WEBVTT 00:00.150 --> 00:09.140 Welcome to auto inversed kinematics or I can say in this video you will learn how to turn on auto Ike. 00:09.150 --> 00:14.540 I realize that this is a starting point and not perfect. 00:14.580 --> 00:21.960 I understand that applies to the whole rig and see that it allows us to control the connected bones 00:22.290 --> 00:23.870 all at once. 00:23.940 --> 00:26.510 So let's hop straight on over into blender. 00:28.850 --> 00:35.050 Okay so we're back over in blender and I'm just going to clear up my screen space for the moment so 00:35.090 --> 00:40.910 I'm going to hide our node editor and I'm going to clear our render border. 00:42.330 --> 00:45.540 And actually just switch it over to solid. 00:45.540 --> 00:46.160 There we go. 00:46.320 --> 00:48.440 So now we've got our model in front of us. 00:48.450 --> 00:56.540 If we were to move it in its pose positions what we currently have to do is grab each one of these individually. 00:57.440 --> 01:00.630 And move it to the position that we want which is a bit arduous. 01:00.630 --> 01:07.500 It would take ages to set up a post for your model this way but there is a better way. 01:07.550 --> 01:10.410 What we can do is turn on auto. 01:10.430 --> 01:15.540 K now that's under the options menu on the tool shelf and there's a little tick box here. 01:15.600 --> 01:21.740 The only one you do need to be imposed mode with your armature selected and turn on auto I k. 01:21.860 --> 01:29.150 Now one thing to actually say at this point is when we turn on auto I k it will in fact override any 01:29.150 --> 01:32.360 of the bone constraints that we have already set. 01:32.360 --> 01:38.540 Now that is important to realize because we're going to have to constrain that movement later on using 01:38.540 --> 01:39.510 the K. 01:39.560 --> 01:46.760 The inverse kinematic constraints rather than relying on the previously assigned bone constraints. 01:46.760 --> 01:51.980 Now I know that it could be frustrating if you've already set up rows of bone constraint but you just 01:51.980 --> 01:57.050 need to realize if you decide to go down the auto II K route you're going to end up with this where 01:57.050 --> 02:00.590 you're going to have to reset up some of your constraints later on. 02:00.590 --> 02:04.610 Now what that does is it affects the entire rig every single bone in this race. 02:04.640 --> 02:10.760 It now has auto I k now what that means is as we move one of these bones. 02:10.760 --> 02:13.700 The others also move as well. 02:13.700 --> 02:19.970 Now is not going to be perfect but it's a great starting point to get your model into certain positions 02:20.600 --> 02:23.720 and it controls all of these connected bones. 02:23.720 --> 02:29.650 If we had any bones that was separate to this model it would not do that and we couldn't use auto like 02:29.650 --> 02:32.720 hey to annamay a model that was like that. 02:32.930 --> 02:39.470 Now in terms of how powerful this is as you can see it allows us to get into any position very very 02:39.470 --> 02:40.290 quickly. 02:41.640 --> 02:44.180 However there are limitations of course. 02:44.280 --> 02:46.310 You will see that as you move it about. 02:46.320 --> 02:51.660 Occasionally the model will end up looking the wrong way now it looks like it's going okay at the moment 02:51.670 --> 02:58.860 must just be the view I'm in and I'm just clicking this end note here and just moving it's about if 02:58.860 --> 03:03.870 we grab the bone itself it also does the same if we grab the bone behind it. 03:03.920 --> 03:07.280 It doesn't affect the bone in front of it. 03:07.290 --> 03:13.110 Now that's an important consideration to make whenever you're moving your model around the movement 03:13.110 --> 03:15.440 itself goes backwards down the chain. 03:15.450 --> 03:18.660 Right to this root bone at the base that we have here. 03:18.690 --> 03:21.310 So if I'm moving this one it affects everything. 03:21.390 --> 03:25.090 If I'm moving this one on the bottom it only affects itself. 03:25.260 --> 03:27.340 This one would only affect itself. 03:27.450 --> 03:30.930 And the one benefits and so forth and so forth. 03:30.930 --> 03:37.110 So at least we can position things how we once must remember to left click to set the position. 03:38.030 --> 03:39.280 And you can see effects. 03:39.290 --> 03:44.590 Now you can also move these all individually without auto AK applied as well. 03:44.750 --> 03:47.260 So we can just hit the rotate. 03:49.180 --> 03:51.040 And just move it to a different position. 03:51.040 --> 03:54.850 Just in cases ended up in a bit of a squishy position. 03:54.850 --> 03:57.370 And let's just see how that looks in rendered mode. 03:57.370 --> 03:58.060 Perfect. 03:58.150 --> 03:59.900 A lamp is looking at us. 04:00.220 --> 04:03.060 Okay guys it's Challenge time. 04:03.070 --> 04:10.510 I would like you to strike a pose now play with the various poses and share your poses that you have 04:10.570 --> 04:11.860 in the discussions. 04:11.890 --> 04:12.810 Let's have some fun. 04:12.820 --> 04:15.450 Pause a video now and give that a go. 04:17.630 --> 04:18.230 Okay guys. 04:18.230 --> 04:19.140 Welcome back. 04:19.280 --> 04:23.300 Let's hop quickly over into blender and play with our model. 04:23.300 --> 04:29.240 So I'm going to hop back on over into solid mode out depending on what you want to do with your model 04:29.240 --> 04:32.870 what poses you have it in of course you can move all these bones. 04:32.990 --> 04:35.780 We can have the lamp looking at itself. 04:35.800 --> 04:36.620 Hmm. 04:36.800 --> 04:40.830 Let's see if we can bring that in a little right and lift this one up. 04:40.850 --> 04:46.390 I might have to rotate this one just here manually to point down a little. 04:46.400 --> 04:47.660 There we go. 04:47.690 --> 04:51.380 So there's lots of poses you can get into now as you've been playing about. 04:51.380 --> 04:57.670 You'll notice that sometimes you end up with this jerking happy where it flicks from one side to another. 04:57.920 --> 05:03.770 Now there are certain ways we can eliminate that but essentially you're going to have a few problems 05:03.770 --> 05:08.420 from time to time especially if the bones end up flipped like that. 05:08.630 --> 05:13.970 So the simple thing is to make sure that you don't do too violent a movement at once. 05:13.970 --> 05:20.450 So don't go from one extreme over here to over here and expect it to look nice as it progresses through 05:20.450 --> 05:21.660 the movements. 05:21.800 --> 05:26.900 And as you can see at certain points it ends up flipping and looking horrible. 05:26.900 --> 05:27.690 Brilliant. 05:27.710 --> 05:32.330 If you haven't done already I'd love to see the poses you've come up with in the discussion so please 05:32.330 --> 05:33.810 post the picture in there. 05:34.040 --> 05:39.000 And if you've got any questions asking the discussions and I will see you in the next lecture.