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56 changes: 55 additions & 1 deletion src/pyedb/grpc/database/padstacks.py
Original file line number Diff line number Diff line change
Expand Up @@ -45,6 +45,7 @@
from ansys.edb.core.geometry.point_data import PointData as GrpcPointData
from ansys.edb.core.geometry.polygon_data import PolygonData as GrpcPolygonData
from ansys.edb.core.utility.value import Value as GrpcValue
import numpy as np
import rtree

from pyedb.generic.general_methods import generate_unique_name
Expand Down Expand Up @@ -1328,7 +1329,7 @@ def get_padstack_instances_rtree_index(self, nets=None):
else:
instances = list(self.instances.values())
for inst in instances:
padstack_instances_index.insert(inst.id, inst.position)
padstack_instances_index.insert(inst.edb_uid, inst.position)
return padstack_instances_index

def get_padstack_instances_id_intersecting_polygon(self, points, nets=None, padstack_instances_index=None):
Expand Down Expand Up @@ -1481,6 +1482,59 @@ def merge_via_along_lines(
inst.delete()
return instances_created

def reduce_via_in_bounding_box(self, bounding_box, x_samples, y_samples, nets=None):
"""Reduces the number of vias intersecting bounding box and nets by x and y samples.

Parameters
----------
bounding_box : tuple or list.
bounding box, [x1, y1, x2, y2]
x_samples : int
y_samples : int
nets : str or list, optional
net name or list of nets name applying filtering on padstack instances selection. If ``None`` is provided
all instances are included in the index. Default value is ``None``.

Returns
-------
bool
``True`` when succeeded ``False`` when failed.
"""

padstacks_inbox = self.get_padstack_instances_intersecting_bounding_box(bounding_box, nets)
if not padstacks_inbox:
self._logger.info("no padstack in bounding box")
return False
else:
if len(padstacks_inbox) <= (x_samples * y_samples):
self._logger.info(f"more samples {x_samples * y_samples} than existing {len(padstacks_inbox)}")
return False
else:
# extract ids and positions
vias = {item: self.instances[item].position for item in padstacks_inbox}
ids, positions = zip(*vias.items())
pt_x, pt_y = zip(*positions)

# meshgrid
_x_min, _x_max = min(pt_x), max(pt_x)
_y_min, _y_max = min(pt_y), max(pt_y)

x_grid, y_grid = np.meshgrid(
np.linspace(_x_min, _x_max, x_samples), np.linspace(_y_min, _y_max, y_samples)
)

# mapping to meshgrid
to_keep = {
ids[np.argmin(np.square(_x - pt_x) + np.square(_y - pt_y))]
for _x, _y in zip(x_grid.ravel(), y_grid.ravel())
}

for item in padstacks_inbox:
if item not in to_keep:
self.instances[item].delete()

return True

def merge_via(self, contour_boxes, net_filter=None, start_layer=None, stop_layer=None):
"""Evaluate pad-stack instances included on the provided point list and replace all by single instance.

Expand Down
12 changes: 12 additions & 0 deletions tests/grpc/system/test_edb_padstacks.py
Original file line number Diff line number Diff line change
Expand Up @@ -513,6 +513,18 @@ def test_via_merge(self, edb_examples):
# edbapp.close()
pass

def test_reduce_via_in_bounding_box(self):
source_path = os.path.join(local_path, "example_models", test_subfolder, "vias_300.aedb")
edbapp = Edb(edbpath=source_path, edbversion=desktop_version)
assert len(edbapp.padstacks.instances) == 301
# empty bounding box
assert edbapp.padstacks.reduce_via_in_bounding_box([-16e-3, -7e-3, -13e-3, -6e-3], 10, 10) is False
# over sampling
assert edbapp.padstacks.reduce_via_in_bounding_box([-20e-3, -10e-3, 20e-3, 10e-3], 20, 20) is False
assert edbapp.padstacks.reduce_via_in_bounding_box([-20e-3, -10e-3, 20e-3, 10e-3], 10, 10) is True
assert len(edbapp.padstacks.instances) == 96
edbapp.close_edb()

def test_via_merge3(self):
source_path = os.path.join(local_path, "example_models", "TEDB", "merge_via_4layers.aedb")
edbapp = Edb(edbpath=source_path, edbversion=desktop_version)
Expand Down
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