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import math
from dataclasses import dataclass, KW_ONLY, astuple
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)
gs.update_point(self.x, self.y)
class Region(GerberObject):
def __init__(self, outline=None, arc_centers=None, *, polarity_dark):
super().__init__(polarity_dark=polarity_dark)
outline = [] if outline is None else outline
arc_centers = [] if arc_centers is None else arc_centers
self.poly = gp.ArcPoly(outline, arc_centers)
def __len__(self):
return len(self.poly)
def __bool__(self):
return bool(self.poly)
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.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)
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[1:], 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)
gs.update_point(*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)
@dataclass
class Arc(GerberObject):
x1 : float
y1 : float
x2 : float
y2 : float
cx : float
cy : float
flipped : bool
aperture : object
def with_offset(self, dx, dy):
return replace(self, x=self.x+dx, y=self.y+dy)
@property
def p1(self):
return self.x1, self.y1
@property
def p2(self):
return self.x2, self.y2
@property
def center(self):
return self.x1 + self.cx, self.y1 + self.cy
def rotate(self, rotation, cx=None, cy=None):
cx, 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 = cx - self.x1, 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_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)
yield InterpolateStmt(self.x2, self.y2, self.cx, self.cy)
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