summaryrefslogtreecommitdiff
path: root/gerbonara/cad/primitives.py
blob: d232d20d01e59ca917d47902fd51fcdf83ec6c70 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
import math
from copy import copy
from itertools import zip_longest
from dataclasses import dataclass, field, KW_ONLY

from ..utils import LengthUnit, MM, rotate_point
from ..layers import LayerStack
from ..graphic_objects import Line, Arc, Flash
from ..apertures import Aperture, CircleAperture, RectangleAperture, ExcellonTool


def sgn(x):
    return -1 if x < 0 else 1


class Board:
    def __init__(self):
        self.objects = set()

    def to_layer_stack(self, layer_stack):
        if layer_stack is None:
            layer_stack = LayerStack()

        for obj in self.objects:
            obj.render(stack)


@dataclass
class Positioned:
    x: float
    y: float
    _: KW_ONLY
    rotation: float = 0.0
    unit: LengthUnit = MM
    parent: object = None

    @property
    def abs_pos(self, dx, dy, da):
        x, y = rotate_point(self.x, self.y, da)

        if self.parent is None:
            px, py, pa = dx, dy, 0
        else:
            px, py, pa = self.parent.abs_pos(dx, dy, da)

        return x+px, y+py, self.rotation+da+pa


@dataclass
class Pad(Positioned):
    pass

@dataclass
class SMDPad(Pad):
    copper_aperture: Aperture
    mask_aperture: Aperture
    paste_aperture: Aperture
    silk_features: list
    side: str = 'top'

    def to_layer_stack(self, layer_stack):
        x, y, rotation = self.abs_pos
        stack[self.side, 'copper'].objects.append(Flash(x, y, self.copper_aperture.rotated(rotation), unit=self.unit))
        stack[self.side, 'mask'  ].objects.append(Flash(x, y, self.mask_aperture.rotated(rotation), unit=self.unit))
        stack[self.side, 'paste' ].objects.append(Flash(x, y, self.paste_aperture.rotated(rotation), unit=self.unit))
        stack[self.side, 'silk'  ].objects.extend([copy(feature).rotate(rotation).offset(x, y, self.unit)
                                                 for feature in self.silk_features])

    def flip(self):
        self.side = 'top' if self.side == 'bottom' else 'top'


class THTPad(Pad):
    drill_dia: float
    pad_top: SMDPad
    pad_bottom: SMDPad = None
    aperture_inner: Aperture = None
    plated: bool = True

    def __post_init__(self):
        if self.pad_bottom is None:
            self.pad_bottom = copy(self.pad_top)
            self.pad_bottom.flip()

        self.pad_top.parent = self.pad_bottom.parent = self

        if (self.pad_top.side, self.pad_bottom.side) != ('top', 'bottom'):
            raise ValueError(f'The top and bottom pads must have side set to top and bottom, respectively. Currently, the top pad side is set to {self.pad_top.side} and the bottom pad side to {self.pad_bottom.side}.')

    def to_layer_stack(self, layer_stack, x, y, rotation):
        x, y, rotation = self.abs_pos
        self.top_pad.to_layer_stack(layer_stack)
        self.bottom_pad.to_layer_stack(layer_stack)

        for (side, use), layer in layer_stack.inner_layers:
            layer.objects.append(Flash(x, y, self.aperture_inner.rotated(rotation), unit=self.unit))

        hole = Flash(self.x, self.y, ExcellonTool(self.drill_dia, plated=self.plated, unit=self.unit), unit=self.unit)
        if self.plated:
            layer_stack.drill_pth.objects.append(hole)
        else:
            layer_stack.drill_npth.objects.append(hole)


@dataclass
class Via(Positioned):
    diameter: float
    hole: float

    def to_layer_stack(self, layer_stack):
        x, y, rotation = self.abs_pos

        aperture = CircleAperture(diameter=self.diameter, unit=self.unit)
        tool = ExcellonTool(diameter=self.hole, unit=self.unit)
        
        for (side, use), layer in layer_stack.copper_layers:
            layer.objects.append(Flash(x, y, aperture, unit=self.unit))

        layer_stack.drill_pth.objects.append(Flash(x, y, tool, unit=self.unit))


@dataclass
class Trace:
    width: float
    start: object = None
    end: object = None
    side: str = 'top'
    waypoints: [(float, float)] = field(default_factory=list)
    style: str = 'direct'
    orientation: [str] = tuple() # 'top' or 'bottom'
    roundover: float = 0
    unit: LengthUnit = MM
    parent: object = None

    DIRECT = 'direct'
    OBLIQUE = 'oblique'
    ORTHO = 'ortho'

    CW = 'cw'
    CCW = 'ccw'

    def _route(self, p1, p2, orientation):
        x1, y1 = p1
        x2, y2 = p2
        dx = x2-x1
        dy = y2-y1

        yield p1

        if self.style == 'direct' or \
                math.isclose(x1, x2, abs_tol=1e-6) or math.isclose(y1, y2, abs_tol=1e-6) or \
                (self.style == 'oblique' and math.isclose(dx, dy, abs_tol=1e-6)):
            yield p2
            return

        p = (abs(dy) > abs(dx)) == ((dx >= 0) == (dy >= 0))
        if self.style == 'oblique':
            if p == (orientation == 'cw'):
                if abs(dy) > abs(dx):
                    yield (0, sgn(dy)*(abs(dy)-abs(dx)))
                else:
                    yield (sgn(dx)*(abs(dx)-abs(dy)), 0)
            else:
                if abs(dy) > abs(dx):
                    yield (dx, sgn(dy)*abs(dx))
                else:
                    yield (sgn(dx)*abs(dy), dy)
        else: # self.style == 'ortho'
            if p == (orientation == 'cw'):
                if abs(dy) > abs(dx):
                    yield (0, dy)
                else:
                    yield (dx, 0)
            else:
                if abs(dy) > abs(dx):
                    yield (dx, 0)
                else:
                    yield (0, dy)

        yield p2
        
    def to_layer_stack(self, layer_stack, x, y, rotation):
        start, end = self.start, self.end

        if not isinstance(start, tuple):
            start = start.abs_pos
        if not isinstance(end, tuple):
            end = end.abs_pos

        points = [start, *self.waypoints, end]
        aperture = CircleAperture(diameter=self.width, unit=self.unit)

        for p1, p2, orientation in zip_longest(points[:-1], points[1:], self.orientation):
            layer_stack[self.side, 'copper'].extend(self._route(p1, p2, orientation, aperture))

if __name__ == '__main__':
    from ..utils import setup_svg, Tag
    from ..newstroke import Newstroke

    font = Newstroke()

    tags = []
    for n in range(0, 8*6):
        theta = 2*math.pi / (8*6) * n
        dx, dy = math.cos(theta), math.sin(theta)
        tr = Trace(0.1, style='oblique')
        points_cw = list(tr._route((0, 0), (dx, dy), 'cw'))
        points_ccw = list(tr._route((0, 0), (dx, dy), 'ccw'))

        pd = lambda points: f'M {points[0][0]}, {points[0][1]} ' + ' '.join(f'L {x}, {y}' for x, y in points[1:])

        strokes = list(font.render(f'α={n/(8*6)*360}', size=0.2))
        xs = [x for st in strokes for x, _y in st]
        ys = [y for st in strokes for _x, y in st]
        min_x, min_y, max_x, max_y = min(xs), min(ys), max(xs), max(ys)

        xf = f'translate({n//6*1.1 + 0.1} {n%6*1.3 + 0.3}) scale(0.5 0.5) translate(1 1)'
        txf = f'{xf} translate(0 -1.2) translate({-(max_x-min_x)/2} {-max_y})'

        tags.append(Tag('circle', cx='0', cy='0', r='1',
                        fill='none', stroke='black', opacity='0.5', stroke_width='0.05',
                        transform=xf))
        tags.append(Tag('path',
                        fill='none',
                        stroke='red', opacity='0.5', stroke_width='0.05', stroke_linecap='round',
                        transform=xf, d=pd(points_cw)))
        tags.append(Tag('path',
                        fill='none',
                        stroke='blue', opacity='0.5', stroke_width='0.05', stroke_linecap='round',
                        transform=xf, d=pd(points_ccw)))
        tags.append(Tag('path',
                        fill='none',
                        stroke='black', opacity='0.5', stroke_width='0.02', stroke_linejoin='round', stroke_linecap='round',
                        transform=txf, d=' '.join(pd(points) for points in strokes)))

    print(setup_svg([Tag('g', tags, transform='scale(20 20)')], [(0, 0), (20*10*1.1 + 0.1, 20*10*1.3 + 0.1)]))