Dimensions

Hello there !

Is there simple anyway to get dimensions shown dynamically on the 3D ?

I’m about to start a new project, where we will enter letters (don’t know how yet), and put 3D big letters onto the 3D floor.
If letters would have been side by side, it would have been easy to calculate total width and create a 3D text or so.
But the user will have the possibility to drag&move each letter, so he can put some a bit in front of another to save space. So i would need :
– get the minimum X value of all 3D object in a list
– get the maximum X value in this list
– show a nice arrow with some text on it.
– align arrow / line with the group of letters.

About the arrow, i guess i can simply create a flat cube at the right size but how to place it alogned with the letters ?

Any idea ? tutorial link would help.

Best regards.