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Fix crashes when loading old 3MF project (#11933)

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Enhance backward compatibility for filament extruder variants in 3MF project files
Fix crashes when loading old 3MF project
This commit is contained in:
SoftFever
2026-01-13 09:40:42 +08:00
committed by GitHub
parent 1eae2bf529
commit 00878c0145
3 changed files with 23 additions and 0 deletions
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7
src/libslic3r/PresetBundle.cpp
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@@ -3315,6 +3315,13 @@ void PresetBundle::load_config_file_config(const std::string &name_or_path, bool
filament_self_indice[index] = index + 1;
}
std::vector<int> filament_self_indice = std::move(config.option<ConfigOptionInts>("filament_self_index")->values);
// ORCA: Initialize filament_extruder_variant for backward compatibility with old 3mf files
// that don't have this option saved or have it with default single-element value
ConfigOptionStrings* filament_extruder_variant_opt = config.option<ConfigOptionStrings>("filament_extruder_variant");
if (!filament_extruder_variant_opt || filament_extruder_variant_opt->size() < num_filaments) {
std::vector<std::string>& filament_extruder_variant = config.option<ConfigOptionStrings>("filament_extruder_variant", true)->values;
filament_extruder_variant.resize(num_filaments, "Direct Drive Standard");
}
if (config.option("extruder_variant_list")) {
//3mf support multiple extruder logic
size_t extruder_count = config.option<ConfigOptionFloats>("nozzle_diameter")->values.size();