''' circle.py Copyright (C) 2020 - 2024 Phillip A Carter Copyright (C) 2020 - 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(f'{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, isCenter, xOffset, yOffset, kerfWidth, isExternal, isOvercut, overCut, smallHoleDia, smallHoleSpeed, diameter, invalidLeads): error = '' msg1 = _('entry is invalid') valid, xOffset = Conv.conv_is_float(xOffset) if not valid and xOffset: msg0 = _('X ORIGIN') error += f'{msg0} {msg1}\n\n' valid, yOffset = Conv.conv_is_float(yOffset) if not valid and yOffset: msg0 = _('Y ORIGIN') error += f'{msg0} {msg1}\n\n' valid, leadinLength = Conv.conv_is_float(leadinLength) if not valid and leadinLength: msg0 = _('LEAD IN') error += f'{msg0} {msg1}\n\n' valid, leadoutLength = Conv.conv_is_float(leadoutLength) if not valid and leadoutLength: msg0 = _('LEAD OUT') error += f'{msg0} {msg1}\n\n' valid, diameter = Conv.conv_is_float(diameter) if not valid and diameter: msg0 = _('DIAMETER') error += f'{msg0} {msg1}\n\n' valid, overCut = Conv.conv_is_float(overCut) if not valid and overCut: msg0 = _('OC LENGTH') error += f'{msg0} {msg1}\n\n' valid, kerfWidth = Conv.conv_is_float(kerfWidth) if not valid: msg = _('Invalid Kerf Width entry in material') error += f'{msg}\n\n' if error: return error if diameter == 0: msg = _('DIAMETER cannot be zero') error += f'{msg}\n\n' if error: return error kOffset = kerfWidth / 2 radius = diameter / 2 angle = math.radians(45) leadInOffset = math.sin(angle) * leadinLength leadOutOffset = math.sin(math.radians(45)) * leadoutLength if leadInOffset > radius - kOffset: leadInOffset = radius - kOffset if isExternal: ijOffset = (radius + kOffset) * math.sin(angle) else: ijOffset = (radius - kOffset) * math.sin(angle) if isCenter: xC = xOffset yC = yOffset else: if isExternal: xC = xOffset + radius + kOffset yC = yOffset + radius + kOffset else: xC = xOffset + radius - kOffset yC = yOffset + radius - kOffset xS = xC - ijOffset yS = yC - ijOffset right = math.radians(0) up = math.radians(90) left = math.radians(180) down = math.radians(270) if isExternal: dir = [left, down] else: dir = [right, up] if diameter < smallHoleDia: sHole = True else: sHole = False outTmp = open(fTmp, 'w') outNgc = open(fNgc, 'w') inWiz = open(fNgcBkp, 'r') for line in inWiz: line = line.strip() if line and line[0] not in ';': if '(new conversational file)' in line: if('\\n') in preAmble: outNgc.write('(preamble)\n') for l in preAmble.split('\\n'): outNgc.write(f'{l}\n') else: outNgc.write(f'\n{preAmble} (preamble)\n') break elif '(postamble)' in line: break elif 'M2' in line.upper() or 'M02' in line.upper() or 'M30' in line.upper(): continue outNgc.write(f"{line}\n") outTmp.write('\n(conversational circle)\n') outTmp.write(f';using material #{matNumber}: {matName}\n') outTmp.write(f'M190 P{matNumber}\n') outTmp.write('M66 P3 L3 Q1\n') outTmp.write('F#<_hal[plasmac.cut-feed-rate]>\n') if leadInOffset: if (sHole and not isExternal) or invalidLeads == 2: xlStart = xS + leadInOffset * math.cos(angle) ylStart = yS + leadInOffset * math.sin(angle) else: xlcenter = xS + (leadInOffset * math.cos(angle + dir[0])) ylcenter = yS + (leadInOffset * math.sin(angle + dir[0])) xlStart = xlcenter + (leadInOffset * math.cos(angle + dir[1])) ylStart = ylcenter + (leadInOffset * math.sin(angle + dir[1])) outTmp.write(f'G00 X{xlStart:.6f} Y{ylStart:.6f}\n') outTmp.write('M03 $0 S1\n') if sHole: outTmp.write(f'M67 E3 Q{smallHoleSpeed} (reduce feed rate to 60%)\n') if (sHole and not isExternal) or invalidLeads == 2: outTmp.write(f'G01 X{xS:.6f} Y{yS:.6f}\n') else: outTmp.write(f'G03 X{xS:.6f} Y{yS:.6f} I{xlcenter - xlStart:.6f} J{ylcenter - ylStart:.6f}\n') else: outTmp.write(f'G00 X{xS:.6f} Y{yS:.6f}\n') outTmp.write('M3 $0 S1\n') if sHole: outTmp.write(f'M67 E3 Q{smallHoleSpeed} (reduce feed rate to 60%)\n') if isExternal: outTmp.write(f'G02 X{xS:.6f} Y{yS:.6f} I{ijOffset:.6f} J{ijOffset:.6f}\n') else: outTmp.write(f'G03 X{xS:.6f} Y{yS:.6f} I{ijOffset:.6f} J{ijOffset:.6f}\n') if leadOutOffset and not isOvercut and not (not isExternal and sHole) and not invalidLeads: if isExternal: dir = [left, up] else: dir = [right, down] xlcenter = xS + (leadOutOffset * math.cos(angle + dir[0])) ylcenter = yS + (leadOutOffset * math.sin(angle + dir[0])) xlEnd = xlcenter + (leadOutOffset * math.cos(angle + dir[1])) ylEnd = ylcenter + (leadOutOffset * math.sin(angle + dir[1])) outTmp.write(f'G03 X{xlEnd:.6f} Y{ylEnd:.6f} I{xlcenter - xS:.6f} J{ylcenter - yS:.6f}\n') torch = True if isOvercut and sHole and not isExternal: torch = False outTmp.write('M62 P3 (disable torch)\n') centerX = xS + ijOffset centerY = yS + ijOffset cosA = math.cos(overCut / radius) sinA = math.sin(overCut / radius) cosB = ((xS - centerX) / radius) sinB = ((yS - centerY) / radius) endX = centerX + radius * ((cosB * cosA) - (sinB * sinA)) endY = centerY + radius * ((sinB * cosA) + (cosB * sinA)) outTmp.write(f'G03 X{endX:.6f} Y{endY:.6f} I{ijOffset:.6f} J{ijOffset:.6f}\n') outTmp.write('M05 $0\n') if sHole: outTmp.write('M68 E3 Q0 (reset feed rate to 100%)\n') if not torch: torch = True outTmp.write('M65 P3 (enable torch)\n') outTmp.close() outTmp = open(fTmp, 'r') for line in outTmp: outNgc.write(line) outTmp.close() if('\\n') in postAmble: outNgc.write('\n(postamble)\n') for l in postAmble.split('\\n'): outNgc.write(f'{l}\n') else: outNgc.write(f'\n{postAmble} (postamble)\n') outNgc.write('M02\n') outNgc.close() return False