From 5885b60f14c35a65b67071a439a53aaacf39b594 Mon Sep 17 00:00:00 2001 From: jaseg Date: Wed, 5 Jan 2022 12:43:34 +0100 Subject: Add a bunch of 2d to_poly / bounding_box functions (untested) --- gerbonara/gerber/graphic_objects.py | 148 +++++++++++++++++++++++------------- 1 file changed, 97 insertions(+), 51 deletions(-) (limited to 'gerbonara/gerber/graphic_objects.py') diff --git a/gerbonara/gerber/graphic_objects.py b/gerbonara/gerber/graphic_objects.py index 5c523d5..d9736cf 100644 --- a/gerbonara/gerber/graphic_objects.py +++ b/gerbonara/gerber/graphic_objects.py @@ -5,29 +5,69 @@ from dataclasses import dataclass, KW_ONLY, astuple, replace from . import graphic_primitives as gp from .gerber_statements import * + +def convert(value, src, dst): + if src == dst or src is None or dst is None or value is None: + return value + elif dst == 'mm': + return value * 25.4 + else: + return value / 25.4 + +class Length: + def __init__(self, obj_type): + self.type = obj_type + @dataclass class GerberObject: _ : KW_ONLY polarity_dark : bool = True unit : str = None - def to_primitives(self): + def converted(self, unit): + return replace(self, + **{ + f.name: convert(getattr(self, f.name), self.unit, unit) + for f in fields(self) + }) + + def _conv(self, value, unit): + return convert(value, src=unit, dst=self.unit) + + def with_offset(self, dx, dy, unit='mm'): + dx, dy = self._conv(dx, unit), self._conv(dy, unit) + return self._with_offset(dx, dy) + + def rotate(self, rotation, cx=0, cy=0, unit='mm'): + cx, cy = self._conv(cx, unit), self._conv(cy, unit) + return self._rotate(cx, cy) + + def bounding_box(self, unit=None): + bboxes = [ p.bounding_box for p in self.to_primitives(unit) ] + min_x = min(min_x for (min_x, _min_y), _ in bboxes) + min_y = min(min_y for (_min_x, min_y), _ in bboxes) + max_x = max(max_x for _, (max_x, _max_y) in bboxes) + max_y = max(max_y for _, (_max_x, max_y) in bboxes) + return ((min_x, min_y), (max_x, max_y)) + + def to_primitives(self, unit=None): raise NotImplementedError() @dataclass class Flash(GerberObject): - x : float - y : float + x : Length(float) + y : Length(float) aperture : object - def with_offset(self, dx, dy): + def _with_offset(self, dx, dy): return replace(self, x=self.x+dx, y=self.y+dy) - def rotate(self, rotation, cx=0, cy=0): + def _rotate(self, rotation, cx=0, cy=0): self.x, self.y = gp.rotate_point(self.x, self.y, rotation, cx, cy) - def to_primitives(self): - yield from self.aperture.flash(self.x, self.y) + def to_primitives(self, unit=None): + conv = self.converted(unit) + yield from self.aperture.flash(conv.x, conv.y, unit) def to_statements(self, gs): yield from gs.set_polarity(self.polarity_dark) @@ -48,31 +88,33 @@ class Region(GerberObject): def __bool__(self): return bool(self.poly) - def with_offset(self, dx, dy): + def _with_offset(self, dx, dy): return Region([ (x+dx, y+dy) for x, y in self.poly.outline ], self.poly.arc_centers, polarity_dark=self.polarity_dark, unit=self.unit) - def rotate(self, angle, cx=0, cy=0): + def _rotate(self, angle, cx=0, cy=0): self.poly.outline = [ gp.rotate_point(x, y, angle, cx, cy) for x, y in self.poly.outline ] self.poly.arc_centers = [ - gp.rotate_point(*center, angle, cx, cy) if center else None - for center in self.poly.arc_centers ] + (arc[0], gp.rotate_point(*arc[1], angle, cx, cy)) if arc else None + for arc in self.poly.arc_centers ] def append(self, obj): + if obj.unit != self.unit: + raise ValueError('Cannot append Polyline with "{obj.unit}" coords to Region with "{self.unit}" coords.') if not self.poly.outline: self.poly.outline.append(obj.p1) self.poly.outline.append(obj.p2) if isinstance(obj, Arc): - self.poly.arc_centers.append(obj.center) + self.poly.arc_centers.append((obj.clockwise, obj.center)) else: self.poly.arc_centers.append(None) - def to_primitives(self): + def to_primitives(self, unit=None): self.poly.polarity_dark = polarity_dark - yield self.poly + yield self.poly.converted(unit) def to_statements(self, gs): yield from gs.set_polarity(self.polarity_dark) @@ -87,9 +129,9 @@ class Region(GerberObject): gs.update_point(*point, unit=self.unit) else: - cx, cy = arc_center + clockwise, (cx, cy) = arc_center x2, y2 = point - yield from gs.set_interpolation_mode(CircularCCWModeStmt) + yield from gs.set_interpolation_mode(CircularCWModeStmt if clockwise else CircularCCWModeStmt) yield InterpolateStmt(x2, y2, cx-x2, cy-y2, unit=self.unit) gs.update_point(x2, y2, unit=self.unit) @@ -99,16 +141,16 @@ class Region(GerberObject): @dataclass class Line(GerberObject): # Line with *round* end caps. - x1 : float - y1 : float - x2 : float - y2 : float + x1 : Length(float) + y1 : Length(float) + x2 : Length(float) + y2 : Length(float) aperture : object - def with_offset(self, dx, dy): + def _with_offset(self, dx, dy): return replace(self, x1=self.x1+dx, y1=self.y1+dy, x2=self.x2+dx, y2=self.y2+dy) - def rotate(self, rotation, cx=0, cy=0): + def _rotate(self, rotation, cx=0, cy=0): self.x1, self.y1 = gp.rotate_point(self.x1, self.y1, rotation, cx, cy) self.x2, self.y2 = gp.rotate_point(self.x2, self.y2, rotation, cx, cy) @@ -120,8 +162,9 @@ class Line(GerberObject): def p2(self): return self.x2, self.y2 - def to_primitives(self): - yield gp.Line(*self.p1, *self.p2, self.aperture.equivalent_width, polarity_dark=self.polarity_dark) + def to_primitives(self, unit=None): + conv = self.converted(unit) + yield gp.Line(*conv.p1, *conv.p2, self.aperture.equivalent_width(unit), polarity_dark=self.polarity_dark) def to_statements(self, gs): yield from gs.set_polarity(self.polarity_dark) @@ -134,32 +177,33 @@ class Line(GerberObject): @dataclass class Drill(GerberObject): - x : float - y : float - diameter : float + x : Length(float) + y : Length(float) + diameter : Length(float) - def with_offset(self, dx, dy): + def _with_offset(self, dx, dy): return replace(self, x=self.x+dx, y=self.y+dy) - def rotate(self, angle, cx=0, cy=0): + def _rotate(self, angle, cx=0, cy=0): self.x, self.y = gp.rotate_point(self.x, self.y, angle, cx, cy) - def to_primitives(self): - yield gp.Circle(self.x, self.y, self.diameter/2) + def to_primitives(self, unit=None): + conv = self.converted(unit) + yield gp.Circle(conv.x, conv.y, conv.diameter/2) @dataclass class Slot(GerberObject): - x1 : float - y1 : float - x2 : float - y2 : float - width : float + x1 : Length(float) + y1 : Length(float) + x2 : Length(float) + y2 : Length(float) + width : Length(float) - def with_offset(self, dx, dy): + def _with_offset(self, dx, dy): return replace(self, x1=self.x1+dx, y1=self.y1+dy, x2=self.x2+dx, y2=self.y2+dy) - def rotate(self, rotation, cx=0, cy=0): + def _rotate(self, rotation, cx=0, cy=0): if cx is None: cx = (self.x1 + self.x2) / 2 cy = (self.y1 + self.y2) / 2 @@ -174,22 +218,23 @@ class Slot(GerberObject): def p2(self): return self.x2, self.y2 - def to_primitives(self): - yield gp.Line(*self.p1, *self.p2, self.width, polarity_dark=self.polarity_dark) + def to_primitives(self, unit=None): + conv = self.converted(unit) + yield gp.Line(*conv.p1, *conv.p2, conv.width, polarity_dark=self.polarity_dark) @dataclass class Arc(GerberObject): - x1 : float - y1 : float - x2 : float - y2 : float - cx : float - cy : float - flipped : bool + x1 : Length(float) + y1 : Length(float) + x2 : Length(float) + y2 : Length(float) + cx : Length(float) + cy : Length(float) + clockwise : bool aperture : object - def with_offset(self, dx, dy): + def _with_offset(self, dx, dy): return replace(self, x1=self.x1+dx, y1=self.y1+dy, x2=self.x2+dx, y2=self.y2+dy) @property @@ -204,15 +249,16 @@ class Arc(GerberObject): def center(self): return self.cx + self.x1, self.cy + self.y1 - def rotate(self, rotation, cx=0, cy=0): + def _rotate(self, rotation, cx=0, cy=0): # rotate center first since we need old x1, y1 here new_cx, new_cy = gp.rotate_point(*self.center, rotation, cx, cy) self.x1, self.y1 = gp.rotate_point(self.x1, self.y1, rotation, cx, cy) self.x2, self.y2 = gp.rotate_point(self.x2, self.y2, rotation, cx, cy) self.cx, self.cy = new_cx - self.x1, new_cy - self.y1 - def to_primitives(self): - yield gp.Arc(*astuple(self)[:7], width=self.aperture.equivalent_width, polarity_dark=self.polarity_dark) + def to_primitives(self, unit=None): + conv = self.converted(unit) + yield gp.Arc(*astuple(conv)[:7], width=self.aperture.equivalent_width(unit), polarity_dark=self.polarity_dark) def to_statements(self, gs): yield from gs.set_polarity(self.polarity_dark) -- cgit