646 lines
23 KiB
Python
646 lines
23 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 io, sys
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from math import pi, cos, sin, tan, atan, atan2, acos, asin, sqrt
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import dxfgrabber
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from gerber.cam import CamFile, FileSettings
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from gerber.utils import inch, metric, write_gerber_value, rotate_point
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from gerber.gerber_statements import ADParamStmt
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from gerber.excellon_statements import ExcellonTool
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from gerber.excellon_statements import CoordinateStmt
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from gerberex.utility import is_equal_point, is_equal_value
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from gerberex.dxf_path import generate_closed_paths
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ACCEPTABLE_ERROR = 0.001
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class DxfStatement(object):
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def __init__(self, entity):
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self.entity = entity
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self.start = None
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self.end = None
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self.is_closed = False
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def to_gerber(self, settings=None, pitch=0, width=0):
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pass
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def to_excellon(self, settings=None, pitch=0, width=0):
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pass
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def to_inch(self):
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pass
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def to_metric(self):
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pass
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def is_equal_to(self, target, error_range=0):
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return False
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def reverse(self):
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raise Exception('Not implemented')
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def offset(self, offset_x, offset_y):
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raise Exception('Not supported')
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def rotate(self, angle, center=(0, 0)):
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raise Exception('Not supported')
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class DxfLineStatement(DxfStatement):
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@classmethod
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def from_entity(cls, entity):
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start = (entity.start[0], entity.start[1])
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end = (entity.end[0], entity.end[1])
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return cls(entity, start, end)
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def __init__(self, entity, start, end):
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super(DxfLineStatement, self).__init__(entity)
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self.start = start
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self.end = end
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def to_gerber(self, settings=FileSettings(), pitch=0, width=0):
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if pitch == 0:
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x0, y0 = self.start
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x1, y1 = self.end
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return 'G01*\nX{0}Y{1}D02*\nX{2}Y{3}D01*'.format(
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write_gerber_value(x0, settings.format,
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settings.zero_suppression),
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write_gerber_value(y0, settings.format,
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settings.zero_suppression),
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write_gerber_value(x1, settings.format,
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settings.zero_suppression),
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write_gerber_value(y1, settings.format,
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settings.zero_suppression)
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)
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else:
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gstr = ""
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for p in self._dots(pitch, width):
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gstr += 'X{0}Y{1}D03*\n'.format(
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write_gerber_value(p[0], settings.format,
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settings.zero_suppression),
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write_gerber_value(p[1], settings.format,
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settings.zero_suppression))
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return gstr
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def to_excellon(self, settings=FileSettings(), pitch=0, width=0):
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if not pitch:
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return
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gstr = ""
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for p in self._dots(pitch, width):
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gstr += CoordinateStmt(x=p[0], y=p[1]).to_excellon(settings) + '\n'
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return gstr
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def to_inch(self):
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self.start = (
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inch(self.start[0]), inch(self.start[1]))
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self.end = (
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inch(self.end[0]), inch(self.end[1]))
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def to_metric(self):
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self.start = (
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metric(self.start[0]), metric(self.start[1]))
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self.end = (
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metric(self.end[0]), metric(self.end[1]))
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def is_equal_to(self, target, error_range=0):
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if not isinstance(target, DxfLineStatement):
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return False
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return (is_equal_point(self.start, target.start, error_range) and \
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is_equal_point(self.end, target.end, error_range)) or \
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(is_equal_point(self.start, target.end, error_range) and \
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is_equal_point(self.end, target.start, error_range))
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def reverse(self):
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pt = self.start
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self.start = self.end
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self.end = pt
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def _dots(self, pitch, width):
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x0, y0 = self.start
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x1, y1 = self.end
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y1 = self.end[1]
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xp = x1 - x0
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yp = y1 - y0
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l = sqrt(xp * xp + yp * yp)
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xd = xp * pitch / l
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yd = yp * pitch / l
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d = 0;
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while d < l + width / 2:
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yield (x0, y0)
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x0 += xd
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y0 += yd
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d += pitch
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def offset(self, offset_x, offset_y):
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self.start = (self.start[0] + offset_x, self.start[1] + offset_y)
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self.end = (self.end[0] + offset_x, self.end[1] + offset_y)
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def rotate(self, angle, center=(0, 0)):
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self.start = rotate_point(self.start, angle, center)
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self.end = rotate_point(self.end, angle, center)
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class DxfCircleStatement(DxfStatement):
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def __init__(self, entity):
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super(DxfCircleStatement, self).__init__(entity)
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self.radius = self.entity.radius
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self.center = (self.entity.center[0], self.entity.center[1])
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self.start = (self.center[0] + self.radius, self.center[1])
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self.end = self.start
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self.is_closed = True
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def to_gerber(self, settings=FileSettings(), pitch=0, width=0):
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if pitch:
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return
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r = self.radius
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x0, y0 = self.center
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return 'G01*\nX{0}Y{1}D02*\n' \
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'G75*\nG03*\nX{2}Y{3}I{4}J{5}D01*'.format(
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write_gerber_value(x0 + r, settings.format,
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settings.zero_suppression),
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write_gerber_value(y0, settings.format,
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settings.zero_suppression),
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write_gerber_value(x0 + r, settings.format,
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settings.zero_suppression),
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write_gerber_value(y0, settings.format,
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settings.zero_suppression),
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write_gerber_value(-r, settings.format,
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settings.zero_suppression),
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write_gerber_value(0, settings.format,
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settings.zero_suppression)
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)
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def to_inch(self):
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self.radius = inch(self.radius)
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self.center = (
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inch(self.center[0]), inch(self.center[1]))
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def to_metric(self):
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self.radius = metric(self.radius)
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self.center = (
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metric(self.center[0]), metric(self.center[1]))
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def is_equal_to(self, target, error_range=0):
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if not isinstance(target, DxfCircleStatement):
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return False
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return is_equal_point(self.center, target.enter, error_range) and \
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is_equal_value(self.radius, target.radius)
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def reverse(self):
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pass
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def offset(self, offset_x, offset_y):
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self.center = (self.center[0] + offset_x, self.center[1] + offset_y)
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def rotate(self, angle, center=(0, 0)):
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self.center = rotate_point(self.center, angle, center)
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class DxfArcStatement(DxfStatement):
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def __init__(self, entity):
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super(DxfArcStatement, self).__init__(entity)
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self.start_angle = self.entity.start_angle
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self.end_angle = self.entity.end_angle
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self.radius = self.entity.radius
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self.center = (self.entity.center[0], self.entity.center[1])
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self.start = (
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self.center[0] + self.radius * cos(self.start_angle / 180. * pi),
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self.center[1] + self.radius * sin(self.start_angle / 180. * pi),
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)
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self.end = (
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self.center[0] + self.radius * cos(self.end_angle / 180. * pi),
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self.center[1] + self.radius * sin(self.end_angle / 180. * pi),
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)
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angle = self.end_angle - self.start_angle
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self.is_closed = angle >= 360 or angle <= -360
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def to_gerber(self, settings=FileSettings(), pitch=0, width=0):
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if pitch:
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return
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x0 = self.center[0]
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y0 = self.center[1]
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start_x, start_y = self.start
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end_x, end_y = self.end
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return 'G01*\nX{0}Y{1}D02*\n' \
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'G75*\nG{2}*\nX{3}Y{4}I{5}J{6}D01*'.format(
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write_gerber_value(start_x, settings.format,
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settings.zero_suppression),
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write_gerber_value(start_y, settings.format,
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settings.zero_suppression),
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'02' if self.start_angle > self.end_angle else '03',
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write_gerber_value(end_x, settings.format,
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settings.zero_suppression),
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write_gerber_value(end_y, settings.format,
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settings.zero_suppression),
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write_gerber_value(x0 - start_x, settings.format,
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settings.zero_suppression),
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write_gerber_value(y0 - start_y, settings.format,
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settings.zero_suppression)
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)
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def to_inch(self):
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self.radius = inch(self.radius)
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self.center = (inch(self.center[0]), inch(self.center[1]))
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self.start = (inch(self.start[0]), inch(self.start[1]))
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self.end = (inch(self.end[0]), inch(self.end[1]))
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def to_metric(self):
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self.radius = metric(self.radius)
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self.center = (metric(self.center[0]), metric(self.center[1]))
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self.start = (metric(self.start[0]), metric(self.start[1]))
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self.end = (metric(self.end[0]), metric(self.end[1]))
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def is_equal_to(self, target, error_range=0):
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if not isinstance(target, DxfArcStatement):
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return False
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aerror_range = error_range / pi * self.radius * 180
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return is_equal_point(self.center, target.center, error_range) and \
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is_equal_value(self.radius, target.radius, error_range) and \
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((is_equal_value(self.start_angle, target.start_angle, aerror_range) and
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is_equal_value(self.end_angle, target.end_angle, aerror_range)) or
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(is_equal_value(self.start_angle, target.end_angle, aerror_range) and
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is_equal_value(self.end_angle, target.end_angle, aerror_range)))
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def reverse(self):
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tmp = self.start_angle
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self.start_angle = self.end_angle
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self.end_angle = tmp
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tmp = self.start
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self.start = self.end
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self.end = tmp
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def offset(self, offset_x, offset_y):
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self.center = (self.center[0] + offset_x, self.center[1] + offset_y)
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self.start = (self.start[0] + offset_x, self.start[1] + offset_y)
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self.end = (self.end[0] + offset_x, self.end[1] + offset_y)
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def rotate(self, angle, center=(0, 0)):
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self.start_angle += angle
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self.end_angle += angle
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self.center = rotate_point(self.center, angle, center)
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self.start = rotate_point(self.start, angle, center)
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self.end = rotate_point(self.end, angle, center)
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class DxfPolylineStatement(DxfStatement):
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def __init__(self, entity):
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super(DxfPolylineStatement, self).__init__(entity)
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self.start = (self.entity.points[0][0], self.entity.points[0][1])
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self.is_closed = self.entity.is_closed
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if self.is_closed:
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self.end = self.start
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else:
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self.end = (self.entity.points[-1][0], self.entity.points[-1][1])
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def to_gerber(self, settings=FileSettings(), pitch=0, width=0):
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if pitch:
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return
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x0 = self.entity.points[0][0]
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y0 = self.entity.points[0][1]
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b = self.entity.bulge[0]
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gerber = 'G01*\nX{0}Y{1}D02*\nG75*'.format(
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write_gerber_value(x0, settings.format,
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settings.zero_suppression),
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write_gerber_value(y0, settings.format,
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settings.zero_suppression),
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)
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def ptseq():
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for i in range(1, len(self.entity.points)):
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yield i
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if self.entity.is_closed:
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yield 0
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for idx in ptseq():
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pt = self.entity.points[idx]
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x1 = pt[0]
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y1 = pt[1]
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if b == 0:
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gerber += '\nG01*\nX{0}Y{1}D01*'.format(
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write_gerber_value(x1, settings.format,
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settings.zero_suppression),
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write_gerber_value(y1, settings.format,
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settings.zero_suppression),
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)
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else:
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ang = 4 * atan(b)
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xm = x0 + x1
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ym = y0 + y1
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t = 1 / tan(ang / 2)
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xc = (xm - t * (y1 - y0)) / 2
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yc = (ym + t * (x1 - x0)) / 2
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r = sqrt((x0 - xc)*(x0 - xc) + (y0 - yc)*(y0 - yc))
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gerber += '\nG{0}*\nX{1}Y{2}I{3}J{4}D01*'.format(
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'03' if ang > 0 else '02',
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write_gerber_value(x1, settings.format,
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settings.zero_suppression),
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write_gerber_value(y1, settings.format,
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settings.zero_suppression),
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write_gerber_value(xc - x0, settings.format,
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settings.zero_suppression),
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write_gerber_value(yc - y0, settings.format,
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settings.zero_suppression)
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)
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x0 = x1
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y0 = y1
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b = self.entity.bulge[idx]
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return gerber
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def to_inch(self):
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self.start = (inch(self.start[0]), inch(self.start[1]))
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self.end = (inch(self.end[0]), inch(self.end[1]))
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for idx in range(0, len(self.entity.points)):
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self.entity.points[idx] = (
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inch(self.entity.points[idx][0]), inch(self.entity.points[idx][1]))
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def to_metric(self):
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self.start = (metric(self.start[0]), metric(self.start[1]))
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self.end = (metric(self.end[0]), metric(self.end[1]))
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for idx in range(0, len(self.entity.points)):
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self.entity.points[idx] = (
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metric(self.entity.points[idx][0]), metric(self.entity.points[idx][1]))
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def offset(self, offset_x, offset_y):
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for idx in range(len(self.entity.points)):
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self.entity.points[idx] = (
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self.entity.points[idx][0] + offset_x, self.entity.points[idx][1] + offset_y)
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def rotate(self, angle, center=(0, 0)):
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for idx in range(len(self.entity.points)):
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self.entity.points[idx] = rotate_point(self.entity.points[idx], angle, center)
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class DxfStatements(object):
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def __init__(self, statements, units, dcode=10, draw_mode=None):
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if draw_mode == None:
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draw_mode = DxfFile.DM_LINE
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self._units = units
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self.dcode = dcode
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self.draw_mode = draw_mode
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self.pitch = inch(1) if self._units == 'inch' else 1
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self.width = 0
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self.error_range = inch(ACCEPTABLE_ERROR) if self._units == 'inch' else ACCEPTABLE_ERROR
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self.statements = statements
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self.paths = generate_closed_paths(self.statements, self.error_range)
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@property
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def units(self):
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return _units
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def to_gerber(self, settings=FileSettings()):
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def gerbers():
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yield 'D{0}*'.format(self.dcode)
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if self.draw_mode == DxfFile.DM_FILL:
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yield 'G36*'
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for statement in self.statements:
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if isinstance(statement, DxfCircleStatement) or \
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(isinstance(statement, DxfPolylineStatement) and statement.entity.is_closed):
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yield statement.to_gerber(settings)
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for path in self.paths:
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yield path.to_gerber(settings)
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yield 'G37*'
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else:
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for statement in self.statements:
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yield statement.to_gerber(
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settings,
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pitch=self.pitch if self.draw_mode == DxfFile.DM_MOUSE_BITES else 0,
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width=self.width)
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return '\n'.join(gerbers())
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def to_excellon(self, settings=FileSettings()):
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if not self.draw_mode == DxfFile.DM_MOUSE_BITES:
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return
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def drills():
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for statement in self.statements:
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if isinstance(statement, DxfLineStatement):
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yield statement.to_excellon(settings, pitch=self.pitch, width=self.width)
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return '\n'.join(drills())
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def to_inch(self):
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if self._units == 'metric':
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self._units = 'inch'
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self.pitch = inch(self.pitch)
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self.error_range = inch(self.error_range)
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for statement in self.statements:
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statement.to_inch()
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for path in self.paths:
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path.to_inch()
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def to_metric(self):
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if self._units == 'inch':
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self._units = 'metric'
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self.pitch = metric(self.pitch)
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self.error_range = metric(self.error_range)
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for statement in self.statements:
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statement.to_metric()
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for path in self.paths:
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path.to_metric()
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def offset(self, offset_x, offset_y):
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for statement in self.statements:
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statement.offset(offset_x, offset_y)
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def rotate(self, angle, center=(0, 0)):
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for statement in self.statements:
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statement.rotate(angle, center)
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class DxfHeaderStatement(object):
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def to_gerber(self, settings):
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return 'G75*\n'\
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'%MO{0}*%\n'\
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'%OFA0B0*%\n'\
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'%FS{1}AX{2}{3}Y{4}{5}*%\n'\
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'%IPPOS*%\n'\
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'%LPD*%'.format(
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'IN' if settings.units == 'inch' else 'MM',
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'L' if settings.zero_suppression == 'leading' else 'T',
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settings.format[0], settings.format[1],
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settings.format[0], settings.format[1]
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)
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def to_excellon(self, settings):
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return 'M48\n'\
|
|
'FMAT,2\n'\
|
|
'ICI,{0}\n'\
|
|
'{1},{2},{3}.{4}\n'\
|
|
'{5}'.format(
|
|
'ON' if settings.notation == 'incremental' else 'OFF',
|
|
'INCH' if settings.units == 'inch' else 'METRIC',
|
|
'TZ' if settings.zero_suppression == 'leading' else 'LZ',
|
|
'0' * settings.format[0], '0' * settings.format[1],
|
|
'M72' if settings.units == 'inch' else 'M71'
|
|
)
|
|
|
|
def to_inch(self):
|
|
pass
|
|
|
|
def to_metric(self):
|
|
pass
|
|
|
|
class DxfHeader2Statement(object):
|
|
def to_gerber(self, settings):
|
|
pass
|
|
|
|
def to_excellon(self, settings):
|
|
return '%'
|
|
|
|
def to_inch(self):
|
|
pass
|
|
|
|
def to_metric(self):
|
|
pass
|
|
|
|
class DxfFile(CamFile):
|
|
DM_LINE = 0
|
|
DM_FILL = 1
|
|
DM_MOUSE_BITES = 2
|
|
|
|
FT_RX274X = 0
|
|
FT_EXCELLON = 1
|
|
|
|
@classmethod
|
|
def from_dxf(cls, dxf, settings=None, draw_mode=None, filename=None):
|
|
fsettings = settings if settings else \
|
|
FileSettings(zero_suppression='leading')
|
|
|
|
if dxf.header['$INSUNITS'] == 1:
|
|
fsettings.units = 'inch'
|
|
if not settings:
|
|
fsettings.format = (2, 5)
|
|
else:
|
|
fsettings.units = 'metric'
|
|
if not settings:
|
|
fsettings.format = (3, 4)
|
|
|
|
statements = []
|
|
for entity in dxf.entities:
|
|
if entity.dxftype == 'LWPOLYLINE':
|
|
statements.append(DxfPolylineStatement(entity))
|
|
elif entity.dxftype == 'LINE':
|
|
statements.append(DxfLineStatement.from_entity(entity))
|
|
elif entity.dxftype == 'CIRCLE':
|
|
statements.append(DxfCircleStatement(entity))
|
|
elif entity.dxftype == 'ARC':
|
|
statements.append(DxfArcStatement(entity))
|
|
|
|
return cls(statements, fsettings, draw_mode, filename)
|
|
|
|
@classmethod
|
|
def rectangle(cls, width, height, left=0, bottom=0, units='metric', draw_mode=None, filename=None):
|
|
if units == 'metric':
|
|
settings = FileSettings(units=units, zero_suppression='leading', format=(3,4))
|
|
else:
|
|
settings = FileSettings(units=units, zero_suppression='leading', format=(2,5))
|
|
statements = [
|
|
DxfLineStatement(None, (left, bottom), (left + width, bottom)),
|
|
DxfLineStatement(None, (left + width, bottom), (left + width, bottom + height)),
|
|
DxfLineStatement(None, (left + width, bottom + height), (left, bottom + height)),
|
|
DxfLineStatement(None, (left, bottom + height), (left, bottom)),
|
|
]
|
|
return cls(statements, settings, draw_mode, filename)
|
|
|
|
def __init__(self, statements, settings=None, draw_mode=None, filename=None):
|
|
if not settings:
|
|
settings = FileSettings(units='metric', format=(3,4), zero_suppression='leading')
|
|
if draw_mode == None:
|
|
draw_mode = self.DM_LINE
|
|
|
|
super(DxfFile, self).__init__(settings=settings, filename=filename)
|
|
self._draw_mode = draw_mode
|
|
self.header = DxfHeaderStatement()
|
|
|
|
self.header2 = DxfHeader2Statement()
|
|
self.aperture = ADParamStmt.circle(dcode=10, diameter=0.0)
|
|
self.statements = DxfStatements(
|
|
statements, self.units, dcode=self.aperture.d, draw_mode=self.draw_mode)
|
|
|
|
@property
|
|
def dcode(self):
|
|
return self.aperture.dcode
|
|
|
|
@dcode.setter
|
|
def dcode(self, value):
|
|
self.aperture.d = value
|
|
self.statements.dcode = value
|
|
|
|
@property
|
|
def width(self):
|
|
return self.aperture.modifiers[0][0]
|
|
|
|
@width.setter
|
|
def width(self, value):
|
|
self.aperture.modifiers = ([float(value),],)
|
|
self.statements.width = value
|
|
|
|
@property
|
|
def draw_mode(self):
|
|
return self._draw_mode
|
|
|
|
@draw_mode.setter
|
|
def draw_mode(self, value):
|
|
self._draw_mode = value
|
|
self.statements.draw_mode = value
|
|
|
|
@property
|
|
def pitch(self):
|
|
return self.statements.pitch
|
|
|
|
@pitch.setter
|
|
def pitch(self, value):
|
|
self.statements.pitch = value
|
|
|
|
def write(self, filename=None, filetype=FT_RX274X):
|
|
if self.settings.notation != 'absolute':
|
|
raise Exception('DXF file\'s notation must be absolute ')
|
|
|
|
filename = filename if filename is not None else self.filename
|
|
with open(filename, 'w') as f:
|
|
if filetype == self.FT_RX274X:
|
|
f.write(self.header.to_gerber(self.settings) + '\n')
|
|
f.write(self.aperture.to_gerber(self.settings) + '\n')
|
|
f.write(self.statements.to_gerber(self.settings) + '\n')
|
|
f.write('M02*\n')
|
|
else:
|
|
tool = ExcellonTool(self.settings, number=1, diameter=self.width)
|
|
f.write(self.header.to_excellon(self.settings) + '\n')
|
|
f.write(tool.to_excellon(self.settings) + '\n')
|
|
f.write(self.header2.to_excellon(self.settings) + '\n')
|
|
f.write('T01\n')
|
|
f.write(self.statements.to_excellon(self.settings) + '\n')
|
|
f.write('M30\n')
|
|
|
|
|
|
def to_inch(self):
|
|
if self.units == 'metric':
|
|
self.header.to_inch()
|
|
self.aperture.to_inch()
|
|
self.statements.to_inch()
|
|
self.pitch = inch(self.pitch)
|
|
self.units = 'inch'
|
|
|
|
def to_metric(self):
|
|
if self.units == 'inch':
|
|
self.header.to_metric()
|
|
self.aperture.to_metric()
|
|
self.statements.to_metric()
|
|
self.pitch = metric(self.pitch)
|
|
self.units = 'metric'
|
|
|
|
def offset(self, offset_x, offset_y):
|
|
self.statements.offset(offset_x, offset_y)
|
|
|
|
def rotate(self, angle, center=(0, 0)):
|
|
self.statements.rotate(angle, center)
|
|
|
|
def loads(data, filename=None):
|
|
if sys.version_info.major == 2:
|
|
data = unicode(data)
|
|
stream = io.StringIO(data)
|
|
dxf = dxfgrabber.read(stream)
|
|
return DxfFile.from_dxf(dxf)
|