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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 7bab2c2785
commit ccb7416a6d
3 changed files with 23 additions and 0 deletions
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4
src/libslic3r/PrintConfig.cpp
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@@ -8041,6 +8041,10 @@ size_t DynamicPrintConfig::get_parameter_size(const std::string& param_name, siz
static void extend_extruder_variant(DynamicPrintConfig& config, const unsigned int num_extruders)
{
// 1. Make sure the `extruder_variant_list` is the same length as extruder cnt
if (!config.has("extruder_variant_list")) {
config.set_key_value("extruder_variant_list",
new ConfigOptionStrings(std::vector<std::string>(num_extruders, "Direct Drive Standard")));
}
auto extruder_variant_opt = dynamic_cast<ConfigOptionStrings*>(config.option("extruder_variant_list"));
assert(extruder_variant_opt != nullptr);
extruder_variant_opt->resize(num_extruders, extruder_variant_opt); // Use the first option as the default value, so all extruders have the same variant