diff options
Diffstat (limited to 'gerbonara/gerber')
| -rw-r--r-- | gerbonara/gerber/aperture_macros/parse.py | 19 | ||||
| -rw-r--r-- | gerbonara/gerber/apertures.py | 126 | ||||
| -rw-r--r-- | gerbonara/gerber/cam.py | 1 | ||||
| -rw-r--r-- | gerbonara/gerber/gerber_statements.py | 2 | ||||
| -rw-r--r-- | gerbonara/gerber/graphic_primitives.py | 1 | ||||
| -rw-r--r-- | gerbonara/gerber/rs274x.py | 7 | ||||
| -rw-r--r-- | gerbonara/gerber/tests/image_support.py | 1 | ||||
| -rw-r--r-- | gerbonara/gerber/tests/test_rs274x.py | 16 |
8 files changed, 110 insertions, 63 deletions
diff --git a/gerbonara/gerber/aperture_macros/parse.py b/gerbonara/gerber/aperture_macros/parse.py index 6eed381..86f2882 100644 --- a/gerbonara/gerber/aperture_macros/parse.py +++ b/gerbonara/gerber/aperture_macros/parse.py @@ -127,30 +127,29 @@ deg_per_rad = 180 / math.pi class GenericMacros: _generic_hole = lambda n: [ - ap.Circle(None, [0, var(n), 0, 0]), - ap.CenterLine(None, [0, var(n), var(n+1), 0, 0, var(n+2) * -deg_per_rad])] + ap.Circle('mm', [0, var(n), 0, 0]), + ap.CenterLine('mm', [0, var(n), var(n+1), 0, 0, var(n+2) * -deg_per_rad])] - # Initialize all these with "None" units so they inherit file units, and do not convert their arguments. # NOTE: All generic macros have rotation values specified in **clockwise radians** like the rest of the user-facing # API. circle = ApertureMacro('GNC', [ - ap.Circle(None, [1, var(1), 0, 0, var(4) * -deg_per_rad]), + ap.Circle('mm', [1, var(1), 0, 0, var(4) * -deg_per_rad]), *_generic_hole(2)]) rect = ApertureMacro('GNR', [ - ap.CenterLine(None, [1, var(1), var(2), 0, 0, var(5) * -deg_per_rad]), + ap.CenterLine('mm', [1, var(1), var(2), 0, 0, var(5) * -deg_per_rad]), *_generic_hole(3) ]) # w must be larger than h obround = ApertureMacro('GNO', [ - ap.CenterLine(None, [1, var(1), var(2), 0, 0, var(5) * -deg_per_rad]), - ap.Circle(None, [1, var(2), +var(1)/2, 0, var(5) * -deg_per_rad]), - ap.Circle(None, [1, var(2), -var(1)/2, 0, var(5) * -deg_per_rad]), + ap.CenterLine('mm', [1, var(1), var(2), 0, 0, var(5) * -deg_per_rad]), + ap.Circle('mm', [1, var(2), +var(1)/2, 0, var(5) * -deg_per_rad]), + ap.Circle('mm', [1, var(2), -var(1)/2, 0, var(5) * -deg_per_rad]), *_generic_hole(3) ]) polygon = ApertureMacro('GNP', [ - ap.Polygon(None, [1, var(2), 0, 0, var(1), var(3) * -deg_per_rad]), - ap.Circle(None, [0, var(4), 0, 0])]) + ap.Polygon('mm', [1, var(2), 0, 0, var(1), var(3) * -deg_per_rad]), + ap.Circle('mm', [0, var(4), 0, 0])]) if __name__ == '__main__': diff --git a/gerbonara/gerber/apertures.py b/gerbonara/gerber/apertures.py index 9e5c23a..2723c8d 100644 --- a/gerbonara/gerber/apertures.py +++ b/gerbonara/gerber/apertures.py @@ -1,6 +1,6 @@ import math -from dataclasses import dataclass, replace, astuple, InitVar +from dataclasses import dataclass, replace, fields, InitVar, KW_ONLY from .aperture_macros.parse import GenericMacros @@ -20,7 +20,17 @@ def strip_right(*args): return args +class Length: + def __init__(self, obj_type): + self.type = obj_type + +CONVERSION_FACTOR = {None: 1, 'mm': 25.4, 'inch': 1/25.4} + +@dataclass class Aperture: + _ : KW_ONLY + unit : str = None + @property def hole_shape(self): if self.hole_rect_h is not None: @@ -32,9 +42,26 @@ class Aperture: def hole_size(self): return (self.hole_dia, self.hole_rect_h) - @property - def params(self): - return astuple(self) + def convert(self, value, unit): + if self.unit == unit or self.unit is None or unit is None or value is None: + return value + elif unit == 'mm': + return value * 25.4 + else: + return value / 25.4 + + def params(self, unit=None): + out = [] + for f in fields(self): + if f.kw_only: + continue + + val = getattr(self, f.name) + if isinstance(f.type, Length): + val = self.convert(val, unit) + out.append(val) + + return out def flash(self, x, y): return self.primitives(x, y) @@ -43,16 +70,19 @@ class Aperture: def equivalent_width(self): raise ValueError('Non-circular aperture used in interpolation statement, line width is not properly defined.') - def to_gerber(self): + def to_gerber(self, settings=None): # Hack: The standard aperture shapes C, R, O do not have a rotation parameter. To make this API easier to use, # we emulate this parameter. Our circle, rectangle and oblong classes below have a rotation parameter. Only at # export time during to_gerber, this parameter is evaluated. + unit = settings.unit if settings else None + #print(f'aperture to gerber {self.unit=} {settings=} {unit=}') actual_inst = self._rotated() - params = 'X'.join(f'{float(par):.4}' for par in actual_inst.params if par is not None) + params = 'X'.join(f'{float(par):.4}' for par in actual_inst.params(unit) if par is not None) return f'{actual_inst.gerber_shape_code},{params}' def __eq__(self, other): - return hasattr(other, to_gerber) and self.to_gerber() == other.to_gerber() + # We need to choose some unit here. + return hasattr(other, to_gerber) and self.to_gerber('mm') == other.to_gerber('mm') def _rotate_hole_90(self): if self.hole_rect_h is None: @@ -65,9 +95,9 @@ class Aperture: class CircleAperture(Aperture): gerber_shape_code = 'C' human_readable_shape = 'circle' - diameter : float - hole_dia : float = None - hole_rect_h : float = None + diameter : Length(float) + hole_dia : Length(float) = None + hole_rect_h : Length(float) = None rotation : float = 0 # radians; for rectangular hole; see hack in Aperture.to_gerber def primitives(self, x, y, rotation): @@ -89,21 +119,23 @@ class CircleAperture(Aperture): return self.to_macro(self.rotation) def to_macro(self): - return ApertureMacroInstance(GenericMacros.circle, self.params) + return ApertureMacroInstance(GenericMacros.circle, self.params(unit='mm')) - @property - def params(self): - return strip_right(self.diameter, self.hole_dia, self.hole_rect_h) + def params(self, unit=None): + return strip_right( + self.convert(self.diameter, unit), + self.convert(self.hole_dia, unit), + self.convert(self.hole_rect_h, unit)) @dataclass class RectangleAperture(Aperture): gerber_shape_code = 'R' human_readable_shape = 'rect' - w : float - h : float - hole_dia : float = None - hole_rect_h : float = None + w : Length(float) + h : Length(float) + hole_dia : Length(float) = None + hole_rect_h : Length(float) = None rotation : float = 0 # radians def primitives(self, x, y): @@ -128,21 +160,28 @@ class RectangleAperture(Aperture): def to_macro(self): return ApertureMacroInstance(GenericMacros.rect, - [self.w, self.h, self.hole_dia or 0, self.hole_rect_h or 0, self.rotation]) + [self.convert(self.w, 'mm'), + self.convert(self.h, 'mm'), + self.convert(self.hole_dia, 'mm') or 0, + self.convert(self.hole_rect_h, 'mm') or 0, + self.rotation]) - @property - def params(self): - return strip_right(self.w, self.h, self.hole_dia, self.hole_rect_h) + def params(self, unit=None): + return strip_right( + self.convert(self.w, unit), + self.convert(self.h, unit), + self.convert(self.hole_dia, unit), + self.convert(self.hole_rect_h, unit)) @dataclass class ObroundAperture(Aperture): gerber_shape_code = 'O' human_readable_shape = 'obround' - w : float - h : float - hole_dia : float = None - hole_rect_h : float = None + w : Length(float) + h : Length(float) + hole_dia : Length(float) = None + hole_rect_h : Length(float) = None rotation : float = 0 def primitives(self, x, y): @@ -165,20 +204,27 @@ class ObroundAperture(Aperture): # generic macro only supports w > h so flip x/y if h > w inst = self if self.w > self.h else replace(self, w=self.h, h=self.w, **_rotate_hole_90(self), rotation=self.rotation-90) return ApertureMacroInstance(GenericMacros.obround, - [inst.w, ints.h, inst.hole_dia, inst.hole_rect_h, inst.rotation]) + [self.convert(inst.w, 'mm'), + self.convert(ints.h, 'mm'), + self.convert(inst.hole_dia, 'mm'), + self.convert(inst.hole_rect_h, 'mm'), + inst.rotation]) - @property - def params(self): - return strip_right(self.w, self.h, self.hole_dia, self.hole_rect_h) + def params(self, unit=None): + return strip_right( + self.convert(self.w, unit), + self.convert(self.h, unit), + self.convert(self.hole_dia, unit), + self.convert(self.hole_rect_h, unit)) @dataclass class PolygonAperture(Aperture): gerber_shape_code = 'P' - diameter : float + diameter : Length(float) n_vertices : int rotation : float = 0 - hole_dia : float = None + hole_dia : Length(float) = None def primitives(self, x, y): return [ gp.RegularPolygon(x, y, diameter, n_vertices, rotation=self.rotation) ] @@ -192,17 +238,16 @@ class PolygonAperture(Aperture): return self def to_macro(self): - return ApertureMacroInstance(GenericMacros.polygon, self.params) + return ApertureMacroInstance(GenericMacros.polygon, self.params('mm')) - @property - def params(self): + def params(self, unit=None): rotation = self.rotation % (2*math.pi / self.n_vertices) if self.rotation is not None else None if self.hole_dia is not None: - return self.diameter, self.n_vertices, rotation, self.hole_dia + return self.convert(self.diameter, unit), self.n_vertices, rotation, self.convert(self.hole_dia, unit) elif rotation is not None and not math.isclose(rotation, 0): - return self.diameter, self.n_vertices, rotation + return self.convert(self.diameter, unit), self.n_vertices, rotation else: - return self.diameter, self.n_vertices + return self.convert(self.diameter, unit), self.n_vertices @dataclass class ApertureMacroInstance(Aperture): @@ -235,8 +280,9 @@ class ApertureMacroInstance(Aperture): hasattr(other, 'params') and self.params == other.params and \ hasattr(other, 'rotation') and self.rotation == other.rotation - @property - def params(self): + def params(self, unit=None): + # We ignore "unit" here as we convert the actual macro, not this instantiation. + # We do this because here we do not have information about which parameter has which physical units. return tuple(self.parameters) diff --git a/gerbonara/gerber/cam.py b/gerbonara/gerber/cam.py index fa38382..7988b44 100644 --- a/gerbonara/gerber/cam.py +++ b/gerbonara/gerber/cam.py @@ -92,6 +92,7 @@ class FileSettings: # negative sign affects padding, so deal with it at the end... sign = '-' if value < 0 else '' + # FIXME never use exponential notation here num = format(abs(value), f'0{integer_digits+decimal_digits+1}.{decimal_digits}f').replace('.', '') # Suppression... diff --git a/gerbonara/gerber/gerber_statements.py b/gerbonara/gerber/gerber_statements.py index 9d318a3..b47dfe3 100644 --- a/gerbonara/gerber/gerber_statements.py +++ b/gerbonara/gerber/gerber_statements.py @@ -83,7 +83,7 @@ class ApertureDefStmt(ParamStmt): self.aperture = aperture def to_gerber(self, settings=None): - return f'%ADD{self.number}{self.aperture.to_gerber()}*%' + return f'%ADD{self.number}{self.aperture.to_gerber(settings)}*%' def __str__(self): return f'<AD aperture def for {str(self.aperture).strip("<>")}>' diff --git a/gerbonara/gerber/graphic_primitives.py b/gerbonara/gerber/graphic_primitives.py index de1a0bc..966cac1 100644 --- a/gerbonara/gerber/graphic_primitives.py +++ b/gerbonara/gerber/graphic_primitives.py @@ -10,6 +10,7 @@ from .gerber_statements import * class GraphicPrimitive: _ : KW_ONLY polarity_dark : bool = True + unit : str = None def rotate_point(x, y, angle, cx=0, cy=0): diff --git a/gerbonara/gerber/rs274x.py b/gerbonara/gerber/rs274x.py index b5fbfac..eea1cf7 100644 --- a/gerbonara/gerber/rs274x.py +++ b/gerbonara/gerber/rs274x.py @@ -165,9 +165,6 @@ class GerberFile(CamFile): yield EofStmt() - def to_gerber(self): - return '\n'.join(self.generate_statements()) - def __str__(self): return f'<GerberFile with {len(self.apertures)} apertures, {len(self.objects)} objects>' @@ -599,10 +596,10 @@ class GerberParser: } if (kls := aperture_classes.get(match['shape'])): - new_aperture = kls(*modifiers) + new_aperture = kls(*modifiers, unit=self.file_settings.unit) elif (macro := self.aperture_macros.get(match['shape'])): - new_aperture = apertures.ApertureMacroInstance(macro, modifiers) + new_aperture = apertures.ApertureMacroInstance(macro, modifiers, unit=self.file_settings.unit) else: raise ValueError(f'Aperture shape "{match["shape"]}" is unknown') diff --git a/gerbonara/gerber/tests/image_support.py b/gerbonara/gerber/tests/image_support.py index 96bc357..23b829d 100644 --- a/gerbonara/gerber/tests/image_support.py +++ b/gerbonara/gerber/tests/image_support.py @@ -129,6 +129,7 @@ def image_difference(reference, actual, diff_out=None): out = np.array(Image.open(actual)).astype(float) ref, out = ref.mean(axis=2), out.mean(axis=2) # convert to grayscale + # FIXME blur images here before comparison to mitigate aliasing issue delta = np.abs(out - ref).astype(float) / 255 if diff_out: Image.fromarray((delta*255).astype(np.uint8), mode='L').save(diff_out) diff --git a/gerbonara/gerber/tests/test_rs274x.py b/gerbonara/gerber/tests/test_rs274x.py index aec2174..0b061b1 100644 --- a/gerbonara/gerber/tests/test_rs274x.py +++ b/gerbonara/gerber/tests/test_rs274x.py @@ -118,9 +118,10 @@ def test_round_trip(temp_files, reference): GerberFile.open(ref).save(tmp_gbr) - mean, max = gerber_difference(ref, tmp_gbr, diff_out=tmp_png) - assert mean < 1e-6 - assert max < 0.1 + mean, _max, hist = gerber_difference(ref, tmp_gbr, diff_out=tmp_png) + assert mean < 5e-5 + assert hist[9] == 0 + assert hist[3:].sum() < 5e-5*hist.size TEST_ANGLES = [90, 180, 270, 30, 1.5, 10, 360, 1024, -30, -90] TEST_OFFSETS = [(0, 0), (100, 0), (0, 100), (2, 0), (10, 100)] @@ -165,11 +166,12 @@ def test_rotation_center(temp_files, reference, angle, center): # calculate circle center in SVG coordinates size = (10, 10) # inches cx, cy = to_gerbv_svg_units(center[0]), to_gerbv_svg_units(10, 'inch')-to_gerbv_svg_units(center[1], 'mm') - mean, _max = gerber_difference(ref, tmp_gbr, diff_out=tmp_png, + mean, _max, hist = gerber_difference(ref, tmp_gbr, diff_out=tmp_png, svg_transform=f'rotate({angle} {cx} {cy})', size=size) assert mean < 1e-3 - assert hist[9] == 0 + assert hist[9] < 50 + assert hist[3:].sum() < 1e-3*hist.size @pytest.mark.filterwarnings('ignore:Deprecated.*statement found.*:DeprecationWarning') @pytest.mark.filterwarnings('ignore::SyntaxWarning') @@ -205,13 +207,13 @@ def test_combined(temp_files, reference, angle, center, offset): f = GerberFile.open(ref) f.rotate(deg_to_rad(angle), center=center) f.offset(*offset) - f.save(tmp_gbr) + f.save(tmp_gbr, settings=FileSettings(unit=f.unit, number_format=(4,7))) size = (10, 10) # inches cx, cy = to_gerbv_svg_units(center[0]), to_gerbv_svg_units(10, 'inch')-to_gerbv_svg_units(center[1], 'mm') dx, dy = to_gerbv_svg_units(offset[0]), -to_gerbv_svg_units(offset[1]) mean, _max, hist = gerber_difference(ref, tmp_gbr, diff_out=tmp_png, - svg_transform=f'rotate({angle} {cx} {cy}) translate({dx} {dy})', + svg_transform=f'translate({dx} {dy}) rotate({angle} {cx} {cy})', size=size) assert mean < 1e-3 assert hist[9] < 100 |