diff options
Diffstat (limited to 'gerber/layers.py')
| -rw-r--r-- | gerber/layers.py | 295 |
1 files changed, 295 insertions, 0 deletions
diff --git a/gerber/layers.py b/gerber/layers.py new file mode 100644 index 0000000..69e1c0d --- /dev/null +++ b/gerber/layers.py @@ -0,0 +1,295 @@ +#! /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 os
+import re
+from collections import namedtuple
+
+from . import common
+from .excellon import ExcellonFile
+from .ipc356 import IPCNetlist
+
+
+Hint = namedtuple('Hint', 'layer ext name regex content')
+
+hints = [
+ Hint(layer='top',
+ ext=['gtl', 'cmp', 'top', ],
+ name=['art01', 'top', 'GTL', 'layer1', 'soldcom', 'comp', 'F.Cu', ],
+ regex='',
+ content=[]
+ ),
+ Hint(layer='bottom',
+ ext=['gbl', 'sld', 'bot', 'sol', 'bottom', ],
+ name=['art02', 'bottom', 'bot', 'GBL', 'layer2', 'soldsold', 'B.Cu', ],
+ regex='',
+ content=[]
+ ),
+ Hint(layer='internal',
+ ext=['in', 'gt1', 'gt2', 'gt3', 'gt4', 'gt5', 'gt6',
+ 'g1', 'g2', 'g3', 'g4', 'g5', 'g6', ],
+ name=['art', 'internal', 'pgp', 'pwr', 'gnd', 'ground',
+ 'gp1', 'gp2', 'gp3', 'gp4', 'gt5', 'gp6',
+ 'In1.Cu', 'In2.Cu', 'In3.Cu', 'In4.Cu',
+ 'group3', 'group4', 'group5', 'group6', 'group7', 'group8', ],
+ regex='',
+ content=[]
+ ),
+ Hint(layer='topsilk',
+ ext=['gto', 'sst', 'plc', 'ts', 'skt', 'topsilk', ],
+ name=['sst01', 'topsilk', 'silk', 'slk', 'sst', 'F.SilkS'],
+ regex='',
+ content=[]
+ ),
+ Hint(layer='bottomsilk',
+ ext=['gbo', 'ssb', 'pls', 'bs', 'skb', 'bottomsilk', ],
+ name=['bsilk', 'ssb', 'botsilk', 'bottomsilk', 'B.SilkS'],
+ regex='',
+ content=[]
+ ),
+ Hint(layer='topmask',
+ ext=['gts', 'stc', 'tmk', 'smt', 'tr', 'topmask', ],
+ name=['sm01', 'cmask', 'tmask', 'mask1', 'maskcom', 'topmask',
+ 'mst', 'F.Mask', ],
+ regex='',
+ content=[]
+ ),
+ Hint(layer='bottommask',
+ ext=['gbs', 'sts', 'bmk', 'smb', 'br', 'bottommask', ],
+ name=['sm', 'bmask', 'mask2', 'masksold', 'botmask', 'bottommask',
+ 'msb', 'B.Mask', ],
+ regex='',
+ content=[]
+ ),
+ Hint(layer='toppaste',
+ ext=['gtp', 'tm', 'toppaste', ],
+ name=['sp01', 'toppaste', 'pst', 'F.Paste'],
+ regex='',
+ content=[]
+ ),
+ Hint(layer='bottompaste',
+ ext=['gbp', 'bm', 'bottompaste', ],
+ name=['sp02', 'botpaste', 'bottompaste', 'psb', 'B.Paste', ],
+ regex='',
+ content=[]
+ ),
+ Hint(layer='outline',
+ ext=['gko', 'outline', ],
+ name=['BDR', 'border', 'out', 'outline', 'Edge.Cuts', ],
+ regex='',
+ content=[]
+ ),
+ Hint(layer='ipc_netlist',
+ ext=['ipc'],
+ name=[],
+ regex='',
+ content=[]
+ ),
+ Hint(layer='drawing',
+ ext=['fab'],
+ name=['assembly drawing', 'assembly', 'fabrication',
+ 'fab drawing', 'fab'],
+ regex='',
+ content=[]
+ ),
+]
+
+
+def layer_signatures(layer_class):
+ for hint in hints:
+ if hint.layer == layer_class:
+ return hint.ext + hint.name
+ return []
+
+
+def load_layer(filename):
+ return PCBLayer.from_cam(common.read(filename))
+
+
+def load_layer_data(data, filename=None):
+ return PCBLayer.from_cam(common.loads(data, filename))
+
+
+def guess_layer_class(filename):
+ try:
+ layer = guess_layer_class_by_content(filename)
+ if layer:
+ return layer
+ except:
+ pass
+
+ try:
+ directory, filename = os.path.split(filename)
+ name, ext = os.path.splitext(filename.lower())
+ for hint in hints:
+ if hint.regex:
+ if re.findall(hint.regex, filename, re.IGNORECASE):
+ return hint.layer
+
+ patterns = [r'^(\w*[.-])*{}([.-]\w*)?$'.format(x) for x in hint.name]
+ if ext[1:] in hint.ext or any(re.findall(p, name, re.IGNORECASE) for p in patterns):
+ return hint.layer
+ except:
+ pass
+ return 'unknown'
+
+
+def guess_layer_class_by_content(filename):
+ try:
+ file = open(filename, 'r')
+ for line in file:
+ for hint in hints:
+ if len(hint.content) > 0:
+ patterns = [r'^(.*){}(.*)$'.format(x) for x in hint.content]
+ if any(re.findall(p, line, re.IGNORECASE) for p in patterns):
+ return hint.layer
+ except:
+ pass
+
+ return False
+
+
+def sort_layers(layers, from_top=True):
+ layer_order = ['outline', 'toppaste', 'topsilk', 'topmask', 'top',
+ 'internal', 'bottom', 'bottommask', 'bottomsilk',
+ 'bottompaste']
+ append_after = ['drill', 'drawing']
+
+ output = []
+ drill_layers = [layer for layer in layers if layer.layer_class == 'drill']
+ internal_layers = list(sorted([layer for layer in layers
+ if layer.layer_class == 'internal']))
+
+ for layer_class in layer_order:
+ if layer_class == 'internal':
+ output += internal_layers
+ elif layer_class == 'drill':
+ output += drill_layers
+ else:
+ for layer in layers:
+ if layer.layer_class == layer_class:
+ output.append(layer)
+ if not from_top:
+ output = list(reversed(output))
+
+ for layer_class in append_after:
+ for layer in layers:
+ if layer.layer_class == layer_class:
+ output.append(layer)
+ return output
+
+
+class PCBLayer(object):
+ """ Base class for PCB Layers
+
+ Parameters
+ ----------
+ source : CAMFile
+ CAMFile representing the layer
+
+
+ Attributes
+ ----------
+ filename : string
+ Source Filename
+
+ """
+ @classmethod
+ def from_cam(cls, camfile):
+ filename = camfile.filename
+ layer_class = guess_layer_class(filename)
+ if isinstance(camfile, ExcellonFile) or (layer_class == 'drill'):
+ return DrillLayer.from_cam(camfile)
+ elif layer_class == 'internal':
+ return InternalLayer.from_cam(camfile)
+ if isinstance(camfile, IPCNetlist):
+ layer_class = 'ipc_netlist'
+ return cls(filename, layer_class, camfile)
+
+ def __init__(self, filename=None, layer_class=None, cam_source=None, **kwargs):
+ super(PCBLayer, self).__init__(**kwargs)
+ self.filename = filename
+ self.layer_class = layer_class
+ self.cam_source = cam_source
+ self.surface = None
+ self.primitives = cam_source.primitives if cam_source is not None else []
+
+ @property
+ def bounds(self):
+ if self.cam_source is not None:
+ return self.cam_source.bounds
+ else:
+ return None
+
+ def __repr__(self):
+ return '<PCBLayer: {}>'.format(self.layer_class)
+
+
+class DrillLayer(PCBLayer):
+ @classmethod
+ def from_cam(cls, camfile):
+ return cls(camfile.filename, camfile)
+
+ def __init__(self, filename=None, cam_source=None, layers=None, **kwargs):
+ super(DrillLayer, self).__init__(filename, 'drill', cam_source, **kwargs)
+ self.layers = layers if layers is not None else ['top', 'bottom']
+
+
+class InternalLayer(PCBLayer):
+
+ @classmethod
+ def from_cam(cls, camfile):
+ filename = camfile.filename
+ try:
+ order = int(re.search(r'\d+', filename).group())
+ except AttributeError:
+ order = 0
+ return cls(filename, camfile, order)
+
+ def __init__(self, filename=None, cam_source=None, order=0, **kwargs):
+ super(InternalLayer, self).__init__(filename, 'internal', cam_source, **kwargs)
+ self.order = order
+
+ def __eq__(self, other):
+ if not hasattr(other, 'order'):
+ raise TypeError()
+ return (self.order == other.order)
+
+ def __ne__(self, other):
+ if not hasattr(other, 'order'):
+ raise TypeError()
+ return (self.order != other.order)
+
+ def __gt__(self, other):
+ if not hasattr(other, 'order'):
+ raise TypeError()
+ return (self.order > other.order)
+
+ def __lt__(self, other):
+ if not hasattr(other, 'order'):
+ raise TypeError()
+ return (self.order < other.order)
+
+ def __ge__(self, other):
+ if not hasattr(other, 'order'):
+ raise TypeError()
+ return (self.order >= other.order)
+
+ def __le__(self, other):
+ if not hasattr(other, 'order'):
+ raise TypeError()
+ return (self.order <= other.order)
|