---
id: "M:cAlgo.API.Polygon.#ctor"
kind: "constructor"
type: "T:cAlgo.API.Polygon"
url: "https://help.ctrader.com/ctrader-algo/references/Controls/Layout/Shapes/Polygon/Constructor/"
---

> Documentation index for agents: https://help.ctrader.com/ctrader-algo/llms.txt · machine index: https://help.ctrader.com/ctrader-algo/api.json

# Polygon constructor

Member of [Polygon](https://help.ctrader.com/ctrader-algo/references/Controls/Layout/Shapes/Polygon/index.md).

## Polygon()

Initializes a new instance of the [`Polygon`](https://help.ctrader.com/ctrader-algo/references/Controls/Layout/Shapes/Polygon/index.md) class.

Environments: Desktop supported · CLI not supported · Cloud not supported.

- CLI: Accepted without error but never displayed, so control events such as Click are never raised.
- Cloud: Accepted without error but never displayed, so control events such as Click are never raised.

C#:

```csharp
public Polygon()
```

Python:

```python
Polygon()
```

### Examples

C#:

```csharp
var polygon = new Polygon { FillColor = Color.SteelBlue, StrokeColor = Color.White };
polygon.Points = new[] { new Point(0, 0), new Point(100, 0), new Point(50, 80) };
Chart.AddControl(polygon);
```

Python:

```python
polygon = Polygon()
polygon.FillColor = Color.SteelBlue
polygon.StrokeColor = Color.White
polygon.Points = [Point(0, 0), Point(100, 0), Point(50, 80)]
api.Chart.AddControl(polygon)
```