WEBVTT 00:00.210 --> 00:02.570 Welcome So quickie explode. 00:02.730 --> 00:04.140 Well what is Kabuki explode. 00:04.140 --> 00:09.570 Well this may be all you need if you want something quick and explosive. 00:09.570 --> 00:16.680 Of course now it can be used also as a starting point especially if the type of explosion it gives you 00:16.980 --> 00:18.520 is what you want. 00:18.870 --> 00:24.550 Now we will explore what it is actually doing for us in the background as well. 00:24.840 --> 00:30.230 So without any further do let's hop straight on over and explore the quick explode in blender. 00:30.450 --> 00:35.730 Okay so I've opened up a brand new blender file here and one of the first things I'm going to do is 00:35.730 --> 00:40.310 I'm going to create another window and I'm going to change it to a time line. 00:40.470 --> 00:45.450 The reason for this is it's going to give us control over the start and end frames and some playback 00:45.450 --> 00:47.250 buttons as well. 00:47.250 --> 00:49.470 Now it's kind of like an animation. 00:49.620 --> 00:52.190 But usually physics is involved. 00:52.200 --> 00:57.710 And physics has to go from frame to frame to work out what is going on. 00:57.780 --> 01:04.440 And later on you'll see that this can be incredibly computationally heavy if you decide to do too many 01:04.440 --> 01:05.470 things at once. 01:05.520 --> 01:11.910 So you do have to be careful when it comes to doing anything with the blender physics engine just like 01:11.910 --> 01:14.940 you have to be careful if you subdivide too many times. 01:15.000 --> 01:17.380 It just really taxes the computer. 01:17.460 --> 01:19.530 It will look like you've locked blender up. 01:19.530 --> 01:27.510 But in fact it's just busy thinking about stuff anyway so first of all let's go ahead and use the quick 01:27.540 --> 01:29.610 explode function. 01:29.730 --> 01:32.610 Now you can get to the quick explode function through a couple of ways. 01:32.610 --> 01:35.870 My favourite is by hitting space and time burning quick. 01:35.880 --> 01:38.940 Explode as you can see I've been practicing. 01:38.940 --> 01:41.820 So if I go ahead and typing quick you can see that it. 01:41.820 --> 01:46.180 We also get quick smoke quick fur and quick fluid as well. 01:46.200 --> 01:49.310 Now we're just going to pick quick explode. 01:49.620 --> 01:51.040 Now what's happened. 01:51.180 --> 01:59.010 Well I can see over in the outliner that's a spanner has appeared or a wrench which means to some modifiers 01:59.010 --> 02:00.420 have been applied. 02:00.430 --> 02:07.260 We see that a particle system and then explode modifier have been added to our scene. 02:07.480 --> 02:09.480 Okay that's that's a good start. 02:09.480 --> 02:13.590 Now let's just go along to the particle system okay. 02:14.210 --> 02:16.960 It's a hundred I don't know whether that's going to make a difference. 02:16.960 --> 02:23.260 Probably not physics and no physics is enabled at the moment. 02:23.260 --> 02:25.720 We'll get into physics in another lecture. 02:25.870 --> 02:33.880 So looking at these modifiers we can see that it's going to cuts the edges for a nice end nice as shrapnel. 02:33.940 --> 02:34.480 Okay. 02:34.720 --> 02:38.150 So this can give us an idea of what it's going to do. 02:38.320 --> 02:40.930 And it looks like it's cutting edge along here. 02:40.930 --> 02:43.260 I don't know how many pieces it's going to explode into. 02:43.270 --> 02:44.580 Let's go ahead and press play. 02:45.860 --> 02:46.510 Okay. 02:46.580 --> 02:48.810 And it seems to break into two pieces. 02:49.100 --> 02:54.670 And also after 50 frames we can see that's there's really nothing else to do something to change. 02:54.680 --> 03:01.650 My end point to 50 frames now looking at the time frame itself here the timeline. 03:01.670 --> 03:06.680 Now we've got this red bar moving along here and that is cached information. 03:06.710 --> 03:13.010 So when we go and change something what blender does is actually play it through it caches those changes 03:13.390 --> 03:17.420 it caches the movement of what's happening when the thing explodes. 03:17.540 --> 03:23.520 It happens in a similar way as well if you use the physics engine which we'll see later on. 03:23.540 --> 03:29.870 Now what is happening is it's not remembering so it doesn't have to do the calculations again and again 03:29.900 --> 03:31.740 and again as it plays through. 03:31.970 --> 03:39.170 Now as you can see up in the top here we got frames per second at twenty four which is great because 03:39.170 --> 03:41.960 I believe that's what the whole scene is setting. 03:42.290 --> 03:45.530 So we've got it just breaking into two pieces. 03:45.740 --> 03:47.890 Now that's not very exciting. 03:47.900 --> 03:52.570 Now we really want it to break in to lots and lots of pieces. 03:52.730 --> 03:56.660 And of course that lines us up now for a challenge. 03:57.970 --> 04:02.110 I would like you to go ahead and make some smaller pieces please. 04:02.170 --> 04:09.010 So use whatever method you'd like to make the cube explode into smaller pieces. 04:09.070 --> 04:10.300 Pretty straightforward. 04:10.300 --> 04:11.190 Give it some thoughts. 04:11.200 --> 04:14.010 Pause the video now and give that a go. 04:15.900 --> 04:16.610 Okay guys. 04:16.620 --> 04:17.380 Welcome back. 04:17.490 --> 04:22.540 Let's hop back over into blender and make it explode into smaller pieces. 04:24.290 --> 04:25.550 Okay welcome back. 04:25.550 --> 04:31.090 So we've got our cube here just really splitting into two are not doing anything exciting. 04:31.100 --> 04:36.340 I've got to stop that animation because it's a wee bit dull and I'm going to go back to frame one. 04:36.620 --> 04:37.040 Well we'll see. 04:37.040 --> 04:39.290 Frame 1 it's already broken apart. 04:39.290 --> 04:41.330 Let's go back to frame 0. 04:41.600 --> 04:46.180 So if we wanted to go in too many pieces it wouldn't be logical. 04:46.190 --> 04:49.580 If we had many pieces for it to go into. 04:49.880 --> 04:54.050 Okay so let's go ahead and go into edit mode. 04:54.200 --> 05:01.640 And I'm literally going to enable the tool shelf go to the specials menu hit subdivide specials with 05:01.640 --> 05:06.770 the W key and hit subdivide elam is going to increase the number of cuts I'm going to go all the way 05:06.770 --> 05:13.370 up to 10 which it will allow and of course you can go in and type the much higher number if you wanted. 05:13.370 --> 05:15.660 And I'm just going to leave it at 20. 05:15.650 --> 05:18.740 Now hopefully that's not too many we can have a look up here. 05:18.800 --> 05:25.170 It's generated 5000 Triangle's that's fine if you sargen here up into millions you're probably going 05:25.170 --> 05:27.670 to slow the computers down massively. 05:27.820 --> 05:33.410 Okay guess now we've done that let's hop out our into object mode and let's go ahead and play back and 05:33.410 --> 05:35.130 see what happens here. 05:36.050 --> 05:38.390 Now that looks a lot lot better. 05:38.390 --> 05:40.560 The pieces seem quite big vote. 05:41.030 --> 05:44.290 That's interesting that the pieces do seem quite big. 05:44.690 --> 05:48.400 Let's see subdividing it any more makes a difference. 05:48.560 --> 05:54.620 Also see if just using a subsurface division modifier would have done the same thing because I do like 05:54.620 --> 05:58.750 to keep things so that you can edit them are much easier. 05:58.760 --> 06:01.970 And of course with 20 subdivisions that's not going to be easy to edit. 06:02.150 --> 06:05.410 So let's go ahead and explore a different way of doing this now. 06:05.650 --> 06:07.650 It's going to hit the UNDO key. 06:07.680 --> 06:12.530 In fact I'm going to hit the UNDO key so we get rid of the quick explode around there where it's broken 06:12.530 --> 06:13.590 it in two. 06:13.820 --> 06:18.460 And let's go ahead and go to the subdivisions. 06:19.390 --> 06:25.190 Surface modifier over in the modifiers tab now where it happens to be in the chain. 06:25.210 --> 06:26.330 May make a difference. 06:26.350 --> 06:29.900 Some just gone up the view counts to four. 06:29.920 --> 06:31.690 And let's see if anything happens. 06:31.690 --> 06:37.300 Okay so it literally breaks into what looks like a burger bun in two. 06:37.330 --> 06:38.960 Let's shift this up. 06:40.380 --> 06:43.430 To the very top hat. 06:43.860 --> 06:44.490 Excellent. 06:44.670 --> 06:49.080 So we can see here that we can go back to the simple as well so it remains a cue ball. 06:49.080 --> 06:53.290 We can do the cat mould Clark and. 06:54.140 --> 06:55.430 Well that's doing something. 06:55.450 --> 06:58.970 So I think there's a much better way of doing it without cutting things up. 06:58.970 --> 07:03.830 Now we ski we can see here that as we increase the subdivisions all the frames per second is dropped 07:03.830 --> 07:04.520 right down. 07:04.550 --> 07:05.480 10. 07:06.140 --> 07:08.430 You see that because we've added a lot more information. 07:08.540 --> 07:14.810 But there does seem to be a finite amount that the explode will cut these up into pieces so if we go 07:14.810 --> 07:23.090 back to one or sarino subdivisions it pretty much cuts in if we go to one subdivision I can't count 07:23.090 --> 07:24.030 all those pieces. 07:24.050 --> 07:31.450 I don't want to but it's less pieces than if we go to every go the 3 We seem to get even more pieces. 07:31.590 --> 07:38.660 But after that it doesn't seem to get any more finer It doesn't get into space or dust or the very small 07:38.660 --> 07:39.130 debris. 07:39.140 --> 07:44.990 So it's worthwhile knowing that we'd have to play even more of the settings to get that sort of effect 07:44.990 --> 07:45.870 going on. 07:46.190 --> 07:46.960 Okay. 07:47.150 --> 07:47.720 Brilliant. 07:47.720 --> 07:50.240 We've just done a quick explode. 07:50.260 --> 07:52.220 It's useful for certain things. 07:52.220 --> 07:56.840 Obviously there's a lot more to be done with this and we can explore that later on. 07:56.840 --> 08:00.750 Until then I will see you guys over in the next lecture.