File size: 13,969 Bytes
5154c4e | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 | from __future__ import annotations
import math
import re
from collections import defaultdict
from pathlib import Path
import cadquery as cq
OUTPUT_ROOT = Path(r"C:\Users\User\Desktop")
STEP_NAME = "cli_040_ap242_quality_out.step"
REPORT_NAME = "cli_040_quality_report.txt"
TOL = 0.08
PART_BBOXES = [
(-25.0, 25.0, -20.0, 20.0, 0.0, 20.0),
(35.0, 75.0, -17.5, 17.5, 0.0, 18.0),
(85.0, 115.0, -12.5, 12.5, 0.0, 16.0),
(121.0, 149.0, -11.0, 11.0, 0.0, 14.0),
(156.0, 180.0, -10.0, 10.0, 0.0, 12.0),
(187.0, 207.0, -8.0, 8.0, 0.0, 10.0),
]
ASSEMBLY_BBOX = (-25.0, 207.0, -20.0, 20.0, 0.0, 20.0)
ENTITY_RE = re.compile(r"^\s*#(\d+)\s*=\s*(.+)\s*$", re.DOTALL)
REF_RE = re.compile(r"#(\d+)")
NUMBER = r"[-+]?(?:\d+(?:\.\d*)?|\.\d+)(?:[Ee][-+]?\d+)?"
def split_part21(text: str) -> list[str]:
text = re.sub(r"/\*.*?\*/", "", text, flags=re.DOTALL)
statements: list[str] = []
current: list[str] = []
quoted = False
index = 0
while index < len(text):
char = text[index]
current.append(char)
if char == "'":
if quoted and index + 1 < len(text) and text[index + 1] == "'":
current.append(text[index + 1])
index += 1
else:
quoted = not quoted
elif char == ";" and not quoted:
statement = "".join(current[:-1]).strip()
if statement:
statements.append(statement)
current = []
index += 1
if quoted or "".join(current).strip():
raise ValueError("unterminated STEP statement")
return statements
def parse_part21(path: Path):
if not path.is_file() or path.stat().st_size < 4096:
raise ValueError("missing or implausibly small STEP file")
text = path.read_text(encoding="utf-8", errors="strict")
statements = split_part21(text)
entities: dict[int, str] = {}
header: list[str] = []
for statement in statements:
match = ENTITY_RE.match(statement)
if match:
entity_id = int(match.group(1))
if entity_id in entities:
raise ValueError("duplicate entity id")
entities[entity_id] = match.group(2).strip()
else:
header.append(statement)
if not entities:
raise ValueError("STEP has no entities")
return entities, header
def refs(body: str) -> list[int]:
return [int(value) for value in REF_RE.findall(body)]
def has_type(body: str, entity_type: str) -> bool:
return re.search(rf"(?<![A-Z0-9_]){re.escape(entity_type)}\s*\(", body.upper()) is not None
def check_schema(header: list[str]) -> bool:
schemas = [item.upper() for item in header if item.upper().startswith("FILE_SCHEMA")]
return (
len(schemas) == 1
and "AP242" in schemas[0]
and "AUTOMOTIVE_DESIGN" not in schemas[0]
and "CONFIG_CONTROL_DESIGN" not in schemas[0]
)
def check_millimeter_contexts(entities: dict[int, str]) -> bool:
contexts = {
entity_id: body
for entity_id, body in entities.items()
if has_type(body, "GEOMETRIC_REPRESENTATION_CONTEXT")
and has_type(body, "GLOBAL_UNIT_ASSIGNED_CONTEXT")
}
if not contexts:
return False
millimeter = re.compile(
r"SI_UNIT\s*\(\s*\.MILLI\.\s*,\s*\.METRE\.\s*\)", re.IGNORECASE
)
for context in contexts.values():
match = re.search(
r"GLOBAL_UNIT_ASSIGNED_CONTEXT\s*\(\s*\(([^)]*)\)\s*\)",
context,
re.IGNORECASE,
)
if not match:
return False
unit_ids = [int(value) for value in REF_RE.findall(match.group(1))]
length_units = [
entities.get(unit_id, "")
for unit_id in unit_ids
if has_type(entities.get(unit_id, ""), "LENGTH_UNIT")
]
if len(length_units) != 1 or not millimeter.search(length_units[0]):
return False
used_contexts = set()
for body in entities.values():
if has_type(body, "SHAPE_REPRESENTATION"):
linked = refs(body)
if not linked:
return False
used_contexts.add(linked[-1])
return bool(used_contexts) and used_contexts <= set(contexts)
def check_references(entities: dict[int, str]) -> bool:
defined = set(entities)
return all(set(refs(body)) <= defined for body in entities.values())
def load_solids(path: Path):
solids = cq.importers.importStep(str(path)).solids().vals()
if len(solids) != 6 or any(not solid.isValid() for solid in solids):
raise ValueError("expected six valid solids")
return solids
def bbox_tuple(solid):
box = solid.BoundingBox()
return (box.xmin, box.xmax, box.ymin, box.ymax, box.zmin, box.zmax)
def close_tuple(actual, expected, tolerance=TOL) -> bool:
return len(actual) == len(expected) and all(
abs(float(a) - float(e)) <= tolerance for a, e in zip(actual, expected)
)
def check_geometry(solids) -> bool:
unmatched = list(solids)
for expected in PART_BBOXES:
match = next(
(solid for solid in unmatched if close_tuple(bbox_tuple(solid), expected)),
None,
)
if match is None:
return False
dx = expected[1] - expected[0]
dy = expected[3] - expected[2]
dz = expected[5] - expected[4]
if abs(float(match.Volume()) - dx * dy * dz) > 1.0:
return False
if len(match.Faces()) != 6:
return False
unmatched.remove(match)
return not unmatched
def shape_product_map(entities: dict[int, str], solid_ids: set[int]) -> dict[int, int]:
advanced_to_solids: dict[int, set[int]] = {}
for entity_id, body in entities.items():
if has_type(body, "ADVANCED_BREP_SHAPE_REPRESENTATION"):
linked = set(refs(body)) & solid_ids
if linked:
advanced_to_solids[entity_id] = linked
shape_to_solids: dict[int, set[int]] = defaultdict(set)
for body in entities.values():
if not has_type(body, "SHAPE_REPRESENTATION_RELATIONSHIP"):
continue
linked = refs(body)
advanced = [value for value in linked if value in advanced_to_solids]
shapes = [
value
for value in linked
if value in entities
and has_type(entities[value], "SHAPE_REPRESENTATION")
and not has_type(entities[value], "SHAPE_REPRESENTATION_RELATIONSHIP")
and value not in advanced_to_solids
]
for advanced_id in advanced:
for shape_id in shapes:
shape_to_solids[shape_id].update(advanced_to_solids[advanced_id])
pds_to_product: dict[int, int] = {}
for entity_id, body in entities.items():
if has_type(body, "PRODUCT_DEFINITION_SHAPE"):
linked = refs(body)
product_defs = [
value
for value in linked
if value in entities and has_type(entities[value], "PRODUCT_DEFINITION")
]
if len(product_defs) == 1:
pds_to_product[entity_id] = product_defs[0]
result: dict[int, int] = {}
for body in entities.values():
if not has_type(body, "SHAPE_DEFINITION_REPRESENTATION"):
continue
linked = refs(body)
pds = [value for value in linked if value in pds_to_product]
shapes = [value for value in linked if value in shape_to_solids]
if len(pds) != 1 or len(shapes) != 1:
continue
product_def = pds_to_product[pds[0]]
for solid_id in shape_to_solids[shapes[0]]:
if solid_id in result and result[solid_id] != product_def:
raise ValueError("solid mapped to multiple product definitions")
result[solid_id] = product_def
return result
def check_assembly(entities: dict[int, str], solid_ids: set[int]) -> bool:
if len(solid_ids) != 6:
return False
solid_products = shape_product_map(entities, solid_ids)
if set(solid_products) != solid_ids or len(set(solid_products.values())) != 6:
return False
edges: set[tuple[int, int]] = set()
for body in entities.values():
if has_type(body, "NEXT_ASSEMBLY_USAGE_OCCURRENCE"):
linked = refs(body)
if len(linked) >= 2:
edges.add((linked[-2], linked[-1]))
part_products = set(solid_products.values())
children = {child for _, child in edges}
if not part_products <= children:
return False
if any(parent in part_products for parent, _ in edges):
return False
parents = {parent for parent, _ in edges}
roots = parents - children
adjacency: dict[int, set[int]] = defaultdict(set)
for parent, child in edges:
adjacency[parent].add(child)
def reachable(root: int) -> set[int]:
seen: set[int] = set()
stack = [root]
while stack:
current = stack.pop()
if current in seen:
continue
seen.add(current)
stack.extend(adjacency.get(current, ()))
return seen
return any(part_products <= reachable(root) for root in roots)
def color_entities(entities: dict[int, str]) -> dict[int, tuple[float, float, float]]:
pattern = re.compile(
rf"COLOUR_RGB\s*\(\s*'(?:''|[^'])*'\s*,\s*({NUMBER})\s*,\s*({NUMBER})\s*,\s*({NUMBER})\s*\)",
re.IGNORECASE,
)
result = {}
for entity_id, body in entities.items():
match = pattern.search(body)
if match:
color = tuple(float(match.group(index)) for index in range(1, 4))
if not all(math.isfinite(value) and 0.0 <= value <= 1.0 for value in color):
raise ValueError("invalid RGB value")
result[entity_id] = color
return result
def descendants(start: int, entities: dict[int, str]) -> set[int]:
seen: set[int] = set()
stack = [start]
while stack:
current = stack.pop()
if current in seen or current not in entities:
continue
seen.add(current)
stack.extend(refs(entities[current]))
return seen
def check_colors(entities: dict[int, str], solid_ids: set[int]) -> bool:
colors = color_entities(entities)
if len(colors) < 6:
return False
style_pattern = re.compile(
r"(?:CONTEXT_DEPENDENT_OVER_RIDING_)?STYLED_ITEM\s*\(\s*'(?:''|[^'])*'\s*,\s*\(([^)]*)\)\s*,\s*#(\d+)",
re.IGNORECASE,
)
target_colors: dict[int, set[tuple[float, float, float]]] = defaultdict(set)
for body in entities.values():
match = style_pattern.search(body)
if not match:
continue
style_ids = [int(value) for value in REF_RE.findall(match.group(1))]
target = int(match.group(2))
for style_id in style_ids:
for linked in descendants(style_id, entities):
if linked in colors:
target_colors[target].add(tuple(round(value, 5) for value in colors[linked]))
signatures: list[frozenset[tuple[float, float, float]]] = []
for solid_id in solid_ids:
geometry = descendants(solid_id, entities)
associated: set[tuple[float, float, float]] = set()
for target, linked_colors in target_colors.items():
if target in geometry:
associated.update(linked_colors)
if not associated:
return False
signatures.append(frozenset(associated))
return len(set(signatures)) == 6 and len(set().union(*signatures)) >= 6
def parse_bbox_lines(text: str, label: str) -> list[tuple[float, ...]]:
pattern = re.compile(
rf"(?im)^\s*{label}\s*[:=]\s*((?:{NUMBER})(?:\s*[,\s]\s*(?:{NUMBER})){{5}})\s*$"
)
rows = []
for match in pattern.finditer(text):
values = tuple(float(value) for value in re.findall(NUMBER, match.group(1)))
if len(values) == 6 and all(math.isfinite(value) for value in values):
rows.append(values)
return rows
def check_report(path: Path, solids) -> bool:
if not path.is_file() or not 0 < path.stat().st_size <= 100_000:
return False
text = path.read_text(encoding="utf-8", errors="strict")
if not re.search(r"(?im)^\s*(?:solid|part)[ _-]?count\s*[:=]\s*6\s*$", text):
return False
if not re.search(r"(?im)^\s*units?\s*[:=]\s*(?:millimet(?:er|re)s?|mm)\s*$", text):
return False
if not re.search(r"(?im)^\s*(?:step[ _-]?)?schema\s*[:=]\s*AP242\s*$", text):
return False
reported = parse_bbox_lines(text, r"part[_ -]?\d+(?:[_ -]?bbox)")
actual = [bbox_tuple(solid) for solid in solids]
if len(reported) != 6:
return False
unmatched = list(actual)
for row in reported:
match = next((box for box in unmatched if close_tuple(row, box, 0.1)), None)
if match is None:
return False
unmatched.remove(match)
if unmatched:
return False
assembly = parse_bbox_lines(text, r"assembly[_ -]?bbox")
return len(assembly) == 1 and close_tuple(assembly[0], ASSEMBLY_BBOX, 0.1)
def evaluate() -> bool:
step_path = OUTPUT_ROOT / STEP_NAME
report_path = OUTPUT_ROOT / REPORT_NAME
entities, header = parse_part21(step_path)
if (
not check_schema(header)
or not check_references(entities)
or not check_millimeter_contexts(entities)
):
return False
solid_ids = {
entity_id
for entity_id, body in entities.items()
if has_type(body, "MANIFOLD_SOLID_BREP")
}
if not check_assembly(entities, solid_ids) or not check_colors(entities, solid_ids):
return False
solids = load_solids(step_path)
return check_geometry(solids) and check_report(report_path, solids)
if __name__ == "__main__":
try:
print(True if evaluate() else False)
except Exception:
print(False)
|