They can be used for collision detection or avoidance.

它们可以被用在碰撞检测或规避上。

youdao

A triangle selector is a class which can fetch the triangles from scene nodes for doing different things with them, for example collision detection.

这是一个类，你可以用它来从场景结点中拾取三角形，以用作各种不同的用途，比如碰撞检测。

youdao

The second parameter is the scene node, which is the object, which is affected by collision detection, in our case it is the camera.

第二个参数是场景结点，指定受碰撞检测影响的对象，在我们的例子中就是相机。

youdao

The specification won't include collision detection, for instance, because 10-Gigabit won't be running half-duplex.

CNN: 10-Gig Ethernet gets a voice

Holladay, meanwhile, turns collision detection on its head to funnel an object into place, such as balancing a delicate object with a free arm before setting that object down.

ENGADGET: MIT algorithms teach robot arms to think outside of the box (video)

Motorbike collision detection systems developed by Mira warn a rider about an imminent impact and let them take action by slowing down sharply or, in the case of a vehicle travelling in the same direction as the bike, following it while slowing.

BBC: Motorbikes 'to get safe driving aids'