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'''
gusset.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, \
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 += '{} {}\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, width = Conv.conv_is_float(width)
if not valid and width:
msg0 = _('WIDTH')
error += '{} {}\n\n'.format(msg0, msg1)
valid, height = Conv.conv_is_float(height)
if not valid and height:
msg0 = _('HEIGHT')
error += '{} {}\n\n'.format(msg0, msg1)
valid, radius = Conv.conv_is_float(radius)
if not valid and radius:
error += '{} {}\n\n'.format(rButton, 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 error:
return error
if width == 0:
msg = _('WIDTH cannot be zero')
error += '{}\n\n'.format(msg)
if height == 0:
msg = _('HEIGHT cannot be zero')
error += '{}\n\n'.format(msg)
if angle == 0:
msg = _('ANGLE cannot be zero')
error += '{}\n\n'.format(msg)
if radius > width: # this needs a real calculation in the future *********
msg = _('must be less than WIDTH')
error += '{} {}\n\n'.format(rButton, msg)
if radius > height: # this needs a real calculation in the future *********
msg = _('must be less than HEIGHT')
error += '{} {}\n\n'.format(rButton, msg)
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 poin
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:
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 gusset)\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(x1, y1))
if radius > 0:
x3 = x0 + radius
y3 = y0
outTmp.write('g1 x{:.6f} y{:.6f}\n'.format(x3, y3))
x4 = x0 + radius * math.cos(angle)
y4 = y0 + radius * math.sin(angle)
if rButton.startswith(_('RADIUS')):
if y2 >= y0:
outTmp.write('g3 x{:.6f} y{:.6f} i{:.6f} j{:.6f}\n'.format(x4, y4 , x0 - x3, y0 - y3))
else:
outTmp.write('g2 x{:.6f} y{:.6f} i{:.6f} j{:.6f}\n'.format(x4, y4 , x0 - x3, y0 - y3))
else:
outTmp.write('g1 x{:.6f} y{:.6f}\n'.format(x4, y4))
else:
outTmp.write('g1 x{:.6f} y{:.6f}\n'.format(x0, y0))
outTmp.write('g1 x{:.6f} y{:.6f}\n'.format(x2, y2))
outTmp.write('g1 x{:.6f} y{:.6f}\n'.format(xS, yS))
else:
outTmp.write('g1 x{:.6f} y{:.6f}\n'.format(x2, y2))
if radius > 0:
x3 = x0 + radius
y3 = y0
x4 = x0 + radius * math.cos(angle)
y4 = y0 + radius * math.sin(angle)
outTmp.write('g1 x{:.6f} y{:.6f}\n'.format(x4, y4))
if rButton.startswith(_('RADIUS')):
if y2 >= y0:
outTmp.write('g2 x{:.6f} y{:.6f} i{:.6f} j{:.6f}\n'.format(x3, y3 , x0 - x4, y0 - y4))
else:
outTmp.write('g3 x{:.6f} y{:.6f} i{:.6f} j{:.6f}\n'.format(x3, y3 , x0 - x4, y0 - y4))
else:
outTmp.write('g1 x{:.6f} y{:.6f}\n'.format(x3, y3))
else:
outTmp.write('g1 x{:.6f} y{:.6f}\n'.format(x0, y0))
outTmp.write('g1 x{:.6f} y{:.6f}\n'.format(x1, y1))
outTmp.write('g1 x{:.6f} y{:.6f}\n'.format(xS, yS))
outTmp.write('g1 x{:.6f} y{:.6f}\n'.format(xS, yS))
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('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 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
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