61 lines
2.1 KiB
Python
61 lines
2.1 KiB
Python
"""诊断：导入 FBX 检查几何是否损坏（NaN 顶点/退化面/validate 修复量）。
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用法：blender -b --factory-startup --python tests/bl_diag_mesh.py -- <model.fbx> [apply]
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"""
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import math
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import os
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import sys
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sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
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def main():
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import bpy
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from bl_decimate import join_meshes
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argv = sys.argv[sys.argv.index("--") + 1:]
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path = argv[0]
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do_apply = len(argv) > 1 and argv[1] == "apply"
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bpy.ops.wm.read_factory_settings(use_empty=True)
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before = set(bpy.data.objects)
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bpy.ops.import_scene.fbx(filepath=path)
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new = [o for o in bpy.data.objects if o not in before]
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meshes = [o for o in new if o.type == 'MESH']
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print("DIAG objects=%d meshes=%d" % (len(new), len(meshes)))
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for o in new:
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print("DIAG obj=%r type=%s scale=%s" % (o.name, o.type, tuple(round(s, 4) for s in o.scale)))
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obj = join_meshes(meshes)
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if do_apply:
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bpy.ops.object.select_all(action='DESELECT')
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obj.select_set(True)
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bpy.context.view_layer.objects.active = obj
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bpy.ops.object.transform_apply(location=True, rotation=True, scale=True)
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print("DIAG transform applied")
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me = obj.data
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print("DIAG verts=%d polys=%d dims=%s" % (
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len(me.vertices), len(me.polygons),
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tuple(round(d, 4) for d in obj.dimensions)))
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nan_verts = 0
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huge_verts = 0
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for v in me.vertices:
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x, y, z = v.co
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if any(math.isnan(c) or math.isinf(c) for c in (x, y, z)):
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nan_verts += 1
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elif max(abs(x), abs(y), abs(z)) > 1e6:
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huge_verts += 1
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print("DIAG nan_verts=%d huge_verts=%d" % (nan_verts, huge_verts))
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zero_area = sum(1 for p in me.polygons if p.area < 1e-12)
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print("DIAG zero_area_polys=%d" % zero_area)
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# validate(verbose) 会打印它修的每个问题；返回 True 表示有改动
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changed = me.validate(verbose=True)
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print("DIAG validate_changed=%s" % changed)
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print("DIAG after_validate verts=%d polys=%d" % (len(me.vertices), len(me.polygons)))
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print("DIAG DONE")
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if __name__ == "__main__" and "--" in sys.argv:
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main()
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