from dataclasses import dataclass, KW_ONLY from . import graphic_primitives as gp from .gerber_statements import * @dataclass 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() @dataclass 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) @dataclass class Drill(GerberObject): x : float y : float diameter : float def with_offset(self, dx, dy): return replace(self, x=self.x+dx, y=self.y+dy) def rotate(self, angle, cx=None, cy=None): 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) @dataclass class Slot(GerberObject): x1 : float y1 : float x2 : float y2 : float width : float 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.width, polarity_dark=self.polarity_dark) 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)