From c29802c2b941150b92720124aa2512da70aeff3b Mon Sep 17 00:00:00 2001
From: jaseg <git@jaseg.de>
Date: Wed, 14 Jun 2023 17:29:43 +0200
Subject: Add missing file for initial PCB support

---
 gerbonara/cad/kicad/pcb.py | 348 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 348 insertions(+)
 create mode 100644 gerbonara/cad/kicad/pcb.py

diff --git a/gerbonara/cad/kicad/pcb.py b/gerbonara/cad/kicad/pcb.py
new file mode 100644
index 0000000..bb608bb
--- /dev/null
+++ b/gerbonara/cad/kicad/pcb.py
@@ -0,0 +1,348 @@
+"""
+Library for handling KiCad's PCB files (`*.kicad_mod`).
+"""
+
+from pathlib import Path
+from dataclasses import field
+from itertools import chain
+import fnmatch
+
+from .sexp import *
+from .base_types import *
+from .primitives import *
+from .footprints import Footprint
+from . import graphical_primitives as gr
+
+from ..primitives import Positioned
+
+from ... import graphic_primitives as gp
+from ... import graphic_objects as go
+from ... import apertures as ap
+from ...layers import LayerStack
+from ...newstroke import Newstroke
+from ...utils import MM
+
+
+@sexp_type('general')
+class GeneralSection:
+    thickness: Named(float) = 1.60
+
+
+@sexp_type('paper')
+class PageSettings:
+    page_format: str = 'A4'
+    width: float = None
+    height: float = None
+    portrait: bool = False
+
+
+@sexp_type('layers')
+class LayerSettings:
+    index: int = None
+    canonical_name: str = None
+    layer_type: AtomChoice(Atom.jumper, Atom.mixed, Atom.power, Atom.signal, Atom.user) = Atom.signal
+    custom_name: str = None
+
+
+@sexp_type('layer')
+class LayerStackupSettings:
+    dielectric: bool = False
+    name: str = None
+    index: int = None
+    layer_type: Named(str, name='type') = ''
+    color: Color = None
+    thickness: Named(float) = None
+    material: Named(str) = None
+    epsilon_r: Named(float) = None
+    loss_tangent: Named(float) = None
+
+
+@sexp_type('stackup')
+class StackupSettings:
+    layers: List(LayerStackupSettings) = field(default_factory=list)
+    copper_finish: Named(str) = None
+    dielectric_constraints: Named(YesNoAtom()) = None
+    edge_connector: Named(AtomChoice(Atom.yes, Atom.bevelled)) = None
+    castellated_pads: Named(bool) = None
+    edge_plating: Named(bool) = None
+
+
+TFBool = YesNoAtom(yes=Atom.true, no=Atom.false)
+
+@sexp_type('pcbplotparams')
+class ExportSettings:
+    layerselection: Named(Atom) = 0
+    plot_on_all_layers_selection: Named(Atom) = 0
+    disableapertmacros: Named(TFBool) = False
+    usegerberextensions: Named(TFBool) = True
+    usegerberattributes: Named(TFBool) = True
+    usegerberadvancedattributes: Named(TFBool) = True
+    creategerberjobfile: Named(TFBool) = True
+    dashed_line_dash_ratio: Named(float) = 12.0
+    dashed_line_gap_ratio: Named(float) = 3.0
+    svguseinch: Named(TFBool) = False
+    svgprecision: Named(float) = 4
+    excludeedgelayer: Named(TFBool) = False
+    plotframeref: Named(TFBool) = False
+    viasonmask: Named(TFBool) = False
+    mode: Named(int) = 1
+    useauxorigin: Named(TFBool) = False
+    hpglpennumber: Named(int) = 1
+    hpglpenspeed: Named(int) = 20
+    hpglpendiameter: Named(float) = 15.0
+    pdf_front_fp_property_popups: Named(TFBool) = True
+    pdf_back_fp_property_popups: Named(TFBool) = True
+    dxfpolygonmode: Named(TFBool) = True
+    dxfimperialunits: Named(TFBool) = False
+    dxfusepcbnewfont: Named(TFBool) = True
+    psnegative: Named(TFBool) = False
+    psa4output: Named(TFBool) = False
+    plotreference: Named(TFBool) = True
+    plotvalue: Named(TFBool) = True
+    plotinvisibletext: Named(TFBool) = False
+    sketchpadsonfab: Named(TFBool) = False
+    subtractmaskfromsilk: Named(TFBool) = False
+    outputformat: Named(int) = 1
+    mirror: Named(TFBool) = False
+    drillshape: Named(int) = 0
+    scaleselection: Named(int) = 1
+    outputdirectory: Named(str) = "gerber"
+
+
+@sexp_type('setup')
+class BoardSetup:
+    stackup: OmitDefault(StackupSettings) = field(default_factory=StackupSettings)
+    pad_to_mask_clearance: Named(float) = None
+    solder_mask_min_width: Named(float) = None
+    pad_to_past_clearance: Named(float) = None
+    pad_to_paste_clearance_ratio: Named(float) = None
+    aux_axis_origin: Rename(XYCoord) = None
+    grid_origin: Rename(XYCoord) = None
+    export_settings: ExportSettings = field(default_factory=ExportSettings)
+
+
+@sexp_type('net')
+class Net:
+    index: int = 0
+    name: str = ''
+
+
+@sexp_type('image')
+class Image:
+    at: AtPos = field(default_factory=AtPos)
+    scale: Named(float) = None
+    layer: Named(str) = None
+    uuid: UUID = field(default_factory=UUID)
+    data: str = ''
+
+
+@sexp_type('segment')
+class TrackSegment:
+    start: Rename(XYCoord) = field(default_factory=XYCoord)
+    end: Rename(XYCoord) = field(default_factory=XYCoord)
+    width: Named(float) = 0.5
+    layer: Named(str) = 'F.Cu'
+    locked: bool = False
+    net: Named(int) = 0
+    tstamp: Timestamp = field(default_factory=Timestamp)
+
+    def render(self, variables=None, cache=None):
+        if not self.width:
+            return
+
+        aperture = ap.CircleAperture(self.width, unit=MM)
+        yield go.Line(self.start.x, self.start.y, self.end.x, self.end.y, aperture=aperture, unit=MM)
+
+
+@sexp_type('arc')
+class TrackArc:
+    start: Rename(XYCoord) = field(default_factory=XYCoord)
+    mid: Rename(XYCoord) = field(default_factory=XYCoord)
+    end: Rename(XYCoord) = field(default_factory=XYCoord)
+    width: Named(float) = 0.5
+    layer: Named(str) = 'F.Cu'
+    locked: bool = False
+    net: Named(int) = 0
+    tstamp: Timestamp = field(default_factory=Timestamp)
+
+    def render(self, variables=None, cache=None):
+        if not self.width:
+            return
+
+        aperture = ap.CircleAperture(self.width, unit=MM)
+        cx, cy = self.mid.x, self.mid.y
+        x1, y1 = self.start.x, self.start.y
+        x2, y2 = self.end.x, self.end.y
+        yield go.Arc(x1, y1, x2, y2, cx-x1, cy-y1, aperture=aperture, clockwise=True, unit=MM)
+
+
+@sexp_type('via')
+class Via:
+    via_type: AtomChoice(Atom.blind, Atom.micro) = None
+    locked: bool = False
+    at: AtPos = field(default_factory=AtPos)
+    size: Named(float) = 0.8
+    drill: Named(float) = 0.4
+    layers: Named(Array(str)) = field(default_factory=list)
+    remove_unused_layers: bool = False
+    keep_end_layers: bool = False
+    free: Wrap(Flag()) = False
+    net: Named(int) = 0
+    tstamp: Timestamp = field(default_factory=Timestamp)
+
+    def render_drill(self):
+        aperture = ap.ExcellonTool(self.drill, plated=True, unit=MM)
+        yield go.Flash(self.at.x, self.at.y, aperture=aperture, unit=MM) 
+
+    def render(self, variables=None, cache=None):
+        aperture = ap.CircleAperture(self.size, unit=MM)
+        yield go.Flash(self.at.x, self.at.y, aperture, unit=MM)
+
+
+SUPPORTED_FILE_FORMAT_VERSIONS = [20210108, 20211014, 20221018, 20230517]
+@sexp_type('kicad_pcb')
+class Board:
+    _version: Named(int, name='version') = 20210108
+    generator: Named(Atom) = Atom.gerbonara
+    general: GeneralSection = field(default_factory=GeneralSection)
+    page: PageSettings = field(default_factory=PageSettings)
+    layers: Named(Array(LayerSettings)) = field(default_factory=list)
+    setup: BoardSetup = field(default_factory=BoardSetup)
+    properties: List(Property) = field(default_factory=list)
+    nets: List(Net) = field(default_factory=list)
+    footprints: List(Footprint) = field(default_factory=list)
+    # Graphical elements
+    texts: List(gr.Text) = field(default_factory=list)
+    text_boxes: List(gr.TextBox) = field(default_factory=list)
+    lines: List(gr.Line) = field(default_factory=list)
+    rectangles: List(gr.Rectangle) = field(default_factory=list)
+    circles: List(gr.Circle) = field(default_factory=list)
+    arcs: List(gr.Arc) = field(default_factory=list)
+    polygons: List(gr.Polygon) = field(default_factory=list)
+    curves: List(gr.Curve) = field(default_factory=list)
+    dimensions: List(gr.Dimension) = field(default_factory=list)
+    images: List(Image) = field(default_factory=list)
+    # Tracks
+    track_segments: List(TrackSegment) = field(default_factory=list)
+    vias: List(Via) = field(default_factory=list)
+    track_arcs: List(TrackArc) = field(default_factory=list)
+    # Other stuff
+    zones: List(Zone) = field(default_factory=list)
+    groups: List(Group) = field(default_factory=list)
+
+    _ : SEXP_END = None
+    original_filename: str = None
+    _bounding_box: tuple = None
+
+    @property
+    def version(self):
+        return self._version
+
+    @version.setter
+    def version(self, value):
+        if value not in SUPPORTED_FILE_FORMAT_VERSIONS:
+            raise FormatError(f'File format version {value} is not supported. Supported versions are {", ".join(map(str, SUPPORTED_FILE_FORMAT_VERSIONS))}.')
+
+    def write(self, filename=None):
+        with open(filename or self.original_filename, 'w') as f:
+            f.write(build_sexp(sexp(self)))
+
+    @classmethod
+    def open(kls, pcb_file, *args, **kwargs):
+        return kls.load(Path(pcb_file).read_text(), *args, **kwargs, original_filename=pcb_file)
+
+    @classmethod
+    def load(kls, data, *args, **kwargs):
+        return kls.parse(data, *args, **kwargs)
+
+    @property
+    def single_sided(self):
+        raise NotImplementedError()
+
+# FIXME vvv
+    def graphic_objects(self, text=False, images=False):
+        return chain(
+                (self.texts if text else []),
+                (self.text_boxes if text else []),
+                self.lines,
+                self.rectangles,
+                self.circles,
+                self.arcs,
+                self.polygons,
+                self.curves,
+                (self.dimensions if text else []),
+                (self.images if images else []))
+
+
+    def tracks(self, vias=True):
+        return chain(self.track_segments, self.track_arcs, (self.vias if vias else []))
+
+
+    def objects(self, vias=True, text=False, images=False):
+        return chain(self.graphic_objects(text=text, images=images), self.tracks(vias=vias))
+
+
+    def render(self, layer_stack, layer_map, x=0, y=0, rotation=0, text=False, flip=False, variables={}, cache=None):
+        for obj in self.objects(images=False, vias=False, text=text):
+            if not (layer := layer_map.get(obj.layer)):
+                continue
+
+            for fe in obj.render(variables=variables):
+                fe.rotate(rotation)
+                fe.offset(x, y, MM)
+                layer_stack[layer].objects.append(fe)
+
+        for obj in self.vias:
+            for glob in obj.layers or []:
+                for layer in fnmatch.filter(layer_map, glob):
+                    for fe in obj.render(cache=cache):
+                        fe.rotate(rotation)
+                        fe.offset(x, y, MM)
+                        fe.aperture = fe.aperture.rotated(rotation)
+                        layer_stack[layer_map[layer]].objects.append(fe)
+
+            for fe in obj.render_drill():
+                fe.rotate(rotation)
+                fe.offset(x, y, MM)
+                layer_stack.drill_pth.append(fe)
+
+    def bounding_box(self, unit=MM):
+        if not self._bounding_box:
+            stack = LayerStack()
+            layer_map = {kc_id: gn_id for kc_id, gn_id in LAYER_MAP_K2G.items() if gn_id in stack}
+            self.render(stack, layer_map, x=0, y=0, rotation=0, flip=False, text=False, variables={})
+            self._bounding_box = stack.bounding_box(unit)
+        return self._bounding_box
+
+ 
+@dataclass
+class BoardInstance(Positioned):
+    sexp: Board = None
+    variables: dict = field(default_factory=lambda: {})
+
+    def render(self, layer_stack, cache=None):
+        x, y, rotation, flip = self.abs_pos
+        x, y = MM(x, self.unit), MM(y, self.unit)
+
+        variables = dict(self.variables)
+
+        layer_map = {kc_id: gn_id for kc_id, gn_id in LAYER_MAP_K2G.items() if gn_id in layer_stack}
+
+        self.sexp.render(layer_stack, layer_map,
+                         x=x, y=y, rotation=rotation,
+                         flip=flip,
+                         variables=variables, cache=cache)
+    
+    def bounding_box(self, unit=MM):
+        return offset_bounds(self.sexp.bounding_box(unit), unit(self.x, self.unit), unit(self.y, self.unit))
+
+
+if __name__ == '__main__':
+    import sys
+    from ...layers import LayerStack
+    fp = Board.open(sys.argv[1])
+    stack = LayerStack()
+    BoardInstance(0, 0, fp, unit=MM).render(stack)
+    print(stack.to_pretty_svg())
+    stack.save_to_directory('/tmp/testdir')
+
-- 
cgit