ykcheungab
73 lines
2.3 KiB
Python
73 lines
2.3 KiB
Python
"""Shared 2D/3D flow sampling and domain-mask rules."""
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from __future__ import annotations
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import numpy as np
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import pytest
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from orisys_app_shared.scene3d.contracts import ThreeDError
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from orisys_app_shared.scene3d.visual_policy import (
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VisualPolicy,
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build_domain_mask,
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paint_domain_background,
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select_flow_samples,
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)
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def test_build_domain_mask_rejects_shape_mismatch() -> None:
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geo = np.ones((4, 5), dtype=bool)
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with pytest.raises(ThreeDError):
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build_domain_mask(geo, shape_hw=(3, 5))
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def test_build_domain_mask_intersects_roi() -> None:
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geo = np.ones((3, 3), dtype=bool)
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roi = np.zeros((3, 3), dtype=bool)
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roi[1, 1] = True
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mask, diags = build_domain_mask(geo, roi)
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assert mask is not None
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assert bool(mask[1, 1]) and not bool(mask[0, 0])
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assert diags == ()
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def test_select_flow_samples_uses_shared_grid_and_mask() -> None:
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h, w = 40, 40
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flow = np.zeros((h, w, 2), dtype=np.float64)
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flow[15, 15] = (0.5, 0.0) # |2*flow| = 1.0
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mask = np.ones((h, w), dtype=bool)
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mask[:, :5] = False
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policy = VisualPolicy(flow_on_px=0.4, flow_grid_spacing=10, flow_edge_margin=0)
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samples = select_flow_samples(flow, mask, policy)
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assert samples.rows.size >= 1
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assert all(c >= 5 for c in samples.cols.tolist())
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pairs = set(zip(samples.rows.tolist(), samples.cols.tolist()))
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assert (15, 15) in pairs
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def test_select_flow_samples_hysteresis_keeps_weaker_motion() -> None:
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h, w = 30, 30
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flow = np.zeros((h, w, 2), dtype=np.float64)
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# |2*flow| = 0.7: below on (0.8) but above off (0.5)
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flow[15, 15] = (0.35, 0.0)
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policy = VisualPolicy(
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flow_on_px=0.8,
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flow_off_px=0.5,
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flow_grid_spacing=10,
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flow_edge_margin=0,
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)
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previously = np.zeros((h, w), dtype=bool)
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previously[15, 15] = True
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off = select_flow_samples(flow, None, policy, previously_on=None)
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on = select_flow_samples(flow, None, policy, previously_on=previously)
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assert off.rows.size == 0
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assert on.rows.size == 1
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def test_paint_domain_background_colours() -> None:
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mask = np.zeros((4, 4), dtype=bool)
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mask[1:3, 1:3] = True
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canvas = paint_domain_background(
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(4, 4), mask, island_bgr=(10, 20, 30), exterior_bgr=(1, 2, 3)
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)
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assert tuple(canvas[0, 0]) == (1, 2, 3)
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assert tuple(canvas[1, 1]) == (10, 20, 30)
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