WEBVTT 00:00.940 --> 00:03.400 Welcome to animating render layers. 00:03.610 --> 00:09.820 So this is all about swapping out models and taking control over what is appearing in our scene at any 00:09.820 --> 00:11.400 one time. 00:11.410 --> 00:16.930 Now this is critical when you don't want to see the breaks before an object actually breaks. 00:16.930 --> 00:23.260 Very important when it comes to things like glass and ceramics where you can really see the cracks in 00:23.260 --> 00:24.490 a surface. 00:24.490 --> 00:28.350 Now we can get away with it on some objects like our brick work. 00:28.360 --> 00:33.130 Now of course this doesn't have to just be used when you're fracturing objects you can swap models out 00:33.340 --> 00:38.070 if you're about to do something that's need in need of a different model. 00:38.110 --> 00:43.900 So you may already have a model that's what happens when something breaks apart. 00:43.900 --> 00:47.020 You may have modelled in detail exactly how you want that broken apart. 00:47.020 --> 00:52.660 Again this is referring back to breaks admittedly but you could swap out one model for another if you 00:52.660 --> 00:58.660 just wanted to make things literally appear and then go pop and change to something else. 00:58.660 --> 01:04.750 Now glass objects would look absolutely awful if you just had the brakes being rendered so this is one 01:04.750 --> 01:10.820 of the main reasons why you'd want to swap out models is simply because it would it wouldn't look right. 01:11.080 --> 01:17.860 No other difference than that now swapping out the model at the moment the braking will solve that issue. 01:17.860 --> 01:24.280 So this is mainly to do with rendering an animation more than anything else but it can also be useful 01:24.430 --> 01:28.630 when trying out different models as where you can flick between them. 01:28.690 --> 01:31.700 Great if you're showcasing your work as well. 01:31.960 --> 01:35.870 So let's go play with this now and hop on over in the blender. 01:37.100 --> 01:40.420 Okay so I'm in a brand new blender file at this point. 01:40.460 --> 01:45.370 And what we need to do is first learn where underlayers are and what they are. 01:45.590 --> 01:51.140 So you'll render layers are quite simply the layers that you've got active at any one time and you can 01:51.140 --> 01:56.210 control those as well and have different settings for the slenderer render layers. 01:56.210 --> 01:57.850 So where are they. 01:57.860 --> 02:02.000 Well if we go over to the Properties window and click on the second tab and if we hover over that we 02:02.000 --> 02:04.030 can see it's called render layers. 02:04.340 --> 02:05.370 So go over there now. 02:05.390 --> 02:11.390 Now you can have several render layers already set up if you want to we're just going to deal with one 02:11.390 --> 02:14.070 at the moment to keep things straight forward. 02:14.120 --> 02:20.710 Now the ones that were going to be interested in at the moment of a scene layer and the exclude layer. 02:21.460 --> 02:24.550 Now you cannot annamay the scene layer. 02:24.550 --> 02:31.780 So we try and go over the top of any of those and press I it just says layers property can not be animated 02:31.780 --> 02:35.470 we can see the error in the top up there on the info head. 02:35.770 --> 02:37.600 So what can we animate. 02:37.600 --> 02:43.210 Well we can animate the exclude now it is important that we realize that the exclude itself the whole 02:43.210 --> 02:48.940 thing is animated not the individual layers that confuse me something rotten. 02:48.940 --> 02:54.670 When I first started using blender as I y car and I was as basically turning one thing off on one thing 02:54.760 --> 02:57.320 and getting myself in a complete muddle. 02:57.370 --> 03:00.520 So we'll go through animating and making sure it works. 03:00.520 --> 03:05.410 Now one of the very important things at this point before you even start playing with the render layers 03:05.440 --> 03:10.060 and excluding them is realising what is on what layer. 03:10.060 --> 03:15.060 So first of all I'm just going to turn on my I'm not sure if I got it turned on. 03:15.190 --> 03:17.590 So I'm going to go to my add ons and go to layers. 03:17.590 --> 03:21.930 Now I haven't got layer management turned on one of those other ones I forgot. 03:22.100 --> 03:26.680 And when to save me use a setting so with the layer management on I can go to the layer tab in the tool 03:26.680 --> 03:31.700 shelf and start thinking consciously about what my layers are called. 03:31.780 --> 03:38.920 So it's at this point you want to realize that some of your stuff you want to make sure is never excluded. 03:38.920 --> 03:43.770 Like your lighting for instance unless you wanted your scene to go completely dark. 03:44.010 --> 03:47.060 So with that we can call layer one. 03:47.070 --> 03:48.910 Well I wouldn't call layer one lighting. 03:48.910 --> 03:54.390 I think that would be silly since everything starts on layer 1 less you started playing really a lot 03:54.400 --> 03:55.860 with your start-up file. 03:56.020 --> 04:00.850 So we can call this one let's say basic And what's this layer down here. 04:00.850 --> 04:05.620 Now we don't know that that's layer 11 so you can see the little eyeball when I've clicked down here 04:05.950 --> 04:09.980 on the 3d header to header and switched to a different layer. 04:10.030 --> 04:12.970 We've got layer 11 turned on and lera leavens got nothing on it. 04:12.970 --> 04:14.300 I'm going to call that lighting. 04:15.720 --> 04:15.970 Yeah. 04:16.000 --> 04:18.550 Lighting and lighting and camera. 04:18.580 --> 04:20.680 I'm going to put the two on the same layer. 04:20.980 --> 04:25.420 Okay so now we have lighting and cameras set up we better move the lighting and camera to that less. 04:25.430 --> 04:32.770 I'm going to go back to layer 1 and move those two objects with the M key o m and then this layer down 04:32.770 --> 04:35.750 here and then hopefully they will be on the right layer. 04:35.830 --> 04:41.740 Now just to make sure things are working as we'd expect them to I'm going to press front. 04:41.780 --> 04:46.870 Oh I'm going to press F 12 here and there we go it's going to render out and we can see here we've got 04:46.870 --> 04:48.680 light in our scene. 04:48.790 --> 04:56.090 That's because if we look over here on the render layers we've got layer 1 and layer 11 both active. 04:56.260 --> 05:04.150 If we had forgotten and only had lael one active then of course when we go ahead and render it is no 05:04.150 --> 05:04.790 lighting. 05:04.790 --> 05:10.180 Apart from the ambient lighting that's in the environment so it is important you realise whatever ones 05:10.210 --> 05:16.390 of these are turned on are going to be included when you actually hit the render whether that's an animation 05:16.630 --> 05:18.990 or whether a still render like this. 05:19.000 --> 05:24.550 Now if you wanted more than one of these active then you could quite easily hold down the shift button 05:24.820 --> 05:30.450 and click the ones you wanted or even just click and drag over the top in you see them turn on. 05:30.580 --> 05:34.140 And if they're in the state of turning them on they don't turn others off. 05:34.230 --> 05:38.440 And if they're in the state of turning things off like they are at the moment they will turn everything 05:38.470 --> 05:40.390 off that you move the mouse over. 05:40.690 --> 05:44.030 So now we got an idea of how we can turn them on and off. 05:44.140 --> 05:49.810 The next thing we need to do is work out how to animate that so we can switch things in and out whether 05:49.810 --> 05:53.820 that be a fractured object so they don't start fracture. 05:53.830 --> 05:59.590 Very important if it's something like glass you could quite easily imagine if it was a glass cube that 05:59.590 --> 06:06.990 we were dingly with and we'd fractured it would look horrible it before it was supposed to be broken. 06:07.000 --> 06:13.330 So in order to emulate this properly what we can do here is are not going to fracture this particular 06:13.330 --> 06:14.270 object this time. 06:14.380 --> 06:17.740 I've got my basic object on Layer 1 on layer 2. 06:17.830 --> 06:23.710 I'm going to go ahead and add myself something completely different a cone and I'm also going to move 06:23.770 --> 06:25.540 up one blender units as well. 06:25.550 --> 06:28.690 So is occupying the same space. 06:28.720 --> 06:31.000 Now this is on layer 2. 06:31.000 --> 06:35.910 We can check that by just isolating layer 2 we can do it down here or in the render layers tab. 06:36.160 --> 06:38.820 So you can move individually around. 06:38.820 --> 06:44.550 Now remember we will always need this bottom one on layer 11. 06:44.710 --> 06:47.150 Otherwise will have no light in our scene. 06:47.470 --> 06:54.010 So we've got these two things on different layers Now ordinarily because you cannot annamay the layers 06:54.010 --> 06:54.640 themselves. 06:54.640 --> 06:57.580 We have to have all of them turned on. 06:57.580 --> 06:59.970 Now that they're all turned on we have the annamay. 06:59.980 --> 07:06.610 When we exclude certain layers and it's the state of the entire block that is animated. 07:06.610 --> 07:15.270 So if we start off with excluding layer 2 and we keep that in by pressing I and then go to lay that 07:15.700 --> 07:23.800 frame let's say 25 or thereabouts this is 29 some really off of manski Use the Selecter 24. 07:23.800 --> 07:25.540 There we go one second later. 07:25.630 --> 07:28.620 I'm going to key in a new set up. 07:28.750 --> 07:31.410 So this time Layer one is excluded. 07:31.420 --> 07:34.520 And that will be everything there is on Layer 1. 07:34.570 --> 07:37.770 So this is where you have to really be organized about your layers. 07:37.780 --> 07:43.270 So now as we go through we should see that it starts off with layer 2 being excluded and then layer 07:43.270 --> 07:45.570 one becomes the excluded one. 07:46.060 --> 07:46.660 Okay. 07:46.660 --> 07:47.830 So how does that look. 07:47.830 --> 07:51.840 Well let's go ahead and and make between frame 1 and 50. 07:51.850 --> 07:55.120 I'm going to check my settings for rendering. 07:55.120 --> 07:59.260 I've recently installed an external graphics card for my Mac. 07:59.260 --> 08:05.080 So some of these settings do need changing is going to save this. 08:05.380 --> 08:07.430 This scene that we're working on here. 08:08.300 --> 08:12.940 So I'm just going to call this a render layers and a Save that there and I'm literally going to render 08:13.180 --> 08:18.370 an animation so I got up to the render tab and hit render animation and we can see it's just going to 08:18.370 --> 08:24.490 go through here and render or it's not going to be particularly exciting but we should see now as it's 08:24.490 --> 08:30.450 rendering because it's rendering it one frame every one and a half seconds not particularly stellar. 08:30.460 --> 08:35.020 Now we should see and in fact if it's going mislav could have condense that example. 08:35.320 --> 08:44.260 But once it reaches an enormous there have a look once that reaches frame 24 hour Q will spontaneously 08:44.700 --> 08:47.300 become a cone. 08:47.310 --> 08:48.880 How awesome is that. 08:48.940 --> 08:53.410 And you can use this to control your renders very very accurately. 08:53.410 --> 08:59.350 And it's a great way of making sure let's say if something started as a solid and then it was breaking 08:59.350 --> 09:06.610 up that you didn't have an issue when it came to actually rendering it in the first place because the 09:06.610 --> 09:10.990 last thing you want is a piece of glass or something that's breaking apart. 09:10.990 --> 09:16.270 Now we could get away with it on the wall remember because of the the kind of wall texture and walls 09:16.270 --> 09:19.090 tend to have cracks and bumps in them so that's not a problem. 09:19.090 --> 09:24.610 But if it was glass and we can we can accentuate that now we can actually see what would happen. 09:24.610 --> 09:28.780 So we've got these two objects here and I'm not going to make one of them. 09:28.780 --> 09:32.720 Well we could actually make one of them the broken Square we can go back and do this. 09:32.800 --> 09:38.590 And so the easiest way of doing that would be to go back to the 3D view fracture of this well let's 09:38.590 --> 09:41.950 go to the second layer first and delete that cube. 09:42.130 --> 09:44.090 Go back to the first. 09:44.200 --> 09:49.090 The Cube layer here and then let's fracture it so let's go and sell fracture. 09:49.090 --> 09:52.870 And I am not too fussed of how it ends up fractured. 09:53.080 --> 09:59.960 So we've got all the broken layer on layer 2 and let's give these guys a material that is glass. 09:59.960 --> 10:05.740 I'm going to use nodes and when I go to a glass B s the F and let's just render that out and see what 10:05.740 --> 10:06.870 it looks like. 10:07.860 --> 10:11.500 So that's what it looks like we have. 10:11.550 --> 10:14.450 That is the fractured one I was with it both turned on. 10:14.610 --> 10:19.140 So the but the way of just checking this and in fact that would change is were looking around. 10:19.140 --> 10:19.680 Perfect. 10:19.680 --> 10:20.090 Okay. 10:20.190 --> 10:23.920 I'm going to add a floor plain and scale that up. 10:24.110 --> 10:28.610 I'm going to put give that new material in just a diffuse material that's fine. 10:28.650 --> 10:31.800 Of course we've got the lighting turned off at the moment as well. 10:31.800 --> 10:32.180 There we go. 10:32.190 --> 10:38.790 So our glass is sitting on a table or whatever and I'm just going to give the lamp a bit more brightness 10:38.790 --> 10:44.190 as we are going to make it sunlamp to start with not a brightness of 100 maybe even a brightness of 10:44.190 --> 10:44.520 two. 10:44.520 --> 10:44.940 There we go. 10:44.940 --> 10:46.610 So that's not too bright there. 10:46.730 --> 10:48.250 And that's what it looks like. 10:48.330 --> 10:52.050 And of course when we break it apart and let's just swap these layers over. 10:52.220 --> 10:53.150 Oh. 10:53.220 --> 10:53.820 Here we go. 10:53.820 --> 10:55.920 I've got my ground on layer 1. 10:55.920 --> 10:58.080 See how easy it is to forget. 10:58.110 --> 11:00.200 So let's move the ground to layer three. 11:00.390 --> 11:06.210 Then I can have layer three and one turned on or what whatever combination I want I just gotta remember 11:06.210 --> 11:07.370 to turn them on so we see here. 11:07.380 --> 11:12.370 This one's fractured and it looks significantly different too. 11:13.320 --> 11:18.420 This one here and we can even render that out just to make sure it makes sense. 11:18.420 --> 11:22.920 I'm going to play and then actually render that out now and instead of you guys watching I'm going to 11:22.920 --> 11:30.120 wait until we can actually play it back sensibly Okay so what's going on here the floors not for not 11:30.120 --> 11:31.000 being shown. 11:31.020 --> 11:32.260 Why is this happening. 11:32.280 --> 11:37.680 It's because I've actually turned off and this is a good idea to watch your renders he can see the problems 11:37.680 --> 11:38.450 live here. 11:38.490 --> 11:43.820 The scene only has layer one turned on and I want at least these four layers turned on. 11:43.820 --> 11:48.060 In fact everything wouldn't be a bad idea unless I had things hidden of course. 11:48.480 --> 11:54.000 So let's go ahead once more and this time ungless Swap the mauvais just so it's nice and quick. 11:54.000 --> 12:00.000 I'm going to have a friend 20 frame animation I will swap them over at Frane. 12:00.030 --> 12:06.240 HENN a case of frame 10 would get a key in they exclude it should still starts excellence. 12:06.270 --> 12:09.020 The VAT's goes all the way to here. 12:09.060 --> 12:14.660 Okay so initially we want to exclude the broken one which is on layer 2 which is fine. 12:14.790 --> 12:21.300 And then we want to exclude Layer 1 that's key that in some two and then one perfect. 12:21.310 --> 12:25.380 So now when we go ahead and I render the animation everything should be there. 12:25.380 --> 12:30.990 Course this is taking a lot longer to surrender now because we've got a glass shader in there rather 12:31.000 --> 12:32.250 than diffuse. 12:32.250 --> 12:36.920 So I'm glad I did cut the frames down even though now it's going to take a bit longer but we'll see 12:36.930 --> 12:39.450 when we play the animation back in a few moments. 12:39.450 --> 12:41.460 The difference it makes. 12:43.500 --> 12:47.400 Okay so here we go we're just finishing off the final frame. 12:47.400 --> 12:54.060 It's only 20 frames in total and I can go to render and playback the rendered animation just to see 12:54.060 --> 12:58.890 what it looks like and we can see there it's flicking between the two quite rapidly because there's 12:58.890 --> 13:00.200 less than the second between them. 13:00.330 --> 13:01.690 But we get to see the difference. 13:01.690 --> 13:09.480 Now one this nice clean one at the very beginning is how it would look if you were trying to have just 13:09.480 --> 13:16.020 as a basic glass cube and then we've got this horrible artefacts one where it's actually broken. 13:16.110 --> 13:22.590 So you can see the difference there that it would make if you were rendering an object in such a way 13:22.620 --> 13:24.390 whether it's cracked or. 13:24.490 --> 13:30.820 Well mainly if it's cracked and this is also a great example if you just need to swap something out. 13:30.960 --> 13:36.490 So say you're going to transmute between two things instantly lap top away you go. 13:36.570 --> 13:39.440 Well you can do that using this technique as well. 13:39.510 --> 13:42.650 Just remember you've only got so many layers to work with. 13:42.790 --> 13:47.650 So use them sparingly but use them intelligently as well. 13:47.670 --> 13:53.390 And remember you can always set up scenes if you were doing a full blown animation even if it was just 13:53.390 --> 13:54.650 a short time. 13:54.690 --> 13:56.610 Each scene would be seconds long. 13:56.610 --> 14:02.380 You would not try and cram everything into one scene you'd generate a new scene to do that. 14:02.640 --> 14:03.110 Okay. 14:03.120 --> 14:03.590 Brilliant. 14:03.600 --> 14:04.980 How are you guys getting on. 14:04.980 --> 14:07.320 Can you think of some other uses for this. 14:07.320 --> 14:08.730 I'd love to hear your ideas. 14:08.730 --> 14:10.100 Over on the forum. 14:10.140 --> 14:15.280 So join us for an end of TV and I'll see you guys in the next lecture.