Uploaded April 2021 | Updated September 2026, 2 weeks ago

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✔️ Works in 2020.3 ➕ 2021.1

The Dot Product is a useful vector function which has many uses in shaders and gameplay programming. You can use it to calculate lighting, know when a projectile has reached it's apex, or calculate when a creature sees an object. In this video, I'll show you how to use it in various ways!

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🎬 Previous videos
► All bout SmoothStep: youtu.be/I6HVbfMx2s4

💬 Video transcript
► docs.google.com/document/d/1uezxMS7InQurHF4eoRy7msIWgxDPFzwvbxpfLnqU4GQ/edit?usp=sharing

⏲️ Timestamps:
0:00 Intro
0:13 The math
1:26 Using it in Unity
1:47 Lighting
2:18 Physics
2:41 Field of view
3:13 Wrap up and credits

🎖️ Credits and references:
• MarkGX: Drag a GameObject with the mouse - answers.unity.com/questions/12322/drag-gameobject-with-mouse.html
• Astigmatic: Special Elite font - fontsquirrel.com/fonts/special-elite
• iblendit: Low Poly Rocket - sketchfab.com/3d-models/low-poly-rocket-bd0df781d7db4db3961eddf0da0d3d9a

Music:
Bleeping Demo by Kevin MacLeod
Link: incompetech.filmmusic.io/song/7012-bleeping-demo
License: filmmusic.io/standard-license

#GameDev #IndieDev #Unity