> [!abstract] Summary > **VEX hub note** — entry point for VEX in Houdini. Links to learning material (ARTFX Laurent lessons), the AI-generated VEX guideline, a curated list of **LOP VEX snippets**, and the **VOP → VEX** conversion trick. --- # Learn - **ARTFX Laurent lessons** — [LinkToEagle](eagle://folder/M2QEQ8J9TNS1D). # Guideline for AI-VEXing - [[HOUDINI Guideline for AI generated VEX|HOUDINI Guideline for AI generated VEX]] — patterns to follow when prompting an AI to write VEX. # LOP VEX Snippets - [[VEX Assign Material to Instances|Assign Material to Instances]]. - [[VEX Make groups or Materials from Geometry Path|Groups / Materials from Geometry Path]]. - [[VEX Delete last value in path|Delete last value in path]]. - [[VEX Object to world center|Object to world center]]. - [[VEX Delete every point with normal not pointing at the center of the world|Delete points whose normals don't face the world centre]]. - [[VEX Transfer Group to Attribute|Transfer Group to Attribute]]. # VOP to VEX - **Right-click on a VOP** → **See as VEX** — converts your VOP network into the equivalent VEX code. - If a node in VOP is **not connected to the output**, it will **not** be displayed in the generated VEX. --- # 🔗 Related - [[../HOUDINI MOC|HOUDINI MOC]]. - [[../HSCRIPT/Houdini Commonly used Expression|Houdini Commonly used Expressions]] — HScript counterpart. - [[../HSCRIPT/HOUDINI Search and replace|HOUDINI Search and Replace]] — Python+PySide example. - [SideFX docs — VEX reference](https://www.sidefx.com/docs/houdini/vex/index.html).