''' gusset.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, xOffset, yOffset, kerfWidth, isExternal, width, height, angle, radius, rButton): 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, width = Conv.conv_is_float(width) if not valid and width: msg0 = _('WIDTH') error += f'{msg0} {msg1}\n\n' valid, height = Conv.conv_is_float(height) if not valid and height: msg0 = _('HEIGHT') error += f'{msg0} {msg1}\n\n' valid, radius = Conv.conv_is_float(radius) if not valid and radius: error += f'{rButton} {msg1}\n\n' valid, angle = Conv.conv_is_float(angle) if not valid and angle: msg0 = _(' ANGLE') 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 width == 0: msg = _('WIDTH cannot be zero') error += f'{msg}\n\n' if height == 0: msg = _('HEIGHT cannot be zero') error += f'{msg}\n\n' if angle == 0: msg = _('ANGLE cannot be zero') error += f'{msg}\n\n' if radius > width: # this needs a real calculation in the future ********* msg = _('must be less than WIDTH') error += f'{rButton} {msg}\n\n' if radius > height: # this needs a real calculation in the future ********* msg = _('must be less than HEIGHT') error += f'{rButton} {msg}\n\n' if error: return error angle = math.radians(angle) leadInOffset = math.sin(math.radians(45)) * float(leadinLength) leadOutOffset = math.sin(math.radians(45)) * float(leadoutLength) right = math.radians(0) up = math.radians(90) left = math.radians(180) down = math.radians(270) # get original points x0 = xOffset y0 = yOffset x1 = x0 + width * math.cos(right) y1 = y0 + width * math.sin(right) # get offset start point x0n, y0n, = get_offset_coordinates([x1, y1], [x0, y0], angle, kerfWidth, isExternal) # get new start point x0 = x0n + (x0 - x0n) * 2 y0 = y0n + (y0 - y0n) * 2 # get new points x1 = x0 + width * math.cos(right) y1 = y0 + width * math.sin(right) x2 = x0 + height * math.cos(angle) y2 = y0 + height * math.sin(angle) ang1 = get_angle([x2, y2], [x1, y1], [x0, y0]) ang2 = get_angle([x0, y0], [x2, y2], [x1, y1]) # get new offset points x0, y0, = get_offset_coordinates([x1, y1], [x0, y0], angle, kerfWidth, isExternal) x1, y1, = get_offset_coordinates([x2, y2], [x1, y1], ang1, kerfWidth, isExternal) x2, y2, = get_offset_coordinates([x0, y0], [x2, y2], ang2, kerfWidth, isExternal) # get leadin point hypotLength = math.sqrt((x2 - x1) ** 2 + (y2 - y1) ** 2) if x2 <= x1: hypotAngle = left - math.atan((y2 - y1) / (x1 - x2)) else: hypotAngle = right - math.atan((y2 - y1) / (x1 - x2)) xS = x1 + (hypotLength / 2) * math.cos(hypotAngle) yS = y1 + (hypotLength / 2) * math.sin(hypotAngle) if isExternal: if y2 >= y0: dir = [up, right] else: dir = [down, left] else: if y2 >= y0: dir = [down, left] else: dir = [up, right] 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 gusset)\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 > 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(f'G00 X{xlStart:.6f} Y{ylStart:.6f}\n') outTmp.write('M03 $0 S1\n') outTmp.write(f'G03 X{xS:.6f} Y{yS:.6f} I{xlCentre - xlStart:.6f} J{ylCentre - ylStart:.6f}\n') else: outTmp.write(f'G00 X{xS:.6f} Y{yS:.6f}\n') outTmp.write('M03 $0 S1\n') if isExternal: outTmp.write(f'G01 X{x1:.6f} Y{y1:.6f}\n') if radius > 0: x3 = x0 + radius y3 = y0 outTmp.write(f'G01 X{x3:.6f} Y{y3:.6f}\n') x4 = x0 + radius * math.cos(angle) y4 = y0 + radius * math.sin(angle) if rButton.startswith(_('RADIUS')): if y2 >= y0: outTmp.write(f'G03 X{x4:.6f} Y{y4:.6f} I{x0 - x3:.6f} J{y0 - y3:.6f}\n') else: outTmp.write(f'G02 X{x4:.6f} Y{y4:.6f} I{x0 - x3:.6f} J{y0 - y3:.6f}\n') else: outTmp.write(f'G01 X{x4:.6f} Y{y4:.6f}\n') else: outTmp.write(f'G01 X{x0:.6f} Y{y0:.6f}\n') outTmp.write(f'G01 X{x2:.6f} Y{y2:.6f}\n') outTmp.write(f'G01 X{xS:.6f} Y{yS:.6f}\n') else: outTmp.write(f'G01 X{x2:.6f} Y{y2:.6f}\n') if radius > 0: x3 = x0 + radius y3 = y0 x4 = x0 + radius * math.cos(angle) y4 = y0 + radius * math.sin(angle) outTmp.write(f'G01 X{x4:.6f} Y{y4:.6f}\n') if rButton.startswith(_('RADIUS')): if y2 >= y0: outTmp.write(f'G02 X{x3:.6f} Y{y3:.6f} I{x0 - x4:.6f} J{y0 - y4:.6f}\n') else: outTmp.write(f'G03 X{x3:.6f} Y{y3:.6f} I{x0 - x4:.6f} J{y0 - y4:.6f}\n') else: outTmp.write(f'G01 X{x3:.6f} Y{y3:.6f}\n') else: outTmp.write(f'G01 X{x0:.6f} Y{y0:.6f}\n') outTmp.write(f'G01 X{x1:.6f} Y{y1:.6f}\n') outTmp.write(f'G01 X{xS:.6f} Y{yS:.6f}\n') outTmp.write(f'G01 X{xS:.6f} Y{yS:.6f}\n') if leadOutOffset > 0: if isExternal: if y2 >= y0: dir = [up, left] else: dir = [down, right] else: if y2 >= y0: 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(f'G03 X{xlEnd:.6f} Y{ylEnd:.6f} I{xlCentre - xS:.6f} J{ylCentre - yS:.6f}\n') outTmp.write('M05 $0\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 None 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 = thisPoint[0] + offset * math.cos(inAng) y = thisPoint[1] + offset * math.sin(inAng) x = x + kOffset * math.cos(inAng + math.radians(90)) y = y + kOffset * math.sin(inAng + math.radians(90)) else: x = thisPoint[0] - offset * math.cos(inAng) y = thisPoint[1] - offset * math.sin(inAng) x = x + kOffset * math.cos(inAng + math.radians(-90)) y = y + kOffset * math.sin(inAng + math.radians(-90)) return x, y def get_angle(fromPoint, thisPoint, nextPoint): a = math.atan2(fromPoint[1] - thisPoint[1], fromPoint[0] - thisPoint[0]) c = math.atan2(nextPoint[1] - thisPoint[1], nextPoint[0] - thisPoint[0]) 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) return ang