U3D 如何計(jì)算一個(gè)UI四個(gè)角的絕對坐標(biāo)

? //方式一，使用API獲取var rtrans = gameObject.GetComponent<RectTransform>();Vector3[] worldcorners = new Vector3[4];rtrans.GetWorldCorners(worldcorners);//方式二，手動(dòng)計(jì)算var cam = GameObject.Find("Camera").GetComponent<Camera>();var cam_h = 2 * cam.orthographicSize;var cam_w = cam_h * Screen.width / Screen.height;var canvasObj = GameObject.Find("Canvas");var canvas = canvasObj.GetComponent<Canvas>();var canvasScaler = canvasObj.GetComponent<CanvasScaler>();float screen_w = Screen.width;float screen_h = Screen.height;var pos = transform.position;var fw = rtrans.rect.width;var fh = rtrans.rect.height;if (canvasScaler.uiScaleMode == CanvasScaler.ScaleMode.ScaleWithScreenSize){screen_w = canvasScaler.referenceResolution.x;screen_h = screen_w * Screen.height / Screen.width;}if (canvas.renderMode == RenderMode.ScreenSpaceCamera){fw = rtrans.rect.width / screen_w * cam_w;fh = rtrans.rect.height / screen_h * cam_h;}float[] wcs = new float[4];var c1 = pos.x - fw / 2;var c2 = pos.x + fw / 2;var c3 = pos.y - fh / 2;var c4 = pos.y + fh / 2;//兩種試計(jì)算得到的結(jié)果完全一樣

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posted on 2017-06-26 17:33 時(shí)空觀察者9號(hào) 閱讀(...) 評(píng)論(...) 編輯 收藏

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