Moving on to the other parameters called ‘Increment’, things get a little more interesting. 1× UV Scroll with U-Speed at 0.1 & V-Speed at 0.2 Multi-frame animation U & V in 2d space are direct relatives of X & Y from 3d space Why U and V? Well, X and Y were already being used to describe the 3d space. We can think of the horizontal direction as the U-direction while the vertical axis is the V-direction. There are names for these 2-dimensional coordinates: UV coordinates or just UVs. The distortions that can occur here are very similar to how various maps of the earth need to be distorted when they are projected in only two dimensions. Notice how big the white top of his hat appears in the image versus how it looks on the 3d chocolate. This image had to be drawn and printed this way in order to wrap around the chocolate and look like Santa. There are lots of analogies for how UV space relates to a 3d model, but the one most people are familiar with is wrapped chocolates: Once you understand UVs, you'll never see candy wrappers the same way again. In order for a 3d model to display a texture on its surface, it must contain information about how that texture should be wrapped around the model. But to understand what those parameters do, it’s important to first understand exactly what UV space is. The UV Scroll component is actually quite simple, as it only has a few parameters to adjust. We will mostly be focusing on one of the components that is part of the Hubs Blender Exporter called UV Scroll. Once you understand how they work, you can come up with all kinds of clever uses in Hubs–you may even invent your own. These sorts of effects are common in video games and we’re going to explain them here. Have you ever wanted to make your textures move across a model? Maybe you wanted some scrolling text? Or maybe you saw some kind of flowing water effect in someone’s Hubs scene and wondered what sorcery made that happen. This tutorial will demystify them so you can be a wizard too. Animated textures in Hubs can seem like magic.
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