Umut CANandClaude Opus 5
d17a26103f
Two verified blocking findings on pid_graph. `_point_segment_distance` put the centre of an arc larger than a semicircle (|bulge| > 1) on the wrong side of the chord: `copysign` discarded the sign of `radius - sagitta`, which is exactly what carries the centre across the chord past 180 degrees. A bulge-2 arc was tested as its own reflection, so a line ending on its true apex dangled and one ending on empty paper made a junction. The offset now keeps that sign and only takes the bulge's direction from the bulge. Foreign-block port inference tested line ends against the INSERT's `bounding_box`, which on both engines takes the ATTRIB text with it. A TAG lettered above a valve pushed the box past the body, so a line ending on the body's real edge on that side was *inside* the box and reported dangling. Both engines now report `geometry_bbox` for an INSERT - the drawn geometry only, ATTRIB/ATTDEF excluded, in WCS, omitted when the block draws nothing (ezdxf via `virtual_entities`, COM by carrying each definition member's box through the INSERT's origin, scale and rotation). The graph prefers it over `bounding_box`, counts an end as touching when it is within tolerance of the box or inside it, and when several foreign boxes hold the end picks the nearest insertion. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01FKFStjEFzpGyLq5bMpWxTd
502 lines
24 KiB
Python
502 lines
24 KiB
Python
"""pid_graph reads the drawing back: our symbols exactly, foreign ones with confidence."""
|
|
|
|
from __future__ import annotations
|
|
|
|
import math
|
|
|
|
import pytest
|
|
|
|
from engineering.pid.drawlines import draw_line
|
|
from engineering.pid.graph import build_graph
|
|
from engineering.pid.insert import place_symbol
|
|
|
|
pytestmark = pytest.mark.asyncio
|
|
|
|
|
|
async def _small_pid(backend):
|
|
pump = await place_symbol(backend, "centrifugal_pump", 100, 100, tag="P-101", desc="Feed pump")
|
|
hv = await place_symbol(backend, "gate", 160, 104, tag="HV-101", actuator="hand")
|
|
vessel = await place_symbol(backend, "vertical_vessel", 220, 120, tag="V-201")
|
|
fic = await place_symbol(
|
|
backend, "instrument", 160, 160, tag="FIC-101", type="dcs", location="primary"
|
|
)
|
|
l1 = await draw_line(
|
|
backend,
|
|
{"handle": pump["handle"], "port": "discharge"},
|
|
{"handle": hv["handle"], "port": "in"},
|
|
size="100",
|
|
service="P",
|
|
spec="CS1",
|
|
)
|
|
l2 = await draw_line(
|
|
backend,
|
|
{"handle": hv["handle"], "port": "out"},
|
|
{"handle": vessel["handle"], "port": "N3"},
|
|
line_number=l1["line_number"],
|
|
)
|
|
sig = await draw_line(
|
|
backend, {"handle": fic["handle"]}, {"x": 160, "y": 112}, line_class="electric"
|
|
)
|
|
return {"pump": pump, "hv": hv, "vessel": vessel, "fic": fic, "l1": l1, "l2": l2, "sig": sig}
|
|
|
|
|
|
async def test_tool_drawn_pid_is_read_back_exactly(backend):
|
|
ids = await _small_pid(backend)
|
|
graph = await build_graph(backend)
|
|
nodes = {n["id"]: n for n in graph["nodes"]}
|
|
assert set(nodes) == {
|
|
ids["pump"]["handle"],
|
|
ids["hv"]["handle"],
|
|
ids["vessel"]["handle"],
|
|
ids["fic"]["handle"],
|
|
}
|
|
assert nodes[ids["pump"]["handle"]]["kind"] == "equipment"
|
|
assert nodes[ids["pump"]["handle"]]["tag"] == "P-101"
|
|
assert nodes[ids["pump"]["handle"]]["description"] == "Feed pump"
|
|
assert nodes[ids["fic"]["handle"]]["kind"] == "instrument"
|
|
assert nodes[ids["fic"]["handle"]]["tag"] == "FIC-101"
|
|
assert nodes[ids["fic"]["handle"]]["tag_parsed"]["description"] == "Flow Indicating Controller"
|
|
assert all(n["source"] == "catalog" and n["confidence"] == 1.0 for n in graph["nodes"])
|
|
edges = {e["id"]: e for e in graph["edges"]}
|
|
assert set(edges) == {ids["l1"]["handle"], ids["l2"]["handle"], ids["sig"]["handle"]}
|
|
l1 = edges[ids["l1"]["handle"]]
|
|
assert l1["from"] == {"node": ids["pump"]["handle"], "port": "discharge"}
|
|
assert l1["to"] == {"node": ids["hv"]["handle"], "port": "in"}
|
|
assert l1["line_number"] == "100-P-1-CS1"
|
|
assert l1["number_source"] == "xdata" and l1["class_source"] == "xdata"
|
|
assert nodes[ids["hv"]["handle"]]["ports"]["in"]["edges"] == [ids["l1"]["handle"]]
|
|
sig = edges[ids["sig"]["handle"]]
|
|
assert sig["from"] == {"node": ids["fic"]["handle"], "port": "signal"}
|
|
assert sig["line_class"] == "electric"
|
|
assert len(graph["dangling"]) == 1 and graph["dangling"][0]["edge"] == ids["sig"]["handle"]
|
|
assert graph["stats"]["nodes_by_kind"] == {"equipment": 2, "instrument": 1, "valve": 1}
|
|
assert graph["stats"]["confidence_min"] == 1.0 and graph["stats"]["dangling"] == 1
|
|
assert graph["junctions"] == [] and graph["unclassified"] == []
|
|
|
|
|
|
async def test_a_nudged_symbol_makes_its_line_dangle_with_a_hint(backend):
|
|
ids = await _small_pid(backend)
|
|
await backend.entity_move(ids["hv"]["handle"], 0.0, 1.0)
|
|
graph = await build_graph(backend, tolerance=0.5)
|
|
dangling = {d["edge"]: d for d in graph["dangling"]}
|
|
assert ids["l1"]["handle"] in dangling and ids["l2"]["handle"] in dangling
|
|
hint = dangling[ids["l1"]["handle"]]["nearest"]
|
|
assert hint["node"] == ids["hv"]["handle"] and hint["port"] == "in"
|
|
assert hint["distance"] == pytest.approx(1.0)
|
|
assert await _no_dangling_after(backend, tolerance=1.5)
|
|
|
|
|
|
async def _no_dangling_after(backend, tolerance):
|
|
graph = await build_graph(backend, tolerance=tolerance)
|
|
return graph["stats"]["dangling"] == 1 # only the deliberately open signal line
|
|
|
|
|
|
async def test_branch_onto_a_line_becomes_a_junction(backend):
|
|
ids = await _small_pid(backend)
|
|
# l1 runs (100,106)->(100,111)->(151,111)->(151,104)->(156,104); (130,111) is on its
|
|
# second segment
|
|
branch = await draw_line(
|
|
backend, {"x": 130, "y": 111}, {"x": 130, "y": 60}, line_class="process_minor"
|
|
)
|
|
graph = await build_graph(backend)
|
|
edge = next(e for e in graph["edges"] if e["id"] == branch["handle"])
|
|
assert edge["from"] and "junction" in edge["from"]
|
|
junction = next(j for j in graph["junctions"] if j["id"] == edge["from"]["junction"])
|
|
assert (junction["x"], junction["y"]) == pytest.approx((130.0, 111.0))
|
|
assert set(junction["edges"]) == {branch["handle"], ids["l1"]["handle"]}
|
|
|
|
|
|
async def test_rotated_and_scaled_symbols_are_measured_not_assumed(backend):
|
|
await place_symbol(backend, "centrifugal_pump", 0, 0, rotation=90.0, scale=2.0, tag="P-1")
|
|
graph = await build_graph(backend)
|
|
node = graph["nodes"][0]
|
|
assert node["ports"]["discharge"]["x"] == pytest.approx(-12.0)
|
|
assert node["ports"]["discharge"]["direction_deg"] == pytest.approx(180.0)
|
|
assert node["rotation_deg"] == pytest.approx(90.0) and node["scale"] == pytest.approx(2.0)
|
|
|
|
|
|
async def test_foreign_blocks_classify_with_reduced_confidence_and_inferred_ports(backend):
|
|
blk = backend._doc.blocks.new(name="GATE_VALVE")
|
|
blk.add_lwpolyline([(-4, -2), (-4, 2), (0, 0)], close=True)
|
|
blk.add_lwpolyline([(4, -2), (4, 2), (0, 0)], close=True)
|
|
blk.add_attdef("TAG", insert=(0, 4), text="", dxfattribs={"height": 2.5})
|
|
logo = backend._doc.blocks.new(name="COMPANY_LOGO")
|
|
logo.add_circle((0, 0), 5)
|
|
await backend.block_insert("GATE_VALVE", 50, 50, attributes={"TAG": "HV-9"})
|
|
await backend.block_insert("COMPANY_LOGO", 300, 300)
|
|
await backend.entity_create_line(10, 50, 46, 50, layer="PROCESS-PIPING-MAIN")
|
|
graph = await build_graph(backend)
|
|
assert len(graph["nodes"]) == 1
|
|
node = graph["nodes"][0]
|
|
assert node["kind"] == "valve" and node["source"] == "heuristic" and node["confidence"] == 0.6
|
|
assert node["tag"] == "HV-9" and node["tag_source"] == "attribute"
|
|
port = next(iter(node["ports"].values()))
|
|
assert port["inferred"] is True and (port["x"], port["y"]) == pytest.approx((46.0, 50.0))
|
|
assert graph["stats"]["confidence_min"] == 0.6
|
|
edge = graph["edges"][0]
|
|
assert edge["line_class"] == "process_major" and edge["class_source"] == "layer"
|
|
assert graph["stats"]["entities_scanned"] >= 3
|
|
|
|
|
|
async def test_a_foreign_line_ending_on_the_body_behind_the_tag_text_attaches(backend):
|
|
"""The INSERT's ``bounding_box`` takes the ATTRIB with it, so the TAG
|
|
lettered above the valve pushed the box to x~60 and a line ending on the
|
|
body's real right edge (54,50) was *inside* the box — and dangled."""
|
|
blk = backend._doc.blocks.new(name="GATE_VALVE")
|
|
blk.add_lwpolyline([(-4, -2), (-4, 2), (0, 0)], close=True)
|
|
blk.add_lwpolyline([(4, -2), (4, 2), (0, 0)], close=True)
|
|
blk.add_attdef("TAG", insert=(0, 4), text="", dxfattribs={"height": 2.5})
|
|
valve = (await backend.block_insert("GATE_VALVE", 50, 50, attributes={"TAG": "HV-9"})).handle
|
|
props = (await backend.entity_get(valve)).properties
|
|
assert props["geometry_bbox"]["min"] == pytest.approx([46.0, 48.0])
|
|
assert props["geometry_bbox"]["max"] == pytest.approx([54.0, 52.0])
|
|
assert props["bounding_box"]["max"][0] > 54.0 # the attribute-inclusive box
|
|
line = (await backend.entity_create_line(54, 50, 90, 50, layer="PROCESS-PIPING-MAIN")).handle
|
|
graph = await build_graph(backend)
|
|
edge = next(e for e in graph["edges"] if e["id"] == line)
|
|
assert edge["from"] == {"node": valve, "port": "p1"}
|
|
node = next(n for n in graph["nodes"] if n["id"] == valve)
|
|
port = node["ports"]["p1"]
|
|
assert port["inferred"] is True and (port["x"], port["y"]) == pytest.approx((54.0, 50.0))
|
|
assert (line, "from") not in {(d["edge"], d["end"]) for d in graph["dangling"]}
|
|
|
|
|
|
async def test_a_foreign_vessel_takes_lines_on_every_edge_regardless_of_where_its_tag_sits(
|
|
backend,
|
|
):
|
|
blk = backend._doc.blocks.new(name="VESSEL_V")
|
|
blk.add_lwpolyline([(-5, -10), (5, -10), (5, 10), (-5, 10)], close=True)
|
|
blk.add_attdef("TAG", insert=(0, 13), text="", dxfattribs={"height": 2.5})
|
|
vessel = (await backend.block_insert("VESSEL_V", 100, 100, attributes={"TAG": "V-1"})).handle
|
|
props = (await backend.entity_get(vessel)).properties
|
|
assert props["geometry_bbox"]["min"] == pytest.approx([95.0, 90.0])
|
|
assert props["geometry_bbox"]["max"] == pytest.approx([105.0, 110.0])
|
|
top = (await backend.entity_create_line(100, 140, 100, 110, layer="PROCESS-PIPING-MAIN")).handle
|
|
side = (
|
|
await backend.entity_create_line(140, 100, 105, 100, layer="PROCESS-PIPING-MAIN")
|
|
).handle
|
|
graph = await build_graph(backend)
|
|
edges = {e["id"]: e for e in graph["edges"]}
|
|
assert edges[top]["to"]["node"] == vessel and edges[side]["to"]["node"] == vessel
|
|
node = next(n for n in graph["nodes"] if n["id"] == vessel)
|
|
assert node["kind"] == "equipment" and node["tag"] == "V-1"
|
|
ends = {(round(p["x"], 6), round(p["y"], 6)) for p in node["ports"].values()}
|
|
assert ends == {(100.0, 110.0), (105.0, 100.0)}
|
|
assert {(d["edge"], d["end"]) for d in graph["dangling"]} == {(top, "from"), (side, "from")}
|
|
|
|
|
|
async def test_a_line_drawn_into_a_foreign_body_attaches_to_the_nearest_block(backend):
|
|
"""An end strictly inside the drawn symbol is a connection, and when two
|
|
foreign boxes hold it the one inserted nearest wins."""
|
|
big = backend._doc.blocks.new(name="VESSEL_BIG")
|
|
big.add_lwpolyline([(-30, -30), (30, -30), (30, 30), (-30, 30)], close=True)
|
|
small = backend._doc.blocks.new(name="GATE_VALVE")
|
|
small.add_lwpolyline([(-4, -2), (4, -2), (4, 2), (-4, 2)], close=True)
|
|
vessel = (await backend.block_insert("VESSEL_BIG", 0, 0, attributes={"TAG": "V-2"})).handle
|
|
valve = (await backend.block_insert("GATE_VALVE", 20, 0, attributes={"TAG": "HV-2"})).handle
|
|
line = (await backend.entity_create_line(60, 0, 22, 0, layer="PROCESS-PIPING-MAIN")).handle
|
|
graph = await build_graph(backend)
|
|
edge = next(e for e in graph["edges"] if e["id"] == line)
|
|
assert edge["to"]["node"] == valve
|
|
assert next(n for n in graph["nodes"] if n["id"] == vessel)["ports"] == {}
|
|
|
|
|
|
async def test_include_foreign_false_ignores_untagged_blocks(backend):
|
|
blk = backend._doc.blocks.new(name="GATE_VALVE")
|
|
blk.add_line((0, 0), (1, 0))
|
|
await backend.block_insert("GATE_VALVE", 50, 50)
|
|
graph = await build_graph(backend, include_foreign=False)
|
|
assert graph["nodes"] == [] and graph["edges"] == []
|
|
|
|
|
|
async def test_line_number_and_tags_from_nearby_text(backend):
|
|
await backend.entity_create_line(0, 0, 100, 0, layer="PROCESS-PIPING-MAIN")
|
|
await backend.entity_create_text('6"-P-1234-CS1', 40, 2, 2.5, layer="PROCESS-LINE-TEXT")
|
|
graph = await build_graph(backend)
|
|
edge = graph["edges"][0]
|
|
assert edge["line_number"] == '6"-P-1234-CS1' and edge["number_source"] == "label"
|
|
|
|
|
|
async def test_scope_all_walks_every_layout_and_restores_the_current_one(backend):
|
|
await place_symbol(backend, "gate", 0, 0, tag="HV-1")
|
|
await backend.layout_create("SHEET-2")
|
|
await backend.layout_set_current("SHEET-2")
|
|
await place_symbol(backend, "gate", 0, 0, tag="HV-2")
|
|
await backend.layout_set_current("Model")
|
|
graph = await build_graph(backend, scope="all")
|
|
assert sorted(n["tag"] for n in graph["nodes"]) == ["HV-1", "HV-2"]
|
|
assert sorted(n["space"] for n in graph["nodes"]) == ["Model", "SHEET-2"]
|
|
assert (await backend.layout_list())["current"] == "Model"
|
|
|
|
|
|
async def test_offpage_links_pair_by_link_id(backend):
|
|
out = await place_symbol(backend, "offpage", 0, 0, tag="TO 002", link="L-17", direction="out")
|
|
inn = await place_symbol(
|
|
backend, "offpage", 100, 0, tag="FROM 001", link="L-17", direction="in"
|
|
)
|
|
graph = await build_graph(backend)
|
|
assert graph["offpage_links"] == [
|
|
{"link": "L-17", "nodes": sorted([out["handle"], inn["handle"]])}
|
|
]
|
|
|
|
|
|
async def test_geometry_is_optional(backend):
|
|
await _small_pid(backend)
|
|
lean = await build_graph(backend)
|
|
assert "vertices" not in lean["edges"][0]
|
|
full = await build_graph(backend, include_geometry=True)
|
|
assert len(full["edges"][0]["vertices"]) >= 2
|
|
|
|
|
|
async def test_a_line_ending_on_a_discarded_foreign_line_dangles(backend):
|
|
"""A foreign line is an edge only when an end touches a node (spec §9.2 4c).
|
|
|
|
Junctions used to be resolved before that decision, so a P&ID line ending
|
|
on a foreign line that was then dropped kept ``{"junction": "J1"}`` while
|
|
``junctions`` was empty and ``stats.dangling`` was one short — an id
|
|
Task 15's line list would dereference into nothing."""
|
|
main = (await backend.entity_create_line(0, 0, 50, 0, layer="PROCESS-PIPING-MAIN")).handle
|
|
await backend.entity_create_line(50, -20, 50, 20, layer="0")
|
|
graph = await build_graph(backend)
|
|
edge = graph["edges"][0]
|
|
assert edge["id"] == main and edge["from"] is None and edge["to"] is None
|
|
assert graph["junctions"] == []
|
|
assert {(d["edge"], d["end"]) for d in graph["dangling"]} == {(main, "from"), (main, "to")}
|
|
assert graph["stats"]["dangling"] == 2
|
|
|
|
|
|
async def test_a_foreign_line_ending_on_another_discarded_foreign_line_dangles(backend):
|
|
blk = backend._doc.blocks.new(name="GATE_VALVE")
|
|
blk.add_lwpolyline([(-4, -2), (-4, 2), (0, 0)], close=True)
|
|
blk.add_lwpolyline([(4, -2), (4, 2), (0, 0)], close=True)
|
|
valve = (await backend.block_insert("GATE_VALVE", 50, 50)).handle
|
|
kept = (await backend.entity_create_line(46, 50, 10, 50, layer="0")).handle # on the bbox
|
|
await backend.entity_create_line(10, 50, 10, 0, layer="0") # touches nothing: not an edge
|
|
graph = await build_graph(backend)
|
|
assert [e["id"] for e in graph["edges"]] == [kept]
|
|
edge = graph["edges"][0]
|
|
assert edge["from"] == {"node": valve, "port": "p1"} and edge["to"] is None
|
|
assert graph["junctions"] == []
|
|
assert [(d["edge"], d["end"]) for d in graph["dangling"]] == [(kept, "to")]
|
|
assert graph["stats"]["dangling"] == 1
|
|
|
|
|
|
async def test_edge_length_is_the_engines_measurement_not_a_chord_walk(backend):
|
|
"""A curved crossing "jump" is an arc in the drawing; the chord walk over
|
|
its vertices was 5.7 units short and said nothing about it. The engine
|
|
measures the real geometry, and a line ending *on the arc* is a junction."""
|
|
msp = backend._doc.modelspace()
|
|
pipe = msp.add_lwpolyline(
|
|
[(-20, 0, 0), (0, 0, 1), (10, 0, 0), (30, 0, 0)],
|
|
format="xyb",
|
|
dxfattribs={"layer": "PROCESS-PIPING-MAIN"},
|
|
)
|
|
pipe = pipe.dxf.handle
|
|
measured = (await backend.entity_get(pipe)).properties["length"]
|
|
assert measured == pytest.approx(20 + 5 * math.pi + 20)
|
|
# bulge 1 from (0,0) to (10,0) bows to -y: centre (5,0), radius 5 → apex (5,-5)
|
|
branch = await backend.entity_create_line(5, -5, 5, -30, layer="PROCESS-PIPING-SECONDARY")
|
|
branch = branch.handle
|
|
graph = await build_graph(backend)
|
|
edges = {e["id"]: e for e in graph["edges"]}
|
|
assert edges[pipe]["length"] == pytest.approx(measured)
|
|
assert "length_approximate" not in edges[pipe]
|
|
assert edges[branch]["from"] and "junction" in edges[branch]["from"]
|
|
junction = graph["junctions"][0]
|
|
assert (junction["x"], junction["y"]) == pytest.approx((5.0, -5.0))
|
|
assert set(junction["edges"]) == {pipe, branch}
|
|
full = await build_graph(backend, include_geometry=True)
|
|
assert {e["id"]: e for e in full["edges"]}[pipe]["bulges"] == [0.0, 1.0, 0.0, 0.0]
|
|
|
|
|
|
def test_point_to_arc_distance_follows_the_bulge():
|
|
from engineering.pid.graph import _point_segment_distance
|
|
|
|
a, b = (0.0, 0.0), (10.0, 0.0)
|
|
assert _point_segment_distance((5, -5), a, b, 1.0) == pytest.approx(0.0) # CCW apex
|
|
assert _point_segment_distance((5, 5), a, b, -1.0) == pytest.approx(0.0) # CW apex
|
|
assert _point_segment_distance((5, 5), a, b, 1.0) == pytest.approx(math.hypot(5, 5))
|
|
assert _point_segment_distance((5, -2.5), a, b, 0.5) == pytest.approx(0.0) # sagitta
|
|
assert _point_segment_distance((5, 2.5), a, b, 0.5) == pytest.approx(5.0)
|
|
assert _point_segment_distance((5, 0), a, b, 0.0) == pytest.approx(0.0) # straight
|
|
|
|
|
|
def _arc_distance_sampled(p, a, b, bulge, samples=20000):
|
|
"""Nearest distance from ``p`` to the bulge arc, measured on ezdxf's own
|
|
arc (centre, angles, radius) by dense sampling — an independent answer."""
|
|
from ezdxf.math import Vec2, bulge_to_arc
|
|
|
|
centre, start, end, radius = bulge_to_arc(Vec2(a), Vec2(b), bulge)
|
|
if end < start:
|
|
end += 2.0 * math.pi
|
|
return min(
|
|
math.dist(
|
|
p,
|
|
(
|
|
centre.x + radius * math.cos(start + (end - start) * i / samples),
|
|
centre.y + radius * math.sin(start + (end - start) * i / samples),
|
|
),
|
|
)
|
|
for i in range(samples + 1)
|
|
)
|
|
|
|
|
|
def test_point_to_arc_distance_past_a_semicircle_keeps_the_centre_on_the_arcs_side():
|
|
"""For |bulge| > 1 the centre crosses the chord (``radius - sagitta`` goes
|
|
negative). ``copysign`` threw that sign away, so a bulge-2 arc was tested
|
|
as its own reflection: the apex read as far away and empty paper as on it."""
|
|
from ezdxf.math import bulge_center
|
|
|
|
from engineering.pid.graph import _point_segment_distance
|
|
|
|
a, b = (0.0, 0.0), (10.0, 0.0)
|
|
assert tuple(bulge_center(a, b, 2.0)) == pytest.approx((5.0, -3.75))
|
|
assert tuple(bulge_center(a, b, -2.0)) == pytest.approx((5.0, 3.75))
|
|
# centre (5,-3.75), r 6.25 -> apex (5,-10); the mirror image is (5,10)
|
|
assert _point_segment_distance((5, -10), a, b, 2.0) == pytest.approx(0.0)
|
|
assert _point_segment_distance((5, 10), a, b, 2.0) == pytest.approx(
|
|
_arc_distance_sampled((5, 10), a, b, 2.0), abs=1e-6
|
|
)
|
|
assert _point_segment_distance((5, 10), a, b, 2.0) == pytest.approx(math.hypot(5, 10))
|
|
assert _point_segment_distance((5, 10), a, b, -2.0) == pytest.approx(0.0)
|
|
assert _point_segment_distance((5, -10), a, b, -2.0) == pytest.approx(
|
|
_arc_distance_sampled((5, -10), a, b, -2.0), abs=1e-6
|
|
)
|
|
assert _point_segment_distance((5, -10), a, b, -2.0) == pytest.approx(math.hypot(5, 10))
|
|
|
|
|
|
async def test_a_line_ending_on_the_apex_of_an_arc_past_a_semicircle_is_a_junction(backend):
|
|
msp = backend._doc.modelspace()
|
|
pipe = msp.add_lwpolyline(
|
|
[(-20, 0, 0), (0, 0, 2), (10, 0, 0), (30, 0, 0)],
|
|
format="xyb",
|
|
dxfattribs={"layer": "PROCESS-PIPING-MAIN"},
|
|
).dxf.handle
|
|
on_arc = (
|
|
await backend.entity_create_line(5, -10, 5, -30, layer="PROCESS-PIPING-SECONDARY")
|
|
).handle
|
|
on_paper = (
|
|
await backend.entity_create_line(5, 10, 5, 30, layer="PROCESS-PIPING-SECONDARY")
|
|
).handle
|
|
graph = await build_graph(backend)
|
|
edges = {e["id"]: e for e in graph["edges"]}
|
|
assert edges[on_arc]["from"] and "junction" in edges[on_arc]["from"]
|
|
assert edges[on_paper]["from"] is None
|
|
assert [j["id"] for j in graph["junctions"]] == [edges[on_arc]["from"]["junction"]]
|
|
junction = graph["junctions"][0]
|
|
assert (junction["x"], junction["y"]) == pytest.approx((5.0, -10.0))
|
|
assert set(junction["edges"]) == {pipe, on_arc}
|
|
dangling = {(d["edge"], d["end"]) for d in graph["dangling"]}
|
|
assert (on_paper, "from") in dangling and (on_arc, "from") not in dangling
|
|
|
|
|
|
async def test_a_mirrored_arc_is_tested_on_the_side_the_drawing_holds(backend):
|
|
"""The bulge is signed in the polyline's own frame, and ``entity_mirror``
|
|
leaves that frame a reflection (extrusion -Z). Handing the stored sign
|
|
out next to WCS ``points`` described the arc's mirror image: a line ending
|
|
on the true apex dangled and one ending on empty paper made a junction,
|
|
with ``length`` (frame-invariant) saying nothing about it."""
|
|
msp = backend._doc.modelspace()
|
|
pipe = msp.add_lwpolyline(
|
|
[(-20, 0, 0), (0, 0, 1), (10, 0, 0), (30, 0, 0)],
|
|
format="xyb",
|
|
dxfattribs={"layer": "PROCESS-PIPING-MAIN"},
|
|
)
|
|
# Mirror across the X axis: the arc that bowed to -y now bows to +y, which
|
|
# the engine's own bounding box confirms.
|
|
pipe = (await backend.entity_mirror(pipe.dxf.handle, 0, 0, 1, 0, delete_original=True)).handle
|
|
info = (await backend.entity_get(pipe)).properties
|
|
assert info["bounding_box"]["max"][1] == pytest.approx(5.0)
|
|
assert info["bounding_box"]["min"][1] == pytest.approx(0.0)
|
|
assert info["bulges"] == [0.0, -1.0, 0.0, 0.0]
|
|
on_arc = (
|
|
await backend.entity_create_line(5, 5, 5, 30, layer="PROCESS-PIPING-SECONDARY")
|
|
).handle
|
|
on_paper = (
|
|
await backend.entity_create_line(5, -5, 5, -30, layer="PROCESS-PIPING-SECONDARY")
|
|
).handle
|
|
graph = await build_graph(backend)
|
|
edges = {e["id"]: e for e in graph["edges"]}
|
|
assert edges[pipe]["length"] == pytest.approx(20 + 5 * math.pi + 20)
|
|
assert edges[on_arc]["from"] and "junction" in edges[on_arc]["from"]
|
|
assert edges[on_paper]["from"] is None
|
|
assert [j["id"] for j in graph["junctions"]] == [edges[on_arc]["from"]["junction"]]
|
|
junction = graph["junctions"][0]
|
|
assert (junction["x"], junction["y"]) == pytest.approx((5.0, 5.0))
|
|
assert set(junction["edges"]) == {pipe, on_arc}
|
|
assert {(d["edge"], d["end"]) for d in graph["dangling"]} >= {(on_paper, "from")}
|
|
assert (on_arc, "from") not in {(d["edge"], d["end"]) for d in graph["dangling"]}
|
|
|
|
|
|
def test_com_polyline_bulges_follow_points_into_wcs():
|
|
"""ActiveX ``GetBulge`` answers in the same OCS as ``Coordinates``. Once
|
|
the points are reflected into WCS the arc's sense reverses with them, so
|
|
the bulge sign flips — the same polyline as the test above, as AutoCAD
|
|
would hand it over after MIRROR."""
|
|
from types import SimpleNamespace
|
|
|
|
from backends.com_backend import _entity_info
|
|
from engineering.pid.graph import _point_segment_distance
|
|
|
|
ent = SimpleNamespace(
|
|
ObjectName="AcDbPolyline",
|
|
Coordinates=(20.0, 0.0, 0.0, 0.0, -10.0, 0.0, -30.0, 0.0),
|
|
Normal=(0.0, 0.0, -1.0),
|
|
Elevation=0.0,
|
|
Handle="2F",
|
|
Layer="PROCESS-PIPING-MAIN",
|
|
Color=256,
|
|
Linetype="ByLayer",
|
|
Visible=True,
|
|
Closed=False,
|
|
Length=40 + 5 * math.pi,
|
|
GetBoundingBox=lambda: ((-20.0, 0.0, 0.0), (30.0, 5.0, 0.0)),
|
|
GetBulge=lambda i: [0.0, 1.0, 0.0, 0.0][i],
|
|
)
|
|
props = _entity_info(ent).properties
|
|
assert props["points"] == [[-20.0, 0.0], [0.0, 0.0], [10.0, 0.0], [30.0, 0.0]]
|
|
assert props["bulges"] == [0.0, -1.0, 0.0, 0.0]
|
|
a, b, bulge = props["points"][1], props["points"][2], props["bulges"][1]
|
|
assert _point_segment_distance((5.0, 5.0), a, b, bulge) == pytest.approx(0.0)
|
|
assert _point_segment_distance((5.0, -5.0), a, b, bulge) == pytest.approx(math.hypot(5, 5))
|
|
|
|
|
|
def test_com_polyline_bulges_are_read_only_when_length_says_an_arc_exists():
|
|
"""The COM engine pays one round trip per vertex for GetBulge, so it asks
|
|
only when ActiveX ``Length`` exceeds the chord walk — an arc is always
|
|
longer than its chord, so equality proves every bulge is zero."""
|
|
from types import SimpleNamespace
|
|
|
|
from backends.com_backend import _entity_info
|
|
|
|
def fake(coords, length, bulges):
|
|
calls = []
|
|
|
|
def get_bulge(i):
|
|
calls.append(i)
|
|
return bulges[i]
|
|
|
|
ent = SimpleNamespace(
|
|
ObjectName="AcDbPolyline",
|
|
Coordinates=coords,
|
|
Normal=(0.0, 0.0, 1.0),
|
|
Elevation=0.0,
|
|
Handle="2F",
|
|
Layer="0",
|
|
Color=256,
|
|
Linetype="ByLayer",
|
|
Visible=True,
|
|
Closed=False,
|
|
Length=length,
|
|
GetBoundingBox=lambda: ((0.0, 0.0, 0.0), (1.0, 1.0, 0.0)),
|
|
GetBulge=get_bulge,
|
|
)
|
|
return ent, calls
|
|
|
|
straight, calls = fake((0.0, 0.0, 10.0, 0.0, 10.0, 10.0), 20.0, [0.0, 0.0, 0.0])
|
|
assert _entity_info(straight).properties["bulges"] == [0.0, 0.0, 0.0]
|
|
assert calls == []
|
|
curved, calls = fake((0.0, 0.0, 10.0, 0.0, 10.0, 10.0), 10 + 5 * math.pi, [0.0, 1.0, 0.0])
|
|
assert _entity_info(curved).properties["bulges"] == [0.0, 1.0, 0.0]
|
|
assert calls == [0, 1, 2]
|