If you were writing a pool game you could use a PickRaySegment to represent the pool cue and you could pick with BoundingSphere to detecting collisions between the balls.
In pool or pocket billiards there is a cue ball and 15 object balls.
在游泳池或口袋台球有一个主球和15球的对象。
3
Gus stood at the table, toying with a cue stick, his eyes straying lazily over the billiard balls scattered about the table in the array of an unfinished game.