Method get_material_tensor

tools/Assembler/Materials/Material.h:35–37

    public:
        virtual Float get_material_tensor(size_t i, size_t j, size_t k, size_t l, VectorF coord) const {
            throw NotImplementedError("get_material_tensor() is not implemented by subclasses.");
        }
        virtual MatrixF strain_to_stress(const MatrixF& strain, VectorF coord) const {
            throw NotImplementedError("strain_to_stress() is not implemented by subclasses.");
        }