From 57307528863e2fc8c1c1c7d0489603ce0686e5f0 Mon Sep 17 00:00:00 2001 From: jaseg Date: Tue, 28 Dec 2021 21:40:39 +0100 Subject: WIP --- gerbonara/gerber/graphic_objects.py | 165 ++++++++++++++++++++++++++++++++++++ 1 file changed, 165 insertions(+) create mode 100644 gerbonara/gerber/graphic_objects.py (limited to 'gerbonara/gerber/graphic_objects.py') diff --git a/gerbonara/gerber/graphic_objects.py b/gerbonara/gerber/graphic_objects.py new file mode 100644 index 0000000..55d1b9c --- /dev/null +++ b/gerbonara/gerber/graphic_objects.py @@ -0,0 +1,165 @@ + +import graphic_primitives as gp + +class GerberObject: + _ : KW_ONLY + polarity_dark : bool = True + + def to_primitives(self): + raise NotImplementedError() + +@dataclass +class Flash(GerberObject): + x : float + y : float + aperture : object + + def with_offset(self, dx, dy): + return replace(self, x=self.x+dx, y=self.y+dy) + + def rotate(self, rotation, cx=None, cy=None): + 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_statements(self, gs): + yield from gs.set_polarity(self.polarity_dark) + yield from gs.set_aperture(self.aperture) + yield FlashStmt(self.x, self.y) + +class Region(GerberObject): + def __init__(self, outline=[], arc_centers=None, *, polarity_dark): + super().__init__(self, polarity_dark=polarity_dark) + self.poly = gp.ArcPoly() + + def with_offset(self, dx, dy): + return Region([ (x+dx, y+dy) for x, y in outline ], radii, polarity_dark=self.polarity_dark) + + 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(x, y, angle, cx, cy) for x, y in self.poly.arc_centers ] + + def append(self, obj): + if not self.outline: + self.poly.outline.append(obj.p1) + self.poly.outline.append(obj.p2) + + if isinstance(obj, Arc): + self.poly.arc_centers.append(obj.center) + else: + self.poly.arc_centers.append(None) + + def to_primitives(self): + self.poly.polarity_dark = polarity_dark + yield self.poly + + def to_statements(self, gs): + yield RegionStartStmt() + + yield from gs.set_current_point(self.poly.outline[0]) + + for point, arc_center in zip(self.poly.outline, self.poly.arc_centers): + if arc_center is None: + yield from gs.set_interpolation_mode(LinearModeStmt) + yield InterpolateStmt(*point) + + else: + cx, cy = arc_center + x2, y2 = point + yield from gs.set_interpolation_mode(CircularCCWModeStmt) + yield InterpolateStmt(x2, y2, cx-x2, cy-y2) + + yield RegionEndStmt() + + +class Line(GerberObject): + # Line with *round* end caps. + x1 : float + y1 : float + x2 : float + y2 : float + aperture : object + + 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=None, cy=None): + if cx is None: + cx = (self.x1 + self.x2) / 2 + cy = (self.y1 + self.y2) / 2 + 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) + + @property + def p1(self): + return self.x1, self.y1 + + @property + 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_statements(self, gs): + yield from gs.set_aperture(self.aperture) + yield from gs.set_interpolation_mode(LinearModeStmt) + yield from gs.set_current_point(self.p1) + yield InterpolateStmt(*self.p2) + + +class Arc(GerberObject): + x : float + y : float + r : float + angle1 : float # radians! + angle2 : float # radians! + aperture : object + + @classmethod + def from_coords(kls, start, end, center_delta, aperture, flipped=False, polarity_dark=True): + x0, y0 = start + x1, y1 = end + dx, dy = center_delta + cx, cy = x0+dx, y0+dy + angle1 = math.atan2(y0-cy, x0-cx) + angle2 = math.atan2(y1-cy, x1-cx) + aperture = self.aperture + if flipped: + angle1, angle2 = angle2, angle1 + r = math.sqrt(dx**2 + dy**2) + # r should be approximately (depending on coordinate resolution) equal for center->start and center->end + return kls(cx, cy, r, angle1, angle2, polarity_dark=polarity_dark) + + def with_offset(self, dx, dy): + return replace(self, x=self.x+dx, y=self.y+dy) + + @property + def p1(self): + return self.x + self.r*sin(self.angle1), self.y + self.r*cos(self.angle1) + + @property + def p2(self): + return self.x + self.r*sin(self.angle2), self.y + self.r*cos(self.angle2) + + @property + def center(self): + return (self.x, self.y) + + def rotate(self, rotation, cx=None, cy=None): + self.x, self.y = gp.rotate_point(self.x, self.y, rotation, cx, cy) + self.angle1 = (self.angle1+rotation) % (2*math.pi) + self.angle2 = (self.angle2+rotation) % (2*math.pi) + + def to_primitives(self): + yield gp.Arc(self.x, self.y, self.r, self.angle1, self.angle2, self.aperture.equivalent_width, polarity_dark=self.polarity_dark) + + def to_statements(self, gs): + yield from gs.set_aperture(self.aperture) + yield from gs.set_interpolation_mode(CircularCCWModeStmt) + yield from gs.set_current_point(self.p1) + x2, y2 = self.p2 + yield InterpolateStmt(x2, y2, self.x-x2, self.y-y2) + + -- cgit