1 00:00:05,940 --> 00:00:10,180 Now let's take a look at something called the cloth simulation. 2 00:00:10,380 --> 00:00:18,810 And obviously like the name implies Clotho simulation is there to simulate cloth such as if you have 3 00:00:18,810 --> 00:00:27,640 clothes on a character or it could be as simple as a blanket for a bed or a cape for one of your characters. 4 00:00:27,690 --> 00:00:30,050 Anything that you would need to simulate cloth. 5 00:00:30,090 --> 00:00:32,510 We use the cloth simulator for. 6 00:00:32,730 --> 00:00:38,520 All right let's go ahead and take a look at it and if we go over here to our properties panel we can 7 00:00:38,520 --> 00:00:42,810 see that back in the physics tab where we had the rigid body. 8 00:00:42,900 --> 00:00:45,600 We have another one called cloth. 9 00:00:45,600 --> 00:00:52,310 So to add the cloth Let's shift a and mash plane hit G and Z. 10 00:00:52,630 --> 00:00:56,870 Let's move it up above the cube and scale it up. 11 00:00:57,030 --> 00:01:02,680 Go ahead and click cloth and now hitting Alt A Let's see what happens. 12 00:01:03,590 --> 00:01:05,560 You can see that not much happens. 13 00:01:05,570 --> 00:01:10,050 And the reason being is several reasons why. 14 00:01:10,340 --> 00:01:13,090 So let's take a look at several different things. 15 00:01:13,100 --> 00:01:18,460 First of all the cloth needs something to interact with. 16 00:01:18,710 --> 00:01:23,970 So let's go ahead and grab the cube and to make it interact with the cube we're going to make the cloth 17 00:01:24,260 --> 00:01:26,140 a collision object. 18 00:01:26,270 --> 00:01:28,320 So this is another. 19 00:01:28,760 --> 00:01:35,930 Another physics tab that we're taking a look at right here which is called the collision of right now 20 00:01:35,930 --> 00:01:44,080 hitting a you can see that something happens our cloth is colliding with the cube. 21 00:01:44,250 --> 00:01:47,130 But it doesn't look like cloth at all. 22 00:01:47,130 --> 00:01:50,540 I mean I was pretty anti-climatic. 23 00:01:50,550 --> 00:01:52,230 That was kind of lame. 24 00:01:52,230 --> 00:01:55,610 So let's go ahead and see what's happening. 25 00:01:55,920 --> 00:02:02,130 Well if we select our plane and hit tab to go into edit mode you can see that we only have four vertices 26 00:02:02,130 --> 00:02:08,780 on here so there is nothing for the cloth to be actually acting like clock. 27 00:02:08,790 --> 00:02:13,530 There's nothing for it to bend because there is no additional vertices. 28 00:02:13,710 --> 00:02:18,990 So let's go ahead let's go ahead and hit w subdivide. 29 00:02:19,290 --> 00:02:31,150 Bring the number of cuts up to 10 let's scale it up a little bit more and hit w subdivide one more time. 30 00:02:31,160 --> 00:02:31,550 All right. 31 00:02:31,550 --> 00:02:37,930 Now let's all take a and you could see that the cloth wraps around the cube. 32 00:02:38,000 --> 00:02:40,110 Pretty awesome. 33 00:02:40,280 --> 00:02:43,180 But also Cliggott smooth shading on the cloth. 34 00:02:43,300 --> 00:02:50,630 And wow that's just a simple animation and just that is pretty cool because that took us a couple of 35 00:02:50,630 --> 00:02:54,700 seconds and we get a pretty nice result here. 36 00:02:54,740 --> 00:02:59,700 Let's put the end frame way down so that when it repeats it doesn't take that long. 37 00:02:59,750 --> 00:03:03,990 And let's take a look at some of the different options that we have for our cloth. 38 00:03:05,180 --> 00:03:07,670 First of all for the cloth we have different options here. 39 00:03:07,670 --> 00:03:09,570 We have the pre-sets. 40 00:03:09,830 --> 00:03:14,260 So here we can choose from cotton which it's currently out right now. 41 00:03:14,450 --> 00:03:17,990 We could choose denim. 42 00:03:18,110 --> 00:03:23,900 You can see that it will interact in a different way more like denim jeans or jeans. 43 00:03:23,900 --> 00:03:25,620 Here we have leather. 44 00:03:26,180 --> 00:03:32,330 So again this one will interact differently it's thicker You can see that it's not folding as much as 45 00:03:32,330 --> 00:03:34,090 a thicker feel to it. 46 00:03:36,100 --> 00:03:44,110 Then we have rubber which again will interact differently and not be as flowing around our object or 47 00:03:44,110 --> 00:03:48,390 be more more bouncy. 48 00:03:49,570 --> 00:03:54,260 And the last one we have is silk and this one you can see is nice. 49 00:03:54,260 --> 00:04:03,050 This could be like a table cloth or some kind of silk curtain or something like that. 50 00:04:03,440 --> 00:04:07,280 Let's put it back to cotton and you can see every time we change these. 51 00:04:07,410 --> 00:04:11,800 The presets are the settings here change as well. 52 00:04:12,870 --> 00:04:15,990 We can also change the settings by ourselves. 53 00:04:15,990 --> 00:04:22,500 So spring right here is basically the smoothness or the jiggling of the cloth. 54 00:04:22,680 --> 00:04:31,010 So if we turn this down all the way to zero you can see that there's not as much spring to the cloth 55 00:04:31,020 --> 00:04:36,900 if we turn it all the way to 50 you can see that that might be a little too much. 56 00:04:36,900 --> 00:04:43,950 Let me turn it to five and you could see that it's more balanced and has more spring to it as well here 57 00:04:44,150 --> 00:04:47,930 higher equals more smooth less jiggling. 58 00:04:47,940 --> 00:04:57,060 Now the air basically it makes it so that there is because when cloth falls the air that is falling 59 00:04:57,630 --> 00:05:01,880 that it's falling through has some thickness to it that keeps it up. 60 00:05:01,890 --> 00:05:07,080 If you've ever dropped like a napkin or some kind of cloth sometimes the air keeps it up. 61 00:05:07,080 --> 00:05:13,560 So if we put this all the way to zero you can see that there is no air. 62 00:05:13,670 --> 00:05:21,840 If we put it all the way to 10 you can see that the air is slowing it down. 63 00:05:21,840 --> 00:05:26,530 In fact it's slowing it down so much so we can't even see the queue. 64 00:05:27,150 --> 00:05:27,500 All right. 65 00:05:27,510 --> 00:05:32,670 So that is the air factor. 66 00:05:32,720 --> 00:05:40,760 Let me put that to point to one point something the velocity over here is basically how fast it goes 67 00:05:40,760 --> 00:05:42,180 and how much damping there is. 68 00:05:42,180 --> 00:05:51,890 So if I put it down to zero you can see that it's going a lot slower and it's dampening the cloth simulation 69 00:05:51,900 --> 00:05:54,690 if I put it all the way to one. 70 00:05:54,780 --> 00:05:58,920 It means there's no damping or no slowing down of the cloth. 71 00:06:00,310 --> 00:06:04,710 Now the steps is the quality of the cloth the higher the better. 72 00:06:04,720 --> 00:06:07,840 But the slower it will be because it's more quality. 73 00:06:07,840 --> 00:06:16,510 So if I put it to 30 or so you can see it looks better it's bending better it has a better flow to it. 74 00:06:16,670 --> 00:06:18,740 Although right now 75 00:06:21,910 --> 00:06:24,040 let me go back to tab tab. 76 00:06:24,220 --> 00:06:29,550 Let me subdivide this one more time and let's go with that. 77 00:06:29,820 --> 00:06:35,930 So the steps will have a better quality interaction of the cloth and it will look better. 78 00:06:35,940 --> 00:06:41,460 Steps 5 is that if I bump this up to 30 79 00:06:44,490 --> 00:06:54,540 and rewind it to the beginning you will see that's much slower but it will have a better result with 80 00:06:54,540 --> 00:07:00,350 the interaction and with the bending of the cloth that we have here. 81 00:07:01,110 --> 00:07:01,430 All right. 82 00:07:01,440 --> 00:07:09,430 Let me put that back down to 5 because it's very slow and you could see that once you run it through 83 00:07:09,430 --> 00:07:17,790 once the second time it will be a lot faster because Blendr actually it saves the. 84 00:07:17,950 --> 00:07:22,860 It calculates all your settings and you can see this blue line right here. 85 00:07:22,990 --> 00:07:28,930 As long as you don't change any of the settings right now it's calculating them and kind of inserting 86 00:07:28,930 --> 00:07:31,240 temporary keyframes in here. 87 00:07:31,240 --> 00:07:32,490 That's pretty cool. 88 00:07:32,830 --> 00:07:35,080 So you can see this blue line right here as soon as it's done. 89 00:07:35,080 --> 00:07:41,430 It will actually go much faster because it's already calculated everything that needs to calculate. 90 00:07:41,590 --> 00:07:49,360 And right here you could see that it's actually going again if we put down our end frame so that it 91 00:07:49,360 --> 00:07:58,650 finishes faster you will see that now it's going super fast because it's already calculated all these 92 00:07:58,650 --> 00:08:02,580 settings and it doesn't have to recalculate them. 93 00:08:02,620 --> 00:08:10,300 However if you make any changes such as if I change a spring just once you could see it will recalculate 94 00:08:10,300 --> 00:08:16,710 everything and have to redo it all right now let's go to the mass. 95 00:08:16,710 --> 00:08:24,820 So the mass is basically the mass of the cloth and it's how heavy or how thick the cloth will be. 96 00:08:26,420 --> 00:08:33,260 I'm actually going to go ahead and undo that subdivision because it's taking too long now I should put 97 00:08:33,260 --> 00:08:39,320 it on my graphics card and send my C-p you know if that will help but you can see the mass. 98 00:08:39,470 --> 00:08:41,030 If I put it all the way to 10 99 00:08:44,110 --> 00:08:52,580 looks like so and if I put it all the way to zero you can see that nothing happens. 100 00:08:52,620 --> 00:09:01,470 So the mass is the heaviness or the the weight of the cloth structure is basically the stiffness of 101 00:09:01,590 --> 00:09:02,500 the cloth. 102 00:09:02,700 --> 00:09:11,070 If I put it to zero you can see it has no stiffness at all and it kind of looks like some kind of droopy 103 00:09:12,000 --> 00:09:16,360 goop or saliva I guess you could use it for that. 104 00:09:16,480 --> 00:09:20,650 That's actually a pretty interesting result right there. 105 00:09:21,000 --> 00:09:23,110 I don't remember ever getting that kind of results. 106 00:09:23,160 --> 00:09:24,500 That's pretty cool. 107 00:09:24,990 --> 00:09:27,520 So that's the structure. 108 00:09:27,720 --> 00:09:35,010 If I put it all the way to what a 100 or more you can see that it has more structure and stiffness and 109 00:09:35,010 --> 00:09:42,450 it will wrap around the mesh much more and like it says it will have a structured look to it. 110 00:09:42,460 --> 00:09:49,150 Let's put that back to 15 and then bending is basically for the wrinkles of the cloth. 111 00:09:49,200 --> 00:09:54,880 If I put this to zero I can see that there's less wrinkles I put it up. 112 00:09:55,140 --> 00:10:01,530 You can see that there's going to be more wrinkles and there are going to be thicker and not as conforming 113 00:10:01,560 --> 00:10:08,890 around the mesh when you put that down to how it was in fact I'm just going to like silk and then cotton 114 00:10:09,010 --> 00:10:13,180 once again to reset all the pre-sets. 115 00:10:13,260 --> 00:10:19,140 Now over here we have the cloth cache which is basically like I said right here. 116 00:10:19,140 --> 00:10:25,660 It takes into account all your settings and once it has it runs through it very smoothly. 117 00:10:25,860 --> 00:10:35,280 But if you want to render this as kind of a key frame or render it so that it's basically an animation 118 00:10:35,310 --> 00:10:40,310 and it's in here for good you would just click and bake and it will bake. 119 00:10:40,350 --> 00:10:47,790 The key frames or the simulation of this into keyframes so that you have it here and you could scroll 120 00:10:47,790 --> 00:10:48,780 through. 121 00:10:48,810 --> 00:10:51,320 You could scroll through it and it's there for good. 122 00:10:51,450 --> 00:10:56,910 Even if you change one of the settings it will it will basically it will break the settings. 123 00:10:56,910 --> 00:11:02,880 How they are right now and then if you change them it won't actually change your simulation because 124 00:11:02,880 --> 00:11:06,250 then it will be baked into keyframes. 125 00:11:06,360 --> 00:11:07,410 But that's really good. 126 00:11:07,410 --> 00:11:13,080 Once you know exactly how you want your simulation to be you can bake it and it will save a lot of time 127 00:11:13,770 --> 00:11:15,320 and effort. 128 00:11:15,330 --> 00:11:17,570 Here we have cloth collision. 129 00:11:17,760 --> 00:11:22,080 This right here is the quality of the cloth and the collision. 130 00:11:22,080 --> 00:11:32,380 So if I change this to 6 you will see that it's much much slower but it has much better results with 131 00:11:32,380 --> 00:11:32,860 it. 132 00:11:32,860 --> 00:11:40,310 Again keep in mind that our plane is only subdivided so much so it still looks kind of blocky. 133 00:11:40,460 --> 00:11:47,360 Of course you could even go to the modifiers tab and add a subdivision surface modifier to your cloth 134 00:11:47,420 --> 00:11:49,430 which will smooth it out as well. 135 00:11:49,430 --> 00:11:50,910 So let's go ahead and do that. 136 00:11:52,270 --> 00:11:58,150 Now the distance right here is basically as it says the minimum distance between collision objects before 137 00:11:58,150 --> 00:12:00,300 collision response takes in. 138 00:12:00,430 --> 00:12:06,820 So if I change this all the way up you will see that it starts to interact with our cube before it even 139 00:12:06,820 --> 00:12:10,770 hits it which gives it a kind of interesting result. 140 00:12:11,830 --> 00:12:13,060 To say the least. 141 00:12:13,420 --> 00:12:16,380 Let's send it back to point 0 1 5. 142 00:12:16,390 --> 00:12:21,130 And if we take it to 0 1 it's going to go through the cube so you don't want to have too low number 143 00:12:21,190 --> 00:12:27,420 either right here repel will repulse will repel the fort. 144 00:12:27,620 --> 00:12:33,990 I'm trying to read and and try to give my own take on it as well. 145 00:12:34,060 --> 00:12:38,900 It says repulsion force apply on cloth when it close to colliding. 146 00:12:38,900 --> 00:12:42,310 So basically repel the cloth away a little bit. 147 00:12:42,320 --> 00:12:43,730 If I change this to 20 148 00:12:48,200 --> 00:12:50,540 I actually do not see what that does. 149 00:12:50,540 --> 00:12:51,260 Honestly 150 00:12:55,410 --> 00:13:02,460 yeah I'm not too sure I'm not gonna lie and try to think like to act like I know what the ripple is 151 00:13:02,460 --> 00:13:04,940 doing because I am not too sure. 152 00:13:04,980 --> 00:13:07,350 I do know about the quality and the distance to repel. 153 00:13:07,350 --> 00:13:10,800 I'm not too sure this one not sure. 154 00:13:10,800 --> 00:13:18,450 And then the friction basically acts with the friction on the cube. 155 00:13:21,270 --> 00:13:22,710 Right here we have self collision. 156 00:13:22,710 --> 00:13:23,640 This is pretty cool. 157 00:13:23,640 --> 00:13:26,940 It means that the cloth collides with in itself. 158 00:13:26,940 --> 00:13:32,910 So for example if you have clothing or if the cloth is going to be hitting itself such as right here 159 00:13:33,450 --> 00:13:37,650 you could right here you could see that it actually is colliding with in itself. 160 00:13:37,920 --> 00:13:45,140 So if you had self collision you could then increase the quality of this so that when it falls it won't 161 00:13:45,140 --> 00:13:47,150 necessarily go into itself. 162 00:13:47,150 --> 00:13:55,700 You could see that now has a much nicer collision and the mesh is intersecting into itself whereas if 163 00:13:55,700 --> 00:13:59,290 I have that one you can see that. 164 00:13:59,680 --> 00:14:01,360 And if I take self collision off 165 00:14:04,560 --> 00:14:08,810 you can see that right here it's kind of going into its own mesh. 166 00:14:08,970 --> 00:14:10,350 So that is self collision. 167 00:14:10,350 --> 00:14:18,910 You could also increase the distance so that it doesn't come as close to itself as it does when this 168 00:14:18,910 --> 00:14:19,700 is off. 169 00:14:19,720 --> 00:14:27,570 If I take this all the way down you will see that the mesh comes closer to itself and to colliding with 170 00:14:27,590 --> 00:14:28,350 in itself. 171 00:14:28,380 --> 00:14:30,010 As you can see right there. 172 00:14:30,150 --> 00:14:37,540 So that self collision and then down here we have this option which we're not going to get into this 173 00:14:37,540 --> 00:14:43,030 goes into even more detail with Virtex groups which we'll take a look at very soon. 174 00:14:43,030 --> 00:14:48,310 I think we already took a look at some Virtex growth groups and then here we have another one which 175 00:14:48,310 --> 00:14:54,260 we want take a look at with vertex groups and then the last one we want to see is cloth field weights. 176 00:14:54,340 --> 00:15:00,130 And here you could actually change some different settings on your cloth. 177 00:15:00,160 --> 00:15:03,980 Now for example right now I believe it's using gravity. 178 00:15:04,210 --> 00:15:11,620 So the thing is if we turn the gravity down it will actually affect the gravity on our cloth and we 179 00:15:11,620 --> 00:15:16,160 could turn it up so that we can have more or less gravity. 180 00:15:16,180 --> 00:15:21,970 Now these other features are used for different things we'll be taking a look at the window one very 181 00:15:21,970 --> 00:15:22,870 shortly. 182 00:15:23,050 --> 00:15:27,640 But those are the options for the cloth simulator. 183 00:15:27,640 --> 00:15:33,100 And again keep in mind also that these are the settings on the cloth. 184 00:15:33,100 --> 00:15:39,350 We also have the settings on our collision that are on our collision object. 185 00:15:39,370 --> 00:15:44,320 So right here we have some options that can help us to get better results. 186 00:15:44,320 --> 00:15:48,910 For example right now we could see the cube is poking out of the cloth a little bit. 187 00:15:49,090 --> 00:15:56,980 If we increase the outer which basically increases the outer thickness of our cube you can see that 188 00:15:56,980 --> 00:16:02,730 now it's not going inside or the cloth is not sticking through our cloth any longer. 189 00:16:03,100 --> 00:16:07,690 If we turn it to 1 or 0 obviously it's as like that. 190 00:16:07,690 --> 00:16:09,530 So we can increase the amount. 191 00:16:09,700 --> 00:16:15,850 Also this is the inner face thickness which Ray here I don't believe it will actually affect anything 192 00:16:15,910 --> 00:16:20,980 because this would be the inside face of our cube right here. 193 00:16:20,980 --> 00:16:22,360 This is for particles. 194 00:16:22,400 --> 00:16:26,110 So this does not apply to the cloth. 195 00:16:26,110 --> 00:16:30,370 This would be for particle system soft dampening. 196 00:16:30,370 --> 00:16:33,350 This will increase the damp amount of the cloth. 197 00:16:38,190 --> 00:16:40,780 So it dampens more around our cube. 198 00:16:41,130 --> 00:16:44,280 And then here is force fields which is not. 199 00:16:44,400 --> 00:16:50,640 Again the clock we have particle damping and particle friction which would be used with the particle 200 00:16:50,640 --> 00:16:57,360 simulator which we will take a look at in another tutorial but as it says here these are soft body and 201 00:16:57,360 --> 00:16:59,750 cloth options right here. 202 00:17:00,970 --> 00:17:02,640 And this one is for forcefield. 203 00:17:02,650 --> 00:17:09,500 I don't believe this one affects the soft body it doesn't look like it does so again soft body options 204 00:17:09,500 --> 00:17:13,650 are or this one this one and this one right here. 205 00:17:13,670 --> 00:17:20,060 So that is the cloth simulator and the soft body. 206 00:17:20,060 --> 00:17:22,200 And it's really really cool. 207 00:17:22,220 --> 00:17:27,580 And we took a look at pretty much all the options that you would need in order to play around with this. 208 00:17:27,590 --> 00:17:30,820 Now let's take a look in our next tutorial at. 209 00:17:30,860 --> 00:17:37,100 Another way that we could use cloth's So in this one the way that we use this this could be use for 210 00:17:37,100 --> 00:17:45,660 example a table cloth a bedspread a napkin falling any kind of thing like that that you could imagine. 211 00:17:45,740 --> 00:17:50,260 Just get imaginative use your imagination and you'll know what to do with it. 212 00:17:50,510 --> 00:17:56,480 All right so now let's take a look at how we can use the cloth simulation in another way. 213 00:17:56,480 --> 00:17:58,980 And let's also take a look at force fields. 214 00:17:59,000 --> 00:18:01,570 All right I'll see on the next video. 215 00:18:01,670 --> 00:18:06,350 I know I know I use the same image as a previous tutorial. 216 00:18:06,350 --> 00:18:07,300 Shame on me. 217 00:18:07,550 --> 00:18:08,680 But it's a different quote. 218 00:18:08,690 --> 00:18:11,560 So don't worry about it. 219 00:18:11,720 --> 00:18:18,620 The world of 3D art is a beautiful place to start because here you will find that you can create a reality 220 00:18:18,620 --> 00:18:20,440 from your mind. 221 00:18:20,450 --> 00:18:23,990 All right you guys create your own reality within blender. 222 00:18:23,990 --> 00:18:25,050 Ciao for now. 223 00:18:25,130 --> 00:18:25,780 Oh vois.