我正在运行一个进程,只有在视口中可见或部分可见的图像与之相关。以下代码有效,如果 img 的任何部分在屏幕上,则返回 true。但是有没有更简洁的方式来表达同样的逻辑呢?
//Can't figure out an easier way to do this!
return (imgLeft>=winData.l && imgLeft<winData.r && imgTop>=winData.t && imgTop<winData.b) || //TL somewhere on screen
(imgRight>=winData.l && imgRight<winData.r && imgTop>=winData.t && imgTop<winData.b) || //TR somewhere on screen
(imgLeft>=winData.l && imgLeft<winData.r && imgBottom>=winData.t && imgBottom<winData.b) || //BL somewhere on screen
(imgRight>=winData.l && imgRight<winData.r && imgBottom>=winData.t && imgBottom<winData.b) || //BR somewhere on screen
(imgLeft<winData.l && imgRight>winData.r && imgTop>=winData.t && imgTop<winData.b) || //L offscreen L and R offscreen R, top on screen
(imgLeft<winData.l && imgRight>winData.r && imgBottom>=winData.t && imgBottom<winData.b) || //L offscreen L and R offscreen R, bottom on screen
(imgTop<winData.t && imgBottom>winData.b && imgLeft>=winData.l && imgLeft<winData.r) || //T offscreen T and B offscreen B, left on screen
(imgTop<winData.t && imgBottom>winData.b && imgRight>=winData.l && imgRight<winData.r) || //T offscreen T and B offscreen B, right on screen
(imgLeft<winData.l && imgRight>winData.r && imgTop<winData.t && imgBottom>winData.b) //All sides offscreen