def align_TE_on_via():
cell = dl.Device("Align TE on VIA")
circle = pg.circle(radius=50, layer=pt.LayoutDefault.layerVias)
cross = pg.cross(width=30, length=250, layer=pt.LayoutDefault.layerVias)
g = Group([circle, cross])
g.align(alignment='x')
g.align(alignment='y')
circle.add(cross)
viapattern = pg.union(circle, 'A+B', layer=pt.LayoutDefault.layerVias)
TEpattern = pg.union(circle, 'A+B',
layer=pt.LayoutDefault.layerTop).copy('tmp',
scale=0.8)
cell.add(viapattern)
cell.add(TEpattern)
cell.align(alignment='x')
cell.align(alignment='y')
cell.flatten()
return cell
def join(device: Device) -> Device:
''' returns a copy of device with all polygons joined.
Parameters
----------
device : phidl.Device.
'''
out_cell = pg.union(device,
by_layer=True,
precision=0.001,
join_first=False)
return out_cell
def _calculate_pre_post_area(cell_test, cell_ref):
area_pre = cell_ref.area()
c_flat = pg.union(cell_ref, by_layer=False, layer=100)
if isinstance(cell_test, Device):
c_flat.add_ref(cell_test)
else:
if isinstance(cell_test, DeviceReference):
c_flat.add(cell_test)
area_post = _get_cell_area(c_flat)
return area_pre, area_post
# If you have several polygons which form a single compound shape and you want # to join (union) them all together, you can do it with the pg.union() command: # Note: Like all phidl.geometry functions, this will return NEW geometry! In # particular, this function will return a new *flattened* geometry D = Device() D << pg.ellipse(layer=0) D << pg.ellipse(layer=0).rotate(15 * 1) D << pg.ellipse(layer=0).rotate(15 * 2) D << pg.ellipse(layer=0).rotate(15 * 3) D << pg.ellipse(layer=1).rotate(15 * 4) D << pg.ellipse(layer=1).rotate(15 * 5) # We have two options to unioning - take all polygons, regardless of # layer, and join them together (in this case on layer 5) like so: D_joined = pg.union(D, by_layer=False, layer=5) # Or we can perform the union operate by-layer D_joined_by_layer = pg.union(D, by_layer=True) dj = D << D_joined djl = D << D_joined_by_layer dj.xmax += 25 djl.xmax += 50 qp(D) #============================================================================== # Comparing two Devices #============================================================================== # Sometimes you want to be able to test whether two Devices are identical or
def _get_cell_area(cell):
c_flat = pg.union(cell, by_layer=False, layer=100)
return c_flat.area()