WEBVTT 00:00.210 --> 00:06.090 In this lesson, we're going to cover one of the most important aspects of any effects simulation or 00:06.090 --> 00:09.590 dynamic simulation, and that is scene scale. 00:09.960 --> 00:17.250 So let's take the measuring tool out and figure out how big this character actually is that we've created. 00:17.250 --> 00:22.380 So we're going to measure tools will go down to the distance tool so it doesn't look like anything's 00:22.380 --> 00:24.620 change or we actually have the tool selected. 00:25.410 --> 00:30.390 I'm to go down here and hold on X so that I know I'm going to select the grid. 00:30.960 --> 00:35.370 So I'm holding X and I'm going to click in the center here and then I'm going to go up to the top of 00:35.370 --> 00:41.130 the character, hold down V and select Vert Tex on the top of its head. 00:41.670 --> 00:47.760 And if I look here it says 33 and 33 means 33 centimeters. 00:47.760 --> 00:54.570 If I click the settings over here, this little gear will, with the person running, pull the preferences. 00:54.570 --> 00:58.530 You can ask it to preferences from Windows settings and preferences, preferences. 00:59.160 --> 01:05.910 And if I go to settings here, you can see that the working units is centimetres. 01:06.240 --> 01:12.750 So we know that 33 means 33 centimeters, which is not very tall. 01:13.350 --> 01:21.650 For people who are more familiar with inches and feet, six feet is 182 centimeters roughly. 01:22.080 --> 01:30.750 So if this character was to be life size, then we need to scale it up quite a bit because the one thing 01:30.750 --> 01:38.610 to remember with scale and doing any types of effects work that's cloth fluids, you know, fire, smoke, 01:39.210 --> 01:43.680 destruction, whatever it is, Maya always works in meter units. 01:44.490 --> 01:52.330 So that means that this thinks that it is thirty three meters high. 01:52.380 --> 01:56.700 So in my head I like to work and kind of one to 100 scale. 01:57.060 --> 02:01.200 So I want to get this accurate for the centimeters. 02:01.440 --> 02:10.060 And then I'm going to an every effect simulation, use the scale tool for the nucleus and scale it down. 02:10.080 --> 02:11.550 That'll make a lot more sense later on. 02:11.550 --> 02:19.740 But basically if we look at it in Photoshop, we have one centimeter equals one meter. 02:23.290 --> 02:30.850 And under this condition, the scene scale is set to one. 02:31.620 --> 02:36.240 All right, and this will be an attribute, I'll show you where it is later on, but just so you know 02:36.240 --> 02:42.600 why we're doing what we're doing, so we have this relationship and so this. 02:43.620 --> 02:50.820 Thinks it's 33 metres tall, so if we wanted to think this is actually 33 centimetres tall, we need 02:50.820 --> 02:57.840 to divide the scene scale by 100 because there are 100 centimeters in. 02:58.910 --> 02:59.600 Amedure. 03:01.320 --> 03:01.860 So. 03:02.790 --> 03:11.280 For that to happen, we need to divide one by one hundred, which means this, which means that the 03:11.280 --> 03:12.870 new season scale. 03:17.950 --> 03:21.460 Would be point zero zero one. 03:22.940 --> 03:25.310 That is point zero zero one. 03:25.440 --> 03:34.580 OK, so that would make the real world units make sense to the dynamics, right? 03:35.000 --> 03:36.380 This is our model. 03:37.860 --> 03:41.370 And this is the effects that we're going to create. 03:42.930 --> 03:51.210 So we need those to equal one another and we do that by setting everything that we want accurately in 03:51.210 --> 03:58.830 centimeters, and then we reduce the scene scale to zero point zero zero one or something like it. 03:58.860 --> 04:03.750 This is just kind of a guide for how Maya figured that out. 04:03.780 --> 04:05.160 So how do we scale this guy up? 04:05.190 --> 04:11.580 I want to select the locator and let's say we want the skeleton to be one hundred and eighty two centimeters 04:11.580 --> 04:12.750 or six feet tall. 04:13.110 --> 04:16.530 So I'm just going to drag this up until the distance. 04:16.530 --> 04:18.930 Measure says one hundred two. 04:20.020 --> 04:25.420 So something in there, so then I'm going to take the locator down here, which is the little green 04:25.420 --> 04:26.110 locator. 04:27.250 --> 04:28.030 And. 04:29.760 --> 04:37.020 That's actually the measuring locator, which I don't want I want the bones locator and I'm going to 04:37.020 --> 04:40.710 put this in zero so it's all clean. 04:41.160 --> 04:45.270 And then when I scale this up, you can see that we forgot one little thing when we were rigging this 04:45.270 --> 04:48.410 guy, one connection that allows us to scale it up. 04:48.780 --> 04:50.160 So we're going to fix that right now. 04:50.640 --> 04:57.660 If we look at the geometry, if I selected, we can see that if I had effluvia in the outliner, we 04:57.660 --> 05:03.570 can frame it up and we can actually just select the head group and we can see that's where all the constraints 05:03.570 --> 05:03.900 live. 05:03.900 --> 05:07.680 We have the power constraint happening there, which we can see right there. 05:07.680 --> 05:10.120 So let's add the scale to that group as well. 05:10.680 --> 05:16.860 So I'm basically just going to select the bones room and I'm going to command click the head group and 05:16.860 --> 05:20.220 go to Constrain, which is under the animation menu. 05:20.700 --> 05:21.990 And I'm going to go to scale. 05:22.920 --> 05:26.970 And now when we select the bones route and we scale it up. 05:31.110 --> 05:35.880 The head goes with it, so the other little thing that we can do is actually do the same thing for the 05:35.880 --> 05:38.940 HAB because the heart's going to want to stay the same size as the head as well. 05:39.280 --> 05:40.960 So let's just do that real quick for the hat. 05:41.400 --> 05:47.370 So I'm actually going to get that back open and go to the bones route again eventually. 05:48.280 --> 05:52.180 So, yeah, let's let's scale from. 05:53.910 --> 06:01.230 The control group, so I'm going to command, click the control group and constrain scale, and I'm 06:01.260 --> 06:05.010 also want to do that to the Geo Group. 06:06.170 --> 06:11.460 So I'm going to select Bones Root and then command click geo constrain scale. 06:11.960 --> 06:16.350 So now the hat should scale as well. 06:16.400 --> 06:18.750 So it's always going to fit the skull head. 06:19.220 --> 06:23.260 So now we can scale this up to be six feet tall. 06:24.610 --> 06:32.920 So now all of our dynamic simulations are going to be ready to use this rig at a point zero zero one 06:33.250 --> 06:39.430 scene scale as a rough guide, we might do something like zero point zero five or or something like 06:39.430 --> 06:39.670 that. 06:39.910 --> 06:46.300 But basically know that, you know, we're modeling and creating everything in centimeters. 06:46.540 --> 06:52.020 And no matter what, we change the preferences as we can't go in here and just say, you know what, 06:52.480 --> 06:54.100 use meters now, right? 06:54.100 --> 07:03.160 If we go to settings and say meters, that won't matter to the effect simulation or MMS or whatever 07:03.160 --> 07:03.640 we do. 07:03.970 --> 07:07.650 The effects is always, always, always going to use meters. 07:07.690 --> 07:13.240 OK, and that's something when you're learning, Maya, you just have to accept and realize that's what's 07:13.240 --> 07:17.650 happening, because a lot of times you're going to have simulations that are going to feel really slow 07:18.160 --> 07:20.140 or just not feel right. 07:20.140 --> 07:22.200 And it's going to be probably because of the scene scale. 07:22.210 --> 07:27.640 So I want to have that be in the first lesson you learn about scene scale, it's a little boring and 07:27.640 --> 07:34.450 technical, but if you've made it this far in the courses, then I think you're beyond beginner now 07:34.450 --> 07:39.760 and you're ready for some more intermediate learning, because that's what a lot of effects are, is 07:39.760 --> 07:43.450 getting pretty nitty gritty into some attributes. 07:43.450 --> 07:44.150 And Maya. 07:44.410 --> 07:52.090 So the next lesson we are going to look at creating some chater effect and destruction with bullet physics. 07:52.120 --> 07:52.720 Thanks for watching.