diff options
| -rw-r--r-- | gerbonara/graphic_objects.py | 34 |
1 files changed, 19 insertions, 15 deletions
diff --git a/gerbonara/graphic_objects.py b/gerbonara/graphic_objects.py index 0995646..3136b39 100644 --- a/gerbonara/graphic_objects.py +++ b/gerbonara/graphic_objects.py @@ -40,26 +40,29 @@ class Length: # This makes the automatically generated method signatures in the Sphinx docs look nice return 'float' -@dataclass class GraphicObject: """ Base class for the graphic objects that make up a :py:class:`.GerberFile` or :py:class:`.ExcellonFile`. """ - _ : KW_ONLY - #: bool representing the *color* of this feature: whether this is a *dark* or *clear* feature. Clear and dark are - #: meant in the sense that they are used in the Gerber spec and refer to whether the transparency film that this - #: file describes ends up black or clear at this spot. In a standard green PCB, a *polarity_dark=True* line will - #: show up as copper on the copper layer, white ink on the silkscreen layer, or an opening on the soldermask layer. - #: Clear features erase dark features, they are not transparent in the colloquial meaning. This property is ignored - #: for features of an :py:class:`.ExcellonFile`. - polarity_dark : bool = True + # hackety hack: Work around python < 3.10 not having dataclasses.KW_ONLY. Once we drop python 3.8 and 3.9, we can + # get rid of this, just set these as normal fields, and decorate GraphicObject with @dataclass. + def __init_subclass__(cls): + #: bool representing the *color* of this feature: whether this is a *dark* or *clear* feature. Clear and dark are + #: meant in the sense that they are used in the Gerber spec and refer to whether the transparency film that this + #: file describes ends up black or clear at this spot. In a standard green PCB, a *polarity_dark=True* line will + #: show up as copper on the copper layer, white ink on the silkscreen layer, or an opening on the soldermask layer. + #: Clear features erase dark features, they are not transparent in the colloquial meaning. This property is ignored + #: for features of an :py:class:`.ExcellonFile`. + cls.polarity_dark = True + + #: :py:class:`.LengthUnit` used for all coordinate fields of this object (such as ``x`` or ``y``). + cls.unit = None - #: :py:class:`.LengthUnit` used for all coordinate fields of this object (such as ``x`` or ``y``). - unit : str = None + #: `dict` containing GerberX2 attributes attached to this feature. Note that this does not include file attributes, + #: which are stored in the :py:class:`.GerberFile` object instead. + cls.attrs = field(default_factory=dict) + cls.__annotations__.update({'polarity_dark' : bool, 'unit' : str, 'attrs': dict}) - #: `dict` containing GerberX2 attributes attached to this feature. Note that this does not include file attributes, - #: which are stored in the :py:class:`.GerberFile` object instead. - attrs : dict = field(default_factory=dict) def converted(self, unit): """ Convert this gerber object to another :py:class:`.LengthUnit`. @@ -255,7 +258,8 @@ class Region(GraphicObject): """ def __init__(self, outline=None, arc_centers=None, *, unit, polarity_dark): - super().__init__(unit=unit, polarity_dark=polarity_dark) + self.unit = unit + self.polarity_dark = polarity_dark outline = [] if outline is None else outline arc_centers = [] if arc_centers is None else arc_centers self.poly = gp.ArcPoly(outline, arc_centers) |