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ModelTranslator: UVPM 弃用启发式(headless 随机崩引擎),只保留旋转15°

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系统调试结论:UVPM heuristic 搜索在 headless 下随机崩溃引擎进程
(well1500 3/3、gargoyle 1/2),确定性差;旋转步进无辜。改为只用
rotation_step=15 稳定小提升(gargoyle 52.3→55.6%、well1500 +uvpm 稳定)。
移除 _uvpm_pack_once/重试与 UVPM_HEURISTIC_TIME。

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
ud18010
2026-07-21 16:17:36 +08:00
co-authored by Claude Opus 4.8
parent d44a2fa997
commit 4f18c770c1
1 changed files with 4 additions and 5 deletions
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Tools/ModelTranslator/bl_decimate.py
+4 -5
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@@ -141,8 +141,7 @@ PACK_MARGIN = 0.002 # 岛间距 ≈ 2048 图 4px
UVPM_EXT = "bl_ext.user_default.uvpackmaster4" # UVPackmaster 4 扩展模块名 UVPM_EXT = "bl_ext.user_default.uvpackmaster4" # UVPackmaster 4 扩展模块名
UVPM_PIXEL_MARGIN = 4 # UVPM 岛间距（像素），与 PACK_MARGIN * UVPM_TEX_SIZE 同口径 UVPM_PIXEL_MARGIN = 4 # UVPM 岛间距（像素），与 PACK_MARGIN * UVPM_TEX_SIZE 同口径
UVPM_TEX_SIZE = 2048 UVPM_TEX_SIZE = 2048
UVPM_ROTATION_STEP = 15 # UVPM 旋转步进（度）；比默认 90 更细，利于薄斜条对齐 UVPM_ROTATION_STEP = 15 # UVPM 旋转步进（度）；比默认 90 更细，利于薄斜条对齐（启发式因引擎崩溃已弃用）
UVPM_HEURISTIC_TIME = 10 # UVPM 启发式搜索秒数上限（默认 0=无限，必须给正值上限）
SEAM_ANGLE_SWEEP = (55.0, 45.0, 35.0) # 首选 SEAM_ANGLE_DEG 不过门时依次下探的 seam 角度 SEAM_ANGLE_SWEEP = (55.0, 45.0, 35.0) # 首选 SEAM_ANGLE_DEG 不过门时依次下探的 seam 角度
STRETCH_ITERS = 30 # minimize_stretch 松弛迭代次数 STRETCH_ITERS = 30 # minimize_stretch 松弛迭代次数
REL_WELD = 1e-4 # 焊接距离占局部包围盒对角线比例（避免 cm/m 单位差异导致绝对阈值失准） REL_WELD = 1e-4 # 焊接距离占局部包围盒对角线比例（避免 cm/m 单位差异导致绝对阈值失准）
@@ -299,7 +298,9 @@ def _uvpm_set(p, name, value, warnings):
def _uvpm_repack(obj, warnings): def _uvpm_repack(obj, warnings):
"""UVPM4 重排当前 UV 布局，成功返回 True；任何失败记警告返回 False， """UVPM4 重排当前 UV 布局，成功返回 True；任何失败记警告返回 False，
保底布局（pack_islands/smart_project）原样保留。""" 保底布局（pack_islands/smart_project）原样保留。rotation_step 调细以利薄斜条对齐。
注：UVPM 启发式搜索（heuristic）在 headless 下会随机崩溃引擎进程（Engine process died），
确定性/稳定性差，故不启用——只用旋转增强这一稳定杠杆。"""
global _uvpm_failed global _uvpm_failed
if _uvpm_failed: if _uvpm_failed:
return False return False
@@ -312,8 +313,6 @@ def _uvpm_repack(obj, warnings):
p.pixel_margin_tex_size = UVPM_TEX_SIZE p.pixel_margin_tex_size = UVPM_TEX_SIZE
_uvpm_set(p, "rotation_enable", True, warnings) _uvpm_set(p, "rotation_enable", True, warnings)
_uvpm_set(p, "rotation_step", UVPM_ROTATION_STEP, warnings) _uvpm_set(p, "rotation_step", UVPM_ROTATION_STEP, warnings)
_uvpm_set(p, "heuristic_enable", True, warnings)
_uvpm_set(p, "heuristic_search_time", UVPM_HEURISTIC_TIME, warnings)
bpy.context.scene.tool_settings.use_uv_select_sync = True bpy.context.scene.tool_settings.use_uv_select_sync = True
bpy.context.view_layer.objects.active = obj bpy.context.view_layer.objects.active = obj
bpy.ops.object.mode_set(mode='EDIT') bpy.ops.object.mode_set(mode='EDIT')