def merge_well(self,
template: TemplateBase,
inst_list: List[PyLayInstance],
sub_type: str,
*,
threshold: str = '',
res_type: str = '',
merge_imp: bool = False) -> None:
"""Merge the well of the given instances together."""
if threshold is not None:
lay_iter = chain(
self.get_well_layers(sub_type),
self.get_threshold_layers(sub_type,
threshold,
res_type=res_type))
else:
lay_iter = self.get_well_layers(sub_type)
if merge_imp:
lay_iter = chain(
lay_iter, self.get_implant_layers(sub_type, res_type=res_type))
for lay_purp in lay_iter:
tot_box = BBox.get_invalid_bbox()
for inst in inst_list:
cur_box = inst.master.get_rect_bbox(lay_purp)
tot_box.merge(inst.transform_master_object(cur_box))
if tot_box.is_physical():
template.add_rect(lay_purp, tot_box)
def get_bounding_box(self,
grid: RoutingGrid,
layer: Union[int, str] = -1000) -> BBox:
"""Calculate the overall bounding box of this port on the given layer.
Parameters
----------
grid : RoutingGrid
the RoutingGrid of this Port.
layer : Union[int, str]
the layer ID. If Negative, check if this port is on a single layer,
then return the result.
Returns
-------
bbox : BBox
the bounding box.
"""
layer = self._get_layer(layer)
box = BBox.get_invalid_bbox()
for geo in self._pin_dict[layer]:
if isinstance(geo, BBox):
box.merge(geo)
else:
box.merge(grid.get_warr_bbox(geo))
return box
def test_invalid_bbox():
ans = BBox.get_invalid_bbox()
assert ans.is_valid() is False