/// <summary>
/// 进入截图模式
/// </summary>
public void SwitchOn(bool isFullScreen)
{
if (isFullScreen)
{
_defaultCaptureType = CaptureType.FullScreen;
_bgRawImage.gameObject.SetActive(false);
_bgRawImage.material.SetVector("_Rect", new Vector4(0, 0, 1, 1));
_leftDownConnerPoint = Vector2.zero;
_leftUpConnerPoint = new Vector2(0, _screenHeight);
_rightUpConnerPoint = new Vector2(_screenWidth, _screenHeight);
_rightDownConnerPoint = new Vector2(_screenWidth, 0);
_drawRegionRect = true;
_haveCirmformRectStarPoint = true;
_haveRegion = true;
_lastPoint = Vector2.zero;
//涂鸦选项UI初始化
FinishedRegionEvent.Invoke();
}
else
{
_defaultCaptureType = CaptureType.FreeRegion;
_bgRawImage.gameObject.SetActive(true);
_bgRawImage.material.SetVector("_Rect", new Vector4(0, 0, 0, 0));
}
_paintCanvasImg.gameObject.SetActive(true);
_enterCaptureModeEvent.Invoke();
_enabled = true;
}
void Update()
{
if (_enabled)
{
switch (_defaultCaptureType)
{
case CaptureType.FullScreen:
break;
case CaptureType.FreeRegion:
//已经选了区域，可以开始涂鸦了
if (_haveRegion)
{
//如果按下右键，表示重新选择区域,清除掉之前的记录
if (Input.GetMouseButtonUp(1))
{
_defaultCaptureType = CaptureType.FreeRegion;
_haveRegion = false;
_haveCirmformRectStarPoint = false;
_startPoint = Vector2.zero;
_endPoint = Vector2.zero;
_drawRegionRect = false;
_leftUpConnerPoint = Vector2.zero;
_leftDownConnerPoint = Vector2.zero;
_rightUpConnerPoint = Vector2.zero;
_rightDownConnerPoint = Vector2.zero;
_blitRenderTexture.Release();
_bgRawImage.material.SetVector("_Rect", new Vector4(0, 0, 0, 0));
_eraserFlag = false;
//Graphics.Blit(_blitRenderTexture, _blitRenderTexture, _clearBrushMat); //清除一下
CannelRegionEvent.Invoke();
return;
}
//涂鸦的侦听逻辑
}
//未选择区域，要先选区域
else
{
//switch (_defaultCaptureType)
//{
// case CaptureType.FullScreen:
// break;
// case CaptureType.FreeRegion:
// //如果没有点下选择起点
if (!_haveCirmformRectStarPoint)
{
if (Input.GetMouseButtonDown(0))
{
//超出屏幕外
if (Input.mousePosition.x < 0 || Input.mousePosition.x > Screen.width ||
Input.mousePosition.y < 0 || Input.mousePosition.y > Screen.height)
{
return;
}
_startPoint = Input.mousePosition;
_haveCirmformRectStarPoint = true;
}
}
//如果选下了起点，刷新鼠标位置
else
{
_drawRegionRect = true;
if (Input.GetMouseButton(0))
{
_endPoint = Input.mousePosition;
//限制坐标在屏幕内
_endPoint.x = Mathf.Clamp(_endPoint.x, 0f, Screen.width);
_endPoint.y = Mathf.Clamp(_endPoint.y, 0f, Screen.height);
//设置灰化区域
Vector4 rect = new Vector4(Mathf.Min(_startPoint.x, _endPoint.x) / Screen.width,
Mathf.Min(_startPoint.y, _endPoint.y) / Screen.height,
Mathf.Max(_startPoint.x, _endPoint.x) / Screen.width,
Mathf.Max(_startPoint.y, _endPoint.y) / Screen.height);
_bgRawImage.material.SetVector("_Rect", rect);
}
//鼠标抬起，截图框选区域确定
if (Input.GetMouseButtonUp(0))
{
_endPoint = Input.mousePosition;
//限制坐标在屏幕内
_endPoint.x = Mathf.Clamp(_endPoint.x, 0f, Screen.width);
_endPoint.y = Mathf.Clamp(_endPoint.y, 0f, Screen.height);
_haveRegion = true;
_leftUpConnerPoint = GetCaptureViewLeftUpConnerPoint();
_rightUpConnerPoint = GetCaptureViewRightUpConnerPoint();
_rightDownConnerPoint = GetCaptureViewRightDownConnerPoint();
_leftDownConnerPoint = GetCaptureViewLeftDownConnerPoint();
FinishedRegionEvent.Invoke();
}
}
// break;
// default:
// throw new ArgumentOutOfRangeException();
//}
}
////侦听截图事件
//if (Input.GetKeyUp(KeyCode.Space))
//{
// _CaptureFlag = true;
//}
//全屏截图
if (Input.GetKeyUp(KeyCode.F) && _defaultCaptureType == CaptureType.FreeRegion && !_haveRegion)
{
_defaultCaptureType = CaptureType.FullScreen;
_leftDownConnerPoint = Vector2.zero;
_leftUpConnerPoint = new Vector2(0, _screenHeight);
_rightUpConnerPoint = new Vector2(_screenWidth, _screenHeight);
_rightDownConnerPoint = new Vector2(_screenWidth, 0);
_drawRegionRect = true;
_haveCirmformRectStarPoint = true;
_haveRegion = true;
_bgRawImage.gameObject.SetActive(false);
_bgRawImage.material.SetVector("_Rect", new Vector4(0, 0, 1, 1));
//涂鸦选项UI初始化
FinishedRegionEvent.Invoke();
}
break;
default:
break;
}
_eraserModeUpdateEvent.Invoke(_eraserFlag);
//退出截图
if (Input.GetKeyUp(KeyCode.Escape))
{
ResetData();
_enabled = false;
_escapeCaptureEvent.Invoke();
return;
}
}
}