Cleanup, rendering fixes.

fixed rendering of tented vias
fixed rendering of semi-transparent layers
fixed file type detection issues
added some examples

1 files changed, 15 insertions, 8 deletions

diff --git a/gerber/pcb.py b/gerber/pcb.py
index 92a1f28..a213fb3 100644
--- a/gerber/pcb.py
+++ b/gerber/pcb.py
@@ -18,7 +18,7 @@
 
 import os
 from .exceptions import ParseError
-from .layers import PCBLayer, LayerSet, sort_layers
+from .layers import PCBLayer, sort_layers
 from .common import read as gerber_read
 from .utils import listdir
 
@@ -29,22 +29,26 @@ class PCB(object):
     def from_directory(cls, directory, board_name=None, verbose=False):
         layers = []
         names = set()
+
         # Validate
         directory = os.path.abspath(directory)
         if not os.path.isdir(directory):
             raise TypeError('{} is not a directory.'.format(directory))
+
         # Load gerber files
         for filename in listdir(directory, True, True):
             try:
                 camfile = gerber_read(os.path.join(directory, filename))
-                layer = PCBLayer.from_gerber(camfile)
+                layer = PCBLayer.from_cam(camfile)
                 layers.append(layer)
                 names.add(os.path.splitext(filename)[0])
                 if verbose:
-                    print('Added {} layer <{}>'.format(layer.layer_class, filename))
+                    print('[PCB]: Added {} layer <{}>'.format(layer.layer_class,
+                                                              filename))
             except ParseError:
                 if verbose:
-                    print('Skipping file {}'.format(filename))
+                    print('[PCB]: Skipping file {}'.format(filename))
+
         # Try to guess board name
         if board_name is None:
             if len(names) == 1:
@@ -66,14 +70,16 @@ class PCB(object):
         board_layers = [l for l in reversed(self.layers) if l.layer_class in
                         ('topsilk', 'topmask', 'top')]
         drill_layers = [l for l in self.drill_layers if 'top' in l.layers]
-        return board_layers + drill_layers
+        # Drill layer goes under soldermask for proper rendering of tented vias
+        return [board_layers[0]] + drill_layers + board_layers[1:]
 
     @property
     def bottom_layers(self):
         board_layers = [l for l in self.layers if l.layer_class in
                         ('bottomsilk', 'bottommask', 'bottom')]
         drill_layers = [l for l in self.drill_layers if 'bottom' in l.layers]
-        return board_layers + drill_layers
+        # Drill layer goes under soldermask for proper rendering of tented vias
+        return [board_layers[0]] + drill_layers + board_layers[1:]
 
     @property
     def drill_layers(self):
@@ -81,8 +87,9 @@ class PCB(object):
 
     @property
     def copper_layers(self):
-        return [layer for layer in self.layers if layer.layer_class in
-                ('top', 'bottom', 'internal')]
+        return list(reversed([layer for layer in self.layers if
+                              layer.layer_class in
+                              ('top', 'bottom', 'internal')]))
 
     @property
     def layer_count(self):