Rúhé cèliáng diǎn yǔ diǎn huò diǎn yǔ miàn zhī jiān de jùlí lìrú:Handle(AIS_Shape) aBox = new AIS_Shape("zhèngfāngtǐ") wǒ rúhé z

For example: Handle(AIS_Shape) aBox = new AIS_Shape("cube")
How can I select two points on the side of this cube and display the distance between them