【m】

Assets/UI/Scripts/UIFramework/Runtime/Tweening/Tweening/TweenHeight.cs

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+using UnityEngine;
+
+/// <summary>
+/// Tween the widget's size.
+/// </summary>
+
+[RequireComponent(typeof(RectTransform))]
+[AddComponentMenu("Tween/Tween Height")]
+public class TweenHeight : UITweener
+{
+	public float from = 100;
+	public float to = 100;
+
+	[Tooltip("If set, 'from' value will be set to match the specified rectangle")]
+	public RectTransform fromTarget;
+
+	[Tooltip("If set, 'to' value will be set to match the specified rectangle")]
+	public RectTransform toTarget;
+
+	RectTransform mWidget;
+
+	public RectTransform cachedWidget { get { if (mWidget == null) mWidget = GetComponent<RectTransform>(); return mWidget; } }
+
+	[System.Obsolete("Use 'value' instead")]
+	public float height { get { return this.value; } set { this.value = value; } }
+
+	/// <summary>
+	/// Tween's current value.
+	/// </summary>
+
+	public float value { get { return cachedWidget.rect.height; } set { cachedWidget.SetSizeWithCurrentAnchors(RectTransform.Axis.Vertical, value); } }
+
+	/// <summary>
+	/// Tween the value.
+	/// </summary>
+
+	protected override void OnUpdate (float factor, bool isFinished)
+	{
+		if (fromTarget) from = fromTarget.rect.width;
+		if (toTarget) to = toTarget.rect.width;
+
+		value = Mathf.RoundToInt(from * (1f - factor) + to * factor);
+	}
+
+	/// <summary>
+	/// Start the tweening operation.
+	/// </summary>
+
+	static public TweenHeight Begin (RectTransform widget, float duration, int height)
+	{
+		TweenHeight comp = UITweener.Begin<TweenHeight>(widget.gameObject, duration);
+		comp.from = widget.rect.height;
+		comp.to = height;
+
+		if (duration <= 0f)
+		{
+			comp.Sample(1f, true);
+			comp.enabled = false;
+		}
+		return comp;
+	}
+
+	[ContextMenu("Set 'From' to current value")]
+	public override void SetStartToCurrentValue () { from = value; }
+
+	[ContextMenu("Set 'To' to current value")]
+	public override void SetEndToCurrentValue () { to = value; }
+
+	[ContextMenu("Assume value of 'From'")]
+	void SetCurrentValueToStart () { value = from; }
+
+	[ContextMenu("Assume value of 'To'")]
+	void SetCurrentValueToEnd () { value = to; }
+}