> For the complete documentation index, see [llms.txt](https://docs.optitrack.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.optitrack.com/v2.3/developer-tools/camera-sdk/camera-sdk-classes/class-ccameragroupmarkersizesettings.md).

# Class: cCameraGroupMarkerSizeSettings

This class contains size properties of reconstructed 3D markers. The size of reconstructed marker is defined by its diameter (in mm), and an instance of this class can be assigned to a camera group. Use the [TT\_CameraGroupMarkerSize](/v2.3/developer-tools/motive-api/motive-api-function-reference.md#tt_cameragroupmarkersize) and [TT\_SetCameraGroupMarkerSize](/v2.3/developer-tools/motive-api/motive-api-function-reference.md#tt_setcameragroupmarkersize) Motive API functions for obtaining and assigning an instance of this class.

* MarkerSizeCalculated: This marker size type will calculate suitable diameter of a marker to be displayed.
* MarkerSizeFixed: This marker size type will override calculated diameter and assign a set diameter.
* MarkerSizeCount: Returns number of marker size types.

### Declaration: cCameraGroupMarkerSizeSettings

```
class TTAPI cCameraGroupMarkerSizeSettings
{
public:
    cCameraGroupMarkerSizeSettings();
    ~cCameraGroupMarkerSizeSettings();

    enum eMarkerSizeType
    {
        MarkerSizeCalculated,
        MarkerSizeFixed,
        MarkerSizeCount
    };

    eMarkerSizeType  MarkerSizeType;
    float            MarkerSize;
};
```


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