WEBVTT 00:00.090 --> 00:05.550 So I want to cover Olympic cashes and why they're important, we have a scene that I've animated for 00:05.550 --> 00:06.230 you there. 00:06.240 --> 00:12.150 We're going to use throughout the section of this course to create some effects and to make sure we 00:12.150 --> 00:14.030 have a skeleton that pops out of grave. 00:14.850 --> 00:19.290 We've you know, if you fall along, you've modeled, rigged, animated, textured, all this stuff. 00:19.470 --> 00:21.960 So you should be familiar with this rig and all that. 00:21.960 --> 00:25.600 But anyway, I animated this whole thing for you, so you have to worry about that. 00:25.620 --> 00:31.280 I did provide as a bonus content three hours that it took to animate this. 00:31.320 --> 00:33.120 So you can see exactly what I did. 00:33.780 --> 00:35.460 There's no kind of smoke and mirrors. 00:35.470 --> 00:38.700 You can follow along with that. 00:39.210 --> 00:46.950 But so for this lesson, I want us to talk about Olympic caches and Olympic caches are important because 00:46.950 --> 00:50.070 when you start to do affects work, you kind of want to lock in your animation. 00:50.220 --> 00:52.880 And for that reason, you can get rid of the rig. 00:53.190 --> 00:54.740 So there's a lot of nodes. 00:54.750 --> 00:56.310 You know, we have a lot of keyframes. 00:56.310 --> 00:57.780 We have a lot of controls. 00:57.780 --> 00:59.390 We have joints hidden here. 00:59.710 --> 01:02.850 There are a lot of things going on here that can be very intensive. 01:02.850 --> 01:09.930 Tamaya, and once you start doing simulations, you kind want to focus the intensity on the simulations. 01:09.930 --> 01:15.420 You don't want it to be calculating the rigs while you're playing back for simulation. 01:15.430 --> 01:17.340 So we want to cash this out. 01:17.340 --> 01:18.840 So it kind of takes everything down. 01:19.260 --> 01:21.930 And the way to do that is with Alembic caches. 01:21.960 --> 01:28.620 Now, there's a couple little catches here, so there's something I can tell is starting at frame 1001, 01:28.620 --> 01:31.680 and that is because we need to pre roll for all effects work. 01:32.010 --> 01:38.910 So if you ever work for a big studio, every scene probably is going to start on frame 101 or 1001 so 01:38.910 --> 01:40.270 that you have a lot of pre roll. 01:40.290 --> 01:44.310 And so if we go back a little bit, let's go to like frame 800. 01:44.790 --> 01:50.580 We can see there was actually a lot of animation that happened before Frame 1001, which begins our 01:50.580 --> 01:51.120 animation. 01:51.720 --> 01:57.300 And the reason is, is because later we're also going to find out we're going to create a vest for him. 01:57.750 --> 02:04.020 So for the class simulation, we want a lot of pre roll so the cloth can settle and it can be attached 02:04.020 --> 02:11.280 to his body in a very default pose, and then it will slowly morph into the pose that it will be animated 02:11.280 --> 02:11.640 from. 02:11.970 --> 02:14.880 But we need this tempo's to kind of help start everything off. 02:15.210 --> 02:16.500 And the same is true. 02:16.650 --> 02:18.960 Run up for like smoke or fire or whatever. 02:19.260 --> 02:21.450 You want to have smoke on screen. 02:21.450 --> 02:26.430 You don't want the animation to start and the smoke starts the same frame that you're watching. 02:26.910 --> 02:29.610 So, like, the smoke would be already there, right? 02:29.620 --> 02:33.450 So you need approval at least enough so that it gets to the top of the frame. 02:33.900 --> 02:35.850 So that's why we start so far back. 02:36.510 --> 02:41.100 And I bring this up now is because when we're going to cache this thing out, we want to make sure that 02:41.100 --> 02:44.100 we have all the Proval included in that Olympic cache. 02:44.790 --> 02:50.790 So to get that, we need to unreferenced the the bones right here so we can actually select the geometry 02:50.790 --> 02:54.480 and then also deselect these so we don't get the cons or joints. 02:55.050 --> 03:01.470 And the other little tricky thing about Olympic caches is, at least in this version of my you will 03:01.470 --> 03:07.320 get an error if you select something that has a parent kind of relationship. 03:07.680 --> 03:12.900 So if you look here in the head, we can see we have this kind of blackout thing and this little card 03:12.900 --> 03:17.010 back here that so the inside of the skull is black. 03:17.610 --> 03:22.500 If we were to select that and the head, it will give us an error when we try to alembic cache. 03:22.500 --> 03:25.950 So you want to be sensitive to those relationships in your rig. 03:26.220 --> 03:33.810 And so for that reason, when I click select everything, so if I click drag, select everything, it's 03:33.810 --> 03:34.710 going to give me an error. 03:34.740 --> 03:36.870 So I want to shift to select that. 03:36.870 --> 03:45.540 So at Deselected and I have this little script editor open, which you can open up down here and will 03:45.540 --> 03:47.580 contain the history of everything that you've done. 03:47.850 --> 03:52.620 And so you can see select toggle Brownrigg plain whatever. 03:52.890 --> 03:53.910 And that's what this is called. 03:53.920 --> 03:56.790 We can see this is called plain one. 03:57.270 --> 04:03.750 So if we select everything, we can see it read out that, you know, we selected all this whole long 04:03.750 --> 04:04.500 list of stuff. 04:05.070 --> 04:08.790 And if we go in here in shifts like the plane, it's going to toggle a selection. 04:08.790 --> 04:13.650 So it's going to deselected, but it's going to look like it's selected because it is a child of something 04:13.650 --> 04:14.370 that is selected. 04:14.520 --> 04:19.050 So it's a little confusing, but you just need to know, don't select something that's a child of something 04:19.050 --> 04:19.320 else. 04:19.650 --> 04:27.270 So, for example, in this hat, you know, the Jamestown's and this little braided rope thing are all 04:27.270 --> 04:28.290 children of the hat. 04:28.620 --> 04:33.470 So all we need to do is select just the parent piece of geometry, which is the hat. 04:33.840 --> 04:36.600 So now we have the selection that we need to create the Alembic cache. 04:36.600 --> 04:38.640 So all we need to do is go to cache a little bit. 04:38.640 --> 04:42.630 Cache export selection to Alembic will open up this option box. 04:43.050 --> 04:48.510 The main things that you want to make sure are you have you right on so that we actually get UV rays 04:48.510 --> 04:49.530 with the Olympic cache. 04:49.530 --> 04:55.050 It's going to create new geometry, basically duplicate all this stuff out frame by frame with the animation. 04:55.530 --> 04:59.100 And we want WorldSpace so that it's put correctly and. 04:59.530 --> 05:06.700 Based on world position and again, back to the pre-war stuff, we want to make sure that we have rolled 05:06.730 --> 05:09.750 920 as the first keyframe that we have for the pre-war. 05:10.030 --> 05:13.150 So everything before nine twenty, he'll just be in that tempos. 05:14.170 --> 05:18.640 So, you know, we don't need to cash everything from zero all the way through. 05:18.910 --> 05:21.640 We just need to get the first keyframe, which is on frame nine 20. 05:22.120 --> 05:24.220 So we have nine to twelve hundred. 05:24.220 --> 05:30.940 We have these two things checked now we can say export selection and already have the name set up here 05:31.240 --> 05:32.200 and export that. 05:32.470 --> 05:32.800 Yes. 05:32.800 --> 05:37.780 When we replace it and it's going to run through the whole animation, bake this out and then we are 05:37.780 --> 05:44.380 going to reimport it back into the scene so that we can apply the shaders because one kind of not knowing 05:44.380 --> 05:50.740 anything about Alembic caches is it's not going to give you the materials and shaders that you've created. 05:51.130 --> 05:54.940 So let's go to cash and import the Olympic cache. 05:56.780 --> 05:58.940 And that's when we just did. 06:00.680 --> 06:07.730 So now when you look at the outliner, we have all of this geometry from the rig, and let's just keep 06:07.730 --> 06:12.870 this so that we can kind of keep this organized and call it the Alembic rig. 06:14.210 --> 06:19.790 So now when we saw this, it looks like it has texture's, but it's just happens to be around top of 06:19.790 --> 06:21.340 the actual rig that's still on the scene. 06:21.350 --> 06:24.500 So you can see that this is all not textured properly. 06:24.890 --> 06:30.950 And what I'm going to spend some time doing between this lesson and the next is is going through and 06:30.950 --> 06:31.910 reapplying these things. 06:31.910 --> 06:36.970 And how I would suggest applying these textures again is open up the hypercharged. 06:37.010 --> 06:43.100 So we have the hibernate open from this little button and we see all of our shaders here listed in materials 06:43.100 --> 06:43.400 tab. 06:43.820 --> 06:46.850 I can right click and say select object with material. 06:46.860 --> 06:49.030 So it's going to select the geometry that has this material. 06:49.030 --> 06:55.520 So when I look in the same let me on solo everything, I can see that this is the actual hat. 06:56.450 --> 07:00.800 And I don't want to say one little thing about this so we can see it's not the gem's, it's not that 07:01.100 --> 07:03.640 and kind of back to this kind of parent child relationship. 07:04.010 --> 07:08.810 So we know this first thing is going to be applied to the Olympic cache, that if I select this, we 07:08.810 --> 07:09.200 didn't see that. 07:09.200 --> 07:11.210 We're actually getting the gems, the rope. 07:12.770 --> 07:15.500 But we we know that these have different shaders. 07:15.500 --> 07:19.540 We don't want to apply the shader to those pieces of geometry. 07:19.550 --> 07:23.510 So if we said Cyrilla selection, it's going to Sirt it to the gemstone. 07:23.840 --> 07:25.930 But this Qenos only for the hat. 07:25.970 --> 07:29.830 So how do we get to that is actually pressing down on the keyboard. 07:29.840 --> 07:31.280 So I'm going to head down on the keyboard. 07:31.730 --> 07:34.970 So it's going to go to the shape node of this. 07:34.970 --> 07:35.380 Right. 07:35.810 --> 07:40.490 So we're no longer in the kind of parent hierarchy and you can see this in the outliner, just kind 07:40.490 --> 07:44.450 of getting the nitty gritty of this, since we're already talking about some some deep stuff here. 07:44.570 --> 07:48.020 You can see like when I select the hat, it's like this, a blue color. 07:48.360 --> 07:51.290 When I press down, it looks like. 07:52.250 --> 07:55.900 I'm selecting something in a hierarchy, but I can't see anything in the hierarchy below this. 07:56.300 --> 08:00.890 Well, that's because we don't have the shapes displayed and this is just kind of an organizational 08:00.890 --> 08:01.780 thing for Maya. 08:02.030 --> 08:08.750 You don't have to worry about this too much, but just know if something is a parent to something and 08:08.750 --> 08:10.550 you don't want to apply Shaner to it. 08:10.550 --> 08:12.890 Just press down on the keyboard and we can. 08:12.890 --> 08:13.100 Right. 08:13.100 --> 08:15.740 Click on this and say assign material to selection. 08:16.100 --> 08:19.030 So now we know that this hat has the right shader. 08:19.280 --> 08:25.590 So between this lesson in the next, I'm going to go through here and say select objects with material, 08:25.940 --> 08:30.390 see which object it is, and then assign it to its Olympic cache counterpart. 08:30.830 --> 08:37.520 So I will see in the next lesson where we will continue to use this Olympic cache and get rid of the 08:37.520 --> 08:45.080 rig so we can just use the cache and then we will talk about breaking up this ground when he punches 08:45.080 --> 08:46.310 through with his fist here. 08:46.850 --> 08:52.580 And so we're going to break this up and have a dynamic simulation for that based on the physics that 08:52.580 --> 08:56.560 we've already learned, but with a couple new tools and tricks. 08:56.570 --> 08:57.350 So thanks for watching.