![]() ![]() ![]() They will remind you of exactly what you were working on and where to restart. Notes are also great if you know that you won’t be working in that file for a long time. Or even remind you of errors that you encountered. Notes are useful because they allow you to label certain sections of code. So if you are creating a slider in VEX, you need to decide if your slider should display whole numbers, or ones that can be processed as a fraction. This is because floats allow you to give your value an extra decimal place. ![]() Step #5: Floats or integers? Which one should you use? When you define something as a float it gives something more presion. Then if there are any issues setting up your variables, then you’ll be able to catch them earlier and isolate them. For example, if you could use one wrangle to set up your variables and attributes to call. Sometimes breaking apart your code, and using separate wrangles can help you stay organized. Step #4: Dealing with large amounts of code? Use multiple wrangles. This in turn changes the purpose of the if statement. Sometimes, I find that I’ve accidentally typed for instead of if. In this step, look for any missing semicolons. If they are missing, the code won’t work. ![]() In VEX, semicolons are used at the end of every statement. So in the first read through of your code, look for missing brackets. Sometimes if you are dealing with multiple if statements, large amounts of code, or for each loop, you can forget to add an extra bracket. When something goes wrong in my code, I find that the best way to find the issues is doing a general scan of the script for one problem at a time. Now after that whole spiel, here are some tips for VEX. Along with the fact that you are also scripting something for a specific context. Because VEX code is localized to a single operator, and has a very direct methodology listed, it is a bit more efficient. VEX on average runs faster than SOPs as well. So learning one always helps you in more than one way. Once you start coding you can never go back.) Many coding languages overlap in how they handle variables, and statements. VEX is also a gateway drug into other coding languages such as Hscript and Python. These noise commands in VEX are used to help create the Attribute Noise SOP. For Example, with VEX you can call noise libraries to create noise patterns. But really at the base of it all, someone had to code them to exist. A lot of nodes are built with a series of VOPs, VEX, and other nodes. Most of the SOPs and other nodes in the software, you can unlock, and dive inside. Mastering VEX is also a great way to start learning about what is going on under the hood of the software. It is a general purpose language for writing custom shaders and nodes. Sidefx is truly doing a great job of streamlining simulation tools, but sometimes there isn’t a preset for everything. SOPs are great for quickly generating presets, generating attributes quickly, and now they are leaning towards simulations. It can be much faster to write 3 lines of code vs playing with a SOP for an hour to get something right. VEX and python also get pretty unavoidable in the later years of your Houdini/FX career. Why use VEX when Sidefx is building all these amazing SOPs? Well sometimes the best way to customize something is through VEX. ![]()
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