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import json
import math
import os
import re
import subprocess
import tempfile
import textwrap
from dataclasses import dataclass
from pathlib import Path
TARGET = Path(os.environ.get("ENGIWORLD_EVAL_TARGET", "/home/user/Desktop"))
NC_PATH = TARGET / "task-01.nc"
FCSTD_PATH = TARGET / "task-01.FCStd"
TOL = 1e-3
WORD_RE = re.compile(
r"([A-Z])\s*([+-]?(?:\d+(?:\.\d*)?|\.\d+)(?:E[+-]?\d+)?)",
re.IGNORECASE,
)
NATIVE_MARKER = "TASK_C01_NATIVE="
@dataclass(frozen=True)
class Move:
block: int
motion: int
start_x: float | None
start_y: float | None
start_z: float | None
end_x: float | None
end_y: float | None
end_z: float | None
feed: float | None
i: float | None
j: float | None
@property
def xy_distance(self) -> float:
if None in (self.start_x, self.start_y, self.end_x, self.end_y):
return 0.0
arc = self.arc_geometry
if arc is not None:
_center_x, _center_y, radius, sweep = arc
return radius * sweep
return math.hypot(self.end_x - self.start_x, self.end_y - self.start_y)
@property
def arc_geometry(self) -> tuple[float, float, float, float] | None:
if self.motion not in (2, 3) or None in (self.start_x, self.start_y, self.end_x, self.end_y):
return None
i_offset = 0.0 if self.i is None else self.i
j_offset = 0.0 if self.j is None else self.j
center_x = float(self.start_x) + i_offset
center_y = float(self.start_y) + j_offset
radius = math.hypot(i_offset, j_offset)
if radius <= TOL:
return None
start_angle = math.atan2(float(self.start_y) - center_y, float(self.start_x) - center_x)
end_angle = math.atan2(float(self.end_y) - center_y, float(self.end_x) - center_x)
sweep = (start_angle - end_angle) % math.tau if self.motion == 2 else (end_angle - start_angle) % math.tau
if sweep <= 1e-9:
sweep = math.tau
return center_x, center_y, radius, sweep
def close(a: float | None, b: float, tol: float = TOL) -> bool:
return a is not None and abs(a - b) <= tol
def point_segment_distance(
point: tuple[float, float],
start: tuple[float, float],
end: tuple[float, float],
) -> float:
dx = end[0] - start[0]
dy = end[1] - start[1]
length_squared = dx * dx + dy * dy
if length_squared <= TOL * TOL:
return math.dist(point, start)
projection = ((point[0] - start[0]) * dx + (point[1] - start[1]) * dy) / length_squared
projection = max(0.0, min(1.0, projection))
closest = (start[0] + projection * dx, start[1] + projection * dy)
return math.dist(point, closest)
def point_move_distance(point: tuple[float, float], move: Move) -> float:
if None in (move.start_x, move.start_y, move.end_x, move.end_y):
return math.inf
arc = move.arc_geometry
if arc is None:
return point_segment_distance(
point,
(float(move.start_x), float(move.start_y)),
(float(move.end_x), float(move.end_y)),
)
center_x, center_y, radius, sweep = arc
start_angle = math.atan2(float(move.start_y) - center_y, float(move.start_x) - center_x)
point_angle = math.atan2(point[1] - center_y, point[0] - center_x)
directed = (start_angle - point_angle) % math.tau if move.motion == 2 else (point_angle - start_angle) % math.tau
if directed <= sweep + 1e-9:
return abs(math.hypot(point[0] - center_x, point[1] - center_y) - radius)
return min(
math.dist(point, (float(move.start_x), float(move.start_y))),
math.dist(point, (float(move.end_x), float(move.end_y))),
)
def strip_comments(text: str) -> str:
output: list[str] = []
depth = 0
for char in text:
if char == "\n":
depth = 0
output.append(char)
elif depth:
if char == "(":
depth += 1
elif char == ")":
depth -= 1
elif char == "(":
depth = 1
elif char == ";":
depth = 1
else:
output.append(char)
return "".join(output)
def words_for_line(line: str) -> list[tuple[str, float]] | None:
cleaned = line.strip().upper().replace("%", "")
if not cleaned:
return []
words: list[tuple[str, float]] = []
cursor = 0
for match in WORD_RE.finditer(cleaned):
if cleaned[cursor : match.start()].strip():
return None
try:
value = float(match.group(2))
except ValueError:
return None
if not math.isfinite(value):
return None
words.append((match.group(1), value))
cursor = match.end()
if cleaned[cursor:].strip() or not words:
return None
return words
def parse_nc(path: Path) -> dict[str, object] | None:
if not path.is_file() or not 300 <= path.stat().st_size <= 2_000_000:
return None
raw = path.read_text(encoding="utf-8", errors="strict")
if "\x00" in raw:
return None
lines = strip_comments(raw).splitlines()
x = y = z = feed = None
motion: int | None = None
selected_tool: int | None = None
tool_changed = False
spindle_on = False
spindle_speed: float | None = None
metric = absolute = False
active_fixture: float | None = None
active_plane: int | None = None
length_offset_active = False
length_offset: int | None = None
stop_after_cut = False
end_after_cut = False
program_ended = False
last_cut_block = -1
retract_after_cut = False
moves: list[Move] = []
for block, line in enumerate(lines):
words = words_for_line(line)
if words is None:
return None
if not words:
continue
if program_ended:
return None
values: dict[str, list[float]] = {}
for letter, value in words:
values.setdefault(letter, []).append(value)
if set(values) - set("NGMTSFXYZIJH"):
return None
if any(len(values.get(letter, [])) > 1 for letter in "TSFXYZIJH"):
return None
motion_codes = [
g
for g in values.get("G", [])
if any(close(g, code) for code in (0.0, 1.0, 2.0, 3.0))
]
if len(motion_codes) > 1:
return None
modal_groups = (
(20.0, 21.0),
(90.0, 91.0),
(90.1, 91.1),
(17.0, 18.0, 19.0),
(40.0, 41.0, 42.0),
(43.0, 49.0),
(54.0, 55.0, 56.0, 57.0, 58.0, 59.0),
(61.0, 61.1, 64.0),
(93.0, 94.0, 95.0),
)
if any(
sum(any(close(g, code) for code in group) for g in values.get("G", [])) > 1
for group in modal_groups
):
return None
has_g43 = any(close(g, 43.0) for g in values.get("G", []))
has_g49 = any(close(g, 49.0) for g in values.get("G", []))
if has_g43 and has_g49:
return None
for g in values.get("G", []):
if close(g, 20.0):
metric = False
elif close(g, 21.0):
metric = True
elif close(g, 90.0):
absolute = True
elif close(g, 91.0):
absolute = False
elif any(close(g, code) for code in (54.0, 55.0, 56.0, 57.0, 58.0, 59.0)):
active_fixture = next(code for code in (54.0, 55.0, 56.0, 57.0, 58.0, 59.0) if close(g, code))
elif close(g, 17.0):
active_plane = 17
elif any(
close(g, code)
for code in (10.0, 28.0, 30.0, 50.0, 51.0, 52.0, 53.0, 68.0, 69.0, 92.0, 92.1, 92.2, 92.3)
):
return None
elif any(close(g, code) for code in (0.0, 1.0, 2.0, 3.0)):
motion = int(round(g))
elif any(close(g, code) for code in (40.0, 43.0, 49.0, 61.0, 61.1, 64.0, 80.0, 91.1, 94.0)):
pass
else:
return None
if values.get("T"):
tool_value = values["T"][-1]
if abs(tool_value - round(tool_value)) > TOL:
return None
selected_tool = int(round(tool_value))
if values.get("H"):
if not has_g43:
return None
h_value = values["H"][-1]
if abs(h_value - round(h_value)) > TOL or int(round(h_value)) != 1:
return None
length_offset = int(round(h_value))
if has_g43:
if length_offset != 1:
return None
length_offset_active = True
if has_g49:
length_offset_active = False
length_offset = None
if values.get("S"):
spindle_speed = values["S"][-1]
if values.get("F"):
feed = values["F"][-1]
m_codes = values.get("M", [])
if any(
not any(close(m, allowed) for allowed in (0.0, 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0, 30.0))
for m in m_codes
):
return None
if len({round(m, 6) for m in m_codes}) != len(m_codes):
return None
if sum(any(close(m, code) for code in (3.0, 4.0, 5.0)) for m in m_codes) > 1:
return None
if any(close(m, 6.0) for m in m_codes) and any(close(m, code) for m in m_codes for code in (3.0, 4.0, 5.0)):
return None
if sum(any(close(m, code) for code in (2.0, 30.0)) for m in m_codes) > 1:
return None
if any(close(m, code) for m in m_codes for code in (2.0, 30.0)) and any(
close(m, code) for m in m_codes for code in (3.0, 4.0, 6.0)
):
return None
if sum(any(close(m, code) for code in (7.0, 8.0, 9.0)) for m in m_codes) > 1:
return None
if any(close(m, 5.0) for m in m_codes):
spindle_on = False
if last_cut_block >= 0 and block > last_cut_block:
stop_after_cut = True
if any(close(m, 6.0) for m in m_codes):
if selected_tool != 1 or spindle_on or length_offset_active:
return None
tool_changed = True
if any(close(m, code) for m in m_codes for code in (3.0, 4.0)):
if not tool_changed or not close(spindle_speed, 6000.0):
return None
if any(close(m, 4.0) for m in m_codes):
return None
spindle_on = True
if any(close(m, code) for m in m_codes for code in (2.0, 30.0)):
if any(axis in values for axis in ("X", "Y", "Z")):
return None
if last_cut_block >= 0 and block > last_cut_block:
end_after_cut = True
stop_after_cut = True
spindle_on = False
program_ended = True
has_axis = any(axis in values for axis in ("X", "Y", "Z"))
if not has_axis:
continue
if motion is None or not absolute or not metric or not close(active_fixture, 54.0):
return None
nx = values.get("X", [x])[-1]
ny = values.get("Y", [y])[-1]
nz = values.get("Z", [z])[-1]
i_value = values.get("I", [None])[-1]
j_value = values.get("J", [None])[-1]
move = Move(block, motion, x, y, z, nx, ny, nz, feed, i_value, j_value)
has_xy_word = "X" in values or "Y" in values
moved_xy = has_xy_word and (
move.start_x is None
or move.start_y is None
or move.end_x is None
or move.end_y is None
or move.xy_distance > TOL
or motion in (2, 3)
)
moved_z = (
move.start_z is not None
and move.end_z is not None
and abs(move.end_z - move.start_z) > TOL
)
if motion in (2, 3):
if (
active_plane != 17
or not ("I" in values or "J" in values)
or None in (move.start_x, move.start_y, move.end_x, move.end_y)
):
return None
i_offset = 0.0 if move.i is None else move.i
j_offset = 0.0 if move.j is None else move.j
radius = math.hypot(i_offset, j_offset)
end_radius = math.hypot(
float(move.end_x) - (float(move.start_x) + i_offset),
float(move.end_y) - (float(move.start_y) + j_offset),
)
if radius <= TOL or abs(end_radius - radius) > max(0.01, radius * 1e-5):
return None
elif "I" in values or "J" in values:
return None
if motion == 0:
if moved_xy and (
move.start_z is None
or move.end_z is None
or min(move.start_z, move.end_z) <= TOL
):
return None
if moved_z and move.end_z is not None and move.end_z <= TOL:
return None
intersects_material_z = (
move.end_z is not None
and (move.end_z <= TOL or move.start_z is not None and move.start_z <= TOL)
)
is_cut = motion in (1, 2, 3) and intersects_material_z and (moved_xy or moved_z)
if is_cut:
if not (
tool_changed
and spindle_on
and close(spindle_speed, 6000.0)
and close(active_fixture, 54.0)
):
return None
if move.end_z < -8.0 - TOL:
return None
if moved_xy and not close(feed, 750.0):
return None
if moved_z and not moved_xy and (feed is None or feed <= 0.0):
return None
last_cut_block = block
retract_after_cut = False
if last_cut_block >= 0 and block > last_cut_block and motion == 0 and move.end_z is not None and move.end_z > TOL:
retract_after_cut = True
moves.append(move)
x, y, z = nx, ny, nz
if not (
metric
and absolute
and close(active_fixture, 54.0)
and active_plane == 17
and tool_changed
and program_ended
):
return None
if not (last_cut_block >= 0 and stop_after_cut and end_after_cut and retract_after_cut):
return None
return {"moves": moves}
def native_check(path: Path) -> dict[str, object] | None:
if not path.is_file() or not 1_000 <= path.stat().st_size <= 20_000_000:
return None
checker = textwrap.dedent(
f"""
import json
import math
import FreeCAD as App
FILE = {str(path)!r}
MARKER = {NATIVE_MARKER!r}
result = {{"ok": False}}
doc = None
def near(value, expected, tol=1e-6):
return abs(float(value) - expected) <= tol
def bbox_values(shape):
box = shape.BoundBox
return [box.XMin, box.XMax, box.YMin, box.YMax, box.ZMin, box.ZMax]
try:
if tuple(App.Version()[:3]) != ("0", "21", "2"):
raise RuntimeError("wrong FreeCAD version")
doc = App.openDocument(FILE)
if doc is None:
raise RuntimeError("document did not open")
doc.recompute()
jobs = [
obj for obj in doc.Objects
if type(getattr(obj, "Proxy", None)).__module__ == "Path.Main.Job"
and type(getattr(obj, "Proxy", None)).__name__ == "ObjectJob"
]
if len(jobs) != 1:
raise RuntimeError("expected one native Job")
job = jobs[0]
operations = list(job.Operations.Group)
controllers = list(job.Tools.Group)
models = list(job.Model.Group)
if len(operations) != 1 or len(controllers) != 1 or len(models) != 1:
raise RuntimeError("wrong Job group cardinality")
op = operations[0]
if type(getattr(op, "Proxy", None)).__module__ != "Path.Op.MillFace":
raise RuntimeError("operation is not MillFace")
if type(op.Proxy).__name__ != "ObjectFace" or not bool(op.Active):
raise RuntimeError("inactive or invalid MillFace")
if not near(op.StartDepth.Value, 0.0) or not near(op.FinalDepth.Value, -8.0):
raise RuntimeError("wrong operation depths")
if op.SafeHeight.Value <= 0.0 or op.ClearanceHeight.Value <= 0.0:
raise RuntimeError("unsafe operation heights")
expected_box = [-60.0, 60.0, -40.0, 40.0, -18.0, 0.0]
for shape in (models[0].Shape, job.Stock.Shape):
if shape.isNull() or not shape.isValid() or len(shape.Solids) != 1:
raise RuntimeError("model or stock is not one valid solid")
if any(not near(a, b) for a, b in zip(bbox_values(shape), expected_box)):
raise RuntimeError("model or zero-extension stock bounds are wrong")
for prop in ("ExtXneg", "ExtXpos", "ExtYneg", "ExtYpos", "ExtZneg", "ExtZpos"):
if not near(getattr(job.Stock, prop).Value, 0.0):
raise RuntimeError("stock extension is nonzero")
if str(job.PostProcessor).lower() != "linuxcnc" or "G54" not in list(job.Fixtures):
raise RuntimeError("wrong postprocessor or fixture")
if len(op.Base) != 1 or len(op.Base[0][1]) != 1:
raise RuntimeError("Face operation lacks one base face")
base_obj, subnames = op.Base[0]
selected_face = base_obj.Shape.getElement(subnames[0])
face_box = selected_face.BoundBox
if not (
near(face_box.XMin, -60.0) and near(face_box.XMax, 60.0)
and near(face_box.YMin, -40.0) and near(face_box.YMax, 40.0)
and near(face_box.ZMin, 0.0) and near(face_box.ZMax, 0.0)
and near(abs(selected_face.normalAt(0, 0).z), 1.0)
):
raise RuntimeError("operation is not based on the top face")
controller = controllers[0]
if op.ToolController is not controller or int(controller.ToolNumber) != 1:
raise RuntimeError("wrong ToolController")
if not near(controller.SpindleSpeed, 6000.0) or str(controller.SpindleDir) != "Forward":
raise RuntimeError("wrong spindle configuration")
if not near(controller.HorizFeed.Value, 12.5):
raise RuntimeError("horizontal feed is not 750 mm/min")
tool = controller.Tool
descriptor = " ".join(
str(value) for value in (
getattr(tool, "Label", ""),
getattr(tool, "ToolFamily", ""),
getattr(tool, "ShapeName", ""),
)
).lower().replace("_", " ").replace("-", " ")
if "face mill" not in descriptor:
raise RuntimeError("T1 is not identified as a face mill")
diameter = float(tool.Diameter.Value)
if not math.isfinite(diameter) or diameter <= 0.0 or diameter > 500.0:
raise RuntimeError("invalid tool diameter")
commands = list(op.Path.Commands)
if len(commands) < 10:
raise RuntimeError("MillFace path is empty or trivial")
path_z = [float(c.Parameters["Z"]) for c in commands if "Z" in c.Parameters]
if not path_z or not near(min(path_z), -8.0, 1e-3):
raise RuntimeError("actual MillFace path misses final depth")
result = {{"ok": True, "tool_diameter": diameter}}
except Exception as exc:
result = {{"ok": False, "error": str(exc)}}
finally:
if doc is not None:
App.closeDocument(doc.Name)
print(MARKER + json.dumps(result, sort_keys=True))
"""
)
try:
with tempfile.TemporaryDirectory(prefix="task_c01_eval_") as tmp:
script = Path(tmp) / "check_native.py"
script.write_text(checker, encoding="utf-8")
completed = subprocess.run(
["/usr/bin/freecadcmd", str(script)],
stdout=subprocess.PIPE,
stderr=subprocess.STDOUT,
text=True,
timeout=90,
check=False,
)
except (OSError, subprocess.SubprocessError):
return None
if completed.returncode != 0:
return None
reports = [line[len(NATIVE_MARKER) :] for line in completed.stdout.splitlines() if line.startswith(NATIVE_MARKER)]
if len(reports) != 1:
return None
try:
report = json.loads(reports[0])
except (TypeError, json.JSONDecodeError):
return None
if not isinstance(report, dict) or report.get("ok") is not True:
return None
return report
def coverage_ok(moves: list[Move], tool_diameter: float) -> bool:
radius = tool_diameter / 2.0
final_moves = [
move
for move in moves
if move.motion in (1, 2, 3)
and close(move.start_z, -8.0)
and close(move.end_z, -8.0)
and move.xy_distance > TOL
]
if not final_moves:
return False
xs = [value for move in final_moves for value in (move.start_x, move.end_x) if value is not None]
ys = [value for move in final_moves for value in (move.start_y, move.end_y) if value is not None]
if not xs or not ys:
return False
if min(xs) - radius > -60.0 + TOL or max(xs) + radius < 60.0 - TOL:
return False
if min(ys) - radius > -40.0 + TOL or max(ys) + radius < 40.0 - TOL:
return False
segments = [
((float(move.start_x), float(move.start_y)), (float(move.end_x), float(move.end_y)))
for move in final_moves
if None not in (move.start_x, move.start_y, move.end_x, move.end_y)
]
if not segments:
return False
for x in range(-60, 61):
for y in range(-40, 41):
point = (float(x), float(y))
if min(point_segment_distance(point, start, end) for start, end in segments) > radius + 0.1:
return False
travel = sum(move.xy_distance for move in final_moves)
return travel >= 0.60 * (120.0 * 80.0) / tool_diameter
def main() -> bool:
native = native_check(FCSTD_PATH)
if native is None:
return False
parsed = parse_nc(NC_PATH)
if parsed is None:
return False
diameter = native.get("tool_diameter")
moves = parsed.get("moves")
if not isinstance(diameter, (int, float)) or not isinstance(moves, list):
return False
return coverage_ok(moves, float(diameter))
if __name__ == "__main__":
try:
result = main()
except Exception:
result = False
print(True if result else False)
|