293 lines
12 KiB
Python
293 lines
12 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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# Copyright 2019 Hiroshi Murayama <opiopan@gmail.com>
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import operator
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from gerber.excellon import ExcellonParser, detect_excellon_format, ExcellonFile, DrillHit, DrillSlot
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from gerber.excellon_statements import UnitStmt, CoordinateStmt, UnknownStmt, SlotStmt, DrillModeStmt, \
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ToolSelectionStmt, ZAxisRoutPositionStmt, \
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RetractWithClampingStmt, RetractWithoutClampingStmt, \
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EndOfProgramStmt
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from gerber.cam import FileSettings
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from gerber.utils import inch, metric, write_gerber_value, parse_gerber_value
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from gerberex.utility import rotate
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def loads(data, filename=None, settings=None, tools=None, format=None):
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if not settings:
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settings = FileSettings(**detect_excellon_format(data))
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if format:
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settings.format = format
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file = ExcellonParser(settings, tools).parse_raw(data, filename)
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return ExcellonFileEx.from_file(file)
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class ExcellonFileEx(ExcellonFile):
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@classmethod
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def from_file(cls, file):
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def correct_statements():
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lazy_stmt = None
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modifier = None
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for stmt in file.statements:
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modifier = lazy_stmt
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lazy_stmt = None
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if isinstance(stmt, UnitStmt):
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yield UnitStmtEx.from_statement(stmt)
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elif isinstance(stmt, CoordinateStmt):
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new_stmt = CoordinateStmtEx.from_statement(stmt)
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if modifier and new_stmt.mode is None:
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new_stmt.mode = modifier
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yield new_stmt
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elif isinstance(stmt, UnknownStmt):
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line = stmt.stmt.strip()
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mode = None
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if line[:3] == 'G02':
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mode = CoordinateStmtEx.MODE_CIRCULER_CW
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elif line[:3] == 'G03':
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mode = CoordinateStmtEx.MODE_CIRCULER_CCW
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else:
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yield stmt
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continue
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if len(line) == 3:
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lazy_stmt = mode
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continue
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new_stmt = CoordinateStmtEx.from_excellon(line[3:], file.settings)
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new_stmt.mode = mode
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yield new_stmt
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else:
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yield stmt
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def generate_hits(statements):
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STAT_DRILL = 0
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STAT_ROUT_UP = 1
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STAT_ROUT_DOWN = 2
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status = STAT_DRILL
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current_tool = None
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rout_statements = []
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def make_rout(status, statements):
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if status != STAT_ROUT_DOWN or len(statements) == 0 or current_tool is None:
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return None
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return DrillRout.from_coordinates(current_tool, statements)
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for stmt in statements:
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if isinstance(stmt, ToolSelectionStmt):
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current_tool = file.tools[stmt.tool]
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elif isinstance(stmt, DrillModeStmt):
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rout = make_rout(status, rout_statements)
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rout_statements = []
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if rout is not None:
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yield rout
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status = STAT_DRILL
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elif isinstance(stmt, ZAxisRoutPositionStmt) and status == STAT_ROUT_UP:
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status = STAT_ROUT_DOWN
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elif isinstance(stmt, RetractWithClampingStmt) or isinstance(stmt, RetractWithoutClampingStmt):
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rout = make_rout(status, rout_statements)
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rout_statements = []
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if rout is not None:
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yield rout
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status = STAT_ROUT_UP
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elif isinstance(stmt, SlotStmt):
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yield DrillSlotEx(current_tool, (stmt.x_start, stmt.y_start),
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(stmt.x_end, stmt.y_end), DrillSlotEx.TYPE_G85)
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elif isinstance(stmt, CoordinateStmtEx):
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if stmt.mode is None:
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if status != STAT_DRILL:
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raise Exception('invalid statement sequence')
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yield DrillHitEx(current_tool, (stmt.x, stmt.y))
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else:
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if stmt.mode == stmt.MODE_ROUT:
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status = STAT_ROUT_UP
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if status == STAT_ROUT_UP:
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rout_statements = [stmt]
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elif status == STAT_ROUT_DOWN:
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rout_statements.append(stmt)
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else:
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raise Exception('invalid statement sequence')
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statements = [s for s in correct_statements()]
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hits = [h for h in generate_hits(statements)]
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return cls(statements, file.tools, hits, file.settings, file.filename)
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@property
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def primitives(self):
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return []
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def __init__(self, statements, tools, hits, settings, filename=None):
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super(ExcellonFileEx, self).__init__(statements, tools, hits, settings, filename)
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def rotate(self, angle, center=(0,0)):
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if angle % 360 == 0:
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return
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for hit in self.hits:
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hit.rotate(angle, center)
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def to_inch(self):
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if self.units == 'metric':
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super(ExcellonFileEx, self).to_inch()
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for hit in self.hits:
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hit.to_inch()
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def to_metric(self):
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if self.units == 'inch':
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super(ExcellonFileEx, self).to_metric()
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for hit in self.hits:
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hit.to_metric()
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def write(self, filename=None):
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filename = filename if filename is not None else self.filename
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with open(filename, 'w') as f:
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for statement in self.statements:
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if not isinstance(statement, ToolSelectionStmt):
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f.write(statement.to_excellon(self.settings) + '\n')
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else:
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break
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for tool in iter(self.tools.values()):
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f.write(ToolSelectionStmt(
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tool.number).to_excellon(self.settings) + '\n')
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for hit in self.hits:
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if hit.tool.number == tool.number:
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f.write(hit.to_excellon(self.settings) + '\n')
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f.write(EndOfProgramStmt().to_excellon() + '\n')
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class DrillHitEx(DrillHit):
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def rotate(self, angle, center=(0,0)):
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self.position = rotate(*self.position, angle, center)
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def to_excellon(self, settings):
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return CoordinateStmtEx(*self.position).to_excellon(settings)
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class DrillSlotEx(DrillSlot):
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def rotate(self, angle, center=(0,0)):
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self.start = rotate(*self.start, angle, center)
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self.end = rotate(*self.end, angle, center)
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def to_excellon(self, settings):
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return SlotStmt(*self.start, *self.end).to_excellon(settings)
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class DrillRout(object):
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class Node(object):
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def __init__(self, mode, x, y, radius):
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self.mode = mode
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self.position = (x, y)
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self.radius = radius
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@classmethod
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def from_coordinates(cls, tool, coordinates):
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nodes = [cls.Node(c.mode, c.x, c.y, c.radius) for c in coordinates]
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return cls(tool, nodes)
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def __init__(self, tool, nodes):
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self.tool = tool
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self.nodes = nodes
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def to_excellon(self, settings):
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node = self.nodes[0]
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excellon = CoordinateStmtEx(*node.position, node.radius,
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CoordinateStmtEx.MODE_ROUT).to_excellon(settings) + '\nM15\n'
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for node in self.nodes[1:]:
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excellon += CoordinateStmtEx(*node.position, node.radius,
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node.mode).to_excellon(settings) + '\n'
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excellon += 'M16\nG05\n'
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return excellon
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def to_inch(self):
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if self.tool.settings.units == 'metric':
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self.tool.to_inch()
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for node in self.nodes:
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node.position = tuple(map(inch, node.position))
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node.radius = inch(
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node.radius) if node.radius is not None else None
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def to_metric(self):
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if self.tool.settings.units == 'inch':
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self.tool.to_metric()
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for node in self.nodes:
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node.position = tuple(map(metric, node.position))
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node.radius = metric(
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node.radius) if node.radius is not None else None
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def offset(self, x_offset=0, y_offset=0):
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for node in self.nodes:
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node.position = tuple(map(operator.add, node.position, (x_offset, y_offset)))
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def rotate(self, angle, center=(0, 0)):
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for node in self.nodes:
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node.position = rotate(*node.position, angle, center)
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class UnitStmtEx(UnitStmt):
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@classmethod
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def from_statement(cls, stmt):
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return cls(units=stmt.units, zeros=stmt.zeros, format=stmt.format, id=stmt.id)
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def __init__(self, units='inch', zeros='leading', format=None, **kwargs):
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super(UnitStmtEx, self).__init__(units, zeros, format, **kwargs)
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def to_excellon(self, settings=None):
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format = settings.format if settings else self.format
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stmt = '%s,%s,%s.%s' % ('INCH' if self.units == 'inch' else 'METRIC',
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'LZ' if self.zeros == 'leading' else 'TZ',
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'0' * format[0], '0' * format[1])
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return stmt
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class CoordinateStmtEx(CoordinateStmt):
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MODE_ROUT = 'ROUT'
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MODE_LINEAR = 'LINEAR'
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MODE_CIRCULER_CW = 'CW'
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MODE_CIRCULER_CCW = 'CCW'
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@classmethod
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def from_statement(cls, stmt):
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newStmt = cls(x=stmt.x, y=stmt.y)
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newStmt.mode = stmt.mode
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newStmt.radius = stmt.radius if isinstance(stmt, CoordinateStmtEx) else None
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return newStmt
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@classmethod
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def from_excellon(cls, line, settings, **kwargs):
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parts = line.split('A')
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stmt = cls.from_statement(CoordinateStmt.from_excellon(parts[0], settings))
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if len(parts) > 1:
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stmt.radius = parse_gerber_value(
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parts[1], settings.format, settings.zero_suppression)
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return stmt
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def __init__(self, x=None, y=None, radius=None, mode=None, **kwargs):
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super(CoordinateStmtEx, self).__init__(x, y, **kwargs)
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self.mode = mode
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self.radius = radius
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def to_excellon(self, settings):
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stmt = ''
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if self.mode == self.MODE_ROUT:
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stmt += "G00"
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if self.mode == self.MODE_LINEAR:
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stmt += "G01"
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if self.mode == self.MODE_CIRCULER_CW:
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stmt += "G02"
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if self.mode == self.MODE_CIRCULER_CCW:
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stmt += "G03"
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if self.x is not None:
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stmt += 'X%s' % write_gerber_value(self.x, settings.format,
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settings.zero_suppression)
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if self.y is not None:
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stmt += 'Y%s' % write_gerber_value(self.y, settings.format,
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settings.zero_suppression)
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if self.radius is not None:
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stmt += 'A%s' % write_gerber_value(self.radius, settings.format,
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settings.zero_suppression)
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return stmt
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def __str__(self):
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coord_str = ''
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if self.x is not None:
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coord_str += 'X: %g ' % self.x
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if self.y is not None:
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coord_str += 'Y: %g ' % self.y
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if self.radius is not None:
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coord_str += 'A: %g ' % self.radius
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return '<Coordinate Statement: %s(%s)>' % \
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(coord_str, self.mode if self.mode else 'HIT')
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