Laser system in Geometry nodes - Blender tutorial ENG

A full laser system to emit lights and let them bounce everywhere. Lots of features inside this geometry nodes setup, all made with Blender v. 4.5.0, enjoy it all! 📥 Get it on Gumroad: https://andreaciani85.gumroad.com/l/lasersystem ▶️ Trick to avoid auto collision: https://youtu.be/U-Pyg-n42CI?si=VFFdZTaKtRbBPByn&t=2130 ▶️ Even radius group node: https://www.youtube.com/watch?v=3OSPdpVZ76E ▶️ Fix UVmap: https://www.youtube.com/watch?v=t1WDulM7wBU ▶️ Cross product: https://youtu.be/3OSPdpVZ76E?si=isCNvzbQhMDIFDZu&t=1552 00:46 Laser concept 02:40 Points and vertices 03:50 Initial states 04:51 Sort & extrude vertices 10:42 Surface hit 18:44 Store direction for the next iteration 23:31 Bounces with repeat zone 25:19 Add some surfaces for tests 25:34 Fix position for the next extrusion 29:14 Visible mesh with UV map 35:16 Emit switch 33:40 Show source mesh switch 34:35 Lasers trim animation 37:07 Multiple rays 38:36 Spread rays in 2D 47:09 Spread rays in 3D 53:30 Custom rotation 54:30 Tests 55:01 Emission from vertices 1:02:22 Emission from edges 1:02:56 Emission from faces 1:03:47 Random emission from a mesh 1:07:05 Lasers curve shape emission 1:19:46 Last tweaks 1:21:29 Outro 💬 Discord: https://discord.gg/864xu56dbX 🎹 Background song: Lucy - https://www.reverbnation.com/andreaciani/song/29090417-lucy 🎹 Check my songs page: https://www.reverbnation.com/andreaciani 🎹 Spotify page: https://open.spotify.com/artist/7fTYzX6aa9QF28znk2fvrX