WEBVTT 00:00.800 --> 00:02.330 Welcome to introduction. 00:02.350 --> 00:08.940 T you've V unwrapping in this video you will no longer ask what you ve stands for. 00:09.260 --> 00:16.040 We'll do an overview of the mapping that in the upcoming lectures and understand that will be creating 00:16.040 --> 00:22.150 these maps from scratch and then using them a gain to speed up further work flow. 00:22.220 --> 00:28.070 So we've had this section so far where we've looked everything emack crow how the pieces are all fitting 00:28.070 --> 00:32.100 together what the overall building or interior is going to look like. 00:32.210 --> 00:36.470 And now's the time to start zooming in on a bit of detail. 00:36.500 --> 00:38.620 So what does it usually mean. 00:38.910 --> 00:45.500 Well X Y and Z are already used for the Cold War donat system with the in blender itself and you and 00:45.500 --> 00:50.570 V are like the x and y coordinates of an image. 00:50.840 --> 00:59.510 So you v mapping is the process of projecting a 2D image on to a 3D model's surface and the U.S. map 00:59.510 --> 01:07.280 itself as we'll soon see has so as the geometry as the map and it's placed upon the picture. 01:08.000 --> 01:11.480 So let's have a quick look at something we're all familiar with. 01:11.540 --> 01:13.340 A map of the earth. 01:13.430 --> 01:18.740 And if you're interested in seeing more images like this of our wonderful planets and indeed some other 01:18.770 --> 01:22.850 wonderful photographs I've gotten this from the nassr website. 01:22.850 --> 01:28.850 All of their images are free to use so if you actually want to make a planet Earth a model of that and 01:28.850 --> 01:33.590 will be doing something very basic like that in a few moments then of course that's the place to go 01:33.590 --> 01:39.440 to get these wonderful textures from and remember the word texture or image is interchangeable when 01:39.440 --> 01:40.820 it comes to blender. 01:40.820 --> 01:47.020 Now one of the problems with a map of the earth is Antarctica really isn't that big. 01:47.300 --> 01:50.270 And those Greenland Greenlands actually tiny. 01:50.420 --> 01:54.010 So the South Pole is Antarctica right at the bottom there. 01:54.020 --> 01:58.460 Now obviously that is a 2D representation of the earth. 01:58.460 --> 02:06.080 So one of the dramatic things to highlight here is mapping can cause distortion in image because that 02:06.080 --> 02:10.790 image then has to be compressed onto a 3-d shape. 02:10.790 --> 02:17.000 Now we all know that the earth is flat like this it in fact looks more like this a sphere or spherical 02:17.030 --> 02:17.900 in nature. 02:17.900 --> 02:24.700 So you ve tells that texture how to apply itself to a 3D surface. 02:25.160 --> 02:26.720 So what do these maps do. 02:26.720 --> 02:32.210 Well they do lots of things what we looked at a few moments ago could be called a diffused map which 02:32.270 --> 02:36.320 is creating the illusion of colour on the surface. 02:36.320 --> 02:42.410 In fact it is adding colour on the surface in this case but they also create the illusion of surface 02:42.410 --> 02:47.170 detail by mapping parts of an image to the geometry on our model. 02:47.210 --> 02:53.990 They could be applied automatically which is great for your basic models and that generates a U.S. map. 02:54.990 --> 02:59.570 But generating euv map yourself does give the best results. 02:59.670 --> 03:04.320 So two of the basic maps that will be colour coming up in the near. 03:07.550 --> 03:12.890 So two of the basic maps now that are coming up in the next couple of lectures we've got a diffuse map 03:12.890 --> 03:15.770 which is the base colour of the geometry itself. 03:15.770 --> 03:23.840 So up until this point we've really only dealt with making either individual faces of a certain colour 03:23.870 --> 03:30.080 or applying a certain material to them or we've been dealing with the whole model having the same material 03:30.080 --> 03:31.080 applied to it. 03:31.340 --> 03:39.140 Now the great thing with a map is it allows us to only use one material but use a texture or an image 03:39.440 --> 03:43.240 in order to control the diffuse colour. 03:43.410 --> 03:46.060 Another one is a bump map. 03:46.220 --> 03:50.240 Now that tells the shader how to react with light. 03:50.300 --> 03:54.980 So a quick example here we've got this rough moon. 03:54.980 --> 03:57.890 I'm going to call it a moon and we've got this one. 03:58.590 --> 04:04.770 Now apart from the slight lighting differences they're almost exactly the same but you can you tell 04:04.770 --> 04:06.020 which ones which. 04:06.060 --> 04:12.260 Probably not unless you start looking at some of the micro details in the shadows. 04:12.420 --> 04:18.630 So we have this one which is the high polygon version in fact it's one million triangles just over one 04:18.630 --> 04:19.290 million. 04:19.290 --> 04:24.050 It's rendered with a thousand samples and rendered a full ten ATP. 04:24.060 --> 04:25.880 So it took a little while to render. 04:26.010 --> 04:32.130 In fact it rendered at seven minutes four seconds in terms of its render time. 04:32.160 --> 04:35.290 Now instead we go down to the low poly model. 04:35.400 --> 04:39.630 If you look around the edge you can see that it's a bit jagged around the edge. 04:39.630 --> 04:46.860 In fact this whole model is only a thousand triangles again rounded with a thousand samples and rendered 04:46.980 --> 04:48.860 at 10 80. 04:49.260 --> 04:52.650 Now that rendered in five minutes four seconds. 04:52.650 --> 04:57.180 So that reduced our render time by around 20 percent. 04:57.180 --> 05:04.020 Now what that means for us in blender is that we can make a highly detailed model bake that detail down 05:04.020 --> 05:05.190 to an image. 05:05.200 --> 05:10.120 Apply that image back to the model and save a shed load on our rendering time. 05:10.170 --> 05:16.080 Now on the one off image it wouldn't be worth it if we were rendering that image over and over again 05:16.080 --> 05:22.440 like on an animation then suddenly it becomes werefor instead of spending 10 hours rendering you'd only 05:22.440 --> 05:24.660 spend eight or maybe less who knows. 05:24.660 --> 05:25.770 Depends what you're rendering on. 05:25.920 --> 05:31.320 Now of course this has the added benefit if you will rendering diffuse maps and normal maps and bump 05:31.320 --> 05:33.810 maps and all these other type of maps. 05:33.810 --> 05:40.650 We can then reassemble our whole model externally to blender as well so this has a benefit both within 05:40.650 --> 05:45.200 blender and when making assets that you're using elsewhere. 05:45.480 --> 05:50.540 So let's now go make a very basic U.S. map over in blender. 05:57.590 --> 06:03.350 Okay so go ahead and open up a brand new blend far making sure you've saved and committed the work you're 06:03.350 --> 06:04.620 currently on. 06:04.820 --> 06:07.950 So I'm going to start off with a default blender seem like this. 06:08.060 --> 06:12.820 I'm going to remove the cube from it and add a u v sphere. 06:12.830 --> 06:18.370 The name may sound familiar I don't know if there's any direct link between Eevee maps and Yuri spheres. 06:18.390 --> 06:19.400 But here we go. 06:19.640 --> 06:27.030 Now in order to make this a bit more easy to see I'm going to lower the segment count quite significantly. 06:27.170 --> 06:31.250 And the same with the ring so it's going to be a very low poly globe. 06:31.370 --> 06:38.030 Now I know this is a bit abstract since we're working on an interior but I think a globe is a great 06:38.030 --> 06:44.900 way of representing a map and then applying it in 3D and understanding how the relation works between 06:44.900 --> 06:45.810 the two. 06:45.870 --> 06:50.060 We're have more detailed interior models coming up soon as well. 06:50.540 --> 06:54.830 I'm going to make the size of my globe just a little larger than four. 06:55.890 --> 06:56.940 So make it five. 06:56.950 --> 06:58.820 Going to make it a little larger than one has. 06:58.920 --> 07:01.080 One is boring for a Globe five. 07:01.110 --> 07:02.580 It's an epic globe. 07:02.730 --> 07:06.420 And under the tunnels smooth shading So it's as smooth as it can possibly be. 07:06.420 --> 07:10.140 Now this is currently got a default material on it which is fine. 07:10.140 --> 07:16.840 I'm going to add new material and call it Earth because that's the picture I'm going to use. 07:16.980 --> 07:19.140 I'm currently using nodes which is great. 07:19.140 --> 07:23.480 Now become apparent why that's important in a few moments at colour. 07:23.640 --> 07:30.440 I'm going to set the colour to use a picture for the colour so I can go here and use image texture. 07:31.280 --> 07:34.050 Click on that little dot and then Image texture. 07:34.460 --> 07:42.210 And I'm going to select from the game asset pack sections the world diffuse Naxal map. 07:42.440 --> 07:43.390 And there we go. 07:43.400 --> 07:45.590 This should now be showing. 07:45.680 --> 07:50.750 He says the map of the worlds going to go to material and it's not. 07:50.930 --> 07:51.920 And why isn't it. 07:51.920 --> 07:52.450 Why. 07:52.460 --> 07:53.540 Why can't we see it. 07:53.720 --> 07:58.710 It's because blender doesn't actually know how to map that image to this object. 07:58.730 --> 08:04.940 So we need to tell it and we tell blender by unwrapping our 3-d objects. 08:04.960 --> 08:08.740 We go from a 3-d object to a two day object. 08:08.900 --> 08:12.390 So let's drag out and create a u v image editor. 08:14.280 --> 08:23.190 Hop into edit mode over here on our globe on our 3-d object in the 3-d window and we can go meche and 08:23.250 --> 08:29.520 unwrap and we get a series of options you see the shortcut key there is you know we just go ahead and 08:29.710 --> 08:35.760 unwrap now there isn't an image properly applied yet but it's also managed to grab that because it's 08:35.760 --> 08:40.690 using the image itself and it knows it's a movie mapped image. 08:40.830 --> 08:47.850 We can see that it's mapped to every face and that's not what we want and that is essentially what this 08:48.120 --> 08:53.390 square in front of us is showing showing us that the whole image whatever the image happens to be assigned. 08:53.490 --> 08:57.990 You map it to every single face and that is no good for this example. 08:58.230 --> 09:02.670 So let's go ahead and open up the Emmy so we can see what's happening and because it's already loaded 09:02.670 --> 09:08.700 into memory we can click the image drop down or drop up in this case since it's at the bottom and select 09:08.700 --> 09:13.380 the image you are going to have to scroll out a little here and we can see the aspects of the race image 09:13.410 --> 09:15.080 is quite wide. 09:15.120 --> 09:16.860 It's got quite a wide array. 09:17.190 --> 09:24.630 And now and you may need to do this a few times during doing any unwrap we're just going to reset the 09:24.630 --> 09:27.600 unwrap by here in New ingoing reset. 09:27.690 --> 09:32.760 And that means that any of the previous settings stored when unwrapping will have been white. 09:32.760 --> 09:37.150 Now I'm going to speed things up here when I'm going to go into too detail about altering the you v 09:37.170 --> 09:44.190 map but actually the generation we can get away here with going a sphere projection because ultimately 09:44.310 --> 09:49.840 we're mapping it to a sphere is not a complicated object like a face or something like that. 09:50.010 --> 09:55.740 Now we can see that it's not got it right not straight away anyway it's truncated half of the America 09:55.770 --> 10:00.140 and the Far East and Africa has gone really wide on us. 10:00.180 --> 10:01.590 That is no good. 10:01.620 --> 10:08.220 So what we can do here is go over to the U.S. image enter and use the controls much like we would if 10:08.220 --> 10:10.960 this were a mesh that we were altering. 10:11.010 --> 10:16.800 So what we can do there is literally scale it with the ESC key making sure that this area is selected 10:16.800 --> 10:18.470 and hitting the esky of course. 10:18.480 --> 10:21.200 And remember we can it accidentally invert it will. 10:21.210 --> 10:23.440 Which will make it all upside down. 10:23.550 --> 10:29.220 But here we go we can scale it out as the right sort of height and then we can scale the width as well 10:29.250 --> 10:35.540 with S and X so X is across an y is up when it comes to your pictures. 10:35.610 --> 10:41.840 And then we can use the G key and move it about so all of these are very much like we used to. 10:41.850 --> 10:49.170 You can also grab the individual vertices representing this 3-d object and move them as well to straighten 10:49.170 --> 10:50.700 out the u v map. 10:50.700 --> 10:57.960 If you wanted to now remember we're telling lender at this point which one of the faces is represented 10:57.990 --> 11:02.520 on the image so we can move things about and really skew up the image. 11:02.520 --> 11:07.610 If we're not careful so we do have to be careful when we're moving these about. 11:07.770 --> 11:14.550 A time you'll be mapping to an image like this or even generating your own image in which case the alignment 11:14.550 --> 11:17.910 with it doesn't matter because you're creating everything. 11:17.910 --> 11:21.720 Now we don't have to worry about this disappearing into the aether over here. 11:21.720 --> 11:25.620 Is she going to warp around to this side of the image and continue. 11:25.680 --> 11:27.570 So I'm happy with that. 11:27.600 --> 11:30.660 Now let's have a look at our globe. 11:30.660 --> 11:34.010 How is that turnout going to hop out of edit mode so I can look around. 11:34.200 --> 11:36.550 It's a little jagged around the edges. 11:36.600 --> 11:41.670 The polls seem to be roughly in the right place which is not bad for a rough unwrap. 11:41.670 --> 11:46.190 Occasionally these things can go completely adrift and look horrible. 11:46.290 --> 11:47.280 But that's not bad. 11:47.310 --> 11:49.830 Unwrap for such a low poly model. 11:50.270 --> 11:53.870 OK I remember earlier I said that using nose was important. 11:54.030 --> 11:59.700 Well it is if we don't want to create a separate material when working with cycles and blender render 11:59.940 --> 12:02.280 because sometimes you may want to hop between the two. 12:02.280 --> 12:09.630 So here's a little tip for you because psychos uses notes by default when we switch over to blender 12:09.630 --> 12:10.900 render. 12:10.920 --> 12:18.000 We can turn use notes off we see at the moment so is earth material node and then no nodes are associated 12:18.000 --> 12:19.030 with the blender end. 12:19.200 --> 12:24.520 And that's fine if we turn used nodes off this button next to the material name. 12:24.720 --> 12:27.200 We say you shade those to render the material. 12:27.200 --> 12:32.440 If we click that it disappears we can't see the image anymore and that's fine. 12:32.550 --> 12:38.880 We can also turn this off by the way under the node editor itself as a little thing on here on the IMI 12:39.180 --> 12:44.240 on the node Ed header that we can tick and untuck use notes. 12:44.250 --> 12:49.950 Now what you want to go back to cycles you need to remember to read tic that or press this button again. 12:50.100 --> 12:55.740 Now blend a render we can assign a picture to the few straightaway we need to do it by the form of a 12:55.740 --> 12:56.530 texture. 12:56.670 --> 13:03.490 Now we've already unwrapped our model so it doesn't need anymore unwrapping a special done. 13:03.510 --> 13:08.440 All it requires is a texture applied we need to create a new texture. 13:08.660 --> 13:10.120 Add to that texture. 13:10.120 --> 13:13.560 Apply that image that we've already got in memory so we can click on. 13:13.740 --> 13:19.990 Drop down or in this case drop up a hand click on mean nassr world diffused image and there we go it 13:20.020 --> 13:27.240 straight on a couple of things I would do to change this straight away is the lighting itself is not 13:27.240 --> 13:32.660 very good since going to the lighting properties and put sun on it is the planet Earth after all. 13:32.760 --> 13:36.200 But we're not going to mess around with any of the settings for the sun. 13:36.330 --> 13:42.330 And equally if we're in that cycles render of course the image now goes white because we haven't selected 13:42.330 --> 13:46.920 use nodes but we don't select use nodes on the lights we select on the material. 13:46.950 --> 13:53.740 If we start our are not sure about this but I think if I use nodes here and I go back to a blender render. 13:54.240 --> 13:55.650 Oh it does still work. 13:55.650 --> 13:56.870 Okay that is good. 13:56.880 --> 14:00.840 I thought it might not if we switch the lighting across sphere here. 14:00.870 --> 14:07.860 We need to go to the materials option and click use nodes again and the object is back again. 14:07.920 --> 14:08.800 Brilliant. 14:08.910 --> 14:11.800 I think it's time for a small challenge for you guys. 14:13.990 --> 14:17.690 Okay I would like you to add a wall texture. 14:17.860 --> 14:21.850 So use your own all the wall texture in the asset pack. 14:21.850 --> 14:24.790 It doesn't matter which one you use. 14:24.850 --> 14:31.090 You ve unwrap your basic wall so it's gonna be that basic wall piece without the window in it or anything 14:31.090 --> 14:31.840 else CAN START. 14:31.840 --> 14:36.270 Nice and simple with this unwrapping apply the texture to the wall. 14:36.280 --> 14:39.510 In both cycles and blend a render. 14:40.000 --> 14:42.070 If you find your texture is 90 degrees out. 14:42.070 --> 14:45.430 Try rotating the UV mesh. 14:45.430 --> 14:51.850 Now I must emphasize at this point as long as there is a texture on the mesh in both blender render 14:51.850 --> 14:53.980 and cycles you have succeeded. 14:53.980 --> 15:01.090 This challenge will nail down the actual quality of the unwrapping later on in this section pause the 15:01.090 --> 15:03.220 video now and give that a go. 15:05.370 --> 15:06.870 OK guys welcome back. 15:06.940 --> 15:11.960 Let's go map our wall texture to our wall and hop on over in a blender. 15:13.140 --> 15:20.610 Okay so I've opened up my wall my elodie a wall and we're going to start adding some detail to it. 15:20.640 --> 15:26.650 So this is just going to be text to details so still gonna remain an elodie wall or at this point and 15:26.650 --> 15:28.130 melody a wall. 15:28.290 --> 15:30.100 So no extra geometry involved. 15:30.270 --> 15:35.410 So I'm going to go straight to my materials tab and add new material name the wall. 15:35.940 --> 15:39.870 Following that I'm going to not colour it in white or slightly off white. 15:39.870 --> 15:43.500 I am going to use an image texture to define the colour. 15:43.500 --> 15:49.680 I'm going to go ahead and open up go to the asset pack and open up this one called cinder block. 15:50.130 --> 15:52.640 Now that that's opened it needs to. 15:52.740 --> 15:55.090 We need to tell blender how it's mat. 15:55.170 --> 15:59.210 So I'm going to close down at my tool shelf and properties of the 3D editor. 15:59.370 --> 16:05.490 I'm also going to add I've moved across switched my viewport rendering to material so the lighting doesn't 16:05.490 --> 16:06.000 matter. 16:06.120 --> 16:08.930 We will need lighting by the way to see in blender end. 16:08.970 --> 16:10.440 Otherwise it will be black. 16:10.620 --> 16:17.050 So before I hop into edit mode I'm just going to plonk a sunlamp in the scene and sunlamp. 16:17.070 --> 16:21.790 The direction doesn't really matter where it's placed as a matter only the direction counts. 16:21.930 --> 16:24.170 I think that will be okay. 16:24.210 --> 16:26.860 I'll literally hop into rended both quickly. 16:27.000 --> 16:28.570 Yeah that looks absolutely fine. 16:28.920 --> 16:31.380 So let's hop into edit mode on this. 16:31.380 --> 16:37.890 Everything is selected by default and I'm going to just do a basic unwrapped nothing special and we'll 16:37.890 --> 16:40.530 see how that turns out. 16:40.620 --> 16:42.120 So that's looking pretty good. 16:42.120 --> 16:46.240 We just need to go to the picture down here at the cinder block. 16:46.280 --> 16:48.090 Also looking pretty good. 16:48.110 --> 16:49.410 How are we in material mode. 16:49.410 --> 16:50.000 No we're not. 16:50.000 --> 16:51.350 Let's have a look. 16:51.360 --> 16:54.540 Our AK So we've got vats at 90 degrees. 16:54.540 --> 16:56.880 How's the side and this side is right. 16:56.880 --> 16:58.590 How is the edge. 16:58.980 --> 16:59.850 Okay that's good. 16:59.850 --> 17:07.180 We can see here looking at the edge on the u v not on TV Surrey on the 3D view here. 17:07.280 --> 17:12.990 It's compressed because the whole edge has been compressed so this whole image has been compressed onto 17:12.990 --> 17:14.110 the edge itself. 17:14.160 --> 17:22.660 It looks so surely because of the way the more time line is still pretty much aligned in the right place. 17:22.680 --> 17:27.900 Not a great alignment but that will do for this initial initial go at it. 17:27.900 --> 17:30.130 That's really good. 17:30.170 --> 17:32.260 Well it doesn't require much in the way of fixing. 17:32.370 --> 17:36.080 Now down this is a bit wonky here are not happy with that. 17:36.180 --> 17:42.150 And of course what we can do here is select that face making sure in face select and then we're not 17:42.150 --> 17:47.640 going to rotate the face in the 3D view that causes all sorts of horrible artefacts but because that's 17:47.640 --> 17:55.020 now selected in the U.S. image too we can actually rotate it and we can see it's kind of granular granulated 17:55.050 --> 17:57.810 at the moment so we can go round in notches. 17:57.810 --> 18:05.010 I'm just going to type in 90 because it is 90 and press centre that should have sorted that out. 18:05.010 --> 18:05.570 Perfect. 18:05.570 --> 18:09.000 So we've got our first wall piece absolutely sorted. 18:09.030 --> 18:13.410 I really don't care about this bottom piece am at the moment. 18:13.410 --> 18:15.180 I don't care about it. 18:15.210 --> 18:18.880 I might have to make it a separate piece actually because these are stacked on top of one another. 18:18.900 --> 18:20.160 It's going to make a line. 18:20.190 --> 18:24.270 Now whether or not that line makes it look odd. 18:24.450 --> 18:26.630 I will have to see later on. 18:27.370 --> 18:29.590 Be lean about it and check that it works. 18:29.610 --> 18:30.750 So that's that texture. 18:30.750 --> 18:33.490 Applied in cycles and it's looking pretty good. 18:33.600 --> 18:38.550 If we go into the full view port rendering we can see that that is coming across really well and that's 18:38.550 --> 18:40.640 just a diffuse texture. 18:40.710 --> 18:45.180 We now need to make sure that it's working in a blender and a and a switch across the blender and in 18:45.180 --> 18:47.290 the middle cereal's propertys. 18:47.430 --> 18:50.340 I need to make sure it's not using notes. 18:51.220 --> 18:58.890 So there we go we can now see our objects and make a new texture and then assign an image to that section 18:58.900 --> 19:00.050 because it's still in memory. 19:00.050 --> 19:03.220 I can just select it there and there we go. 19:03.230 --> 19:09.070 Now obviously with Blender render the spec clarity is automatically applied as well so we go to the 19:09.070 --> 19:13.310 materials and go down in there so we can see that the intensity is quite high. 19:13.450 --> 19:18.900 If we go and turn that down we'll end up with a much lower sheyna to the wall. 19:19.030 --> 19:23.760 What was on generally shiny unless they've got gloss paint on them or they are wet. 19:23.770 --> 19:28.870 And in this case I want Neve so often the intensity is going to turn it right down to nothing. 19:28.870 --> 19:31.640 It's a fall diffuse texture. 19:31.660 --> 19:33.100 How did you guys get on. 19:33.100 --> 19:36.440 Did you manage to map a basic image to the wall. 19:36.640 --> 19:38.450 Did you use your own texture. 19:38.470 --> 19:40.440 I love to see what you guys come up with. 19:40.440 --> 19:43.990 And as always please share your work in the discussions. 19:44.350 --> 19:47.400 And I will see you guys in the next lecture.