Auto rotate angle

[hungfhp]

How i can setup this option?

[notyekta]

I wrote this code to animate the script. I dont know if it's too expensive to use or not

public enum AnimationType { Static,Yoyo, Restart, Linear};
public AnimationType animationType;

public float animSpeed;
private int dir;
public bool clockwise;

private void Update()
{
    if(animationType != AnimationType.Static)
    {
        AnimationRR();
    }
}

public void ModifyColor(float angle)
{
Rect rect = graphic.rectTransform.rect;
Vector2 dir = UIGradientUtils.RotationDir(angle);

    VertexHelper vh = new VertexHelper();

    if (!m_ignoreRatio)
        dir = UIGradientUtils.CompensateAspectRatio(rect, dir);

    UIGradientUtils.Matrix2x3 localPositionMatrix = UIGradientUtils.LocalPositionMatrix(rect, dir);

    UIVertex vertex = default(UIVertex);
    for (int i = 0; i < vh.currentVertCount; i++)
    {
        vh.PopulateUIVertex(ref vertex, i);
        Vector2 localPosition = localPositionMatrix * vertex.position;
        vertex.color *= Color.Lerp(m_color2, m_color1, localPosition.y);
        vh.SetUIVertex(vertex, i);
    }

    graphic.SetVerticesDirty();
}

public void AnimationRR()
{
    switch (animationType)
    {
        case AnimationType.Yoyo:
            if (dir == 0)
            {
                m_angle = Mathf.MoveTowards(m_angle, -180f, Time.deltaTime * animSpeed);
                if (m_angle < -179)
                {
                    dir = 1;
                }
            }
            else
            {
                m_angle = Mathf.MoveTowards(m_angle, 180f, Time.deltaTime * animSpeed);
                if (m_angle > 179)
                {
                    dir = 0;
                }
            }
            break;
        case AnimationType.Linear:
            if (clockwise)
            {
                m_angle = Mathf.MoveTowards(m_angle, -180f, Time.deltaTime * animSpeed);
                if (m_angle < -179)
                {
                    m_angle = 180f;
                }
            }
            else
            {
                m_angle = Mathf.MoveTowards(m_angle, 180f, Time.deltaTime * animSpeed);
                if (m_angle > 179)
                {
                    m_angle = -180;
                }
            }
            break;
        default:
            //Debug.LogError("Invalid animation type: " + animationType);
            break;
    }

    ModifyColor(m_angle);
}