Method length

src/ifcgeom/taxonomy.cpp:502–512

double piecewise_function::start() const { return start_; }
double piecewise_function::end() const { return start_ + length(); }
double piecewise_function::length() const {
    return std::accumulate(spans_.begin(), spans_.end(), 0.0, [](const auto& v, const auto& s) { return v + s->length(); });

    // this is a secondary option where we only compute length once and cache it.
    // mutex is needed to prevent interruption of the accumulation if there is multi-threading
    // skipping this detail for now and just adding up the span lengths every time
    //if (!length_.has_value()) {
    //    length_ = std::accumulate(spans_.begin(), spans_.end(), 0.0, [](const auto& v, const auto& s) { return v + s->length(); });
    //}
    //return *length_;
}


gradient_function::gradient_function(piecewise_function::const_ptr horizontal, piecewise_function::const_ptr vertical, const IfcUtil::IfcBaseInterface* instance) :