added ExcellonFile class
This commit is contained in:
Hamilton Kibbe
parent
695e3d9220
commit
3a5dbcf1e1
10 changed files with 345 additions and 265 deletions
9
Makefile
9
Makefile
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@ -2,6 +2,7 @@
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PYTHON ?= python
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NOSETESTS ?= nosetests
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DOC_ROOT = doc
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clean:
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#$(PYTHON) setup.py clean
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@ -15,3 +16,11 @@ test-coverage:
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rm -rf coverage .coverage
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$(NOSETESTS) -s -v --with-coverage gerber
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doc-html:
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(cd $(DOC_ROOT); make html)
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doc-clean:
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(cd $(DOC_ROOT); make clean)
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@ -14,3 +14,18 @@
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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def read(filename):
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""" Read a gerber or excellon file and return a representative object.
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"""
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import gerber
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import excellon
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from utils import detect_file_format
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fmt = detect_file_format(filename)
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if fmt == 'rs274x':
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return gerber.read(filename)
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elif fmt == 'excellon':
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return excellon.read(filename)
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else:
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return None
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@ -10,10 +10,10 @@
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# http://www.apache.org/licenses/LICENSE-2.0
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations under
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# the License.
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if __name__ == '__main__':
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from .gerber import GerberFile
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@ -34,5 +34,3 @@ if __name__ == '__main__':
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p = ExcellonParser(ctx)
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p.parse('ncdrill.txt')
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p.dump('testwithdrill.svg')
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@ -2,19 +2,60 @@
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import re
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from itertools import tee, izip
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from .utils import parse_gerber_value
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INCH = 0
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METRIC = 1
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ABSOLUTE = 0
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INCREMENTAL = 1
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LZ = 0
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TZ = 1
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def read(filename):
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""" Read data from filename and return an ExcellonFile
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"""
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return ExcellonParser().parse(filename)
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class ExcellonFile(object):
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""" A class representing a single excellon file
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The ExcellonFile class represents a single excellon file.
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Parameters
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----------
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tools : list
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list of gerber file statements
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hits : list of tuples
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list of drill hits as (<Tool>, (x, y))
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settings : dict
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Dictionary of gerber file settings
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filename : string
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Filename of the source gerber file
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Attributes
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----------
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units : string
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either 'inch' or 'metric'.
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"""
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def __init__(self, tools, hits, settings, filename):
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self.tools = tools
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self.hits = hits
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self.settings = settings
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self.filename = filename
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def report(self):
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""" Print drill report
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"""
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pass
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def render(self, filename, ctx):
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""" Generate image of file
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"""
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for tool, pos in self.hits:
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ctx.drill(pos[0], pos[1], tool.diameter)
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ctx.dump(filename)
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class Tool(object):
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""" Excellon Tool class
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"""
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@classmethod
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def from_line(cls, line, settings):
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commands = re.split('([BCFHSTZ])', line)[1:]
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@ -38,7 +79,7 @@ class Tool(object):
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elif cmd == 'Z':
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args['depth_offset'] = parse_gerber_value(val, format, zero_suppression)
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return cls(settings, **args)
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def __init__(self, settings, **kwargs):
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self.number = kwargs.get('number')
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self.feed_rate = kwargs.get('feed_rate')
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@ -47,79 +88,83 @@ class Tool(object):
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self.diameter = kwargs.get('diameter')
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self.max_hit_count = kwargs.get('max_hit_count')
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self.depth_offset = kwargs.get('depth_offset')
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self.units = settings.get('units', INCH)
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self.units = settings.get('units', 'inch')
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def __repr__(self):
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unit = 'in.' if self.units == INCH else 'mm'
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unit = 'in.' if self.units == 'inch' else 'mm'
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return '<Tool %d: %0.3f%s dia.>' % (self.number, self.diameter, unit)
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class ExcellonParser(object):
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def __init__(self, ctx=None):
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self.ctx=ctx
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self.ctx = ctx
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self.notation = 'absolute'
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self.units = 'inch'
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self.zero_suppression = 'trailing'
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self.format = (2,5)
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self.format = (2, 5)
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self.state = 'INIT'
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self.tools = {}
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self.tools = []
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self.hits = []
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self.active_tool = None
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self.pos = [0., 0.]
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if ctx is not None:
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self.ctx.set_coord_format(zero_suppression='trailing', format=[2,5], notation='absolute')
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self.ctx.set_coord_format(zero_suppression='trailing',
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format=(2, 5), notation='absolute')
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def parse(self, filename):
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with open(filename, 'r') as f:
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for line in f:
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self._parse(line)
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settings = {'notation': self.notation, 'units': self.units,
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'zero_suppression': self.zero_suppression,
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'format': self.format}
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return ExcellonFile(self.tools, self.hits, settings, filename)
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def dump(self, filename):
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self.ctx.dump(filename)
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def _parse(self, line):
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if 'M48' in line:
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self.state = 'HEADER'
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if 'G00' in line:
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self.state = 'ROUT'
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if 'G05' in line:
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self.state = 'DRILL'
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elif line[0] == '%' and self.state == 'HEADER':
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self.state = 'DRILL'
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if 'INCH' in line or line.strip() == 'M72':
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self.units = 'INCH'
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self.units = 'inch'
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elif 'METRIC' in line or line.strip() == 'M71':
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self.units = 'METRIC'
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self.units = 'metric'
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if 'LZ' in line:
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self.zeros = 'L'
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elif 'TZ' in line:
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self.zeros = 'T'
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if 'ICI' in line and 'ON' in line or line.strip() == 'G91':
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self.notation = 'incremental'
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if 'ICI' in line and 'OFF' in line or line.strip() == 'G90':
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self.notation = 'incremental'
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zs = self._settings()['zero_suppression']
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fmt = self._settings()['format']
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# tool definition
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if line[0] == 'T' and self.state == 'HEADER':
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tool = Tool.from_line(line,self._settings())
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tool = Tool.from_line(line, self._settings())
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self.tools[tool.number] = tool
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elif line[0] == 'T' and self.state != 'HEADER':
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self.active_tool = self.tools[int(line.strip().split('T')[1])]
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if line[0] in ['X', 'Y']:
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x = None
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y = None
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@ -127,10 +172,9 @@ class ExcellonParser(object):
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splitline = line.strip('X').split('Y')
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x = parse_gerber_value(splitline[0].strip(), fmt, zs)
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if len(splitline) == 2:
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y = parse_gerber_value(splitline[1].strip(), fmt,zs)
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y = parse_gerber_value(splitline[1].strip(), fmt, zs)
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else:
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y = parse_gerber_value(line.strip(' Y'), fmt,zs)
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y = parse_gerber_value(line.strip(' Y'), fmt, zs)
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if self.notation == 'absolute':
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if x is not None:
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self.pos[0] = x
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@ -146,20 +190,17 @@ class ExcellonParser(object):
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if self.ctx is not None:
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self.ctx.drill(self.pos[0], self.pos[1],
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self.active_tool.diameter)
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def _settings(self):
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return {'units':self.units, 'zero_suppression':self.zero_suppression,
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return {'units': self.units, 'zero_suppression': self.zero_suppression,
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'format': self.format}
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def pairwise(iterator):
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itr = iter(iterator)
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while True:
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yield tuple([itr.next() for i in range(2)])
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if __name__ == '__main__':
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tools = []
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settings = {'units':INCH, 'zeros':LZ}
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p = parser()
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p.parse('examples/ncdrill.txt')
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@ -3,7 +3,7 @@
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# copyright 2014 Hamilton Kibbe <ham@hamiltonkib.be>
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# Modified from parser.py by Paulo Henrique Silva <ph.silva@gmail.com>
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#
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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@ -15,33 +15,41 @@
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""
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gerber.gerber
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============
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**Gerber File module**
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This module provides an RS-274-X class and parser
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"""
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import re
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import json
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from .statements import *
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def read(filename):
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""" Read data from filename and return a GerberFile
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"""
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return GerberParser().parse(filename)
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class GerberFile(object):
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""" A class representing a single gerber file
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The GerberFile class represents a single gerber file.
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The GerberFile class represents a single gerber file.
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Parameters
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----------
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filename : string
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Parameter.
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zero_suppression : string
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Zero-suppression mode. May be either 'leading' or 'trailing'
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statements : list
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list of gerber file statements
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notation : string
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Notation mode. May be either 'absolute' or 'incremental'
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format : tuple (int, int)
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Gerber precision format expressed as a tuple containing:
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(number of integer-part digits, number of decimal-part digits)
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settings : dict
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Dictionary of gerber file settings
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filename : string
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Filename of the source gerber file
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Attributes
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----------
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@ -50,7 +58,7 @@ class GerberFile(object):
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units : string
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either 'inch' or 'metric'.
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size : tuple, (<float>, <float>)
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Size in [self.units] of the layer described by the gerber file.
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@ -59,32 +67,25 @@ class GerberFile(object):
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`bounds` is stored as ((min x, max x), (min y, max y))
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"""
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@classmethod
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def read(cls, filename):
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""" Read data from filename and return a GerberFile
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"""
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return GerberParser().parse(filename)
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def __init__(self, statements, settings, filename=None):
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self.filename = filename
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self.statements = statements
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self.settings = settings
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@property
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def comments(self):
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return [comment.comment for comment in self.statements
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if isinstance(comment, CommentStmt)]
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@property
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def units(self):
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return self.settings['units']
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@property
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def size(self):
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xbounds, ybounds = self.bounds
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return (xbounds[1] - xbounds[0], ybounds[1] - ybounds[0])
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@property
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def bounds(self):
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xbounds = [0.0, 0.0]
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@ -106,9 +107,8 @@ class GerberFile(object):
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ybounds[0] = stmt.j
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if stmt.j is not None and stmt.j > ybounds[1]:
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ybounds[1] = stmt.j
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return (xbounds, ybounds)
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return (xbounds, ybounds)
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def write(self, filename):
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""" Write data out to a gerber file
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"""
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@ -123,8 +123,7 @@ class GerberFile(object):
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for statement in self.statements:
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ctx.evaluate(statement)
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ctx.dump(filename)
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class GerberParser(object):
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""" GerberParser
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@ -179,7 +178,7 @@ class GerberParser(object):
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for stmt in self._parse(data):
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self.statements.append(stmt)
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return GerberFile(self.statements, self.settings, filename)
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def dump_json(self):
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@ -197,7 +196,7 @@ class GerberParser(object):
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for i, line in enumerate(data):
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line = oldline + line.strip()
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# skip empty lines
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if not len(line):
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continue
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@ -207,10 +206,10 @@ class GerberParser(object):
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oldline = line
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continue
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did_something = True # make sure we do at least one loop
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did_something = True # make sure we do at least one loop
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while did_something and len(line) > 0:
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did_something = False
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# coord
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(coord, r) = self._match_one(self.COORD_STMT, line)
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if coord:
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@ -223,7 +222,7 @@ class GerberParser(object):
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(aperture, r) = self._match_one(self.APERTURE_STMT, line)
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if aperture:
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yield ApertureStmt(**aperture)
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did_something = True
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line = r
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continue
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@ -240,7 +239,7 @@ class GerberParser(object):
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(param, r) = self._match_one_from_many(self.PARAM_STMT, line)
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if param:
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if param["param"] == "FS":
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stmt = FSParamStmt.from_dict(param)
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stmt = FSParamStmt.from_dict(param)
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self.settings = {'zero_suppression': stmt.zero_suppression,
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'format': stmt.format,
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'notation': stmt.notation}
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@ -276,7 +275,7 @@ class GerberParser(object):
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did_something = True
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line = r
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continue
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if False:
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print self.COORD_STMT.pattern
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print self.APERTURE_STMT.pattern
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@ -29,7 +29,7 @@ class Aperture(object):
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"""
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def draw(self, ctx, x, y):
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raise NotImplementedError('The draw method must be implemented in an Aperture subclass.')
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def flash(self, ctx, x, y):
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raise NotImplementedError('The flash method must be implemented in an Aperture subclass.')
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@ -40,19 +40,22 @@ class Circle(Aperture):
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def __init__(self, diameter=0.0):
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self.diameter = diameter
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class Rect(Aperture):
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""" Rectangular Aperture base class
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"""
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def __init__(self, size=(0, 0)):
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self.size = size
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class Obround(Aperture):
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""" Obround Aperture base class
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"""
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def __init__(self, size=(0, 0)):
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self.size = size
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class Polygon(Aperture):
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""" Polygon Aperture base class
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"""
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pass
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pass
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@ -34,11 +34,11 @@ class GerberContext(object):
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level_polarity = 'dark'
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def __init__(self):
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pass
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pass
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def set_format(self, settings):
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self.settings = settings
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def set_coord_format(self, zero_suppression, format, notation):
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self.settings['zero_suppression'] = zero_suppression
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self.settings['format'] = format
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|
|
@ -52,9 +52,9 @@ class GerberContext(object):
|
|||
|
||||
def set_image_polarity(self, polarity):
|
||||
self.image_polarity = polarity
|
||||
|
||||
|
||||
def set_level_polarity(self, polarity):
|
||||
self.level_polarity = polarity
|
||||
self.level_polarity = polarity
|
||||
|
||||
def set_interpolation(self, interpolation):
|
||||
self.interpolation = 'linear' if interpolation in ("G01", "G1") else 'arc'
|
||||
|
|
@ -63,8 +63,8 @@ class GerberContext(object):
|
|||
self.aperture = d
|
||||
|
||||
def resolve(self, x, y):
|
||||
return x or self.x, y or self.y
|
||||
|
||||
return x or self.x, y or self.y
|
||||
|
||||
def define_aperture(self, d, shape, modifiers):
|
||||
pass
|
||||
|
||||
|
|
|
|||
|
|
@ -33,8 +33,8 @@ class SvgCircle(Circle):
|
|||
|
||||
def flash(self, ctx, x, y):
|
||||
return [ctx.dwg.circle(center=(x * SCALE, -y * SCALE),
|
||||
r = SCALE * (self.diameter / 2.0),
|
||||
fill='rgb(184, 115, 51)'),]
|
||||
r = SCALE * (self.diameter / 2.0),
|
||||
fill='rgb(184, 115, 51)'), ]
|
||||
|
||||
|
||||
class SvgRect(Rect):
|
||||
|
|
@ -47,41 +47,42 @@ class SvgRect(Rect):
|
|||
def flash(self, ctx, x, y):
|
||||
xsize, ysize = self.size
|
||||
return [ctx.dwg.rect(insert=(SCALE * (x - (xsize / 2)),
|
||||
-SCALE * (y + (ysize / 2))),
|
||||
size=(SCALE * xsize, SCALE * ysize),
|
||||
fill="rgb(184, 115, 51)"),]
|
||||
-SCALE * (y + (ysize / 2))),
|
||||
size=(SCALE * xsize, SCALE * ysize),
|
||||
fill="rgb(184, 115, 51)"), ]
|
||||
|
||||
|
||||
class SvgObround(Obround):
|
||||
def draw(self, ctx, x, y):
|
||||
pass
|
||||
|
||||
|
||||
def flash(self, ctx, x, y):
|
||||
xsize, ysize = self.size
|
||||
|
||||
|
||||
# horizontal obround
|
||||
if xsize == ysize:
|
||||
return [ctx.dwg.circle(center=(x * SCALE, -y * SCALE),
|
||||
r = SCALE * (x / 2.0),
|
||||
fill='rgb(184, 115, 51)'),]
|
||||
r = SCALE * (x / 2.0),
|
||||
fill='rgb(184, 115, 51)'), ]
|
||||
if xsize > ysize:
|
||||
rectx = xsize - ysize
|
||||
recty = ysize
|
||||
lcircle = ctx.dwg.circle(center=((x - (rectx / 2.0)) * SCALE,
|
||||
-y * SCALE),
|
||||
-y * SCALE),
|
||||
r = SCALE * (ysize / 2.0),
|
||||
fill='rgb(184, 115, 51)')
|
||||
|
||||
|
||||
rcircle = ctx.dwg.circle(center=((x + (rectx / 2.0)) * SCALE,
|
||||
-y * SCALE),
|
||||
-y * SCALE),
|
||||
r = SCALE * (ysize / 2.0),
|
||||
fill='rgb(184, 115, 51)')
|
||||
|
||||
|
||||
rect = ctx.dwg.rect(insert=(SCALE * (x - (xsize / 2.)),
|
||||
-SCALE * (y + (ysize / 2.))),
|
||||
size=(SCALE * xsize, SCALE * ysize),
|
||||
fill='rgb(184, 115, 51)')
|
||||
return [lcircle, rcircle, rect,]
|
||||
|
||||
return [lcircle, rcircle, rect, ]
|
||||
|
||||
# Vertical obround
|
||||
else:
|
||||
rectx = xsize
|
||||
|
|
@ -90,18 +91,18 @@ class SvgObround(Obround):
|
|||
(y - (recty / 2.)) * -SCALE),
|
||||
r = SCALE * (xsize / 2.),
|
||||
fill='rgb(184, 115, 51)')
|
||||
|
||||
|
||||
ucircle = ctx.dwg.circle(center=(x * SCALE,
|
||||
(y + (recty / 2.)) * -SCALE),
|
||||
r = SCALE * (xsize / 2.),
|
||||
fill='rgb(184, 115, 51)')
|
||||
|
||||
|
||||
rect = ctx.dwg.rect(insert=(SCALE * (x - (xsize / 2.)),
|
||||
-SCALE * (y + (ysize / 2.))),
|
||||
size=(SCALE * xsize, SCALE * ysize),
|
||||
fill='rgb(184, 115, 51)')
|
||||
return [lcircle, ucircle, rect,]
|
||||
|
||||
return [lcircle, ucircle, rect, ]
|
||||
|
||||
|
||||
class GerberSvgContext(GerberContext):
|
||||
def __init__(self):
|
||||
|
|
@ -112,10 +113,9 @@ class GerberSvgContext(GerberContext):
|
|||
#self.dwg.add(self.dwg.rect(insert=(0, 0), size=(2000, 2000), fill="black"))
|
||||
|
||||
def set_bounds(self, bounds):
|
||||
xbounds, ybounds = bounds
|
||||
xbounds, ybounds = bounds
|
||||
size = (SCALE * (xbounds[1] - xbounds[0]), SCALE * (ybounds[1] - ybounds[0]))
|
||||
self.dwg.add(self.dwg.rect(insert=(SCALE * xbounds[0], -SCALE * ybounds[1]), size=size, fill="black"))
|
||||
|
||||
|
||||
def define_aperture(self, d, shape, modifiers):
|
||||
aperture = None
|
||||
|
|
@ -133,8 +133,7 @@ class GerberSvgContext(GerberContext):
|
|||
if self.interpolation == 'linear':
|
||||
self.line(x, y)
|
||||
elif self.interpolation == 'arc':
|
||||
#self.arc(x, y)
|
||||
self.line(x,y)
|
||||
self.arc(x, y)
|
||||
|
||||
def line(self, x, y):
|
||||
super(GerberSvgContext, self).line(x, y)
|
||||
|
|
@ -145,11 +144,9 @@ class GerberSvgContext(GerberContext):
|
|||
self.dwg.add(ap.draw(self, x, y))
|
||||
self.move(x, y, resolve=False)
|
||||
|
||||
|
||||
def arc(self, x, y):
|
||||
super(GerberSvgContext, self).arc(x, y)
|
||||
|
||||
|
||||
def flash(self, x, y):
|
||||
super(GerberSvgContext, self).flash(x, y)
|
||||
x, y = self.resolve(x, y)
|
||||
|
|
@ -160,12 +157,9 @@ class GerberSvgContext(GerberContext):
|
|||
self.dwg.add(shape)
|
||||
self.move(x, y, resolve=False)
|
||||
|
||||
|
||||
def drill(self, x, y, diameter):
|
||||
hit = self.dwg.circle(center=(x*SCALE, -y*SCALE), r=SCALE*(diameter/2.0), fill='gray')
|
||||
self.dwg.add(hit)
|
||||
|
||||
def dump(self, filename):
|
||||
self.dwg.saveas(filename)
|
||||
|
||||
|
||||
|
|
|
|||
|
|
@ -3,18 +3,18 @@
|
|||
"""
|
||||
gerber.statements
|
||||
=================
|
||||
**Gerber file statement classes **
|
||||
**Gerber file statement classes**
|
||||
|
||||
"""
|
||||
from .utils import parse_gerber_value, write_gerber_value, decimal_string
|
||||
|
||||
|
||||
|
||||
__all__ = ['FSParamStmt', 'MOParamStmt','IPParamStmt', 'OFParamStmt',
|
||||
__all__ = ['FSParamStmt', 'MOParamStmt', 'IPParamStmt', 'OFParamStmt',
|
||||
'LPParamStmt', 'ADParamStmt', 'AMParamStmt', 'INParamStmt',
|
||||
'LNParamStmt', 'CoordStmt', 'ApertureStmt', 'CommentStmt',
|
||||
'EofStmt', 'UnknownStmt']
|
||||
|
||||
|
||||
class Statement(object):
|
||||
def __init__(self, type):
|
||||
self.type = type
|
||||
|
|
@ -38,15 +38,15 @@ class ParamStmt(Statement):
|
|||
class FSParamStmt(ParamStmt):
|
||||
""" FS - Gerber Format Specification Statement
|
||||
"""
|
||||
|
||||
|
||||
@classmethod
|
||||
def from_dict(cls, stmt_dict):
|
||||
"""
|
||||
"""
|
||||
"""
|
||||
param = stmt_dict.get('param').strip()
|
||||
zeros = 'leading' if stmt_dict.get('zero') == 'L' else 'trailing'
|
||||
notation = 'absolute' if stmt_dict.get('notation') == 'A' else 'incremental'
|
||||
x = map(int,stmt_dict.get('x').strip())
|
||||
x = map(int, stmt_dict.get('x').strip())
|
||||
format = (x[0], x[1])
|
||||
if notation == 'incremental':
|
||||
print('This file uses incremental notation. To quote the gerber \
|
||||
|
|
@ -54,36 +54,36 @@ class FSParamStmt(ParamStmt):
|
|||
endless confusion. Always use absolute notation.\n\nYou \
|
||||
have been warned')
|
||||
return cls(param, zeros, notation, format)
|
||||
|
||||
|
||||
def __init__(self, param, zero_suppression='leading',
|
||||
notation='absolute', format=(2,4)):
|
||||
notation='absolute', format=(2, 4)):
|
||||
""" Initialize FSParamStmt class
|
||||
|
||||
|
||||
.. note::
|
||||
The FS command specifies the format of the coordinate data. It
|
||||
must only be used once at the beginning of a file. It must be
|
||||
specified before the first use of coordinate data.
|
||||
|
||||
|
||||
Parameters
|
||||
----------
|
||||
param : string
|
||||
Parameter.
|
||||
|
||||
|
||||
zero_suppression : string
|
||||
Zero-suppression mode. May be either 'leading' or 'trailing'
|
||||
|
||||
notation : string
|
||||
Notation mode. May be either 'absolute' or 'incremental'
|
||||
|
||||
|
||||
format : tuple (int, int)
|
||||
Gerber precision format expressed as a tuple containing:
|
||||
Gerber precision format expressed as a tuple containing:
|
||||
(number of integer-part digits, number of decimal-part digits)
|
||||
|
||||
Returns
|
||||
-------
|
||||
ParamStmt : FSParamStmt
|
||||
Initialized FSParamStmt class.
|
||||
|
||||
|
||||
"""
|
||||
ParamStmt.__init__(self, param)
|
||||
self.zero_suppression = zero_suppression
|
||||
|
|
@ -93,7 +93,7 @@ class FSParamStmt(ParamStmt):
|
|||
def to_gerber(self):
|
||||
zero_suppression = 'L' if self.zero_suppression == 'leading' else 'T'
|
||||
notation = 'A' if self.notation == 'absolute' else 'I'
|
||||
format = ''.join(map(str,self.format))
|
||||
format = ''.join(map(str, self.format))
|
||||
return '%FS{0}{1}X{2}Y{3}*%'.format(zero_suppression, notation,
|
||||
format, format)
|
||||
|
||||
|
|
@ -104,23 +104,23 @@ class FSParamStmt(ParamStmt):
|
|||
|
||||
|
||||
class MOParamStmt(ParamStmt):
|
||||
""" MO - Gerber Mode (measurement units) Statement.
|
||||
""" MO - Gerber Mode (measurement units) Statement.
|
||||
"""
|
||||
|
||||
|
||||
@classmethod
|
||||
def from_dict(cls, stmt_dict):
|
||||
param = stmt_dict.get('param')
|
||||
mo = 'inch' if stmt_dict.get('mo') == 'IN' else 'metric'
|
||||
return cls(param, mo)
|
||||
|
||||
|
||||
def __init__(self, param, mo):
|
||||
""" Initialize MOParamStmt class
|
||||
|
||||
|
||||
Parameters
|
||||
----------
|
||||
param : string
|
||||
Parameter.
|
||||
|
||||
|
||||
mo : string
|
||||
Measurement units. May be either 'inch' or 'metric'
|
||||
|
||||
|
|
@ -128,11 +128,11 @@ class MOParamStmt(ParamStmt):
|
|||
-------
|
||||
ParamStmt : MOParamStmt
|
||||
Initialized MOParamStmt class.
|
||||
|
||||
|
||||
"""
|
||||
ParamStmt.__init__(self, param)
|
||||
self.mode = mo
|
||||
|
||||
|
||||
def to_gerber(self):
|
||||
mode = 'MM' if self.mode == 'metric' else 'IN'
|
||||
return '%MO{0}*%'.format(mode)
|
||||
|
|
@ -140,7 +140,7 @@ class MOParamStmt(ParamStmt):
|
|||
def __str__(self):
|
||||
mode_str = 'millimeters' if self.mode == 'metric' else 'inches'
|
||||
return ('<Mode: %s>' % mode_str)
|
||||
|
||||
|
||||
|
||||
class IPParamStmt(ParamStmt):
|
||||
""" IP - Gerber Image Polarity Statement. (Deprecated)
|
||||
|
|
@ -150,15 +150,15 @@ class IPParamStmt(ParamStmt):
|
|||
param = stmt_dict.get('param')
|
||||
ip = 'positive' if stmt_dict.get('ip') == 'POS' else 'negative'
|
||||
return cls(param, ip)
|
||||
|
||||
|
||||
def __init__(self, param, ip):
|
||||
""" Initialize IPParamStmt class
|
||||
|
||||
|
||||
Parameters
|
||||
----------
|
||||
param : string
|
||||
Parameter string.
|
||||
|
||||
|
||||
ip : string
|
||||
Image polarity. May be either'positive' or 'negative'
|
||||
|
||||
|
|
@ -166,12 +166,11 @@ class IPParamStmt(ParamStmt):
|
|||
-------
|
||||
ParamStmt : IPParamStmt
|
||||
Initialized IPParamStmt class.
|
||||
|
||||
|
||||
"""
|
||||
ParamStmt.__init__(self, param)
|
||||
self.ip = ip
|
||||
|
||||
|
||||
def to_gerber(self):
|
||||
ip = 'POS' if self.ip == 'positive' else 'negative'
|
||||
return '%IP{0}*%'.format(ip)
|
||||
|
|
@ -183,33 +182,33 @@ class IPParamStmt(ParamStmt):
|
|||
class OFParamStmt(ParamStmt):
|
||||
""" OF - Gerber Offset statement (Deprecated)
|
||||
"""
|
||||
|
||||
|
||||
@classmethod
|
||||
def from_dict(cls, stmt_dict):
|
||||
param = stmt_dict.get('param')
|
||||
a = float(stmt_dict.get('a'))
|
||||
b = float(stmt_dict.get('b'))
|
||||
return cls(param, a, b)
|
||||
|
||||
|
||||
def __init__(self, param, a, b):
|
||||
""" Initialize OFParamStmt class
|
||||
|
||||
|
||||
Parameters
|
||||
----------
|
||||
param : string
|
||||
Parameter
|
||||
|
||||
|
||||
a : float
|
||||
Offset along the output device A axis
|
||||
|
||||
b : float
|
||||
Offset along the output device B axis
|
||||
|
||||
|
||||
Returns
|
||||
-------
|
||||
ParamStmt : OFParamStmt
|
||||
Initialized OFParamStmt class.
|
||||
|
||||
|
||||
"""
|
||||
ParamStmt.__init__(self, param)
|
||||
self.a = a
|
||||
|
|
@ -231,24 +230,25 @@ class OFParamStmt(ParamStmt):
|
|||
offset_str += ('Y: %f' % self.b)
|
||||
return ('<Offset: %s>' % offset_str)
|
||||
|
||||
|
||||
class LPParamStmt(ParamStmt):
|
||||
""" LP - Gerber Level Polarity statement
|
||||
"""
|
||||
|
||||
|
||||
@classmethod
|
||||
def from_dict(cls, stmt_dict):
|
||||
param = stmt_dict.get('lp')
|
||||
lp = 'clear' if stmt_dict.get('lp') == 'C' else 'dark'
|
||||
lp = 'clear' if stmt_dict.get('lp') == 'C' else 'dark'
|
||||
return cls(param, lp)
|
||||
|
||||
|
||||
def __init__(self, param, lp):
|
||||
""" Initialize LPParamStmt class
|
||||
|
||||
|
||||
Parameters
|
||||
----------
|
||||
param : string
|
||||
Parameter
|
||||
|
||||
|
||||
lp : string
|
||||
Level polarity. May be either 'clear' or 'dark'
|
||||
|
||||
|
|
@ -256,12 +256,11 @@ class LPParamStmt(ParamStmt):
|
|||
-------
|
||||
ParamStmt : LPParamStmt
|
||||
Initialized LPParamStmt class.
|
||||
|
||||
|
||||
"""
|
||||
ParamStmt.__init__(self, param)
|
||||
self.lp = lp
|
||||
|
||||
|
||||
def to_gerber(self, settings):
|
||||
lp = 'C' if self.lp == 'clear' else 'dark'
|
||||
return '%LP{0}*%'.format(self.lp)
|
||||
|
|
@ -273,7 +272,7 @@ class LPParamStmt(ParamStmt):
|
|||
class ADParamStmt(ParamStmt):
|
||||
""" AD - Gerber Aperture Definition Statement
|
||||
"""
|
||||
|
||||
|
||||
@classmethod
|
||||
def from_dict(cls, stmt_dict):
|
||||
param = stmt_dict.get('param')
|
||||
|
|
@ -282,38 +281,36 @@ class ADParamStmt(ParamStmt):
|
|||
modifiers = stmt_dict.get('modifiers')
|
||||
if modifiers is not None:
|
||||
modifiers = [[float(x) for x in m.split('X')]
|
||||
for m in modifiers.split(',')]
|
||||
for m in modifiers.split(',')]
|
||||
return cls(param, d, shape, modifiers)
|
||||
|
||||
|
||||
|
||||
def __init__(self, param, d, shape, modifiers):
|
||||
""" Initialize ADParamStmt class
|
||||
|
||||
|
||||
Parameters
|
||||
----------
|
||||
param : string
|
||||
Parameter code
|
||||
|
||||
|
||||
d : int
|
||||
Aperture D-code
|
||||
|
||||
shape : string
|
||||
aperture name
|
||||
|
||||
|
||||
modifiers : list of lists of floats
|
||||
Shape modifiers
|
||||
|
||||
|
||||
Returns
|
||||
-------
|
||||
ParamStmt : LPParamStmt
|
||||
Initialized LPParamStmt class.
|
||||
|
||||
|
||||
"""
|
||||
ParamStmt.__init__(self, param)
|
||||
self.d = d
|
||||
self.shape = shape
|
||||
self.modifiers = modifiers
|
||||
|
||||
self.modifiers = modifiers
|
||||
|
||||
def to_gerber(self, settings):
|
||||
return '%ADD{0}{1},{2}*%'.format(self.d, self.shape,
|
||||
|
|
@ -328,72 +325,72 @@ class ADParamStmt(ParamStmt):
|
|||
shape = 'oblong'
|
||||
else:
|
||||
shape = self.shape
|
||||
|
||||
|
||||
return '<Aperture Definition: %d: %s>' % (self.d, shape)
|
||||
|
||||
|
||||
class AMParamStmt(ParamStmt):
|
||||
""" AM - Aperture Macro Statement
|
||||
"""
|
||||
|
||||
|
||||
@classmethod
|
||||
def from_dict(cls, stmt_dict):
|
||||
return cls(**stmt_dict)
|
||||
|
||||
|
||||
def __init__(self, param, name, macro):
|
||||
""" Initialize AMParamStmt class
|
||||
|
||||
|
||||
Parameters
|
||||
----------
|
||||
param : string
|
||||
Parameter code
|
||||
|
||||
|
||||
name : string
|
||||
Aperture macro name
|
||||
|
||||
macro : string
|
||||
Aperture macro string
|
||||
|
||||
|
||||
Returns
|
||||
-------
|
||||
ParamStmt : AMParamStmt
|
||||
Initialized AMParamStmt class.
|
||||
|
||||
|
||||
"""
|
||||
ParamStmt.__init__(self, param)
|
||||
self.name = name
|
||||
self.macro = macro
|
||||
|
||||
|
||||
def to_gerber(self):
|
||||
return '%AM{0}*{1}*%'.format(self.name, self.macro)
|
||||
|
||||
def __str__(self):
|
||||
return '<Aperture Macro %s: %s>' % (self.name, macro)
|
||||
|
||||
|
||||
|
||||
|
||||
class INParamStmt(ParamStmt):
|
||||
""" IN - Image Name Statement
|
||||
"""
|
||||
@classmethod
|
||||
def from_dict(cls, stmt_dict):
|
||||
return cls(**stmt_dict)
|
||||
|
||||
|
||||
def __init__(self, param, name):
|
||||
""" Initialize INParamStmt class
|
||||
|
||||
|
||||
Parameters
|
||||
----------
|
||||
param : string
|
||||
Parameter code
|
||||
|
||||
|
||||
name : string
|
||||
Image name
|
||||
|
||||
|
||||
Returns
|
||||
-------
|
||||
ParamStmt : INParamStmt
|
||||
Initialized INParamStmt class.
|
||||
|
||||
|
||||
"""
|
||||
ParamStmt.__init__(self, param)
|
||||
self.name = name
|
||||
|
|
@ -404,29 +401,30 @@ class INParamStmt(ParamStmt):
|
|||
def __str__(self):
|
||||
return '<Image Name: %s>' % self.name
|
||||
|
||||
|
||||
class LNParamStmt(ParamStmt):
|
||||
""" LN - Level Name Statement (Deprecated)
|
||||
"""
|
||||
@classmethod
|
||||
def from_dict(cls, stmt_dict):
|
||||
return cls(**stmt_dict)
|
||||
|
||||
|
||||
def __init__(self, param, name):
|
||||
""" Initialize LNParamStmt class
|
||||
|
||||
|
||||
Parameters
|
||||
----------
|
||||
param : string
|
||||
Parameter code
|
||||
|
||||
|
||||
name : string
|
||||
Level name
|
||||
|
||||
|
||||
Returns
|
||||
-------
|
||||
ParamStmt : LNParamStmt
|
||||
Initialized LNParamStmt class.
|
||||
|
||||
|
||||
"""
|
||||
ParamStmt.__init__(self, param)
|
||||
self.name = name
|
||||
|
|
@ -437,10 +435,11 @@ class LNParamStmt(ParamStmt):
|
|||
def __str__(self):
|
||||
return '<Level Name: %s>' % self.name
|
||||
|
||||
|
||||
class CoordStmt(Statement):
|
||||
""" Coordinate Data Block
|
||||
"""
|
||||
|
||||
|
||||
@classmethod
|
||||
def from_dict(cls, stmt_dict, settings):
|
||||
zeros = settings['zero_suppression']
|
||||
|
|
@ -451,7 +450,7 @@ class CoordStmt(Statement):
|
|||
i = stmt_dict.get('i')
|
||||
j = stmt_dict.get('j')
|
||||
op = stmt_dict.get('op')
|
||||
|
||||
|
||||
if x is not None:
|
||||
x = parse_gerber_value(stmt_dict.get('x'),
|
||||
format, zeros)
|
||||
|
|
@ -465,39 +464,38 @@ class CoordStmt(Statement):
|
|||
j = parse_gerber_value(stmt_dict.get('j'),
|
||||
format, zeros)
|
||||
return cls(function, x, y, i, j, op, settings)
|
||||
|
||||
|
||||
|
||||
def __init__(self, function, x, y, i, j, op, settings):
|
||||
""" Initialize CoordStmt class
|
||||
|
||||
|
||||
Parameters
|
||||
----------
|
||||
function : string
|
||||
function
|
||||
|
||||
|
||||
x : float
|
||||
X coordinate
|
||||
|
||||
|
||||
y : float
|
||||
Y coordinate
|
||||
|
||||
Y coordinate
|
||||
|
||||
i : float
|
||||
Coordinate offset in the X direction
|
||||
|
||||
|
||||
j : float
|
||||
Coordinate offset in the Y direction
|
||||
|
||||
|
||||
op : string
|
||||
Operation code
|
||||
|
||||
|
||||
settings : dict {'zero_suppression', 'format'}
|
||||
Gerber file coordinate format
|
||||
|
||||
Gerber file coordinate format
|
||||
|
||||
Returns
|
||||
-------
|
||||
Statement : CoordStmt
|
||||
Initialized CoordStmt class.
|
||||
|
||||
|
||||
"""
|
||||
Statement.__init__(self, "COORD")
|
||||
self.zero_suppression = settings['zero_suppression']
|
||||
|
|
@ -509,7 +507,6 @@ class CoordStmt(Statement):
|
|||
self.j = j
|
||||
self.op = op
|
||||
|
||||
|
||||
def to_gerber(self):
|
||||
ret = ''
|
||||
if self.function:
|
||||
|
|
@ -518,7 +515,7 @@ class CoordStmt(Statement):
|
|||
ret += 'X{0}'.format(write_gerber_value(self.x, self.zeros,
|
||||
self.format))
|
||||
if self.y:
|
||||
ret += 'Y{0}'.format(write_gerber_value(self.y,self. zeros,
|
||||
ret += 'Y{0}'.format(write_gerber_value(self.y, self. zeros,
|
||||
self.format))
|
||||
if self.i:
|
||||
ret += 'I{0}'.format(write_gerber_value(self.i, self.zeros,
|
||||
|
|
@ -552,7 +549,7 @@ class CoordStmt(Statement):
|
|||
else:
|
||||
op = self.op
|
||||
coord_str += 'Op: %s' % op
|
||||
|
||||
|
||||
return '<Coordinate Statement: %s>' % coord_str
|
||||
|
||||
|
||||
|
|
@ -562,20 +559,21 @@ class ApertureStmt(Statement):
|
|||
def __init__(self, d):
|
||||
Statement.__init__(self, "APERTURE")
|
||||
self.d = int(d)
|
||||
|
||||
|
||||
def to_gerber(self):
|
||||
return 'G54D{0}*'.format(self.d)
|
||||
|
||||
def __str__(self):
|
||||
return '<Aperture: %d>' % self.d
|
||||
|
||||
|
||||
class CommentStmt(Statement):
|
||||
""" Comment Statment
|
||||
"""
|
||||
def __init__(self, comment):
|
||||
Statement.__init__(self, "COMMENT")
|
||||
self.comment = comment
|
||||
|
||||
|
||||
def to_gerber(self):
|
||||
return 'G04{0}*'.format(self.comment)
|
||||
|
||||
|
|
@ -594,12 +592,11 @@ class EofStmt(Statement):
|
|||
|
||||
def __str__(self):
|
||||
return '<EOF Statement>'
|
||||
|
||||
|
||||
|
||||
|
||||
class UnknownStmt(Statement):
|
||||
""" Unknown Statement
|
||||
"""
|
||||
def __init__(self, line):
|
||||
Statement.__init__(self, "UNKNOWN")
|
||||
self.line = line
|
||||
|
||||
108
gerber/utils.py
108
gerber/utils.py
|
|
@ -10,28 +10,29 @@ files.
|
|||
"""
|
||||
|
||||
# Author: Hamilton Kibbe <ham@hamiltonkib.be>
|
||||
# License:
|
||||
# License:
|
||||
|
||||
|
||||
def parse_gerber_value(value, format=(2, 5), zero_suppression='trailing'):
|
||||
""" Convert gerber/excellon formatted string to floating-point number
|
||||
|
||||
|
||||
.. note::
|
||||
Format and zero suppression are configurable. Note that the Excellon
|
||||
and Gerber formats use opposite terminology with respect to leading
|
||||
and trailing zeros. The Gerber format specifies which zeros are
|
||||
suppressed, while the Excellon format specifies which zeros are
|
||||
included. This function uses the Gerber-file convention, so an
|
||||
Excellon file in LZ (leading zeros) mode would use
|
||||
`zero_suppression='trailing'`
|
||||
|
||||
|
||||
Format and zero suppression are configurable. Note that the Excellon
|
||||
and Gerber formats use opposite terminology with respect to leading
|
||||
and trailing zeros. The Gerber format specifies which zeros are
|
||||
suppressed, while the Excellon format specifies which zeros are
|
||||
included. This function uses the Gerber-file convention, so an
|
||||
Excellon file in LZ (leading zeros) mode would use
|
||||
`zero_suppression='trailing'`
|
||||
|
||||
|
||||
Parameters
|
||||
----------
|
||||
value : string
|
||||
A Gerber/Excellon-formatted string representing a numerical value.
|
||||
|
||||
format : tuple (int,int)
|
||||
Gerber/Excellon precision format expressed as a tuple containing:
|
||||
Gerber/Excellon precision format expressed as a tuple containing:
|
||||
(number of integer-part digits, number of decimal-part digits)
|
||||
|
||||
zero_suppression : string
|
||||
|
|
@ -41,12 +42,12 @@ def parse_gerber_value(value, format=(2, 5), zero_suppression='trailing'):
|
|||
-------
|
||||
value : float
|
||||
The specified value as a floating-point number.
|
||||
|
||||
|
||||
"""
|
||||
# Format precision
|
||||
integer_digits, decimal_digits = format
|
||||
MAX_DIGITS = integer_digits + decimal_digits
|
||||
|
||||
|
||||
# Absolute maximum number of digits supported. This will handle up to
|
||||
# 6:7 format, which is somewhat supported, even though the gerber spec
|
||||
# only allows up to 6:6
|
||||
|
|
@ -59,40 +60,39 @@ def parse_gerber_value(value, format=(2, 5), zero_suppression='trailing'):
|
|||
negative = '-' in value
|
||||
if negative:
|
||||
value = value.strip(' -')
|
||||
|
||||
|
||||
# Handle excellon edge case with explicit decimal. "That was easy!"
|
||||
if '.' in value:
|
||||
return float(value)
|
||||
|
||||
|
||||
digits = [digit for digit in '0' * MAX_DIGITS]
|
||||
offset = 0 if zero_suppression == 'trailing' else (MAX_DIGITS - len(value))
|
||||
for i, digit in enumerate(value):
|
||||
digits[i + offset] = digit
|
||||
|
||||
|
||||
|
||||
result = float(''.join(digits[:integer_digits] + ['.'] + digits[integer_digits:]))
|
||||
return -1.0 * result if negative else result
|
||||
|
||||
|
||||
|
||||
|
||||
def write_gerber_value(value, format=(2, 5), zero_suppression='trailing'):
|
||||
""" Convert a floating point number to a Gerber/Excellon-formatted string.
|
||||
|
||||
|
||||
.. note::
|
||||
Format and zero suppression are configurable. Note that the Excellon
|
||||
and Gerber formats use opposite terminology with respect to leading
|
||||
and trailing zeros. The Gerber format specifies which zeros are
|
||||
suppressed, while the Excellon format specifies which zeros are
|
||||
included. This function uses the Gerber-file convention, so an
|
||||
Excellon file in LZ (leading zeros) mode would use
|
||||
Format and zero suppression are configurable. Note that the Excellon
|
||||
and Gerber formats use opposite terminology with respect to leading
|
||||
and trailing zeros. The Gerber format specifies which zeros are
|
||||
suppressed, while the Excellon format specifies which zeros are
|
||||
included. This function uses the Gerber-file convention, so an
|
||||
Excellon file in LZ (leading zeros) mode would use
|
||||
`zero_suppression='trailing'`
|
||||
|
||||
|
||||
Parameters
|
||||
----------
|
||||
value : float
|
||||
A floating point value.
|
||||
|
||||
format : tuple (n=2)
|
||||
Gerber/Excellon precision format expressed as a tuple containing:
|
||||
Gerber/Excellon precision format expressed as a tuple containing:
|
||||
(number of integer-part digits, number of decimal-part digits)
|
||||
|
||||
zero_suppression : string
|
||||
|
|
@ -106,12 +106,12 @@ def write_gerber_value(value, format=(2, 5), zero_suppression='trailing'):
|
|||
# Format precision
|
||||
integer_digits, decimal_digits = format
|
||||
MAX_DIGITS = integer_digits + decimal_digits
|
||||
|
||||
|
||||
if MAX_DIGITS > 13 or integer_digits > 6 or decimal_digits > 7:
|
||||
raise ValueError('Parser only supports precision up to 6:7 format')
|
||||
|
||||
|
||||
# negative sign affects padding, so deal with it at the end...
|
||||
negative = value < 0.0
|
||||
negative = value < 0.0
|
||||
if negative:
|
||||
value = -1.0 * value
|
||||
|
||||
|
|
@ -119,48 +119,72 @@ def write_gerber_value(value, format=(2, 5), zero_suppression='trailing'):
|
|||
fmtstring = '%%0%d.0%df' % (MAX_DIGITS + 1, decimal_digits)
|
||||
|
||||
digits = [val for val in fmtstring % value if val != '.']
|
||||
|
||||
# Suppression...
|
||||
|
||||
# Suppression...
|
||||
if zero_suppression == 'trailing':
|
||||
while digits[-1] == '0':
|
||||
digits.pop()
|
||||
else:
|
||||
while digits[0] == '0':
|
||||
digits.pop(0)
|
||||
|
||||
|
||||
return ''.join(digits) if not negative else ''.join(['-'] + digits)
|
||||
|
||||
|
||||
|
||||
def decimal_string(value, precision=6):
|
||||
""" Convert float to string with limited precision
|
||||
|
||||
|
||||
Parameters
|
||||
----------
|
||||
value : float
|
||||
A floating point value.
|
||||
|
||||
precision :
|
||||
precision :
|
||||
Maximum number of decimal places to print
|
||||
|
||||
Returns
|
||||
-------
|
||||
value : string
|
||||
The specified value as a string.
|
||||
|
||||
|
||||
"""
|
||||
floatstr = '%0.20g' % value
|
||||
integer = None
|
||||
decimal = None
|
||||
if '.' in floatstr:
|
||||
integer, decimal = floatstr.split('.')
|
||||
integer, decimal = floatstr.split('.')
|
||||
elif ',' in floatstr:
|
||||
integer, decimal = floatstr.split(',')
|
||||
integer, decimal = floatstr.split(',')
|
||||
if len(decimal) > precision:
|
||||
decimal = decimal[:precision]
|
||||
if integer or decimal:
|
||||
return ''.join([integer, '.', decimal])
|
||||
else:
|
||||
return int(floatstr)
|
||||
|
||||
|
||||
|
||||
def detect_file_format(filename):
|
||||
""" Determine format of a file
|
||||
|
||||
Parameters
|
||||
----------
|
||||
filename : string
|
||||
Filename of the file to read.
|
||||
|
||||
Returns
|
||||
-------
|
||||
format : string
|
||||
File format. either 'excellon' or 'rs274x'
|
||||
"""
|
||||
|
||||
# Read the first 20 lines
|
||||
with open(filename, 'r') as f:
|
||||
lines = [next(f) for x in xrange(20)]
|
||||
|
||||
# Look for
|
||||
for line in lines:
|
||||
if 'M48' in line:
|
||||
return 'excellon'
|
||||
elif '%FS' in line:
|
||||
return'rs274x'
|
||||
return 'unknown'
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue