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文件名称: UGUI官方Demo
  所属分类: 网络游戏
  开发工具:
  文件大小: 9mb
  下载次数: 0
  上传时间: 2016-02-22
  提 供 者: u0113*****
 详细说明： Unity4.6 Samples UI 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(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(); // The icon will be under the cursor. // We want it to be ignored by the event system. CanvasGroup group = m_DraggingIcon.AddComponent(); group.blocksRaycasts = false; image.sprite = GetComponent().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(); 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(GameObject go) where T : Component { if (go == null) return null; var comp = go.GetComponent(); if (comp != null) return comp; Transform t = go.transform.parent; while (t != null && comp == null) { comp = t.gameObject.GetComponent(); t = t.parent; } return comp; } } ...展开收缩
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