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| author | Hamilton Kibbe <hamilton.kibbe@gmail.com> | 2014-09-28 13:04:32 -0400 |
|---|---|---|
| committer | Hamilton Kibbe <hamilton.kibbe@gmail.com> | 2014-09-28 13:04:32 -0400 |
| commit | 43b599106f746dd42423eda1f91a592813ecc224 (patch) | |
| tree | 0a8d7673ac30655205f6e369a6fecdaf24ae4986 /gerber/excellon.py | |
| parent | 858fc5f6d82c58f4af966c27299e51dd6ba1c097 (diff) | |
| download | gerbonara-43b599106f746dd42423eda1f91a592813ecc224.tar.gz gerbonara-43b599106f746dd42423eda1f91a592813ecc224.tar.bz2 gerbonara-43b599106f746dd42423eda1f91a592813ecc224.zip | |
Add Excellon support
Diffstat (limited to 'gerber/excellon.py')
| -rwxr-xr-x | gerber/excellon.py | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/gerber/excellon.py b/gerber/excellon.py new file mode 100755 index 0000000..1e746ad --- /dev/null +++ b/gerber/excellon.py @@ -0,0 +1,180 @@ +#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+# Copyright 2014 Hamilton Kibbe <ham@hamiltonkib.be>
+
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+
+# http://www.apache.org/licenses/LICENSE-2.0
+
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+import re
+from itertools import tee, izip
+from .utils import parse_gerber_value
+
+
+
+
+class Tool(object):
+
+ @classmethod
+ def from_line(cls, line, settings):
+ commands = re.split('([BCFHSTZ])', line)[1:]
+ commands = [(command, value) for command, value in pairwise(commands)]
+ args = {}
+ format = settings['format']
+ zero_suppression = settings['zero_suppression']
+ for cmd, val in commands:
+ if cmd == 'B':
+ args['retract_rate'] = parse_gerber_value(val, format, zero_suppression)
+ elif cmd == 'C':
+ args['diameter'] = parse_gerber_value(val, format, zero_suppression)
+ elif cmd == 'F':
+ args['feed_rate'] = parse_gerber_value(val, format, zero_suppression)
+ elif cmd == 'H':
+ args['max_hit_count'] = parse_gerber_value(val, format, zero_suppression)
+ elif cmd == 'S':
+ args['rpm'] = 1000 * parse_gerber_value(val, format, zero_suppression)
+ elif cmd == 'T':
+ args['number'] = int(val)
+ elif cmd == 'Z':
+ args['depth_offset'] = parse_gerber_value(val, format, zero_suppression)
+ return cls(settings, **args)
+
+ def __init__(self, settings, **kwargs):
+ self.number = kwargs.get('number')
+ self.feed_rate = kwargs.get('feed_rate')
+ self.retract_rate = kwargs.get('retract_rate')
+ self.rpm = kwargs.get('rpm')
+ self.diameter = kwargs.get('diameter')
+ self.max_hit_count = kwargs.get('max_hit_count')
+ self.depth_offset = kwargs.get('depth_offset')
+ self.units = settings.get('units', 'inch')
+
+ def __repr__(self):
+ unit = 'in.' if self.units == 'inch' else 'mm'
+ return '<Tool %d: %0.3f%s dia.>' % (self.number, self.diameter, unit)
+
+
+
+class ExcellonParser(object):
+ def __init__(self, ctx=None):
+ self.ctx=ctx
+ self.notation = 'absolute'
+ self.units = 'inch'
+ self.zero_suppression = 'trailing'
+ self.format = (2,5)
+ self.state = 'INIT'
+ self.tools = {}
+ self.hits = []
+ self.active_tool = None
+ self.pos = [0., 0.]
+ if ctx is not None:
+ zeros = 'L' if self.zero_suppression == 'leading' else 'T'
+ x = self.format
+ y = self.format
+ self.ctx.set_coord_format(zeros, x, y)
+ def parse(self, filename):
+ with open(filename, 'r') as f:
+ for line in f:
+ self._parse(line)
+
+ def dump(self, filename='teste.svg'):
+ if self.ctx is not None:
+ self.ctx.dump(filename)
+
+ def _parse(self, line):
+ if 'M48' in line:
+ self.state = 'HEADER'
+
+ if 'G00' in line:
+ self.state = 'ROUT'
+
+ if 'G05' in line:
+ self.state = 'DRILL'
+
+ elif line[0] == '%' and self.state == 'HEADER':
+ self.state = 'DRILL'
+
+ if 'INCH' in line or line.strip() == 'M72':
+ self.units = 'inch'
+
+ elif 'METRIC' in line or line.strip() == 'M71':
+ self.units = 'metric'
+
+ if 'LZ' in line:
+ self.zero_suppression = 'trailing'
+
+ elif 'TZ' in line:
+ self.zero_suppression = 'leading'
+
+ if 'ICI' in line and 'ON' in line or line.strip() == 'G91':
+ self.notation = 'incremental'
+
+ if 'ICI' in line and 'OFF' in line or line.strip() == 'G90':
+ self.notation = 'absolute'
+
+ zs = self._settings()['zero_suppression']
+ fmt = self._settings()['format']
+
+ # tool definition
+ if line[0] == 'T' and self.state == 'HEADER':
+ tool = Tool.from_line(line,self._settings())
+ self.tools[tool.number] = tool
+
+ elif line[0] == 'T' and self.state != 'HEADER':
+ self.active_tool = self.tools[int(line.strip().split('T')[1])]
+
+
+ if line[0] in ['X', 'Y']:
+ x = None
+ y = None
+ if line[0] == 'X':
+ splitline = line.strip('X').split('Y')
+ x = parse_gerber_value(splitline[0].strip(), fmt, zs)
+ if len(splitline) == 2:
+ y = parse_gerber_value(splitline[1].strip(), fmt,zs)
+ else:
+ y = parse_gerber_value(line.strip(' Y'), fmt,zs)
+
+ if self.notation == 'absolute':
+ if x is not None:
+ self.pos[0] = x
+ if y is not None:
+ self.pos[1] = y
+ else:
+ if x is not None:
+ self.pos[0] += x
+ if y is not None:
+ self.pos[1] += y
+ if self.state == 'DRILL':
+ self.hits.append((self.active_tool, self.pos))
+ if self.ctx is not None:
+ self.ctx.drill(self.pos[0], self.pos[1],
+ self.active_tool.diameter)
+
+ def _settings(self):
+ return {'units':self.units, 'zero_suppression':self.zero_suppression,
+ 'format': self.format}
+
+def pairwise(iterator):
+ itr = iter(iterator)
+ while True:
+ yield tuple([itr.next() for i in range(2)])
+
+if __name__ == '__main__':
+ from .render_svg import GerberSvgContext
+ tools = []
+ p = ExcellonParser(GerberSvgContext())
+ p.parse('examples/ncdrill.txt')
+ p.dump('excellon.svg')
+
+
\ No newline at end of file |