/// <summary>
///
/// </summary>
/// <param name="eventData"></param>
/// <param name="axisIdx">Vector2の軸を指定</param>
/// <returns></returns>
private IEnumerator FrameProcess(PointerEventData eventData, int axisIdx)
{
var canvasScaler = scrollRect.GetComponentInParent <CanvasScaler>();
// 移動方向（時間が経つと値が変わるので今取得）
var delta = (eventData.delta.normalized)[axisIdx];
float target = float.NaN;
var stepCount = this.stepCount[axisIdx] - 1;
DebugLog("stepCount=" + stepCount);
var stepInterval = 1.0f / stepCount;
var speed = this.speed;
var speed2 = speed * canvasScaler.referencePixelsPerUnit;
speed2 *= speed2;
while (true)
{
var currentPosition = scrollRect.normalizedPosition;
// targetが未設定なら、現在の速度を監視
if (float.IsNaN(target))
{
var velocity = scrollRect.velocity[axisIdx];
velocity /= stepCount;
var currentSpeed = Mathf.Abs(velocity);
if (currentSpeed <= speed2)
{
// 移動方向の、次の区切りを目的地とする。
target = currentPosition[axisIdx];
if (target % stepInterval == 0)
{
// 既に目的地なら終了
break;
}
target = NextTarget(target, delta, stepCount);
DebugLog("snap start " + axisIdx + " delta=" + delta + " target=" + target);
}
}
else
{
currentPosition[axisIdx] = Move(currentPosition[axisIdx], target, stepInterval * (Time.deltaTime * speed));
scrollRect.normalizedPosition = currentPosition;
if (currentPosition[axisIdx] == target)
{
break;
}
}
yield return(new WaitForEndOfFrame());
}
DebugLog("snap end");
}
public static bool CheckScrollRectClickable(ScrollRect target, Func <ScrollRect, bool> condition = null)
{
if (!target.isActiveAndEnabled)
{
return(false);
}
if (EventSystem.current == null)
{
return(false);
}
if (EventSystem.current.enabled == false)
{
return(false);
}
var rect = target.GetComponent <RectTransform>();
var center = rect.position;
var canvas = target.GetComponentInParent <Canvas>();
var pos = RectTransformUtility.WorldToScreenPoint(canvas.worldCamera, center);
var eventDataCurrentPosition = new PointerEventData(EventSystem.current)
{
position = pos
};
var results = new List <RaycastResult>();
EventSystem.current.RaycastAll(eventDataCurrentPosition, results);
var raycastResult = results.Any() && results[0].gameObject.GetComponentInParent <ScrollRect>() == target;
if (raycastResult && condition != null)
{
raycastResult = condition(results[0].gameObject.GetComponentInParent <ScrollRect>());
}
return(raycastResult);
}
