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When using the 3D camera tracker in Aftereffects, you can ask it to create what is called a shadow catcher. And a shadow catcher is a layer designed just to cast shadows in Aftereffects. So when I put a new element in and light shines through it, this layer will contain shadows only. And it won't contain any pixels, apart from the shadows. So it's a really good way of being able to composite shadows onto elements. And it's done by after effects automatically creating a layer that has except shadows only.
So if I switch that to off, you'll see it's a regular layer. If I switch it to on It will have shadows and the pixels, and if I say only, it will only contain shadows. So After Effects does that for you. Now what we are going to do is we are going to create a similar thing in CINEMA 4D, but before we bring it into CINEMA 4D, I just want to correct the rotation. You'll notice it's not, rotated in the correct way, to fit in with the top of the building there. So all we're going to do is just make some adjustments to the shadow catcher.
So it's as well in position, as it can be before we go to Cinema 4D. Now if we scroll through, you'll see it track nicely into the shot. Let me just change that to Fast Draft mode so we can see that a little bit quicker. It's tracked nicely into the shot. But as I said, the rotation or orientation is not right. So we'll hit r on the keyboard to bring up our orientation. And all I'm going to do is just adjust these values until I can get the solid to be in the right orientation.
Now, you'll notice that when I adjust what you would think was the y axis. You'll notice that it's actually rotating, around what we would normally presume is the z axis. Now that's because we're in local access mode, and this solid has actually been rotated already and the axis is aligned with the solid. If we switch to world access mode, we now have the y axis where we'd expect it to be, so I can hit w on the keyboard to open up my rotation tool. Or Rotation Tool and I'll rotate it into position.
Now I can't go back into local axis mode any time I want to, for just want to make a slight adjustment on one of the other axis and that works better. So you can't get used to jumping between those different axis modes >> Just to just whatever suitable. There's also View Access mode as well, if just want to pull it slightly forward on the Z axis or the X axis. Now, I've still got the rotation tool selected. Silly me. So, I'm going to switch to the Move Tool by hitting V on the keyboard and just move that into position.
And this time I'm using view axis mode to switch back to the rotation tool using W. We just get it roughly into position. Now, of course, I can also make it bigger or smaller. If I just, adjust, those values, you'll see we can make it a little bit bigger. Okay. So we've now got a slightly bigger area to cast shadows onto. Course you can mask it, and do all sorts of other things, if you want to. But important, just to get that as correct as possible.
Before then bringing it in to Cinema 4D. So I'm going to just quickly switch back to the selection tool, because it always catches me out when I forget to do that. And then save that before I move on to the next step.
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