''' 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