''' triangle.py Copyright (C) 2020, 2021, 2022, 2023, 2024 Phillip A Carter Copyright (C) 2020, 2021, 2022, 2023, 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('{}'.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, \ xOffset, yOffset, \ kerfWidth, isExternal, \ angA, angB, angC, sideA, sideB, sideC, angle): 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, A = Conv.conv_is_float(angA) if not valid and angA: msg0 = _('A ANGLE') error += '{} {}\n\n'.format(msg0, msg1) valid, B = Conv.conv_is_float(angB) if not valid and angB: msg0 = _('B ANGLE') error += '{} {}\n\n'.format(msg0, msg1) valid, C = Conv.conv_is_float(angC) if not valid and angC: msg0 = _('C ANGLE') error += '{} {}\n\n'.format(msg0, msg1) valid, a = Conv.conv_is_float(sideA) if not valid and sideA: msg0 = _('a LENGTH') error += '{} {}\n\n'.format(msg0, msg1) valid, b = Conv.conv_is_float(sideB) if not valid and sideB: msg0 = _('b LENGTH') error += '{} {}\n\n'.format(msg0, msg1) valid, c = Conv.conv_is_float(sideC) if not valid and sideC: msg0 = _('c LENGTH') error += '{} {}\n\n'.format(msg0, msg1) valid, angle = Conv.conv_is_float(angle) if not valid and angle: 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 a and b and c: if a + b <= c: msg = _('c must be less than a+b') error += '{}\n\n'.format(msg) if a + c <= b: msg = _('b must be less than a+c') error += '{}\n\n'.format(msg) if b + c <= a: msg = _('a must be less than b+c') error += '{}\n\n'.format(msg) if A <= 0 and isinstance(A, float): msg = _('A ANGLE cannot be zero or less') error += '{}\n\n'.format(msg) if B <= 0 and isinstance(B, float): msg = _('B ANGLE cannot be zero or less') error += '{}\n\n'.format(msg) if C <= 0 and isinstance(C, float): msg = _('C ANGLE cannot be zero or less') error += '{}\n\n'.format(msg) if A >= 180 and isinstance(A, float): msg = _('A ANGLE cannot be 180 or more') error += '{}\n\n'.format(msg) if B >= 180 and isinstance(B, float): msg = _('B ANGLE cannot be 180 or more') error += '{}\n\n'.format(msg) if C >= 180 and isinstance(C, float): msg = _('C ANGLE cannot be 180 or more') error += '{}\n\n'.format(msg) if a <= 0 and isinstance(a, float): msg = _('a LENGTH cannot be zero or less') error += '{}\n\n'.format(msg) if b <= 0 and isinstance(b, float): msg = _('b LENGTH cannot be zero or less') error += '{}\n\n'.format(msg) if c <= 0 and isinstance(c, float): msg = _('c LENGTH cannot be zero or less') error += '{}\n\n'.format(msg) if A and B and C: if not a and not b and not c: msg = _('"a" or "b" or "c" are required') error += '{}\n\n'.format(msg) if A + B + C != 180: msg = _('"A" + "B" + "C" must equal 180') error += '{}\n\n'.format(msg) if error: return error angle = math.radians(angle) A = math.radians(A) B = math.radians(B) C = math.radians(C) leadInOffset = math.sin(math.radians(45)) * leadinLength leadOutOffset = math.sin(math.radians(45)) * leadoutLength if A and B and C: if a: b = a / math.sin(A) * math.sin(B) c = a / math.sin(A) * math.sin(C) elif b: a = b / math.sin(B) * math.sin(A) c = b / math.sin(B) * math.sin(C) elif c: a = c / math.sin(C) * math.sin(A) b = c / math.sin(C) * math.sin(B) elif a and b and c: A = math.acos((b ** 2 + c ** 2 - a ** 2) / (2 * b * c)) B = math.acos((a ** 2 + c ** 2 - b ** 2) / (2 * a * c)) C = math.acos((a ** 2 + b ** 2 - c ** 2) / (2 * a * b)) elif a and b and C: c = math.sqrt((a ** 2 + b ** 2) - 2 * a * b * math.cos(C)) A = math.acos((b ** 2 + c ** 2 - a ** 2) / (2 * b * c)) B = math.acos((a ** 2 + c ** 2 - b ** 2) / (2 * a * c)) elif a and B and c: b = math.sqrt((a ** 2 + c ** 2) - 2 * a * c * math.cos(B)) A = math.acos((b ** 2 + c ** 2 - a ** 2) / (2 * b * c)) C = math.acos((a ** 2 + b ** 2 - c ** 2) / (2 * a * b)) elif A and b and c: a = math.sqrt((b ** 2 + c ** 2) - 2 * b * c * math.cos(A)) B = math.acos((a ** 2 + c ** 2 - b ** 2) / (2 * a * c)) C = math.acos((a ** 2 + b ** 2 - c ** 2) / (2 * a * b)) else: msg0 = 'MINIMUM REQUIREMENTS:\n'\ 'In processing order are:\n\n'\ '1: "A" + "B" + "C" + ("a" or "b" or "c") \n\n'\ '2: "a" + "b" + "c"\n\n'\ '3: "a" + "b" + "C"\n\n'\ '4: "a" + "B" + "c"\n\n'\ '5: "A" + "b" + "c"\n' error += '{}\n\n'.format(msg0) return error right = math.radians(0) up = math.radians(90) left = math.radians(180) down = math.radians(270) # get start point BX = xOffset BY = yOffset CX = round(BX + a * math.cos(angle), 3) CY = round(BY + a * math.sin(angle), 3) Bx, By = get_offset_coordinates([CX,CY], [BX,BY], B, kerfWidth, isExternal) BX = Bx + (BX - Bx) * 2 BY = By + (BY - By) * 2 # get remaining points CX = round(BX + a * math.cos(angle), 3) CY = round(BY + a * math.sin(angle), 3) AX = round(BX + c * math.cos(angle + B), 3) AY = round(BY + c * math.sin(angle + B), 3) # get offset points Ax, Ay = get_offset_coordinates([BX,BY], [AX,AY], A, kerfWidth, isExternal) Bx, By = get_offset_coordinates([CX,CY], [BX,BY], B, kerfWidth, isExternal) Cx, Cy = get_offset_coordinates([AX,AY], [CX,CY], C, kerfWidth, isExternal) # get leadin/leadout point hypotLength = math.sqrt((Ax - Cx) ** 2 + (Ay - Cy) ** 2) if Ax < Cx: hypotAngle = left - math.atan((Ay - Cy) / (Cx - Ax)) elif Ax > Cx: hypotAngle = right - math.atan((Ay - Cy) / (Cx - Ax)) else: hypotAngle = up xS = Cx + (hypotLength / 2) * math.cos(hypotAngle) yS = Cy + (hypotLength / 2) * math.sin(hypotAngle) # set leadin direction if isExternal: if Ay >= By: dir = [up, right] else: dir = [down, left] else: if Ay >= By: dir = [down, left] else: dir = [up, right] 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 triangle)\n') 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 = xS + (leadInOffset * math.cos(hypotAngle - dir[0])) ylCentre = yS + (leadInOffset * math.sin(hypotAngle - dir[0])) xlStart = xlCentre + (leadInOffset * math.cos(hypotAngle - dir[1])) ylStart = ylCentre + (leadInOffset * math.sin(hypotAngle - 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(xS, yS , xlCentre - xlStart, ylCentre - ylStart)) else: outTmp.write('g0 x{:.6f} y{:.6f}\n'.format(xS, yS)) outTmp.write('m3 $0 s1\n') if isExternal: outTmp.write('g1 x{:.6f} y{:.6f}\n'.format(Cx , Cy)) outTmp.write('g1 x{:.6f} y{:.6f}\n'.format(Bx , By)) outTmp.write('g1 x{:.6f} y{:.6f}\n'.format(Ax , Ay)) else: outTmp.write('g1 x{:.6f} y{:.6f}\n'.format(Ax , Ay)) outTmp.write('g1 x{:.6f} y{:.6f}\n'.format(Bx , By)) outTmp.write('g1 x{:.6f} y{:.6f}\n'.format(Cx , Cy)) outTmp.write('g1 x{:.6f} y{:.6f}\n'.format(xS, yS)) # set leadout direction if leadOutOffset > 0: if isExternal: if Ay >= By: dir = [up, left] else: dir = [down, right] else: if Ay >= By: dir = [down, right] else: dir = [up, left] xlCentre = xS + (leadOutOffset * math.cos(hypotAngle - dir[0])) ylCentre = yS + (leadOutOffset * math.sin(hypotAngle - dir[0])) xlEnd = xlCentre + (leadOutOffset * math.cos(hypotAngle - dir[1])) ylEnd = ylCentre + (leadOutOffset * math.sin(hypotAngle - dir[1])) outTmp.write('g3 x{:.6f} y{:.6f} i{:.6f} j{:.6f}\n'.format(xlEnd, ylEnd , xlCentre - xS, ylCentre - yS)) 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 def get_offset_coordinates(fromPoint, thisPoint, angle, kerfWidth, isExternal): kOffset = kerfWidth / 2 inAng = math.atan2(thisPoint[1] - fromPoint[1], thisPoint[0] - fromPoint[0]) ang = math.radians(90) - (angle / 2) offset = math.tan(ang) * kOffset if isExternal: x = round(thisPoint[0] + offset * math.cos(inAng), 3) y = round(thisPoint[1] + offset * math.sin(inAng), 3) x = round(x + kOffset * math.cos(inAng + math.radians(90)), 3) y = round(y + kOffset * math.sin(inAng + math.radians(90)), 3) else: x = round(thisPoint[0] - offset * math.cos(inAng), 3) y = round(thisPoint[1] - offset * math.sin(inAng), 3) x = round(x + kOffset * math.cos(inAng + math.radians(-90)), 3) y = round(y + kOffset * math.sin(inAng + math.radians(-90)), 3) return x, y