mirror of https://github.com/VLSIDA/OpenRAM.git
63 lines
1.8 KiB
Python
63 lines
1.8 KiB
Python
# See LICENSE for licensing information.
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#
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# Copyright (c) 2016-2023 Regents of the University of California, Santa Cruz
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# All rights reserved.
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#
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from openram.base.pin_layout import pin_layout
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from openram.base.vector import vector
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from openram.tech import drc
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from .graph_utils import snap_to_grid
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class graph_shape(pin_layout):
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"""
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This class inherits the pin_layout class to change some of its behavior for
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the graph router.
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"""
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def __init__(self, name, rect, layer_name_pp, inflated_from=None):
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pin_layout.__init__(self, name, rect, layer_name_pp)
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# Snap the shape to the grid here
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ll, ur = self.rect
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self.rect = [snap_to_grid(ll), snap_to_grid(ur)]
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self.inflated_from = inflated_from
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def get_inflated_from(self):
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"""
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Return `self` if `self.inflated_from` is None. Otherwise, return
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`self.inflated_from`.
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"""
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if self.inflated_from is None:
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return self
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return self.inflated_from
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def inflated_pin(self, spacing=None, multiple=0.5, extra_spacing=0, keep_link=False):
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""" Override the default inflated_pin behavior. """
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ll, ur = self.inflate(spacing, multiple)
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extra = vector([extra_spacing] * 2)
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newll = ll - extra
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newur = ur + extra
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inflated_area = (newll, newur)
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return graph_shape(self.name, inflated_area, self.layer, self if keep_link else None)
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def aligns(self, other):
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""" Return if the other shape aligns with this shape. """
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# Shapes must overlap to be able to align
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if not self.overlaps(other):
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return False
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ll, ur = self.rect
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oll, our = other.rect
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if ll.x == oll.x and ur.x == our.x:
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return True
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if ll.y == oll.y and ur.y == our.y:
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return True
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return False
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