File size: 3,682 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 | from __future__ import annotations
import argparse
import os
import subprocess
import sys
import tempfile
BLEND_PATH = "/home/user/Desktop/answer.blend"
BLENDER_PATH = os.environ.get("BLENDER_PATH", "blender")
TOL = 1e-3
def _full_update():
import bpy
scn = bpy.context.scene
bpy.context.view_layer.update()
scn.frame_set(scn.frame_current)
def _find_y_driver(obj):
ad = obj.animation_data
if ad is None:
return None
for fc in ad.drivers:
if fc.data_path == "location" and fc.array_index == 1:
return fc
return None
def _check_driver_paths(fc):
invalid_paths = []
try:
for v in fc.driver.variables:
for t in v.targets:
dp = getattr(t, "data_path", "")
if dp and t.id is not None:
try:
t.id.path_resolve(dp)
except Exception as ex:
invalid_paths.append(f"{v.name}:{dp} ({ex})")
except Exception as ex:
invalid_paths.append(f"(traversal error: {ex})")
return invalid_paths
def _run_eval(blend_path: str) -> bool:
import bpy
if not os.path.isfile(blend_path):
return False
try:
bpy.ops.wm.open_mainfile(filepath=blend_path)
except Exception:
return False
source = bpy.data.objects.get("Source")
anchor = bpy.data.objects.get("Anchor")
driven = bpy.data.objects.get("Driven")
if any(obj is None or obj.type != "MESH" for obj in (source, anchor, driven)):
return False
fc = _find_y_driver(driven)
if fc is None:
return False
if _check_driver_paths(fc):
return False
if not bool(getattr(fc.driver, "is_valid", True)):
return False
scn = bpy.context.scene
scn.frame_set(1)
_full_update()
if abs(driven.location.y - (source.location.x - anchor.location.z)) >= TOL:
return False
source.location.x = 5.0
_full_update()
if abs(driven.location.y - 4.0) >= TOL:
return False
anchor.location.z = 2.0
_full_update()
if abs(driven.location.y - 3.0) >= TOL:
return False
return True
def _write_result(result_file: str | None, passed: bool):
print("True" if passed else "False")
def _run_in_blender(blend_path: str, result_file: str | None) -> bool:
passed = _run_eval(blend_path)
_write_result(result_file, passed)
return passed
def _run_via_blender(blend_path: str) -> bool:
cmd = [
BLENDER_PATH,
"--background",
"--factory-startup",
"--python",
__file__,
"--",
"--blend",
blend_path,
]
proc = subprocess.run(cmd, capture_output=True, text=True,
encoding="utf-8", errors="replace")
return proc.returncode == 0
def _have_bpy() -> bool:
try:
import bpy # noqa: F401
return True
except Exception:
return False
def eval_outputs(blend_path, expected=None, postconfig=None):
return _run_eval(blend_path) if _have_bpy() else _run_via_blender(blend_path)
def _parse_blend_path() -> str:
parser = argparse.ArgumentParser(add_help=False)
parser.add_argument("--blend", default=BLEND_PATH)
script_args = sys.argv[sys.argv.index("--") + 1:] if "--" in sys.argv else []
return parser.parse_known_args(script_args)[0].blend
def main() -> int:
blend_path = _parse_blend_path()
passed = _run_in_blender(blend_path, None) if _have_bpy() else _run_via_blender(blend_path)
print("True" if passed else "False")
return 0 if passed else 1
if __name__ == "__main__":
raise SystemExit(main())
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