set one figure to be always in front of the camera

hi guys! sry for my bad english…
my question: is it possible to draw a figure which is every time in front of the camera? e.g a croshair or a triangle. so if i look around or move in the “space” :smiley: this figure should be every time in the middle of the window… thank you very much!!!

Yeah! The idea is to keep the vertices of the ‘figure’ relative to the camera coordinates fixed.

Just draw it without any model-view transformation.