Join Henry Santos for an in-depth discussion in this video Channel hauling, part of MODO Essential Training.
- [Instructor] So if you're following along in the previous video, you notice that we now have all the different controls for the different hands of this clock. So let's go ahead and click on that orange one and hit the rotate tool. There we go. So in a useful rig, these are all organized, labeled correctly, color coordinated.
Now another thing that is really useful for animators, and we would set this up in the setup tab or when we're rigging our character, or item, or clock, or device, whatever it is, there's an onscreen popup that gives us the ability to select and modify our different channels and different controls. So let's say we wanna move the second hand and we could do that, and if we wanted to change it numerically, we would go to the properties panel and look under Z rotation.
So rotation Z, it's set to 8.8. We can manually type it in or click on these transform value handles, or sliders, and then we can kinda modify it as we need to. Another way we can control that or get access to that information is by using what's called channel hauling. So I'm gonna select the control or the locator. Let's just call it a controller for the second and then hit the C key.
Nothing happens because no channels are selected yet. So if you go back to our properties, now we can go to our rotation and just click on the letter Z. So that highlights it, or we can add to that. You notice there's a popup that shows up that we could place anywhere in our screen. Where we can click and drag on the word Z, or rotation Z. That changes the value, and we can also type in a value.
Now I had the rotation Y, so if I click and rotate that, that's not really what we want. That clock is too fancy. So we want to zero that out, and then just make sure that we only have the rotation Z selected, and we can click and drag right there. So this becomes really useful when you have a complex rig and you're controlling minuet things, and a well built rig that takes a lot of work, and a lot of effort, and a lot of design, you can have access to this popup window, and for this simple rig, it really doesn't show its power.
So let's take a look at another rig that I built, and this is for design. What that is, is it's my dynamic rig for sizing a table. So you can't really see what that is, just a cube. Let me bring up the grid so we can have a better idea of what's going on here. So I went to the upper right corner of the screen, and I want to show the grid under visibility, and there it is. So it's right in the center.
Now there's this little cube or little box right int he middle, and you can't really select anything else except that box, so I'm gonna click on that, and that has been setup to have channel hauling popup automatically. So the different values here that we have set up. The table top height. So if you click and drag on that, by default it goes to one meter. You can change the table top height. Say you wanna coffee table.
Right now it's metric, so coffee table, let's say 600 milometers. And the width, you want a little bit wider. So let's just dynamically do that. And then the depth, we change that. We also have controls for the thickness. See how that changes. Now this is a very simple setup. The items there that are moving around are actually curves. So they don't render unless you have render curves showing up.
That'll be in a different video. But the leg width, you can change that, and this is meant as a design tool. So you can kind of size it. It's not gonna hit a button and said make table. You'll have to use this as a guide to kind of build your table, but you can snap to these points. So that facilitates the use of the channel haul, and this rig so that we can size a design.
A lot more efficiently than if we were just to kind of figure it our ourselves, and do things manually. You can kinda get an idea of where this is going. If I hit the move too, I can move that around. Some of the things, they didn't say was perfect, but you can make your table right here, and snap to it. So let's see, we can do that. So we can create a new mesh, model.
I'm going to the model tab. So I have a new mesh, and I would just use the basic tool to create a cube in the left corner of the screen there, and then I turn on my snapping, and then I would just click and it snaps to that point. So I have that box that I'm building. Bring that out.
Let's get closer here. So while it snaps to the different points, you can start building your table. Quicker than if you were just kind of designing on the fly, 'cause you get a visual for what that is when we use this. This is a great example, I think, of channel hauling so that we can dial in our values. So channel haul is a very important tool in Modo and it's very useful in rigging.
- Building simple 3D models
- Working with primitive and preset objects
- Using deformation and duplication tools
- Subdivision (SubD) surface modeling
- Understanding replicators
- Creating a fusion model with MeshFusion
- Adding lights
- Shading with materials and UV mapping
- Painting and sculpting
- Animating your scene
- Rendering and exporting renders