Raycast or something else ???

does this use raycast or something else ?

 

First off, this isn't the right forum. This probably belongs in General Graphics.

To answer your question, however: you probably mean rayTRACING, not rayCASTING, but it doesn't use raytracing either. If you look closely, you'll notice that the perspective and rotation of the bike never changes. This is because the bike is just a pre-rendered image of a bike. Judging by the distortion on the edges as the camera moves, I'd wager that the background is just a cubemap as well.

There's nothing really interesting or complex going on here. This is actually as simple as it could possibly get.

 

The part i want to know how to make room like in that video and is that possible not to use virtual reality ??

 

Do u know how to make automatically adjust the screen with the mobile phone that is installed apk made on unity??

 

The room is just a textured cube. You don't need VR or anything like that for this.

 

Weird, I didn't see this one.

What you want to do is use this: https://docs.unity3d.com/ScriptReference/ScreenOrientation.AutoRotation.html