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