WEBVTT 00:00.650 --> 00:05.870 Welcome to rooting face loops using polls in this video. 00:05.870 --> 00:13.940 You'll learn more about where polls are really useful how to use a poll to terminate edge or face lupe's 00:14.600 --> 00:18.950 how they can guide and redirect edge or face loops. 00:18.950 --> 00:25.180 And remember an edge or face he doesn't have to link back onto itself. 00:25.190 --> 00:30.500 It's useful when it does in certain circumstances but that won't always be the case. 00:30.860 --> 00:37.060 So just a reminder here that Paul is a virtex when multiple edges of faces meet. 00:37.430 --> 00:43.970 So in the case and we're going to be dealing with cords here polls can happen with any shape whether 00:43.970 --> 00:46.440 it's a triangle or an other thing gone. 00:46.550 --> 00:51.260 But we're only going to be dealing with quads and if we have a look at this picture here we can see 00:51.320 --> 00:56.320 three highlighted avoid all sharing one vertex. 00:56.390 --> 01:00.440 So that's a three part well here we have five quads. 01:00.440 --> 01:01.490 These are the most common. 01:01.490 --> 01:09.770 By the way about your come across and that is where Five quads share one vertex and again this is smack 01:09.770 --> 01:14.510 bang in the middle and we'll go through a few other examples of where you can find these and that will 01:14.510 --> 01:17.960 help you explore the world of face loops. 01:17.960 --> 01:24.440 So one thing the final thing to go over so before we go exploring all this in blender there is one final 01:24.440 --> 01:27.710 thing that I would want to go through and that is a loop flow. 01:28.750 --> 01:33.610 Okay so let's talk quickly about loop flown now with quads. 01:33.610 --> 01:36.770 Of course this doesn't apply to any gods or triangles. 01:36.940 --> 01:38.530 Think of the edges. 01:38.530 --> 01:44.470 If you were to count around either clockwise or anticlockwise around day that's to just take a symbol 01:44.470 --> 01:45.660 one a square. 01:45.760 --> 01:50.320 The first edge you look at his number one then number two and number three the number four then you 01:50.320 --> 01:52.570 get back to edge number one again. 01:52.570 --> 01:57.910 Now I like to think one in three and two and four has been joined together. 01:58.150 --> 02:05.560 This will help you visualize a face Lou and also help you to construct it and control the direction 02:05.560 --> 02:07.210 in which it's travelling. 02:07.210 --> 02:13.080 So enough with theory already let's go play with this now and hop on over in a blender. 02:13.210 --> 02:19.810 Okay so your head should be coming along rather well at the moment and let's not go and muck that up 02:19.810 --> 02:20.350 at the moment. 02:20.350 --> 02:23.780 Let's go ahead and open up a brand new blender file. 02:24.100 --> 02:24.330 Okay. 02:24.340 --> 02:28.090 And then we get rid of the default Cuban can delete it completely. 02:28.230 --> 02:32.290 And I'm going to add a new mesh object and I'm going to call it. 02:32.350 --> 02:37.870 I'm going to call it a grid it is a grid and I'm going to stick with the default one and I'm going to 02:37.880 --> 02:44.380 Scotia show over into the top few and zoom in just a little and make sure it orthographic projection 02:44.380 --> 02:46.980 for the moment so I can see these grid lines properly. 02:46.980 --> 02:49.460 I'm going to hop straight into edit mode. 02:49.630 --> 02:52.950 So you've got a 10 by 10 grid here that we can play with. 02:53.110 --> 02:58.360 And the first thing I'm going to do is just hype the 3D manipulator which I'm not going to need it. 02:58.570 --> 03:04.800 Let's explore making a loop around our particular mesh. 03:04.810 --> 03:07.960 And this is only a 2D one obviously in three dimensions. 03:07.960 --> 03:10.910 It can take on a slightly different feel as well. 03:11.110 --> 03:13.200 So want to go and grab the knife tool. 03:13.300 --> 03:19.740 And this starts at a virtex here and go roughly into the middle of it in all the way up to the top and 03:19.740 --> 03:21.810 the press space to apply about. 03:21.880 --> 03:27.830 And I'm going to grab the knife tool again and this time go all the way across to the other side. 03:27.910 --> 03:30.460 And again I'm going to press space to apply that. 03:30.640 --> 03:32.900 Now let's have a look at what that's done. 03:33.190 --> 03:37.330 That has created a flow running around here. 03:37.540 --> 03:38.450 And this is similar. 03:38.500 --> 03:44.200 This is exactly the same as the picture we saw moments ago where we have one vertex in the middle here 03:44.260 --> 03:49.000 just behind that 3D kerson phone bill move through the cursor at the way for the moment exactly where 03:49.000 --> 03:50.740 the origin is as well. 03:50.740 --> 03:55.360 And we have the five quad just here as well. 03:55.480 --> 04:03.250 So what has happened here and what has it broken so let's go explore what it has broken. 04:03.250 --> 04:06.660 So as we go along here we can see it goes along there. 04:06.700 --> 04:08.740 Has it broken anything along here. 04:08.740 --> 04:09.220 No. 04:09.220 --> 04:11.270 Has it broken anything along here. 04:12.440 --> 04:15.310 The Breaks how we might not want that flow. 04:15.330 --> 04:16.950 That's one thing to consider. 04:19.580 --> 04:22.190 So everything appears to be okay. 04:22.310 --> 04:24.940 But there might not be desirable flow here. 04:24.940 --> 04:32.420 All right hap's we've added too much geometry into our model and if we wanted to change that for instance 04:32.420 --> 04:41.120 we could group these four quads together and that would make modelling a tad easier if we started to 04:41.120 --> 04:43.790 get too much detail in one place. 04:43.840 --> 04:48.510 We can simply do that by dissolving some edges. 04:48.680 --> 04:52.870 So these unguents which affects her face may have These are going to be joined together. 04:52.880 --> 04:55.970 These along here not into one big lump. 04:56.180 --> 04:58.510 This is just one of the things we can do here. 04:58.550 --> 05:01.650 Just to remind you of that will depend on what you're doing. 05:01.670 --> 05:11.070 So if I dissolve these edges here and then dissolve these edges will. 05:11.150 --> 05:15.330 And why go the right way these ones here dissolve itches. 05:15.440 --> 05:17.810 Now that should get rid of the vertex in the middle. 05:17.810 --> 05:20.120 Now we have a triangle here. 05:20.240 --> 05:25.240 So we need to get rid of that edge there as well. 05:25.460 --> 05:31.790 So this isn't quite there yet because if we follow the edge flow if we talk about the one two three 05:31.790 --> 05:33.450 four that we're talking about before. 05:33.500 --> 05:42.500 So 1 2 3 so 1 and 3 will be flowing so that be here here then we've got one while we've got too many 05:42.500 --> 05:43.050 here. 05:43.190 --> 05:46.500 So there needs to be another flow here. 05:47.440 --> 05:51.480 So this does solve those edges and not the flow here. 05:52.580 --> 05:55.290 To solve those etches offers one more just down here. 05:55.730 --> 06:02.240 So now we test that again we'll see that the flow goes around there nicely and round here nicely says 06:02.240 --> 06:07.760 another way that you can go around and reet apologize and neat things up. 06:07.760 --> 06:15.110 Now did say there was another example where you will find a basically a five foot pole going on and 06:15.110 --> 06:18.010 that is when you decide to extrude something. 06:18.260 --> 06:23.510 So here we have a series of quartz we've gone into the 3D realm here. 06:23.510 --> 06:31.680 And if I extrude that up if we do a little count here one two three four five we've got five quads that 06:31.690 --> 06:35.330 are connected to one pole just here. 06:35.330 --> 06:42.230 So it's very important that you realize that just extruding up like this has also broken the flow and 06:42.230 --> 06:45.110 we've generated an edge float around here. 06:45.430 --> 06:48.090 If we look at the very top begot one two three. 06:48.230 --> 06:56.850 And that has essentially terminated the edge flow around the top here where we go one. 06:56.870 --> 06:58.490 And it just doesn't know where to go. 06:58.580 --> 07:02.400 And that's one of the reasons why you can have an edge loop around a plane. 07:02.480 --> 07:08.540 But the moment you convert it into a cube it doesn't like to talk because it doesn't know where to go 07:08.540 --> 07:09.900 around the bottom here. 07:11.890 --> 07:15.890 It doesn't know where to go it doesn't know where to go because there's a poll. 07:16.680 --> 07:24.320 Now if we may to this one at the bottom here in2 So it was just one two three four chords. 07:24.330 --> 07:26.810 We could probably faff about to do that. 07:26.940 --> 07:29.960 We would end up with the edge flow going around the bottom again. 07:30.240 --> 07:35.450 Okay so I'm going to go over to a real example here. 07:35.530 --> 07:41.760 Show We're back over at my human head and it's coming along fine. 07:41.760 --> 07:44.460 There are a couple of things that I do want to sort out. 07:44.460 --> 07:50.670 So one of the first things I'm going to have a look at is this flow around here. 07:50.670 --> 07:57.810 So if I select this edge around here we can see it flows round and down here it stops. 07:57.810 --> 07:58.890 Why does it stop. 07:58.890 --> 08:03.080 But it stops because there's a pole which is this vertex here. 08:03.360 --> 08:06.550 And we've got one two three four five. 08:06.750 --> 08:08.570 So there's a couple of options. 08:08.580 --> 08:10.830 You can and geometry. 08:11.190 --> 08:19.950 You could cut it in with a knife tool or do no no end of things or you can perhaps dissolve some edges 08:19.950 --> 08:21.220 in order to get there. 08:21.240 --> 08:26.060 So let's explore both options whether it's right or wrong at this point in time. 08:26.190 --> 08:29.780 And we just don't know at this early stage of the model. 08:29.790 --> 08:32.090 Sometimes it will be the right thing to do some type of thing. 08:32.100 --> 08:35.150 Are you going to have to go back and dissolve that later on. 08:35.160 --> 08:41.100 So this particular one here I think by cutting through here. 08:41.800 --> 08:47.540 And around there I'm going to hit the space bar and just highlight that okay. 08:47.550 --> 08:51.400 It seems to be going up all the way around to the top. 08:51.460 --> 08:54.890 So Perfect that's regain that loop around there. 08:54.970 --> 09:01.510 But of course when you do something like cutting the question then is have I just moved the problem 09:01.510 --> 09:10.660 onto the next set the adjacent set of polygon So if I go back in time before I put that cut in and just 09:10.660 --> 09:14.590 see if this one hit No that one there's also terminating. 09:14.590 --> 09:18.530 So everything's terminating along all like the bottom of the jaw here. 09:18.640 --> 09:24.690 So getting the knife tool going along here all the way to the edge is not actually breaking any thing 09:24.700 --> 09:29.590 and that's always the concern I would have when using the knife tool because it's very easy to just 09:29.650 --> 09:32.780 shift the problem onto another area. 09:33.160 --> 09:40.470 Now let's have a look at the triangle I've got on top now triangles can be dealt in a number of ways. 09:40.480 --> 09:46.600 I could add even more geometry coming through here cuts through this triangle in a certain way which 09:46.600 --> 09:52.240 would generate quads but it would also give us more geometry and at this point in time I don't feel 09:52.240 --> 10:00.040 I need any more geometry round the top of this head any more geometry itself is unnecessary it's not 10:00.040 --> 10:01.270 defining any detail. 10:01.270 --> 10:02.620 It's a four head. 10:02.620 --> 10:08.830 For a start I mean you could argue at this point in time you know what that's going to be under a hair 10:08.830 --> 10:09.520 line. 10:09.550 --> 10:16.260 No one's ever going to see that even of the face deforms massively during an expressive moment. 10:16.300 --> 10:19.480 It's still not going to be seen as on the hairline. 10:19.750 --> 10:25.270 Then the person who just wants to get everything right inside of you goes well there are going to leave 10:25.270 --> 10:28.510 the triangle there for the sake of it I'll just tidy up. 10:28.570 --> 10:34.270 The other thing of course is it does block this edge loop ball this surrey's fazli Running down here 10:34.480 --> 10:39.840 just stops it in its entirety and I would like that fazli to exist. 10:39.880 --> 10:47.980 So looking closely here are one of the things we can do is merge this together and we can do that by 10:47.980 --> 10:52.460 selecting this edge here and dissolving it. 10:53.050 --> 10:57.700 Okay so what has that done to our flow does our outflow now work. 10:57.730 --> 11:00.190 It doesn't and it doesn't. 11:00.190 --> 11:05.530 Let's just can we edges here make sure one two three four five okay we've got five. 11:05.530 --> 11:07.140 It's not a quad. 11:07.300 --> 11:10.610 So what's it linked to is linked to this one here. 11:10.840 --> 11:14.200 So let's dissolve that hedge as well. 11:14.200 --> 11:16.200 Now let's see what happens. 11:16.240 --> 11:19.180 We should have an edge flow going round. 11:19.180 --> 11:24.520 We do perfectly goes right round the outside of the face and no surprise terminates just under the jaw 11:24.520 --> 11:26.470 line here as the other one did. 11:26.530 --> 11:29.530 And if we look closely it's one two three four five. 11:29.530 --> 11:32.260 There's another angle on down the bottom there. 11:32.500 --> 11:36.010 So let's go back up to the top and just check a few of the things. 11:36.010 --> 11:37.940 Do we still have loops running around there. 11:37.990 --> 11:41.400 Yep and we can see here this link this link. 11:41.410 --> 11:45.220 This loop kinks in rather quickly. 11:45.220 --> 11:47.440 And that's girn of course from defamation. 11:47.440 --> 11:50.770 If we're not careful uneven so we can grab that. 11:50.860 --> 11:55.660 And I haven't I'm not really sure and moving that in the 3D world it's always best to check it from 11:55.660 --> 12:00.480 several angles just to make it a bit more even as it flows round. 12:00.600 --> 12:06.860 Otherwise some of these look a bit crooked and they could certainly be much support even as they flow 12:06.860 --> 12:08.500 around and define the shape. 12:08.590 --> 12:11.050 Unless of course it is a bumpy head so let's just try that. 12:11.050 --> 12:13.620 Now we move stuff that works around there. 12:13.630 --> 12:18.500 These ones are working and terminating at the top as expected. 12:18.700 --> 12:19.110 Yeah. 12:19.180 --> 12:21.050 I'm absolutely happy with that. 12:21.130 --> 12:24.130 And of course now comes a challenge. 12:25.650 --> 12:30.110 I'd like you to go ahead and define the five main faced groups. 12:30.150 --> 12:34.910 Now you may already have done this in which case it would give you an opportunity to refine them but 12:34.910 --> 12:41.400 to go ahead and define the five main face groups that make up the face and don't worry if you if you're 12:41.400 --> 12:46.890 not quite sure I'll be showing you through them in a few moments before I say Paul's video. 12:46.920 --> 12:49.760 Now do expect to make mistakes. 12:49.860 --> 12:50.640 Go with it. 12:50.700 --> 12:59.220 And remember to save often or even save as once you've got one area nailed and be prepared to start 12:59.220 --> 13:02.800 over from the base head a few times. 13:02.820 --> 13:06.200 If you make a right mess of it but don't worry. 13:06.200 --> 13:10.570 This all happens especially when you're new to face topology. 13:10.860 --> 13:16.230 And finally of course we haven't done it yet but create the nose allergist a little hint there about 13:16.230 --> 13:22.680 the extruding creating the five pole that we can use for the nose. 13:22.680 --> 13:24.750 Perhaps that's just one way of making it. 13:24.750 --> 13:25.590 Of course. 13:25.590 --> 13:31.170 Now before I say pause I just want to define those five main areas for you see you know what you're 13:31.170 --> 13:32.370 looking at. 13:32.820 --> 13:37.950 And here we go we have a basic face in front of us and I have colour coded them all. 13:38.160 --> 13:43.360 Hopefully this is clear for everybody including those who might be color-blind. 13:43.380 --> 13:47.560 No you can't distinguish between green and red often so I haven't included red. 13:47.610 --> 13:50.550 We've got a yellow border running round the entire face. 13:50.550 --> 13:53.390 Obviously we've got a Rest of a head here to do. 13:53.490 --> 13:57.150 But I'm only focussed on the face at the moment. 13:57.150 --> 14:00.820 We've got the loops running round the eyes themselves. 14:00.840 --> 14:05.490 We've got the loop that goes across the bridge of the nose and round to the chin. 14:05.490 --> 14:10.560 We've got the one that goes around the nose and it'll be interesting to see how you guys come about 14:10.890 --> 14:13.130 making that nose topology. 14:13.530 --> 14:17.650 And then we've got the ones that run around the mouth and the lips themselves. 14:17.730 --> 14:21.620 So there we go off flicked this round into front view. 14:22.650 --> 14:25.620 And we're in orthographic mode so you can see what's going on. 14:25.790 --> 14:29.280 And they go there's your reference material that you can use as a guide. 14:29.300 --> 14:37.070 Incidentally you can see we've got polls five polls rerouting our model as it goes round here. 14:37.070 --> 14:39.120 We split away from one another. 14:39.120 --> 14:45.950 There's a five poll on the right hand side of the eye here on the inside of the eye where the nose comes 14:45.950 --> 14:52.350 down where the nose actually is where this breaks away there's a five pole here a five pole. 14:52.370 --> 14:55.840 There you can start to see them all over the place. 14:55.850 --> 15:01.800 When you start looking in fact there's a three poll just here on the right hand side. 15:02.240 --> 15:04.640 Okay so there's one final thing here. 15:04.680 --> 15:11.720 I want to show you guys to help you when it comes to creating these areas where there are five. 15:11.750 --> 15:13.470 All hang on a minute. 15:13.820 --> 15:16.670 I've got an example bit of material here. 15:16.670 --> 15:20.050 It has got a whopping great big N gone sat here. 15:20.240 --> 15:21.550 Mass not in condition. 15:21.590 --> 15:24.570 You guys actually just breaks what I've just told you. 15:24.770 --> 15:26.260 So I'm going to have to sort that out. 15:26.330 --> 15:31.490 And also just like to show you how to get this cut sort of curvy effect going on that's called enabling 15:31.520 --> 15:33.210 the cage. 15:33.230 --> 15:39.470 I don't want the end panel there I actually want the properties panel so I'm going to have to do a bit 15:39.470 --> 15:42.100 of manipulation with the windows here. 15:42.110 --> 15:43.670 And let's go to the modifiers. 15:43.670 --> 15:51.230 So the subsurface modify here I have got turned on on this mask that I've made I've got turned on the 15:51.230 --> 15:57.580 cage which is the mesh data sort of triangle that we've got there. 15:57.680 --> 16:03.060 And when we click on that you can see that all of a sudden everything ends up a lot smoother. 16:03.140 --> 16:10.280 And I like that on when we're looking at it just looks better and of course you can turn off the smooth 16:10.340 --> 16:15.380 whilst in edit mode as well so the subsurface modifiers not shown. 16:15.890 --> 16:21.940 You can't have that not shown and the cage turned on at the same time. 16:22.010 --> 16:26.760 So I'm going to turn both of those off so I can actually reroute this. 16:26.780 --> 16:32.180 This particular line this face loop running around here so I can demonstrate a point for us. 16:32.210 --> 16:39.200 I want to make something to add in a face loop there grabbing the knife tool join those two up. 16:39.260 --> 16:44.110 Now hopefully I have not broken any Fink so let's us have a look. 16:44.130 --> 16:47.050 A facelift running around men this face Loopt should continue round. 16:47.060 --> 16:48.170 Perfect. 16:48.170 --> 16:52.190 So what I wanted to demonstrate here is the two changes in direction. 16:52.190 --> 16:58.100 The if we switch to edge mode here we have an I'm going to turn on the smoothness again because it just 16:58.100 --> 16:59.440 flows a bit better. 16:59.450 --> 17:03.990 We've got this edge floating around here and then it's broken as it flows around here. 17:04.130 --> 17:13.490 It's broken again and flows underneath because we have these five faces here and these five faces here. 17:13.490 --> 17:21.440 Now you'll notice that that particular Paul of the five pole there and the five pole here both lay on 17:21.470 --> 17:25.270 the same age as it flows round. 17:25.700 --> 17:29.410 And that is important that they are located on the same edge. 17:29.450 --> 17:35.990 If it's going to control the loop around in a circuit like that so bear that in mind as you go ahead 17:36.020 --> 17:40.010 and construct to your head or you're certainly your face in this point. 17:40.130 --> 17:45.230 Now usually I'd say pause the video now and go do the challenge. 17:45.230 --> 17:49.420 Unfortunately I'm not going to have enough time to K3 of a challenge if I do that. 17:49.460 --> 17:54.750 So go ahead do the challenge and I will see you guys in the next lecture.