---
We inspect drawing the box, by use of Debugger.
The reason, we don't display, is different.
We ensured the below memorization:
---
eye = {x=-252.431595 y=252.431595 z=-660.513672 }
1: ll_2D = 0x00ae7178 {p1=0x00ae3da8 {x=144.246140 y=315.105194 z=0.000000000 } p2=0x00ae31d8 {x=139.932037 y=301.586670 ...} ...}
p1 = 0x00ae3da8 {x=144.246140 y=315.105194 z=0.000000000 }
p2 = 0x00ae31d8 {x=139.932037 y=301.586670 z=0.000000000 }
---
3D calculation is right at least.
---
