ThreeJS:如何检测对象是否呈现/可见 [英] ThreeJS: How to detect if an object is rendered/visible

问题描述

如何尽可能快地检测到相机的眼睛是否可以看到 Threejs 对象?obj.visible 属性是一个 setter，所以没有用.此外，frustumCullum 还不够，因为它仅指示对象是否在相机视口之外.我需要知道一个物体是否隐藏在另一个更大的物体后面.

How can I detect, as fast as possible, if a threejs object is visible for the eyes of the camera? The obj.visible attribute is a setter, so not useful. Also frustumCullum is not enough, as it only indicates if an object is out of the camera viewport. I need to know if an object is hidden behind another much larger object.

有人有想法吗?

干杯

马库斯

推荐答案

也许你可以使用 THREE.Raycaster()?

Maybe you could use THREE.Raycaster()?

var intersects = raycaster.intersectObjects( objects );
if ( intersects.length > 0 ) {
    // find the object by name? intersects[0].
    // Hidden if index > 0
}

这篇关于ThreeJS:如何检测对象是否呈现/可见的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！