## On this page # simulation\_framework::evaluator::MinTtcEvaluator Class Reference Last update: 16.07.2025 class [MinTtcEvaluator](classsimulation__framework_1_1evaluator_1_1MinTtcEvaluator.xhtml "class MinTtcEvaluator") [More...](classsimulation__framework_1_1evaluator_1_1MinTtcEvaluator.xhtml#details) `#include <min_ttc_evaluator.h>` Inheritance diagram for simulation_framework::evaluator::MinTtcEvaluator: ![Inheritance graph](/sites/default/files/migrate-content/avxcelerate_simulation_framework_2025_r2_2/classsimulation__framework_1_1evaluator_1_1MinTtcEvaluator__inherit__graph.png) \[[legend](graph_legend.xhtml)\] Collaboration diagram for simulation_framework::evaluator::MinTtcEvaluator: ![Collaboration graph](/sites/default/files/migrate-content/avxcelerate_simulation_framework_2025_r2_2/classsimulation__framework_1_1evaluator_1_1MinTtcEvaluator__coll__graph.png) \[[legend](graph_legend.xhtml)\] ## Public Member Functions [MinTtcEvaluator](classsimulation__framework_1_1evaluator_1_1MinTtcEvaluator.xhtml#a5a35e9df18a09910460479a7bfdadf7e) (const std::string &kpi\_name="min\_ttc") void [Init](classsimulation__framework_1_1evaluator_1_1MinTtcEvaluator.xhtml#a1c317953b082649c8134c3c79cec5160) () override Initializes the KPI logic. void [Reset](classsimulation__framework_1_1evaluator_1_1MinTtcEvaluator.xhtml#aff4c106aeed6de6bb55d3e5c4680e04a) () override Resets the KPI logic. [core::kpi::KpiContent](structsimulation__framework_1_1core_1_1kpi_1_1KpiContent.xhtml) [CalculateKpi](classsimulation__framework_1_1evaluator_1_1MinTtcEvaluator.xhtml#aec1741a5c8b655182c090b2bafdafb12) (const osi3::GroundTruth &ground\_truth) override Executes the core KPI calculation logic. core::kpi::Type [GetKpiType](classsimulation__framework_1_1evaluator_1_1MinTtcEvaluator.xhtml#af021217919c4e7498c6247dd46947e2c) () const override Retrieves the KPI type. ![-](/sites/default/files/migrate-content/avxcelerate_simulation_framework_2025_r2_2/closed.png) Public Member Functions inherited from [simulation\_framework::core::kpi::IKpi< osi3::GroundTruth >](classsimulation__framework_1_1core_1_1kpi_1_1IKpi.xhtml)[virtual](classsimulation__framework_1_1core_1_1Topic.xhtml) **~IKpi** ()=[default](classsimulation__framework_1_1core_1_1Topic.xhtml) Virtual destructor for proper cleanup of derived classes. ## Detailed Description class [MinTtcEvaluator](classsimulation__framework_1_1evaluator_1_1MinTtcEvaluator.xhtml "class MinTtcEvaluator") Definition of [MinTtcEvaluator](classsimulation__framework_1_1evaluator_1_1MinTtcEvaluator.xhtml "class MinTtcEvaluator") class to calculate the minimum time to collision. This will store the lowest value of TTC being observed during one simulation run. Definition at line [32](min__ttc__evaluator_8h_source.xhtml#l00032) of file [min\_ttc\_evaluator.h](min__ttc__evaluator_8h_source.xhtml). ## Constructor & Destructor Documentation ## [◆ ](#a5a35e9df18a09910460479a7bfdadf7e)MinTtcEvaluator() simulation\_framework::evaluator::MinTtcEvaluator::MinTtcEvaluator ( const std::string & *kpi\_name* = `"min_ttc"`) Definition at line [20](min__ttc__evaluator_8cpp_source.xhtml#l00020) of file [min\_ttc\_evaluator.cpp](min__ttc__evaluator_8cpp_source.xhtml). 21 : min_ttc_(std::chrono::milliseconds::max()), kpi_name_(kpi_name) 22{ 23} ## Member Function Documentation ## [◆ ](#aec1741a5c8b655182c090b2bafdafb12)CalculateKpi() [core::kpi::KpiContent](structsimulation__framework_1_1core_1_1kpi_1_1KpiContent.xhtml) simulation\_framework::evaluator::MinTtcEvaluator::CalculateKpi ( const osi3::GroundTruth & *input*) overridevirtual Executes the core KPI calculation logic. Parameters inputThe input data required for KPI calculation. ReturnsThe calculated KPI content as a `KpiContent` object. Implements [simulation\_framework::core::kpi::IKpi< osi3::GroundTruth >](classsimulation__framework_1_1core_1_1kpi_1_1IKpi.xhtml#a614cb6051405e8865257360eefff9ab6). Definition at line [32](min__ttc__evaluator_8cpp_source.xhtml#l00032) of file [min\_ttc\_evaluator.cpp](min__ttc__evaluator_8cpp_source.xhtml). 33{ 34 core::kpi::KpiContent kpi_content; 35 kpi_content.name = kpi_name_; 36 kpi_content.data_type = core::kpi::Datatype::Value::kDouble; 37 kpi_content.type = [GetKpiType](classsimulation__framework_1_1evaluator_1_1MinTtcEvaluator.xhtml#af021217919c4e7498c6247dd46947e2c)(); 38 kpi_content.unit = "ms"; 39 kpi_content.timestamp.seconds = ground_truth.timestamp().seconds(); 40 kpi_content.timestamp.nanoseconds = ground_truth.timestamp().nanos(); 41 42 const auto ttc = ttc_calculator_.Calculate(ground_truth); 43 44 if (ttc < min_ttc_) 45 { 46 min_ttc_ = ttc; 47 } 48 49 kpi_content.value = std::to_string(min_ttc_.count()); 50 51 return kpi_content; 52} [simulation\_framework::evaluator::MinTtcEvaluator::GetKpiType](classsimulation__framework_1_1evaluator_1_1MinTtcEvaluator.xhtml#af021217919c4e7498c6247dd46947e2c) core::kpi::Type GetKpiType() const override Retrieves the KPI type. **Definition** [min\_ttc\_evaluator.cpp:54](min__ttc__evaluator_8cpp_source.xhtml#l00054) ## [◆ ](#af021217919c4e7498c6247dd46947e2c)GetKpiType() core::kpi::Type simulation\_framework::evaluator::MinTtcEvaluator::GetKpiType ( ) const overridevirtual Retrieves the KPI type. Indicates the type of KPI, which can be one of the following: - `kpi::Type::kScalar`: A scalar value with a unit. - `kpi::Type::kTimeSeries`: A time series representation. - `kpi::Type::kLog`: A continuous log. ReturnsThe type of the KPI as a `kpi::Type` enum value. Implements [simulation\_framework::core::kpi::IKpi< osi3::GroundTruth >](classsimulation__framework_1_1core_1_1kpi_1_1IKpi.xhtml#aeef163c532f5b7b03e685642cb75ccaa). Definition at line [54](min__ttc__evaluator_8cpp_source.xhtml#l00054) of file [min\_ttc\_evaluator.cpp](min__ttc__evaluator_8cpp_source.xhtml). 55{ 56 return core::kpi::Type::kScalar; 57} ## [◆ ](#a1c317953b082649c8134c3c79cec5160)Init() void simulation\_framework::evaluator::MinTtcEvaluator::Init ( ) overridevirtual Initializes the KPI logic. Sets up any necessary state or resources required for KPI calculation. Implements [simulation\_framework::core::kpi::IKpi< osi3::GroundTruth >](classsimulation__framework_1_1core_1_1kpi_1_1IKpi.xhtml#affa38e79e2d2fe57ac913fa736437fae). Definition at line [25](min__ttc__evaluator_8cpp_source.xhtml#l00025) of file [min\_ttc\_evaluator.cpp](min__ttc__evaluator_8cpp_source.xhtml). 25{} ## [◆ ](#aff4c106aeed6de6bb55d3e5c4680e04a)Reset() void simulation\_framework::evaluator::MinTtcEvaluator::Reset ( ) overridevirtual Resets the KPI logic. Clears temporary data and prepares the KPI logic for a new calculation, especially if the simulation needs to be restarted. Implements [simulation\_framework::core::kpi::IKpi< osi3::GroundTruth >](classsimulation__framework_1_1core_1_1kpi_1_1IKpi.xhtml#ad08cdb1d1091c84920a9733a81c752a5). Definition at line [27](min__ttc__evaluator_8cpp_source.xhtml#l00027) of file [min\_ttc\_evaluator.cpp](min__ttc__evaluator_8cpp_source.xhtml). 28{ 29 min_ttc_ = std::chrono::milliseconds::max(); 30} --- The documentation for this class was generated from the following files:- [min\_ttc\_evaluator.h](min__ttc__evaluator_8h_source.xhtml) - [min\_ttc\_evaluator.cpp](min__ttc__evaluator_8cpp_source.xhtml)