SceneViewCameraWindow.additionalSettingsGui

Подпишитесь на это событие, чтобы получать обратный вызов при вызове функции SceneViewCameraWindow.OnGUI.

using UnityEditor;
using UnityEngine;

[InitializeOnLoad]
static class AdditionalCameraSettings
{
    static AdditionalCameraSettings()
    {
        SceneViewCameraWindow.additionalSettingsGui += DoAdditionalCameraSettings;
    }

    static void DoAdditionalCameraSettings(SceneView sceneView)
    {
        GUILayout.Label("Additional Settings", EditorStyles.boldLabel);

        float easing = sceneView.cameraSettings.easingDuration;

        EditorGUI.BeginChangeCheck();

        easing = EditorGUILayout.Slider("Easing Duration", easing, 0.001f, 1f);

        if (EditorGUI.EndChangeCheck())
            sceneView.cameraSettings.easingDuration = easing;
    }
}