mirror of https://github.com/VLSIDA/OpenRAM.git
45 lines
1.3 KiB
Python
45 lines
1.3 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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"""
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Utility functions for navigation router.
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"""
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def is_probe_blocked(p1, p2, blockages):
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"""
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Return if a probe sent from p1 to p2 encounters a blockage.
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The probe must be sent vertically or horizontally.
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This method assumes that blockages are rectangular.
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"""
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# Check if any blockage blocks this probe
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for blockage in blockages:
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ll, ur = blockage.rect
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right_x = ur[0]
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upper_y = ur[1]
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left_x = ll[0]
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lower_y = ll[1]
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# Check if blocked vertically
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if is_between(left_x, right_x, p1.x) and (is_between(p1.y, p2.y, upper_y) or is_between(p1.y, p2.y, lower_y)):
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return True
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# Check if blocked horizontally
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if is_between(upper_y, lower_y, p1.y) and (is_between(p1.x, p2.x, left_x) or is_between(p1.x, p2.x, right_x)):
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return True
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return False
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def is_in_region(point, region):
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""""""
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if is_between(region[0].x, region[1].x, point.x) and is_between(region[0].y, region[1].y, point.y):
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return True
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return False
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def is_between(a, b, mid):
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""" Return if 'mid' is between 'a' and 'b'. """
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return (a < mid and mid < b) or (b < mid and mid < a)
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