WEBVTT 1 00:00:00.000 --> 00:00:01.766 So we've created our pin and 2 00:00:01.766 --> 00:00:05.766 we're moving on to the bowling ball! So welcome 3 00:00:05.766 --> 00:00:08.433 to Choosing the Right Sphere! 4 00:00:08.433 --> 00:00:12.400 So in this video we're going to learn that the 5 00:00:12.400 --> 00:00:16.400 sphere is just the defining shape. The mesh topology 6 00:00:16.400 --> 00:00:20.400 of that sphere can vary greatly, 7 00:00:20.400 --> 00:00:24.400 and, just for example here, we can have a UV sphere, 8 00:00:24.400 --> 00:00:28.400 an ico sphere, and even a cube. 9 00:00:28.400 --> 00:00:32.400 And we'll be taking a brief look at the subdivision modifier. 10 00:00:32.400 --> 00:00:36.400 So let's hop over into Blender now and 11 00:00:36.400 --> 00:00:38.466 experience some of these first hand. 12 00:00:38.466 --> 00:00:40.800 OK, so welcome back into Blender! 13 00:00:40.800 --> 00:00:44.800 I have loaded up a default file. If you've still got a previous project 14 00:00:44.800 --> 00:00:48.800 open do remember to save it, before closing it and moving on to this. 15 00:00:49.366 --> 00:00:52.233 Let's start, not with the cube, we'll go on to that in a 16 00:00:52.233 --> 00:00:56.233 moment, and we will add a Mesh 17 00:00:56.233 --> 00:01:00.233 object in Object Mode, that is a UV Sphere. Let's 18 00:01:00.233 --> 00:01:04.233 take a look at that! And before we do anything else, let's boil it 19 00:01:04.233 --> 00:01:08.233 down to its fundamentals. How is it made up? So let's have a look over 20 00:01:08.233 --> 00:01:12.233 here in the Operator Panel, so we can see 21 00:01:12.233 --> 00:01:16.233 it has 32 segments. Let's play with that, let's move it up and down! 22 00:01:16.233 --> 00:01:20.233 Excellent! So we can see that's changing the vertical ones, that's a bit like a 23 00:01:20.233 --> 00:01:24.233 segment of an orange, so that's a good way of remembering that. And the rings... 24 00:01:24.233 --> 00:01:28.233 Ah, there we go, the rings define how many are going around 25 00:01:28.233 --> 00:01:32.233 the surface around here in a circle. So 26 00:01:32.233 --> 00:01:36.233 we've got our rings there and our segments coming vertically, and the rings are horizontal lines 27 00:01:36.233 --> 00:01:40.233 going around. Latitude and longitude I suppose, much like the 28 00:01:40.233 --> 00:01:44.233 Earth. So if we boil this down to its very basics, so it can only have 29 00:01:44.233 --> 00:01:48.233 a minimum of 3 segments and 3 rings, we can see 30 00:01:48.233 --> 00:01:52.233 that's what it looks like at its simplest form, 31 00:01:52.233 --> 00:01:56.233 so some sort of diamond or something along those lines. 32 00:01:56.233 --> 00:02:00.233 And as we increase the segments, it can get very very 33 00:02:00.233 --> 00:02:04.233 smooth and detailed, but you end up with 34 00:02:04.233 --> 00:02:08.233 a stonking great bit of geometry there. That's 35 00:02:08.233 --> 00:02:12.233 64 thousand faces, 130 thousand 36 00:02:12.233 --> 00:02:16.233 triangles, so that's a pretty high def sphere. Usually you 37 00:02:16.233 --> 00:02:20.233 would not be modeling anywhere near that, so we'll just set that 38 00:02:20.233 --> 00:02:24.233 back to where it was before at 32 and 16, and we 39 00:02:24.233 --> 00:02:28.233 can adjust the radius here to whatever size we want, 40 00:02:28.233 --> 00:02:32.233 as always. I'm going to leave that at 1. So I'm going to leave that on 41 00:02:32.233 --> 00:02:36.233 our view, I'm going to open up the Outliner here, 42 00:02:36.233 --> 00:02:40.233 and I'm just going to hide that sphere from 43 00:02:40.233 --> 00:02:44.233 view, so we can open it up again in a moment. So that's that object created! 44 00:02:44.233 --> 00:02:48.233 Let's now play with another type of sphere, 45 00:02:48.233 --> 00:02:52.233 an Ico Sphere. So an Ico Sphere, lets 46 00:02:52.233 --> 00:02:56.233 go down to the basics. So we've got Subdivision here 47 00:02:56.233 --> 00:03:00.233 in the Operator Panel, let's turn that right down as low as it will go. OK, so 48 00:03:00.233 --> 00:03:04.233 let's inspect it, let's move around, and we can see quite clearly 49 00:03:04.233 --> 00:03:08.233 that this is a spherical like object 50 00:03:08.233 --> 00:03:12.233 that is made up of triangles, and the more 51 00:03:12.233 --> 00:03:16.233 triangles there are, the more detailed and more spherical 52 00:03:16.233 --> 00:03:20.233 it becomes. But it's always triangles, so the entire surface 53 00:03:20.233 --> 00:03:24.233 is completely even and divided with these triangles. 54 00:03:24.233 --> 00:03:28.233 However, that can cause problems 55 00:03:28.233 --> 00:03:32.233 with your geometry later on, because there's not defining edge 56 00:03:32.233 --> 00:03:36.233 loops on that, whereas with the UV Sphere there is. So 57 00:03:36.233 --> 00:03:40.233 let's close off Icosphere. So we've experienced those two. I'm 58 00:03:40.233 --> 00:03:44.233 just going to up that back to about 3 or 4. 59 00:03:44.233 --> 00:03:48.233 Yeah, that's quite high def there, we'll leave that there. So let's hide that one. 60 00:03:48.233 --> 00:03:52.233 And then, I mentioned a Cube! 61 00:03:52.233 --> 00:03:56.233 And most of you were probably thinking, what's this guy on? Is he off 62 00:03:56.233 --> 00:04:00.233 his rocker? That is not spherical! Not yet, 63 00:04:00.233 --> 00:04:04.233 so much like an Ico Sphere is made 64 00:04:04.233 --> 00:04:08.233 up of a series of triangles, if we 65 00:04:08.233 --> 00:04:12.233 subdivide this cube, then 66 00:04:12.233 --> 00:04:16.233 you actually end up with something that's rather spherical. 67 00:04:16.233 --> 00:04:20.233 And this is a modifier that we'll use quite a bit, later on, 68 00:04:20.233 --> 00:04:24.233 but I just want to hint on it now, because it's a very powerful modifier 69 00:04:24.233 --> 00:04:28.233 that does come with some constraints. So if we hit the Modifier 70 00:04:28.233 --> 00:04:32.233 tab up here, in the Properties 71 00:04:32.233 --> 00:04:36.233 Pane, and Add a Modifier of type, 72 00:04:36.233 --> 00:04:40.233 here we go, Subdivision 73 00:04:40.233 --> 00:04:44.233 Surface. So it's in our... Oh, gone of there! ...in the Generate, 74 00:04:44.233 --> 00:04:48.233 but if we scroll down, 75 00:04:48.233 --> 00:04:52.233 you can already see with it set here in the, no 76 00:04:52.233 --> 00:04:56.233 Operator Panel this time, over here in the Modifier Panel there 77 00:04:56.233 --> 00:05:00.233 is a number of Subdivisions, so 0 is no Subdivisions. 78 00:05:00.233 --> 00:05:04.233 But if we Subdivide once, we get a kind of 79 00:05:04.233 --> 00:05:08.233 spherical shape. If we bring up our Icosphere, 80 00:05:08.233 --> 00:05:12.233 we can see it's still slightly bigger than what it was 81 00:05:12.233 --> 00:05:16.233 before, but however, when you Subdivide a second time, 82 00:05:16.233 --> 00:05:20.233 and we hide our Icosphere again, we can see it's gotten smaller. And 83 00:05:20.233 --> 00:05:24.233 if we subdivide again, it gets closer and closer to a 84 00:05:24.233 --> 00:05:28.233 sphere. Now, it's a little bit wonky still, but we're 85 00:05:28.233 --> 00:05:32.233 almost there! And there is an operator called to sphere, I'm not going to show 86 00:05:32.233 --> 00:05:36.233 you that, at the moment. I just want to show you that the cube can 87 00:05:36.233 --> 00:05:40.000 actually be a sphere, using the Subdivions Surface, 88 00:05:40.000 --> 00:05:44.000 and I'll just cick Apply to apply the modifier 89 00:05:44.000 --> 00:05:45.366 to our cube. 90 00:05:46.266 --> 00:05:49.500 Now, there is one thing to take into account whenever 91 00:05:49.500 --> 00:05:53.500 you subdivide an object like this, and if I hop into 92 00:05:53.500 --> 00:05:57.500 the Wireframe mode, you'll see it really clearly. So we're in Wireframe 93 00:05:57.500 --> 00:06:01.500 mode. If we enable another one of these 94 00:06:01.500 --> 00:06:05.500 objects, you can see that those two pretty much line 95 00:06:05.500 --> 00:06:09.500 up with one another, but this sphere in the middle is nowhere 96 00:06:09.500 --> 00:06:13.500 near. In fact, I think it's about 16% 97 00:06:13.500 --> 00:06:17.500 too small. So if we go into View and set it to 98 00:06:17.500 --> 00:06:21.500 Orthographic, so we can make a judgement on size a proper one, and then, just 99 00:06:21.500 --> 00:06:25.500 move around it because it's a sphere, it doesn't actually matter which way you're viewing it from. 100 00:06:25.500 --> 00:06:29.500 If we decide to scale our cube ironically, because it looks nothing 101 00:06:29.500 --> 00:06:33.500 like that, we can see down in the lower-left the Scale 102 00:06:33.500 --> 00:06:37.500 by which it needs to go up by is about 0.16 or 103 00:06:37.500 --> 00:06:41.500 0.17, in order to match the same actual size 104 00:06:41.500 --> 00:06:45.500 of the sphere we're working on. So there we go, there's three different 105 00:06:45.500 --> 00:06:49.500 types of sphere to rack your brain around! Now one final thing 106 00:06:49.500 --> 00:06:53.500 on this cube, because I've just spotted it by 107 00:06:53.500 --> 00:06:57.500 looking at this wireframe, actually. So let's hop back over into 108 00:06:57.500 --> 00:06:59.233 Solid Mode and hop into Edit. 109 00:06:59.233 --> 00:07:00.600 Now you see, 110 00:07:00.600 --> 00:07:04.600 here in particular and in four places along 111 00:07:04.600 --> 00:07:08.600 the top and bottom, are the remnants of it being a cube, so you 112 00:07:08.600 --> 00:07:12.600 can never really get away from the fact that that was a cube. You can see it 113 00:07:12.600 --> 00:07:16.600 straight away here that it in fact was a cube, because you've 114 00:07:16.600 --> 00:07:20.600 got these points joining together, but it's still spherical in shape. 115 00:07:20.600 --> 00:07:24.600 Now, the great thing about doing this is, you end up with 116 00:07:24.600 --> 00:07:28.600 a mesh topology that's all quads, rather than all 117 00:07:28.600 --> 00:07:32.600 triangles, which has its benefits later on. 118 00:07:32.600 --> 00:07:35.733 So I feel a challenge coming on! 119 00:07:35.733 --> 00:07:39.133 I would like you to choose a sphere type 120 00:07:39.133 --> 00:07:43.133 and make a ball! So choose your sphere type, 121 00:07:43.133 --> 00:07:47.133 and the way that should be guiding you is, you should be 122 00:07:47.133 --> 00:07:51.133 thinking about the placement of finger holes. Which one of those 123 00:07:51.133 --> 00:07:55.133 three, that we've just been through, will enable us to equally space 124 00:07:55.133 --> 00:07:59.133 finger holes, without causing us any problem? 125 00:07:59.133 --> 00:08:03.133 So try out all three spheres, think about equal spacing for 126 00:08:03.133 --> 00:08:04.166 our finger holes. 127 00:08:04.166 --> 00:08:07.166 Now, according to Wikipedia, a bowling ball's 128 00:08:07.166 --> 00:08:11.166 diameter is somewhere between 21.59 and 129 00:08:11.166 --> 00:08:15.166 21.83 centimeters. Wonderful! So do 130 00:08:15.166 --> 00:08:19.166 pick an appropriate scale to work in, 131 00:08:19.166 --> 00:08:23.166 as we've done before with our pin. Finally, make 132 00:08:23.166 --> 00:08:27.166 that sphere, and we'll cover the finger holes next. So don't worry about 133 00:08:27.166 --> 00:08:31.166 making those, at the moment, we'll do that in the next lecture. 134 00:08:31.166 --> 00:08:35.166 Pause the video now, and give that a go! 135 00:08:35.166 --> 00:08:39.166 OK guys, welcome back! Let's hop over into Blender! 136 00:08:40.266 --> 00:08:44.266 So let's think carefully about our 137 00:08:44.266 --> 00:08:48.266 sphere that we're working on. Well we want equal spacing. 138 00:08:48.266 --> 00:08:52.266 Now, we can see by looking at this sphere, which is made from our 139 00:08:52.266 --> 00:08:56.266 sub-divisioned cube, we can see that is not even. 140 00:08:56.266 --> 00:09:00.266 It does vary, our mesh topology varies, and it 141 00:09:00.266 --> 00:09:04.266 gets closer and closer in funny shapes. It's not all complete squares, 142 00:09:04.266 --> 00:09:08.266 as it goes around it can't possibly be that, and it ends up at funny 143 00:09:08.266 --> 00:09:12.266 points here, so that would be no good for making our pin! So 144 00:09:12.266 --> 00:09:16.266 I'm going to hide that, by clicking the eye over here. Oh, 145 00:09:16.266 --> 00:09:20.266 I can't do that, because I'm not in Object Mode. So let's get rid of that! Let's have a look 146 00:09:20.266 --> 00:09:24.266 at our UV Sphere! Now, this is great for globes 147 00:09:24.266 --> 00:09:28.266 or perhaps an eye, by the looks of things, because things meet 148 00:09:28.266 --> 00:09:32.266 at a pole at the top and bottom. However, again 149 00:09:32.266 --> 00:09:36.266 this isn't evenly spaced! If we look at 150 00:09:36.266 --> 00:09:40.266 some of the squares running around the middle they're squares, and as we come up to 151 00:09:40.266 --> 00:09:44.266 the top, they're no longer there. So that would be a real 152 00:09:44.266 --> 00:09:48.266 pain to work with, if we wanted evenly spaced stuff. So that leaves 153 00:09:48.266 --> 00:09:52.266 our final one, which is the Icosphere! And looking at this, 154 00:09:52.266 --> 00:09:56.266 anywhere we want we've got lovely segments, 155 00:09:56.266 --> 00:10:00.266 and it's even across its entire surface, so we will work with our 156 00:10:00.266 --> 00:10:04.266 Icosphere! Now, I'm going to work to 157 00:10:04.266 --> 00:10:08.266 2.6 Blender units, and that will actually align it to 158 00:10:08.266 --> 00:10:12.266 the same scale that our bowling pins are at, 159 00:10:12.266 --> 00:10:16.266 as well, so it's a 10 times scale. So let's do that now! 160 00:10:16.266 --> 00:10:20.266 So I'm going to scale it up evenly on all axes. 161 00:10:20.266 --> 00:10:24.266 Because it started at one, I can just do 162 00:10:24.266 --> 00:10:28.266 2.6. That's right! And 163 00:10:28.266 --> 00:10:32.266 there we go, we have our bowling pin at times 164 00:10:32.266 --> 00:10:36.266 10 of real size, at 2.6, so again, it fits on our plain nice 165 00:10:36.266 --> 00:10:37.333 and neatly. 166 00:10:37.333 --> 00:10:40.233 And there we go, we've created our sphere 167 00:10:40.233 --> 00:10:44.233 at an appropriate scale, ready for our finger 168 00:10:44.233 --> 00:10:47.433 holes, which we will make in the next lecture! See you soon!