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In this tutorial series you will learn how to add the logic necessary to squash and stretch any mesh using APEX Script. The tutorial series is step by step, with no time lapses or missing content, ensuring that every step along the way is fully narrated and described to maximize your ability to understand the content presented.
In Houdini 20.5, SideEffects have introduced us to a brand new API that can drive their new APEX framework, called APEX Script. This new scripting language is based largely on Python, making some specific extensions and adding some new features to make working inside Houdini more fit for purpose. This new API is in beta, and although the existing documentation is fairly accurate, there just isn't enough of it. Learning this promising new framework requires some creativity, experimentation, and patience. But I wanted to share an approach I've found works quite well, leveraging the power of Sublime, the LSP / LSP-Pyright packages, and of course Houdini.
In this video, I show you the result of what the rest of the videos in this tutorials series is going to leave you with.
In this video I take a step by step approach to creating a very basic mesh, skeleton, and guide skeleton that we will then use as we build out the logic required to squash and stretch the geometry.
In this video in my "Learn APEX Scripting" playlist, I laydown the first APEX Autorig Component nodes in order to ready ourselves for the code we're about to right.
In this video I show the importance and the mechanics of using tags in order to build up APEX Script logic that can be used in any rig.
In this video I show how to discover the APEX Script APIs through a combination of using Sublime's LSP assisted autocomplete and the use of the APEX Script nodes decompile feature.
In this video I add our new function that will house the squash and stretch functionality, and establish some debugging tools to visualize our future logic.
In this video I just take a second to describe ( through brilliant artistic artistry :) ) the "why" behind the logic we're about to get into.
In this video I show you how to connect the top and bottom TransformObjects to our subNet via APEX Script.
In this video I show how to establish the correct position of our debug and look at joint.
In this video, I code up the logic that will build up our matrix that controls the orientation of our mesh.
In this video we finish up the final matrix that establishes the proper orientation for our deform bone in our skeleton.
In this video I demonstrate how manipulating the scale values of the xyz scale parameters on our geometry drives the squash and stretch feature.
In this video I declare and connect the final set of parameters that we need to perform the proper scaling for our squash and stretch effect.
In this video I finish up with the squash and stretch functionality of our rig. Mission accomplished! :)
In this video I summarize why manipulating APEX graphs via code is so effective, and show how you can save out your new logic either in geometry ( bgeo files ) or text files that can be version controlled.
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COMMENTS
nikolaibalashov71 3 months ago |
wow!!!!!!!!!!!!!!!!!!!!!!!! awesome
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