rsp2k
a6aa1991a1
The router began as a port of FreeRouting and has grown its own engine (negotiated congestion, tree nets, exact checks, axis escapes), and 'freeroute' was one letter from the project it no longer follows. The package, module and command are now rpmroute; the freeroute command stays as an alias, and the RPMROUTE / RPMROUTE_ORACLE_JAVA variables fall back to the old FREEROUTE names. Version 2026.10.07. Routing is unchanged: a PCBench board routes to a byte-identical session either way.
62 lines
2.0 KiB
Python
62 lines
2.0 KiB
Python
"""Tests for directions.
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Oracles hand-derived from ``geometry/planar/{Direction,IntDirection}.java``.
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"""
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from __future__ import annotations
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from rpmroute.geometry import Direction, IntDirection, IntPoint, IntVector, Side
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def test_normalized_direction_reduces_by_gcd():
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d = IntVector(2, 4).to_normalized_direction()
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assert isinstance(d, IntDirection)
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assert (d.x, d.y) == (1, 2)
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def test_normalized_direction_beyond_java_int():
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# gcd reduction stays exact for coordinates far past Java's int range.
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d = IntVector(6 * 10**12, 9 * 10**12).to_normalized_direction()
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assert (d.x, d.y) == (2, 3)
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def test_turn_45_degree_cycles():
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right = IntDirection(1, 0)
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assert (right.turn_45_degree(1).x, right.turn_45_degree(1).y) == (1, 1)
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assert (right.turn_45_degree(2).x, right.turn_45_degree(2).y) == (0, 1)
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assert (right.turn_45_degree(4).x, right.turn_45_degree(4).y) == (-1, 0)
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assert (right.turn_45_degree(8).x, right.turn_45_degree(8).y) == (1, 0)
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def test_opposite():
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o = IntDirection(1, 2).opposite()
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assert (o.x, o.y) == (-1, -2)
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def test_direction_equals_ignores_magnitude_not_sign():
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a = IntDirection(1, 1)
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assert a.equals(IntDirection(3, 3)) # same ray
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assert not a.equals(IntDirection(-1, -1)) # opposite ray
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assert not a.equals(IntDirection(1, 0))
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def test_from_points_returns_none_for_equal():
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assert Direction.from_points(IntPoint(1, 1), IntPoint(1, 1)) is None
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d = Direction.from_points(IntPoint(0, 0), IntPoint(4, 4))
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assert (d.x, d.y) == (1, 1)
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def test_compare_to_angular_order():
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right = IntDirection(1, 0)
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up = IntDirection(0, 1)
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down = IntDirection(0, -1)
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# angle(right)=0, angle(up)=90, angle(down)=270
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assert right.compare_to(up) == -1
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assert up.compare_to(right) == 1
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assert up.compare_to(down) == -1
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assert right.compare_to(IntDirection(2, 0)) == 0
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def test_side_of_direction():
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assert IntDirection(0, 1).side_of(IntDirection(1, 0)) == Side.ON_THE_LEFT
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