qtvismach, a axis toolpath

I made a small modification to the code and now it works properly.
 

I was hoping that the toolpath would be visible inside the solid, but this is not the case...


 

Interesting, the tool seems to be cut off too.

May have something to do with 'depth testing' as seen in this image where some of the background scene is not visible through the red tinted glass:

 

The above image comes from this article which may be useful:
drennonowereve.blogspot.com/2022/03/how-...color-in-opengl.html

[edit]
Just noticed the spelling in the article is a tad strange.

I just used this article today.

I positioned the two pieces for the test behind the workpiece and only the actual head and countertop are visible.
I don't know much about opengl, I guess it can be configured somehow...
 

Maybe the order of the parts can do it.
I see you can see the base and chuck through the material but not the column or other chuck.

probably there is a opengl command to directly set Zdepth but like you i know just enough to get it to mostly work

I will leave the topic of transparency for later, I have an idea how to solve it differently.
Please tell me how to easily read the x and y movement values from the "setup/properties" tab? I need these values to automatically generate the dimensions of the workpiece in the A-axis holder.

The second problem is the disappearing tool path in qtvismach. The same thing happens as in the preview window in qtdragon. A longer toolpath history is needed, or it doesn't disappear at all.