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feat(slicing): enforce filament flow-type restrictions in auto grouping

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Filament grouping already consumed per-filament forbidden nozzle volume
types, but every call site passed an empty map, so a variant-restricted
filament (e.g. one limited to "Direct Drive TPU High Flow") could be
auto-grouped onto an incompatible nozzle flow type on multi-variant
printers.

- add convert_to_nvt_type() to parse extruder variant strings
- add Print::get_filament_unprintable_flow(): forbidden volume types =
  printer extruder variants minus the filament's declared variants;
  filaments declaring no variants stay unrestricted
- feed the map into grouping at the by-object path (Print.cpp) and all
  six mapping/planning sites in reorder_extruders_for_minimum_flush_volume
- unit-test the string parser

Non-restricted configurations produce an empty map, so existing
printers' grouping and g-code are unchanged.
This commit is contained in:
SoftFever
2026-07-10 15:10:46 +08:00
parent 9e8ac03476
commit b2eeed2622
7 changed files with 121 additions and 7 deletions
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src/libslic3r/PrintConfig.hpp
+3
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@@ -568,6 +568,9 @@ extern bool is_filament_extruder_override_key(const std::string &opt_key);
extern std::vector<std::map<int, int>> get_extruder_ams_count(const std::vector<std::string> &strs);
extern std::vector<std::string> save_extruder_ams_count_to_string(const std::vector<std::map<int, int>> &extruder_ams_count);
// maps a full extruder variant string (e.g. "Direct Drive High Flow") to its NozzleVolumeType; nvtHybrid if unparsable
extern NozzleVolumeType convert_to_nvt_type(const std::string& variant_str);
// for parse extruder_nozzle_stats (per-extruder physical nozzle inventory by volume type)
extern std::vector<std::map<NozzleVolumeType, int>> get_extruder_nozzle_stats(const std::vector<std::string> &strs);
extern std::vector<std::string> save_extruder_nozzle_stats_to_string(const std::vector<std::map<NozzleVolumeType, int>> &extruder_nozzle_stats);