UGUI
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using UnityEngine;
using UnityEngine.EventSystems;
using UnityEngine.UI;
[RequireComponent(typeof(Image))]
public class DragMe : MonoBehaviour, IBeginDragHandler, IDragHandler, IEndDragHandler
{
public bool dragOnSurfaces = true;
private GameObject m_DraggingIcon;
private RectTransform m_DraggingPlane;
public void OnBeginDrag(PointerEventData eventData)
{
var canvas = FindInParents<Canvas>(gameObject);
if (canvas == null)
return;
// We have clicked something that can be dragged.
// What we want to do is create an icon for this.
m_DraggingIcon = new GameObject("icon");
m_DraggingIcon.transform.SetParent (canvas.transform, false);
m_DraggingIcon.transform.SetAsLastSibling();
var image = m_DraggingIcon.AddComponent<Image>();
// The icon will be under the cursor.
// We want it to be ignored by the event system.
CanvasGroup group = m_DraggingIcon.AddComponent<CanvasGroup>();
group.blocksRaycasts = false;
image.sprite = GetComponent<Image>().sprite;
image.SetNativeSize();
if (dragOnSurfaces)
m_DraggingPlane = transform as RectTransform;
else
m_DraggingPlane = canvas.transform as RectTransform;
SetDraggedPosition(eventData);
}
public void OnDrag(PointerEventData data)
{
if (m_DraggingIcon != null)
SetDraggedPosition(data);
}
private void SetDraggedPosition(PointerEventData data)
{
if (dragOnSurfaces && data.pointerEnter != null && data.pointerEnter.transform as RectTransform != null)
m_DraggingPlane = data.pointerEnter.transform as RectTransform;
var rt = m_DraggingIcon.GetComponent<RectTransform>();
Vector3 globalMousePos;
if (RectTransformUtility.ScreenPointToWorldPointInRectangle(m_DraggingPlane, data.position, data.pressEventCamera, out globalMousePos))
{
rt.position = globalMousePos;
rt.rotation = m_DraggingPlane.rotation;
}
}
public void OnEndDrag(PointerEventData eventData)
{
if (m_DraggingIcon != null)
Destroy(m_DraggingIcon);
}
static public T FindInParents<T>(GameObject go) where T : Component
{
if (go == null) return null;
var comp = go.GetComponent<T>();
if (comp != null)
return comp;
Transform t = go.transform.parent;
while (t != null && comp == null)
{
comp = t.gameObject.GetComponent<T>();
t = t.parent;
}
return comp;
}
}
using UnityEngine;
public class TiltWindow : MonoBehaviour
{
public Vector2 range = new Vector2(5f, 3f);
Transform mTrans;
Quaternion mStart;
Vector2 mRot = Vector2.zero;
void Start ()
{
mTrans = transform;
mStart = mTrans.localRotation;
}
void Update ()
{
Vector3 pos = Input.mousePosition;
float halfWidth = Screen.width * 0.5f;
float halfHeight = Screen.height * 0.5f;
float x = Mathf.Clamp((pos.x - halfWidth) / halfWidth, -1f, 1f);
float y = Mathf.Clamp((pos.y - halfHeight) / halfHeight, -1f, 1f);
mRot = Vector2.Lerp(mRot, new Vector2(x, y), Time.deltaTime * 5f);
mTrans.localRotation = mStart * Quaternion.Euler(-mRot.y * range.y, mRot.x * range.x, 0f);
}
}
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