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In this video, we're going to talk about how you control elements coming out of the Image Hose. And it's all based on which Image Hose you're actually using. As you can see, there's a whole set of variations here that at the moment seem rather cryptic. Now I'm going to start with Linear- Size-P, and we'll talk about these letter designations in a moment. But just for the moment, just look at what happens when I use a linear-named brush. You can see it comes out in a just a straight line fashion.
There is no redistribution of the Image Hose elements as they come out. It just simply comes out in a straight line. I can't control size here, but no matter what, it's always coming out in a linear fashion. Now let's go to Spray-Size-P right here. And when I spray this one, see what happens? There's still a straight line I'm drawing in, but all of the elements are randomly being distributed, either on the line or somewhere above or below it.
And so that is a spray because it's not following a straight line as the linear brushes are. So that's the basic division between the two types of brush. They're either going to come out linearly, or they're going to come out with a random distribution. Having said that, let's go back and examine what all of these various letters mean. So once you've determined whether it's a linear or a spray brush, you then have another attribute associated with it. And that is what the basic behavior is going to be.
In this case, the angle is going to be affected by something. Or in the case of size, it will be a linear brush, but size will be affected by something. And the final letter tells you what it is that is affecting the attribute that is being described in the second slot of the naming convention. So in this case, it's a Linear brush, it's going to come out in a straight line. It is going to be angle-controlled somehow.
And how is it going to do that? It's going to do it with bearing. And let me explain a little bit about what we're talking about here. I'm going to switch to another image temporarily. You basically have six different axes of motion that anything in the three-dimensional space can be described by. And when you're holding a brush or a pencil or in our case, a tablet stylus in your hand, there are different dimensions of motion that can be extracted from what's happening.
And once you've tilted a brush, you can sweep it around in a 360 degree circle. And that is bearing. So you need to have tilt in order for there to be bearing. If you just hold the pen straight up and down, there is no such thing as bearing. But most of the time, we have our pen at some angle. So once we have that angle, we can then use our wrist and hand to change the bearing of the brush. So bearing is one of the other controls.
The other primary control that the Image Hose uses is of course pressure. So that's how hard you're pressing on the surface of the tablet. So that describes the attitudes of control that we have with the Image Hose in terms of these very naming conventions. Let's go back to our image and let's just take a look at this. If I go with Linear-Angle-B, I can spray this, but now I'm going to change my bearing of my pen and see how I'm now controlling. I'm just sweeping it all the way around.
And so, I now not only have directional control over it, but I can change that angle as well based on the bearing of my hand. And it takes a little while to learn how to do this. So the first time you try it out, it may seem a little odd. But once you have played with it and experimented, it's very easy to get the bearing that you want. So Linear-Angle-B is one such control over the brush that we can have. I'm going to Command+A or Ctrl+A and Backspace or Delete to get rid of everything here.
The next one is Linear-Angle; that's going to somehow have the angle controlled, but by what? In this case, W stands for wheel. This is rather esoteric because this is associated with the Wacom Airbrush Stylus, which probably 1% of Wacom users have. If you're one of that 1%, I'm happy you have it. And there is a little wheel on the top of that pen that emulates a wheel on an airbrush, and rolling that wheel back and forth in your finger will, in this case, control angle.
But for 99% of us, we're never even going to be concerned with or ever select any of these W variants, because we don't have the airbrush pen. So the third one in this list actually becomes a little more compounded. It's a Linear brush, but it's controlled now by two dimensions. You have size, which is going to be controlled by P, pressure, and Angle-B, bearing, as we saw earlier here. So let's select this one and I'm going to make sure I have my calibration on the way I like it.
And now when I draw with this, I have bearing control but notice I've also got pressure control. So now I can control two dimensions of the brush at once. And to be honest, at first it seems like you're trying to do an impossible task, but as you start using these, you won't even be thinking about the fact that you're controlling multiple dimensions. It's very natural. Next up, we have Linear-Size- Pressure and Size-D, which is Direction. So this one is just whatever direction your brush is going, it is going to control the angle of the brush.
So let's try this one and now what happens is my angle is always going to be controlling it and I have pressure control, assuming I have Brush Calibration on. I'll once again clean the screen off here so we can see clearly. Now in this case, you have no means other than when your direction happens to be straight up and down. That's the only way I can get the tree to stand upright. And you're not going to use this for every Image Hose. Where this will work great is, if I had an Image Hose nozzle that was a set of say, arrows or bullets, then I could whichever way I draw them, they're going to go that direction.
And so, you'll find that every Image Hose variation isn't going to work with every piece of content. I'm just using a very angular Image Hose nozzle to show you how these various dimensions of control work. Okay, let's go to the next one here. Now we have the Linear Size is Pressure, but the Angle is R, that stands for random. So what's going to happen there? Well, let's select that one; let's make sure our Brush Calibration is set up.
And now, I can control the pressure, but notice every application of the Image Hose elements are random. So the angle is random. So now I get kind of an interesting tossing and turning version of our tree, based on the fact that it's random when it comes out, but I still control size with pressure. Okay, next. Okay, the next one on our list is a Linear brush and it's pressure controlled for size.
And this is where the wheel comes into play. I don't have the airbrush; most people don't, so we're just going to ignore those. Next is the size is random and the angle is based on direction. So let's try that one, and let's make sure we're calibrated here. So this one is direction is controlling. It is very similar to bearing, and if you have one of the Wacom Bamboo Tablets which doesn't sense bearing, this is a great way to emulate the same kind of behavior just by which direction you go.
You're changing that, and the size of these is coming out in a random fashion. All of this may sound very esoteric right now; it's mostly a case of just playing with it and trying them out. Then we get into single dimensions once again. Here's Linear, all that's changing here is I can change the size based on pressure. Here one, the size is random but nothing else happens.
Then we've got the wheel again, we'll ignore that. And then we need to switch to the Spray brushes, and they basically behave the same. They may not be an exact parallel for every type, but behaviors and how they are controlled are then similar down here. So once you understand the nomenclature of how the brushes are named, it's very easy to quickly go, gee, I want a brush that sprays out but I can control the size with pressure. Well, that would be Spray-Size-P. So I grab that, and there's my brush that I can adjust size with pressure, but no change in the angle.
If I want a brush that changes with pressure, and is a spray, and also the angle is random, go to there. Well, you can see now that we've gone through the nomenclature of the names; it's fairly obvious what each one is going to do. So that is how you control the content coming out of the airbrush. It's based on which one of these you select. So you want so be sure you kind of understand this nomenclature I went through and having internalized it, you'll be able to quickly select the brush that you want for the particular content that you are applying.
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