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 # Class simulation\_framework::evaluator::MinTtcEvaluator

 Last update: 22.04.2026 

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**Definition**: `autonomy/evaluator/min_ttc_evaluator/min_ttc_evaluator.h` (line 33)

class [MinTtcEvaluator](classsimulation__framework_1_1evaluator_1_1MinTtcEvaluator.md#classsimulation__framework_1_1evaluator_1_1MinTtcEvaluator)

Definition of [MinTtcEvaluator](classsimulation__framework_1_1evaluator_1_1MinTtcEvaluator.md#classsimulation__framework_1_1evaluator_1_1MinTtcEvaluator) class to calculate the minimum time to collision. This will store the lowest value of TTC being observed during one simulation run.

**Inherits from**:

- [simulation\_framework::core::kpi::IKpi< osi3::GroundTruth >](classsimulation__framework_1_1core_1_1kpi_1_1IKpi.md#classsimulation__framework_1_1core_1_1kpi_1_1IKpi)

## Members

- [CalculateKpi](classsimulation__framework_1_1evaluator_1_1MinTtcEvaluator.md#classsimulation__framework_1_1evaluator_1_1MinTtcEvaluator_1aec1741a5c8b655182c090b2bafdafb12)
- [GetKpiType](classsimulation__framework_1_1evaluator_1_1MinTtcEvaluator.md#classsimulation__framework_1_1evaluator_1_1MinTtcEvaluator_1af021217919c4e7498c6247dd46947e2c)
- [Init](classsimulation__framework_1_1evaluator_1_1MinTtcEvaluator.md#classsimulation__framework_1_1evaluator_1_1MinTtcEvaluator_1a1c317953b082649c8134c3c79cec5160)
- [MinTtcEvaluator](classsimulation__framework_1_1evaluator_1_1MinTtcEvaluator.md#classsimulation__framework_1_1evaluator_1_1MinTtcEvaluator_1a5a35e9df18a09910460479a7bfdadf7e)
- [Reset](classsimulation__framework_1_1evaluator_1_1MinTtcEvaluator.md#classsimulation__framework_1_1evaluator_1_1MinTtcEvaluator_1aff4c106aeed6de6bb55d3e5c4680e04a)
- [~IKpi](classsimulation__framework_1_1core_1_1kpi_1_1IKpi.md#classsimulation__framework_1_1core_1_1kpi_1_1IKpi_1ab56f1f4f0afe45f82e9c591df22d1377)
- [~MinTtcEvaluator](classsimulation__framework_1_1evaluator_1_1MinTtcEvaluator.md#classsimulation__framework_1_1evaluator_1_1MinTtcEvaluator_1afdb0fa3d5dc75f71132a46cba5bcf912)

## Public functions

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### Function MinTtcEvaluator

![](https://img.shields.io/badge/-public-brightgreen "public")

```cpp
simulation_framework::evaluator::MinTtcEvaluator::MinTtcEvaluator(const std::string &kpi_name="min_ttc")

```

**Parameters**:

- const std::string &amp; **kpi\_name** = "min\_ttc"

**Return type**:

<a id="classsimulation__framework_1_1evaluator_1_1MinTtcEvaluator_1afdb0fa3d5dc75f71132a46cba5bcf912"></a>

### Function ~MinTtcEvaluator

![](https://img.shields.io/badge/-public-brightgreen "public")

```cpp
simulation_framework::evaluator::MinTtcEvaluator::~MinTtcEvaluator()=default

```

**Return type**:

<a id="classsimulation__framework_1_1evaluator_1_1MinTtcEvaluator_1a1c317953b082649c8134c3c79cec5160"></a>

### Function Init

![](https://img.shields.io/badge/-public-brightgreen "public")

```cpp
void simulation_framework::evaluator::MinTtcEvaluator::Init() override

```

Initializes the KPI logic.

Sets up any necessary state or resources required for KPI calculation.

**Return type**: void

**Reimplements**: [Init](classsimulation__framework_1_1core_1_1kpi_1_1IKpi.md#classsimulation__framework_1_1core_1_1kpi_1_1IKpi_1affa38e79e2d2fe57ac913fa736437fae)

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### Function Reset

![](https://img.shields.io/badge/-public-brightgreen "public")

```cpp
void simulation_framework::evaluator::MinTtcEvaluator::Reset() override

```

Resets the KPI logic.

Clears temporary data and prepares the KPI logic for a new calculation, especially if the simulation needs to be restarted.

**Return type**: void

**Reimplements**: [Reset](classsimulation__framework_1_1core_1_1kpi_1_1IKpi.md#classsimulation__framework_1_1core_1_1kpi_1_1IKpi_1ad08cdb1d1091c84920a9733a81c752a5)

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### Function CalculateKpi

![](https://img.shields.io/badge/-public-brightgreen "public")

```cpp
core::kpi::KpiContent simulation_framework::evaluator::MinTtcEvaluator::CalculateKpi(const osi3::GroundTruth &ground_truth) override

```

Executes the core KPI calculation logic.

**Parameters**:

- **input**: The input data required for KPI calculation.

**Returns**:

The calculated KPI content as a `KpiContent` object.

**Parameters**:

- const osi3::GroundTruth &amp; **input**

**Return type**: [core::kpi::KpiContent](structsimulation__framework_1_1core_1_1kpi_1_1KpiContent.md#structsimulation__framework_1_1core_1_1kpi_1_1KpiContent)

**Reimplements**: [CalculateKpi](classsimulation__framework_1_1core_1_1kpi_1_1IKpi.md#classsimulation__framework_1_1core_1_1kpi_1_1IKpi_1a614cb6051405e8865257360eefff9ab6)

<a id="classsimulation__framework_1_1evaluator_1_1MinTtcEvaluator_1af021217919c4e7498c6247dd46947e2c"></a>

### Function GetKpiType

![](https://img.shields.io/badge/-public-brightgreen "public")![](https://img.shields.io/badge/-const-lightblue "const")

```cpp
core::kpi::Type simulation_framework::evaluator::MinTtcEvaluator::GetKpiType() const override

```

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.

**Returns**:

The type of the KPI as a `kpi::Type` enum value.

**Return type**: core::kpi::Type

**Reimplements**: [GetKpiType](classsimulation__framework_1_1core_1_1kpi_1_1IKpi.md#classsimulation__framework_1_1core_1_1kpi_1_1IKpi_1aeef163c532f5b7b03e685642cb75ccaa)