This video shows the solution to the most complex portal riddle: "What will happen if we put one portal into another?". I explained how this works and how I coded this.

Chapters:

0:00 Intro
0:23 Formulating the problem
0:44 About portal movement (simple portal paradox)
3:24 Two portal pairs
4:43 Why portal must have the same shape on input and output
5:52 Why split portal looks continuous
6:47 How to split portal will teleport object
7:45 Why two portal pairs scene is important
8:10 Common information about the "portal in portal"
8:36 What if look inside "portal in portal"
8:54 What if put object into "portal in portal"
9:36 Teleportation degrees
10:53 Rotating portal in portal animation
11:12 Base of the discrete approach
12:24 Solution of "portal in portal" by discrete approach
15:04 Base of the analytical approach
18:49 Solution of "portal in portal" by the analytical approach
20:38 What if move next, ignoring limitations
21:36 About my program
22:45 Base of the program (Rust, egui, macroquad, WASM)
23:32 Conclusion

Links:
[1]    • What happend to portal on moving surf...   moving portal gameplay
[2]    • The Portal Paradox   minutephysics video
[3]    • This happens when you put one portal ...   my previous video
[4] https://raytracing.github.io/ Ray Tracing in One Weekend
[5] https://optozorax.github.io/portal my program in the browser (don't run from your phone, this program has very heavy shaders, it may lay down your phone or weak computer)
[6] https://www.rustlang.org/ Rust programming language
[7] https://github.com/emilk/egui "egui" library
[8] https://github.com/notfl3/macroquad "macroquad" library
[9] https://github.com/optozorax/portal source code of my program
[10] https://t.me/optozorax_dev'>https://t.me/optozorax_dev my telegram channel

Places where I wrote:
Telegram https://t.me/optozorax_dev'>https://t.me/optozorax_dev
Twitter   / optozorax  

If you found subtitles mistake or anywhere else, please DM me on Telegram or Twitter.