Method getMaterialMask

plugins/buildingplan/itemfilter.h:30–30

    df::item_quality getMaxQuality() const {return max_quality; }
    bool getDecoratedOnly() const { return decorated_only; }
    df::dfhack_material_category getMaterialMask() const { return mat_mask; }
    std::set<DFHack::MaterialInfo> getMaterials() const { return materials; }

    bool matches(df::dfhack_material_category mask) const;