} I{xO - xB:.6f} J{yO - yB:.6f}\n')
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outTmp.write(f'G01 X{xO:.6f} Y{yO:.6f}\n')
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outTmp.write(f'G01 X{xS:.6f} Y{yS:.6f}\n')
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if leadOutOffset:
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outTmp.write(f'G03 X{xOE:.6f} Y{yOE:.6f} I{xOC - xS:.6f} J{yOC - 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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def get_offset_coordinates(fromPoint, thisPoint, angle, kerfWidth, isExternal):
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kOffset = kerfWidth / 2
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inAng = math.atan2(thisPoint[1] - fromPoint[1], thisPoint[0] - fromPoint[0])
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ang = math.radians(90) - (angle / 2)
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offset = math.tan(ang) * kOffset
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if isExternal:
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x = round(thisPoint[0] + offset * math.cos(inAng), 3)
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y = round(thisPoint[1] + offset * math.sin(inAng), 3)
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x = round(x + kOffset * math.cos(inAng + math.radians(90)), 3)
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y = round(y + kOffset * math.sin(inAng + math.radians(90)), 3)
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else:
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x = round(thisPoint[0] - offset * math.cos(inAng), 3)
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y = round(thisPoint[1] - offset * math.sin(inAng), 3)
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x = round(x + kOffset * math.cos(inAng + math.radians(-90)), 3)
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y = round(y + kOffset * math.sin(inAng + math.radians(-90)), 3)
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return x, y, offset
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