On the source code, we could solve it. Sometimes, screen param are unset. Sometimes, screen param are set on the same source code. --- ---

---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=315.105…

// ADD: 20200611: // ADD: 20200611: if (screen == nullptr) return;if we allocate screen, we never reallocate it anymore, and we search take out the places all.Setting eye now, is the below.eye = {x=-151.458954 y=151.458954 z=-396.308197 }w…