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 # Class simulation\_framework::evaluator::PredictiveMinTtcEvaluator

 Last update: 22.04.2026 

![](https://img.shields.io/badge/language-C%2B%2B-blue "C++")![](https://img.shields.io/badge/-public-brightgreen "public")

**Definition**: `autonomy/evaluator/predictive_min_ttc_evaluator/predictive_min_ttc_evaluator.h` (line 31)

class [PredictiveMinTtcEvaluator](classsimulation__framework_1_1evaluator_1_1PredictiveMinTtcEvaluator.md#classsimulation__framework_1_1evaluator_1_1PredictiveMinTtcEvaluator)

Definition of [PredictiveMinTtcEvaluator](classsimulation__framework_1_1evaluator_1_1PredictiveMinTtcEvaluator.md#classsimulation__framework_1_1evaluator_1_1PredictiveMinTtcEvaluator) 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_1PredictiveMinTtcEvaluator.md#classsimulation__framework_1_1evaluator_1_1PredictiveMinTtcEvaluator_1a8778dbbad77b21dec72930729a8f52a7)
- [GetKpiType](classsimulation__framework_1_1evaluator_1_1PredictiveMinTtcEvaluator.md#classsimulation__framework_1_1evaluator_1_1PredictiveMinTtcEvaluator_1afa04796b1e66b16c1f33ee011530cb90)
- [Init](classsimulation__framework_1_1evaluator_1_1PredictiveMinTtcEvaluator.md#classsimulation__framework_1_1evaluator_1_1PredictiveMinTtcEvaluator_1aad25aefd4cb26ff9697c441d39de2deb)
- [PredictiveMinTtcEvaluator](classsimulation__framework_1_1evaluator_1_1PredictiveMinTtcEvaluator.md#classsimulation__framework_1_1evaluator_1_1PredictiveMinTtcEvaluator_1ad053b6beae6e2c424e89c268bc4c8941)
- [Reset](classsimulation__framework_1_1evaluator_1_1PredictiveMinTtcEvaluator.md#classsimulation__framework_1_1evaluator_1_1PredictiveMinTtcEvaluator_1a8f78acf7646d8476fdbbdc931fbc3ffe)
- [~IKpi](classsimulation__framework_1_1core_1_1kpi_1_1IKpi.md#classsimulation__framework_1_1core_1_1kpi_1_1IKpi_1ab56f1f4f0afe45f82e9c591df22d1377)
- [~PredictiveMinTtcEvaluator](classsimulation__framework_1_1evaluator_1_1PredictiveMinTtcEvaluator.md#classsimulation__framework_1_1evaluator_1_1PredictiveMinTtcEvaluator_1af2cfc869b789faf7d46a1ddacf96747d)

## Public functions

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### Function PredictiveMinTtcEvaluator

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

```cpp
simulation_framework::evaluator::PredictiveMinTtcEvaluator::PredictiveMinTtcEvaluator(const std::string &kpi_name="predictive_min_ttc")

```

**Parameters**:

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

**Return type**:

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### Function ~PredictiveMinTtcEvaluator

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

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

```

**Return type**:

<a id="classsimulation__framework_1_1evaluator_1_1PredictiveMinTtcEvaluator_1aad25aefd4cb26ff9697c441d39de2deb"></a>

### Function Init

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

```cpp
void simulation_framework::evaluator::PredictiveMinTtcEvaluator::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::PredictiveMinTtcEvaluator::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::PredictiveMinTtcEvaluator::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)

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### 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::PredictiveMinTtcEvaluator::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)