from math import ceil
import gdsfactory as gf
from gdsfactory.typings import Float2, LayerSpec
[docs]
@gf.cell
def via_generator(
width: float = 1,
length: float = 1,
via_size: Float2 = (0.17, 0.17),
via_layer: LayerSpec = (66, 44),
via_enclosure: Float2 = (0.06, 0.06),
via_spacing: Float2 = (0.17, 0.17),
) -> gf.Component:
"""Return vias within the area of width x length \
and set number of rows and number of columns as a \
global variable to be used outside the function.
.. plot::
:include-source:
import sky130
c = sky130.pcells.via_generator()
c.plot()
"""
c = gf.Component()
nr = ceil(length / (via_size[1] + via_spacing[1]))
nc = ceil(width / (via_size[0] + via_spacing[0]))
if (length - nr * via_size[1] - (nr - 1) * via_spacing[1]) / 2 < via_enclosure[1]:
nr -= 1
nr = max(nr, 1)
if (width - nc * via_size[0] - (nc - 1) * via_spacing[0]) / 2 < via_enclosure[0]:
nc -= 1
nc = max(nc, 1)
via_sp = (via_size[0] + via_spacing[0], via_size[1] + via_spacing[1])
rect_via = gf.components.rectangle(size=via_size, layer=via_layer)
c.add_array(rect_via, rows=nr, columns=nc, spacing=via_sp)
return c
def demo_via():
width = 1.5
length = 1.5
via_size = (
0.17,
0.17,
) # via4:(0.8,0.8),via3,via2 : (0.2,0.2) ,via1 : (0.15,0.15),licon: (0.17,0.17)
via_spacing = (
0.17,
0.17,
) # via4:(0.8,0.8) via2 :(0.2,0.2), via1,licon :(0.17,0.17)
via_layer = (
66,
44,
) # via4:(71,44),via3 :(70,44)via2 : (69,44) ,via1 : (68,44),licon: (66,44)
via_enclosure = (
0.06,
0.06,
) # via4: (0.19,0.19)via2 : (0.04,0.04) via1 : (0.055,0.055),via3,licon: (0.06,0.06)
bottom_layer: LayerSpec = (
65,
44,
) # m4 :(71,20),m3:(70:20) , m2 :(69,20), m1 :(68,20),tap: (65,44)
rect = gf.components.rectangle(size=(width, length), layer=bottom_layer)
nr = ceil(length / (via_size[1] + via_spacing[1]))
nc = ceil(width / (via_size[0] + via_spacing[0]))
c1 = gf.Component("via test for rectangle")
c1.add_label(
f"test for via4 over met4 within {width} x {length} area",
position=(width / 2, length + via_enclosure[1]),
)
c1.add_ref(rect)
c = via_generator(
width=width,
length=length,
via_size=via_size,
via_spacing=via_spacing,
via_layer=via_layer,
)
v = c1.add_ref(c)
v.move(
(
(width - nc * via_size[0] - (nc - 1) * via_spacing[0]) / 2,
(length - nr * via_size[1] - (nr - 1) * via_spacing[1]) / 2,
)
)
c2 = gf.Component("via test for bending structure")
rect_out = gf.components.rectangle(size=(4 * width, 4 * length))
d = gf.Component()
x1 = d.add_ref(rect)
x2 = d.add_ref(rect_out)
x1.move((1.5 * width, 1.5 * length))
c2.add_ref(gf.geometry.boolean(A=x2, B=x1, operation="A-B", layer=bottom_layer))
c2.add_label(
"test for via4 over met4 within a bending area",
position=(width, 4 * length + via_enclosure[1]),
)
for i in range(2):
v = via_generator(
width=x2.xmax - x1.xmax,
length=x1.ymax - x1.ymin,
via_enclosure=via_enclosure,
via_size=via_size,
via_spacing=via_spacing,
via_layer=via_layer,
)
vi = c2.add_ref(v)
vi.movex(
(x2.xmax - x1.xmax - nc * via_size[0] - (nc - 1) * via_spacing[0]) / 2
+ i * (x2.xmax - x1.xmin)
)
vi.movey(
x1.ymin
- x2.ymin
+ (x1.ymax - x1.ymin - nr * via_size[1] - (nr - 1) * via_spacing[1]) / 2
)
for i in range(2):
h = via_generator(
width=x1.xmax - x1.xmin,
length=x2.ymax - x1.ymax,
via_enclosure=via_enclosure,
via_size=via_size,
via_spacing=via_spacing,
via_layer=via_layer,
)
vi = c2.add_ref(h)
vi.movey(
(x2.ymax - x1.ymax - nr * via_size[1] - (nr - 1) * via_spacing[1]) / 2
+ i * (x2.ymax - x1.ymin)
)
vi.movex(
x1.xmin
- x2.xmin
+ (x1.xmax - x1.xmin - nc * via_size[0] - (nc - 1) * via_spacing[0]) / 2
)
for i in range(2):
for j in range(2):
cor = via_generator(
width=x2.xmax - x1.xmax,
length=x2.ymax - x1.ymax,
via_enclosure=via_enclosure,
via_size=via_size,
via_spacing=via_spacing,
via_layer=via_layer,
)
co = c2.add_ref(cor)
co.movex(
(x2.xmax - x1.xmax - nc * via_size[0] - (nc - 1) * via_spacing[0]) / 2
)
co.movey(
(x1.ymin - x2.ymin - nr * via_size[1] - (nr - 1) * via_spacing[1]) / 2
)
co.movex(j * (x2.xmax - x1.xmin))
co.movey(i * (x2.ymax - x1.ymin))
return c2
if __name__ == "__main__":
# c = via_generator()
c = demo_via()
c.show(show_ports=True)