''' polygon.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. ''' 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, \ isCenter, xOffset, yOffset, \ kerfWidth, isExternal, \ sides, diameter, sAngle, \ inStyle, diaOrLen): 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, sides = Conv.conv_is_int(sides) if not valid and sides: msg0 = _('SIDES') error += '{} {}\n\n'.format(msg0, msg1) valid, diameter = Conv.conv_is_float(diameter) if not valid and diameter: error += '{} {}\n\n'.format(diaOrLen, msg1) valid, sAngle = Conv.conv_is_float(sAngle) if not valid and sAngle: 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 error: return error if sides < 3: msg = _('More than two SIDES required') error += '{}\n\n'.format(msg) if diameter == 0: msg = _('DIAMETER cannot be zero') error += '{}\n\n'.format(msg) if error: return error if inStyle == 0: # circumscribed radius = diameter / 2 elif inStyle == 1: # inscribed radius = (diameter / 2) / math.cos(math.radians(180 / sides)) else: # side length radius = diameter / (2 * math.sin(math.radians(180 / sides))) sAngle = math.radians(sAngle) ijOffset = radius * math.sin(math.radians(45)) # get start point if isCenter: xS = float(xOffset) yS = float(yOffset) else: xS = float(xOffset) + radius# * math.cos(math.radians(0)) yS = float(yOffset) + radius# * math.sin(math.radians(90)) leadInOffset = float(leadinLength) / (2 * math.pi * (90.0 / 360)) leadOutOffset = math.sin(math.radians(45)) * float(leadoutLength) # get all points pList = get_points(sides, sAngle, xS, yS, radius) # get offset required offset = get_offset([pList[2][0],pList[2][1]], [pList[1][0],pList[1][1]], [pList[0][0],pList[0][1]], kerfWidth) # get new points move = 0 if isCenter else offset if isExternal: pList = get_points(sides, sAngle, xS + move, yS + move, radius + offset) else: pList = get_points(sides, sAngle, xS - move, yS - move, radius - offset) # get center xCentre = (float(pList[0][0]) + float(pList[sides - 1][0])) / 2 yCentre = (float(pList[0][1]) + float(pList[sides - 1][1])) / 2 angle = math.atan2(float(pList[0][1]) - yCentre, float(pList[0][0]) - xCentre) right = math.radians(0) up = math.radians(90) left = math.radians(180) down = math.radians(270) if isExternal: dir = [down, right] else: dir = [up, left] 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 polygon {})\n'.format(sides)) 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 = xCentre + (leadInOffset * math.cos(angle + dir[0])) ylCentre = yCentre + (leadInOffset * math.sin(angle + dir[0])) xlStart = xlCentre + (leadInOffset * math.cos(angle + dir[1])) ylStart = ylCentre + (leadInOffset * math.sin(angle + 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(xCentre, yCentre, xlCentre - xlStart, ylCentre - ylStart)) else: outTmp.write('g0 x{:.6f} y{:.6f}\n'.format(xCentre, yCentre)) outTmp.write('m3 $0 s1\n') if isExternal: for i in range(sides, 0, -1): outTmp.write('g1 x{} y{}\n'.format(pList[i - 1][0], pList[i - 1][1])) else: for i in range(sides): outTmp.write('g1 x{} y{}\n'.format(pList[i][0], pList[i][1])) outTmp.write('g1 x{} y{}\n'.format(xCentre, yCentre)) if leadOutOffset > 0: if isExternal: dir = [down, left] else: dir = [up, right] xlCentre = xCentre + (leadOutOffset * math.cos(angle + dir[0])) ylCentre = yCentre + (leadOutOffset * math.sin(angle + dir[0])) xlEnd = xlCentre + (leadOutOffset * math.cos(angle + dir[1])) ylEnd = ylCentre + (leadOutOffset * math.sin(angle + dir[1])) outTmp.write('g3 x{:.6f} y{:.6f} i{:.6f} j{:.6f}\n'.format(xlEnd, ylEnd , xlCentre - xCentre, ylCentre - yCentre)) 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 pList = [] for i in range(sides): angle = sAngle + 2 * math.pi * i / sides x = xS + radius * math.cos(angle) y = yS + radius * math.sin(angle) pList.append(['{:.6f}'.format(x), '{:.6f}'.format(y)]) def get_points(sides, sAngle, xS, yS, radius): pList = [] for i in range(sides): angle = sAngle + 2 * math.pi * i / sides x = xS + radius * math.cos(angle) y = yS + radius * math.sin(angle) pList.append([round(x, 3), round(y, 3)]) return pList def get_offset(A, B, C, kerfWidth): Ax, Ay = A[0] - B[0], A[1] - B[1] Cx, Cy = C[0] - B[0], C[1] - B[1] a = math.atan2(Ay, Ax) c = math.atan2(Cy, Cx) if a < 0: a += math.pi * 2 if c < 0: c += math.pi * 2 ang = (math.pi * 2 + c - a) if a > c else (c - a) ang = math.radians(90) - (ang / 2) adj = (kerfWidth / 2) / math.sin(ang) ofs = math.tan(ang) * adj return ofs