diff options
Diffstat (limited to 'gerbonara/cad/primitives.py')
| -rw-r--r-- | gerbonara/cad/primitives.py | 66 |
1 files changed, 48 insertions, 18 deletions
diff --git a/gerbonara/cad/primitives.py b/gerbonara/cad/primitives.py index 6ffd4e2..f581c38 100644 --- a/gerbonara/cad/primitives.py +++ b/gerbonara/cad/primitives.py @@ -4,7 +4,7 @@ import math import warnings from copy import copy from itertools import zip_longest, chain -from dataclasses import dataclass, field, KW_ONLY +from dataclasses import dataclass, field, replace, KW_ONLY from collections import defaultdict from ..utils import LengthUnit, MM, rotate_point, svg_arc, sum_bounds, bbox_intersect, Tag, offset_bounds @@ -14,6 +14,9 @@ from ..apertures import Aperture, CircleAperture, ObroundAperture, RectangleAper from ..newstroke import Newstroke +class UNDEFINED: + pass + def sgn(x): return -1 if x < 0 else 1 @@ -115,7 +118,7 @@ class Board: def layer_stack(self, layer_stack=None): if layer_stack is None: - layer_stack = LayerStack() + layer_stack = LayerStack(board_name='proto') cache = {} for obj in chain(self.objects): @@ -319,6 +322,7 @@ class Text(Positioned): xs = [x for points in strokes for x, _y in points] ys = [y for points in strokes for _x, y in points] min_x, min_y, max_x, max_y = min(xs), min(ys), max(xs), max(ys) + h = self.font_size + self.stroke_width # (max_y - min_y) if self.h_align == 'left': x0 = 0 @@ -329,16 +333,16 @@ class Text(Positioned): else: raise ValueError('h_align must be one of "left", "center", or "right".') - if self.v_align == 'top': - y0 = -(max_y - min_y) + if self.v_align == 'bottom': + y0 = h elif self.v_align == 'middle': - y0 = -(max_y - min_y)/2 - elif self.v_align == 'bottom': + y0 = h/2 + elif self.v_align == 'top': y0 = 0 else: raise ValueError('v_align must be one of "top", "middle", or "bottom".') - if self.side == 'bottom': + if self.flip: x0 += min_x + max_x x_sign = -1 else: @@ -348,7 +352,7 @@ class Text(Positioned): for stroke in strokes: for (x1, y1), (x2, y2) in zip(stroke[:-1], stroke[1:]): - obj = Line(x0+x_sign*x1, y0-y1, x0+x_sign*x2, y0-y2, aperture=ap, unit=self.unit, polarity_dark=self.polarity_dark) + obj = Line(x0+x_sign*x1, y0+y1, x0+x_sign*x2, y0+y2, aperture=ap, unit=self.unit, polarity_dark=self.polarity_dark) obj.rotate(rotation) obj.offset(obj_x, obj_y) layer_stack['bottom' if flip else 'top', self.layer].objects.append(obj) @@ -365,11 +369,11 @@ class Text(Positioned): x0 = -approx_w if self.v_align == 'top': - y0 = -approx_h + y0 = 0 elif self.v_align == 'middle': y0 = -approx_h/2 elif self.v_align == 'bottom': - y0 = 0 + y0 = -approx_h return (self.x+x0, self.y+y0), (self.x+x0+approx_w, self.y+y0+approx_h) @@ -382,6 +386,7 @@ class PadStackAperture: offset_x: float = 0 # in PadStack units offset_y: float = 0 rotation: float = 0 + invert: bool = False @dataclass(frozen=True, slots=True) @@ -396,20 +401,20 @@ class PadStack: def flashes(self, x, y, rotation: float = 0, flip: bool = False): for ap in self.apertures: aperture = ap.aperture.rotated(ap.rotation + rotation) - fl = Flash(ap.offset_x, ap.offset_y) + fl = Flash(ap.offset_x, ap.offset_y, aperture, polarity_dark=not ap.invert, unit=self.unit) fl.rotate(rotation) fl.offset(x, y) - side = fl.side + side = ap.side if flip: side = {'top': 'bottom', 'bottom': 'top'}.get(side, side) - yield side, fl.layer, fl + yield side, ap.layer, fl def render(self, layer_stack, x, y, rotation: float = 0, flip: bool = False): for side, layer, flash in self.flashes(x, y, rotation, flip): - if side == 'drill' and use == 'plated': + if side == 'drill' and layer == 'plated': layer_stack.drill_pth.objects.append(flash) - elif side == 'drill' and use == 'nonplated': + elif side == 'drill' and layer == 'nonplated': layer_stack.drill_npth.objects.append(flash) elif (side, layer) in layer_stack: @@ -450,16 +455,36 @@ class SMDStack(PadStack): @dataclass(frozen=True, slots=True) +class MechanicalHoleStack(PadStack): + drill_dia: float + mask_expansion: float = 0.0 + mask_aperture = None + + @property + def apertures(self): + mask_aperture = self.mask_aperture or CircleAperture(self.drill_dia + self.mask_expansion, unit=self.unit) + yield PadStackAperture(mask_aperture, 'top', 'mask') + yield PadStackAperture(mask_aperture, 'bottom', 'mask') + + @property + def single_sided(self): + return False + + +@dataclass(frozen=True, slots=True) class THTPad(PadStack): drill_dia: float pad_top: SMDStack pad_bottom: SMDStack = None - aperture_inner: Aperture = None + aperture_inner: Aperture = UNDEFINED plated: bool = True def __post_init__(self): if self.pad_bottom is None: object.__setattr__(self, 'pad_bottom', replace(self.pad_top, flip=True)) + + if self.aperture_inner is UNDEFINED: + object.__setattr__(self, 'aperture_inner', self.pad_top.aperture) if self.pad_top.flip: raise ValueError('top pad cannot be flipped') @@ -472,7 +497,8 @@ class THTPad(PadStack): def apertures(self): yield from self.pad_top.apertures yield from self.pad_bottom.apertures - yield PadStackAperture(self.aperture_inner, 'inner', 'copper') + if self.aperture_inner is not None: + yield PadStackAperture(self.aperture_inner, 'inner', 'copper') yield PadStackAperture(ExcellonTool(self.drill_dia, plated=self.plated, unit=self.unit), 'drill', self.plating) @property @@ -486,7 +512,7 @@ class THTPad(PadStack): @classmethod def circle(kls, drill_dia, dia, rotation=0, mask_expansion=0.0, paste_expansion=0.0, paste=True, plated=True, unit=MM): - pad = SMDStack.circle(dia, rotation, mask_expansion, paste_expansion, paste, unit=unit) + pad = SMDStack.circle(dia, mask_expansion, paste_expansion, paste, unit=unit) return kls(drill_dia, pad, plated=plated) @classmethod @@ -538,6 +564,10 @@ class Via(FrozenPositioned): class Pad(Positioned): pad_stack: PadStack + def render(self, layer_stack, cache=None): + x, y, rotation, flip = self.abs_pos + self.pad_stack.render(layer_stack, x, y, rotation, flip) + @property def single_sided(self): return self.pad_stack.single_sided |