TLatex type function for 3D particle tracks

ROOT
1

I have a 2d projection of a particle event in a silicon vertex detector in which I’ve managed to label each particle’s track with the track number and the particle id via the TLatex function. But, I also have a 3D option that I would like to label the same way. Unfortunately TLatex is only 2D :frowning: . Does anyone have any suggestions as to a way around this problem?

2

Hi Dominick,

What classes are you using for 3D display primitives?
Where do you visualize it (pad, x3d, opengl)?

Best,
Matevz

3

I was using pad.

4

To be more particular, I visualized using pad. In the TLatex function I called an array of strings of particle id’s, i.e. #gamma, so on, which I set up in a vector so I could loop it over individual particle tracks. For 2D I’m using TPolymarker for the drawing of the tracks and stuff, for 3D I’m using TPolymarker3D.

Thanks,
Dominick

5

There is no TLatex3D like we have TPolymarker3D. One way to do it would be to project an (x,y,z) position onto a (x,y) and call TLatex, one but the text itself will be drawn in the 2D plane (no 3D effect).