#!/usr/bin/env python
# -*- coding: utf-8 -*-
# Copyright 2019 Hiroshi Murayama <opiopan@gmail.com>
from gerber.cam import FileSettings
import gerber.rs274x
from gerber.gerber_statements import *
from gerberex.gerber_statements import AMParamStmt, AMParamStmtEx, ADParamStmtEx
from gerberex.utility import rotate
import re
def loads(data, filename=None):
cls = gerber.rs274x.GerberParser
cls.SF = \
r"(?P<param>SF)(A(?P<a>{decimal}))?(B(?P<b>{decimal}))?".format(decimal=cls.DECIMAL)
cls.PARAMS = (cls.FS, cls.MO, cls.LP, cls.AD_CIRCLE,
cls.AD_RECT, cls.AD_OBROUND, cls.AD_POLY,
cls.AD_MACRO, cls.AM, cls.AS, cls.IF, cls.IN,
cls.IP, cls.IR, cls.MI, cls.OF, cls.SF, cls.LN)
cls.PARAM_STMT = [re.compile(r"%?{0}\*%?".format(p)) for p in cls.PARAMS]
return cls().parse_raw(data, filename)
def write_gerber_header(file, settings):
file.write('%s\n%s\n%%IPPOS*%%\n' % (
MOParamStmt('MO', settings.units).to_gerber(settings),
FSParamStmt('FS', settings.zero_suppression,
settings.notation, settings.format).to_gerber(settings)))
class GerberFile(gerber.rs274x.GerberFile):
@classmethod
def from_gerber_file(cls, gerber_file):
if not isinstance(gerber_file, gerber.rs274x.GerberFile):
raise Exception('only gerber.rs274x.GerberFile object is specified')
return cls(gerber_file.statements, gerber_file.settings, gerber_file.primitives,\
gerber_file.apertures, gerber_file.filename)
def __init__(self, statements, settings, primitives, apertures, filename=None):
super(GerberFile, self).__init__(statements, settings, primitives, apertures, filename)
self.context = GerberContext.from_settings(self.settings)
self.aperture_macros = {}
self.aperture_defs = []
self.main_statements = []
for stmt in self.statements:
type, stmts = self.context.normalize_statement(stmt)
if type == self.context.TYPE_AM:
for mdef in stmts:
self.aperture_macros[mdef.name] = mdef
elif type == self.context.TYPE_AD:
self.aperture_defs.extend(stmts)
elif type == self.context.TYPE_MAIN:
self.main_statements.extend(stmts)
if self.context.angle != 0:
self.rotate(self.context.angle)
if self.context.is_negative:
self.nagate_polarity()
self.context.notation = 'absolute'
self.context.zeros = 'trailing'
def write(self, filename=None):
self.context.notation = 'absolute'
self.context.zeros = 'trailing'
self.context.format = self.format
self.units = self.units
filename=filename if filename is not None else self.filename
with open(filename, 'w') as f:
write_gerber_header(f, self.context)
for macro in self.aperture_macros:
f.write(self.aperture_macros[macro].to_gerber(self.context) + '\n')
for aperture in self.aperture_defs:
f.write(aperture.to_gerber(self.context) + '\n')
for statement in self.main_statements:
f.write(statement.to_gerber(self.context) + '\n')
f.write('M02*\n')
def to_inch(self):
if self.units == 'metric':
for macro in self.aperture_macros:
self.aperture_macros[macro].to_inch()
for aperture in self.aperture_defs:
aperture.to_inch()
for statement in self.statements:
statement.to_inch()
self.units = 'inch'
self.context.units = 'inch'
def to_metric(self):
if self.units == 'inch':
for macro in self.aperture_macros:
self.aperture_macros[macro].to_metric()
for aperture in self.aperture_defs:
aperture.to_metric()
for statement in self.statements:
statement.to_metric()
self.units='metric'
self.context.units='metric'
def offset(self, x_offset=0, y_offset=0):
for statement in self.main_statements:
if isinstance(statement, CoordStmt):
if statement.x is not None:
statement.x += x_offset
if statement.y is not None:
statement.y += y_offset
for primitive in self.primitives:
primitive.offset(x_offset, y_offset)
def rotate(self, angle, center=(0,0)):
if angle % 360 == 0:
return
self._generalize_aperture()
last_x = 0
last_y = 0
last_rx = 0
last_ry = 0
for name in self.aperture_macros:
self.aperture_macros[name].rotate(angle, center)
for statement in self.main_statements:
if isinstance(statement, CoordStmt) and statement.x != None and statement.y != None:
if statement.i != None and statement.j != None:
cx = last_x + statement.i
cy = last_y + statement.j
cx, cy = rotate(cx, cy, angle, center)
statement.i = cx - last_rx
statement.j = cy - last_ry
last_x = statement.x
last_y = statement.y
last_rx, last_ry = rotate(statement.x, statement.y, angle, center)
statement.x = last_rx
statement.y = last_ry
def nagate_polarity(self):
for statement in self.main_statements:
if isinstance(statement, LPParamStmt):
statement.lp = 'dark' if statement.lp == 'clear' else 'clear'
def _generalize_aperture(self):
RECTANGLE = 0
LANDSCAPE_OBROUND = 1
PORTRATE_OBROUND = 2
POLYGON = 3
macro_defs = [
('MACR', AMParamStmtEx.rectangle),
('MACLO', AMParamStmtEx.landscape_obround),
('MACPO', AMParamStmtEx.portrate_obround),
('MACP', AMParamStmtEx.polygon)
]
need_to_change = False
for statement in self.aperture_defs:
if isinstance(statement, ADParamStmt) and statement.shape in ['R', 'O', 'P']:
need_to_change = True
if need_to_change:
for idx in range(0, len(macro_defs)):
macro_def = macro_defs[idx]
name = macro_def[0]
num = 1
while name in self.aperture_macros:
name = '%s_%d' % (macro_def[0], num)
num += 1
self.aperture_macros[name] = macro_def[1](name, self.units)
macro_defs[idx] = (name, macro_def[1])
for statement in self.aperture_defs:
if isinstance(statement, ADParamStmt):
if statement.shape == 'R':
statement.shape = macro_defs[RECTANGLE][0]
elif statement.shape == 'O':
x = statement.modifiers[0][0] \
if len(statement.modifiers[0]) > 0 else 0
y = statement.modifiers[0][1] \
if len(statement.modifiers[0]) > 1 else 0
statement.shape = macro_defs[LANDSCAPE_OBROUND][0] \
if x > y else macro_defs[PORTRATE_OBROUND][0]
elif statement.shape == 'P':
statement.shape = macro_defs[POLYGON][0]
class GerberContext(FileSettings):
TYPE_NONE = 'none'
TYPE_AM = 'am'
TYPE_AD = 'ad'
TYPE_MAIN = 'main'
IP_LINEAR = 'lenear'
IP_ARC = 'arc'
DIR_CLOCKWISE = 'cw'
DIR_COUNTERCLOCKWISE = 'ccw'
ignored_stmt = ('FSParamStmt', 'MOParamStmt', 'ASParamStmt',
'INParamStmt', 'IPParamStmt', 'IRParamStmt',
'MIParamStmt', 'OFParamStmt', 'SFParamStmt',
'LNParamStmt', 'CommentStmt', 'EofStmt',)
@classmethod
def from_settings(cls, settings):
return cls(settings.notation, settings.units, settings.zero_suppression,
settings.format, settings.zeros, settings.angle_units)
def __init__(self, notation='absolute', units='inch',
zero_suppression=None, format=(2, 5), zeros=None,
angle_units='degrees',
name=None,
mirror=(False, False), offset=(0., 0.), scale=(1., 1.),
angle=0., axis='xy'):
super(GerberContext, self).__init__(notation, units, zero_suppression,
format, zeros, angle_units)
self.name = name
self.mirror = mirror
self.offset = offset
self.scale = scale
self.angle = angle
self.axis = axis
self.matrix = (1, 0,
1, 0,
1, 1)
self.is_negative = False
self.is_first_coordinate = True
self.no_polarity = True
self.in_single_quadrant_mode = False
self.op = None
self.interpolation = self.IP_LINEAR
self.direction = self.DIR_CLOCKWISE
self.x = 0.
self.y = 0.
def normalize_statement(self, stmt):
additional_stmts = None
if isinstance(stmt, INParamStmt):
self.name = stmt.name
elif isinstance(stmt, MIParamStmt):
self.mirror = (stmt.a, stmt.b)
self._update_matrix()
elif isinstance(stmt, OFParamStmt):
self.offset = (stmt.a, stmt.b)
self._update_matrix()
elif isinstance(stmt, SFParamStmt):
self.scale = (stmt.a, stmt.b)
self._update_matrix()
elif isinstance(stmt, ASParamStmt):
self.axis = 'yx' if stmt.mode == 'AYBX' else 'xy'
self._update_matrix()
elif isinstance(stmt, IRParamStmt):
self.angle = stmt.angle
elif isinstance(stmt, AMParamStmt) and not isinstance(stmt, AMParamStmtEx):
stmt = AMParamStmtEx.from_stmt(stmt)
return (self.TYPE_AM, [stmt])
elif isinstance(stmt, ADParamStmt) and not isinstance(stmt, AMParamStmtEx):
stmt = ADParamStmtEx.from_stmt(stmt)
return (self.TYPE_AD, [stmt])
elif isinstance(stmt, QuadrantModeStmt):
self.in_single_quadrant_mode = stmt.mode == 'single-quadrant'
stmt.mode = 'multi-quadrant'
elif isinstance(stmt, IPParamStmt):
self.is_negative = stmt.ip == 'negative'
elif isinstance(stmt, LPParamStmt):
self.no_polarity = False
elif isinstance(stmt, CoordStmt):
self._normalize_coordinate(stmt)
if self.is_first_coordinate:
self.is_first_coordinate = False
if self.no_polarity:
additional_stmts = [LPParamStmt('LP', 'dark'), stmt]
if type(stmt).__name__ in self.ignored_stmt:
return (self.TYPE_NONE, None)
elif additional_stmts is not None:
return (self.TYPE_MAIN, additional_stmts)
else:
return (self.TYPE_MAIN, [stmt])
def _update_matrix(self):
if self.axis == 'xy':
mx = -1 if self.mirror[0] else 1
my = -1 if self.mirror[1] else 1
self.matrix = (
self.scale[0] * mx, self.offset[0],
self.scale[1] * my, self.offset[1],
self.scale[0] * mx, self.scale[1] * my)
else:
mx = -1 if self.mirror[1] else 1
my = -1 if self.mirror[0] else 1
self.matrix = (
self.scale[1] * mx, self.offset[1],
self.scale[0] * my, self.offset[0],
self.scale[1] * mx, self.scale[0] * my)
def _normalize_coordinate(self, stmt):
if stmt.function == 'G01' or stmt.function == 'G1':
self.interpolation = self.IP_LINEAR
elif stmt.function == 'G02' or stmt.function == 'G2':
self.interpolation = self.IP_ARC
self.direction = self.DIR_CLOCKWISE
if self.mirror[0] != self.mirror[1]:
stmt.function = 'G03'
elif stmt.function == 'G03' or stmt.function == 'G3':
self.interpolation = self.IP_ARC
self.direction = self.DIR_COUNTERCLOCKWISE
if self.mirror[0] != self.mirror[1]:
stmt.function = 'G02'
if stmt.only_function:
return
last_x = self.x
last_y = self.y
if self.notation == 'absolute':
x = stmt.x if stmt.x is not None else self.x
y = stmt.y if stmt.y is not None else self.y
else:
x = self.x + stmt.x if stmt.x is not None else 0
y = self.y + stmt.y if stmt.y is not None else 0
self.x, self.y = x, y
self.op = stmt.op if stmt.op is not None else self.op
stmt.op = self.op
stmt.x = self.matrix[0] * x + self.matrix[1]
stmt.y = self.matrix[2] * y + self.matrix[3]
if stmt.op == 'D01' and self.interpolation == self.IP_ARC:
qx, qy = 1, 1
if self.in_single_quadrant_mode:
if self.direction == self.DIR_CLOCKWISE:
qx = 1 if y > last_y else -1
qy = 1 if x < last_x else -1
else:
qx = 1 if y < last_y else -1
qy = 1 if x > last_x else -1
if last_x == x and last_y == y:
qx, qy = 0, 0
stmt.i = qx * self.matrix[4] * stmt.i if stmt.i is not None else 0
stmt.j = qy * self.matrix[5] * stmt.j if stmt.j is not None else 0