Method UpdateFollowScale

core/graphics/interaction/InteractionContext.cpp:140–173

}

void interaction::InteractionContext::UpdateFollowScale(scale::AbstractScale &pinchScale,
                                                        nlohmann::json &pinchValues,
                                                        std::size_t valueStart,
                                                        std::size_t valueEnd) {

//    const std::string &pinchField = pinchScale.field;

    std::string followField = this->chart_->getYScaleFields()[0];

    // nlohmann::json pinchValuesMap;
    // for(std::size_t index = 0; index < pinchValues.size(); ++index) {
    //     nlohmann::json item = pinchValues[index];
    //     pinchValuesMap[item.dump()] = true;
    // }

    // 根据主轴的 value 值找到从轴的 value 值
    // nlohmann::json values;
    // const std::size_t dataSize = chart_->GetData().size();
    // for(std::size_t index = 0; index < dataSize; ++index) {
    //     nlohmann::json item = chart_->GetData()[index];

    //     nlohmann::json &value = item[pinchField];
    //     if(pinchValuesMap.contains(value.dump())) {
    //         nlohmann::json followValue = item[followField];
    //         values.push_back(followValue);
    //     }
    // }

    double rangeMin = DBL_MAX, rangeMax = DBL_MIN;
    std::for_each(this->chart_->geoms_.begin(), this->chart_->geoms_.end(), [&](auto &geom) -> void {
        util::JsonRangeInGeomDataArray(geom->GetDataArray(), followField, valueStart, valueEnd, &rangeMin, &rangeMax);
    });
    UpdateScale(followField, {{"min", rangeMin}, {"max", rangeMax}, {"nice", true}});
}

void interaction::InteractionContext::UpdateScale(const std::string &field, nlohmann::json cfg) {
    auto &scale = this->chart_->GetScale(field);