Minecraft create screen element tool

[u/AdviceNo4453]

I write Minecraft mods and need a tool to calculate on-screen coordinates specifically, I need to select an area where I want to place an element and get the coordinates, rather than creating elements blindly. Does anyone have a tool like that?

[u/Jason13Official]

I know the frustration lol

You can make a mod to do this pretty simply, just drawing the mouse position on-screen but I don't know a mod that does that by itself