WEBVTT 00:00.780 --> 00:04.780 Welcome to layering particle systems in blender. 00:04.890 --> 00:10.340 In this video you will see the solution or at least my solution to the last lecture. 00:10.740 --> 00:19.170 Use a series of particle systems to plant our various grass types and make sure we use low values during 00:19.170 --> 00:23.610 prototyping to get a feel of how the grass will look. 00:23.610 --> 00:26.660 So let's hop straight on over in a blender. 00:27.560 --> 00:28.850 So I left you guys. 00:28.880 --> 00:32.320 Here is some cones on a hill that's not quite grass. 00:32.330 --> 00:41.820 So let's go over in to our fluffy bunny file and we had this one played the grass is grass plants plant. 00:41.870 --> 00:47.790 So the first thing to do is on a nest it's under the ground plane itself. 00:47.900 --> 00:53.820 So let's go to the ground plane would come and turn it on air we get. 00:54.950 --> 00:58.720 And let's go ahead and add a particle system. 00:58.730 --> 01:04.200 Now I'm going to start with probably the most common one which will be the grass short. 01:04.520 --> 01:11.420 And I'm going to add a new particle system one and call it grass short. 01:11.750 --> 01:17.270 And then once we've done that I'm also going to name it grass short here and this is going to be the 01:17.270 --> 01:22.040 one that's going to cover all lots of the ground not absolutely everything if the grass ends up too 01:22.040 --> 01:28.140 thick it doesn't look natural grass doesn't grow and suffocate itself. 01:28.250 --> 01:30.650 So that's set up there. 01:30.650 --> 01:34.850 I don't see any hairs as switch on smooth shading. 01:35.700 --> 01:38.720 I make sure I am on the ground plane. 01:39.960 --> 01:47.430 No I wasn't so aware of my on our applied grass short never mind will remove from there go to the ground 01:47.430 --> 01:48.210 plain. 01:48.420 --> 01:54.980 Add it in and select grass short it's got zero next to it of course because we've just removed. 01:55.020 --> 01:56.540 It's only use a salad. 01:56.560 --> 01:57.940 It's got no use for us. 01:58.050 --> 01:59.510 So there's our grass short. 01:59.510 --> 02:03.150 It's a hair and it's now going to be an object. 02:03.180 --> 02:06.680 And at grass short excellence. 02:06.700 --> 02:13.210 Now we've got that set up there as goes at the hair length to one and the size to one. 02:13.560 --> 02:17.270 And it's starting to fill up our mesh. 02:17.370 --> 02:19.500 But of course we don't want to leave it there. 02:19.500 --> 02:24.840 What we'll want to do is have some children now set to the display of 10. 02:24.840 --> 02:29.690 I'm going to leave it at a render of 10 as well that's probably going to be enough. 02:29.700 --> 02:31.350 And I'm going to add some. 02:32.310 --> 02:39.750 Randomness to it's changed asylum even going to up for random size can I make sure there's lots of fats 02:40.110 --> 02:41.170 and random here. 02:41.190 --> 02:48.450 Well I'm going to increase that significantly and I'm going to just change the threshold so he gets 02:48.450 --> 02:50.980 some bits sticking out more than others. 02:51.330 --> 02:53.670 About thirty three or thirty three. 02:53.670 --> 03:00.620 Thirty five percent of the grass blades are now completely random or not random. 03:02.870 --> 03:05.490 Are not random though we get the right way around. 03:05.740 --> 03:05.950 OK. 03:05.980 --> 03:10.690 So I'm going to leave it like that for the moment and start adding a nother. 03:15.060 --> 03:16.440 Particle system. 03:16.440 --> 03:24.920 So let's now go in and add another particle system I call that short grass I wasn't going to forget. 03:26.430 --> 03:28.590 Rather short short grass okay. 03:28.620 --> 03:29.730 Particle system too. 03:29.730 --> 03:30.750 What shall we do next. 03:30.770 --> 03:35.980 Do the medium m e d r u m medium grass. 03:37.460 --> 03:43.820 Now of course here I'm going to borrow my short grass that we've already done all grass short can make 03:43.850 --> 03:48.740 a unique user and immediately called it medium grass. 03:48.740 --> 03:51.930 In fact under to rename the other one. 03:53.030 --> 03:57.880 Just me being an analytical about it's all a shot. 03:58.070 --> 03:58.520 S h. 03:58.530 --> 04:00.840 Who are to grasp just what the other one is shortz. 04:00.860 --> 04:02.400 No that's fine. 04:02.570 --> 04:08.870 Okay so medium grass Let's go in and select here. 04:08.890 --> 04:10.940 One of the medium grasses. 04:11.280 --> 04:14.320 Excellent and we can see there's probably too many of those. 04:14.330 --> 04:19.410 So I'm going to knock down the number here to maybe 200. 04:21.040 --> 04:23.410 Starting to look quite nice. 04:23.410 --> 04:29.580 Now I'm going to just go in straight away and add ourselves a virtex group. 04:29.770 --> 04:35.460 I'm going to call it medium grass one. 04:36.980 --> 04:41.980 Unhappy with the the base grass the short grass covering absolutely everything. 04:41.980 --> 04:46.190 And I have medium grass to watch he wants to set these up. 04:46.340 --> 04:49.390 I'm going to have the. 04:50.120 --> 04:52.820 Grass short plants. 04:53.450 --> 04:55.290 Grass shorts. 04:57.060 --> 04:58.260 Plants. 05:00.980 --> 05:03.110 Then there will be grass seed. 05:05.690 --> 05:07.680 And there will also be grass. 05:07.700 --> 05:08.430 See. 05:08.480 --> 05:09.700 The plant itself. 05:09.710 --> 05:11.950 So grass. 05:12.870 --> 05:14.050 Plants. 05:15.310 --> 05:20.140 Oh grass seed plants I know which one it is naming is very important. 05:20.140 --> 05:25.040 I've got to remember if I come back to this in a few years time what I know what it means. 05:25.060 --> 05:28.930 So let's go in and go to the medium grass which you're on at the moment. 05:28.930 --> 05:36.620 Let's go to the particle system with the medium grass and turn on the density and select. 05:37.350 --> 05:39.120 Medium grass one. 05:40.200 --> 05:44.640 So that would just need to change once we've got this right we can just change a couple of values. 05:44.660 --> 05:47.790 Now make sure we've got the right one selected. 05:47.870 --> 05:52.290 So I have a habit of not checking before I plough forward switch ensue. 05:53.260 --> 05:56.750 White paint and let's. 05:56.790 --> 06:03.260 Are much better now you see here the number of cause of only highlighted a very small area. 06:03.330 --> 06:06.130 But I'm going to turn off those. 06:06.130 --> 06:08.750 There are only highlights of that small area there. 06:08.790 --> 06:10.920 It's causing all of my grass. 06:10.920 --> 06:17.630 The two hundred plus each one's got tense of the two thousand blades of grass are in that area there. 06:17.830 --> 06:28.530 Now I'm going to put this type of short grass very sporadically over our ground there and dents are 06:28.540 --> 06:30.250 over there now. 06:30.490 --> 06:37.240 What we could do is arrange it where the camera is Bud Light to counter put it in up our entire scene 06:37.240 --> 06:41.560 for the moment so I can move the camera around and find a good angle later on. 06:41.560 --> 06:42.900 So I'm happy with that. 06:42.910 --> 06:46.120 I'm going to go and add a new particle system. 06:46.120 --> 06:50.650 I'm going to call this one medium grass too. 06:51.610 --> 06:54.540 I'm going to borrow medium grass. 06:54.560 --> 06:56.270 Make it his own. 06:57.100 --> 06:58.510 Unique user. 06:58.750 --> 07:01.020 And we've got a couple of things to change. 07:01.030 --> 07:08.650 I'm going to change the virtex groups down to medium grass so I'm then going you know. 07:10.750 --> 07:15.660 I am thing going to change the grass medium to grass medium too. 07:16.000 --> 07:17.740 So that's those things changed. 07:17.860 --> 07:23.620 And the virtex group we're going to go on to medium grass and I'm just going to do something ever so 07:23.620 --> 07:26.550 slightly different as you can see the grass is coming in. 07:26.710 --> 07:30.220 And as I paint more and more it will start to thin out. 07:30.250 --> 07:33.010 So that's those ones done as well. 07:33.010 --> 07:34.620 I'm quite happy with that. 07:34.760 --> 07:40.820 I'm going to lower the number as well what we don't want is it to be too dense at this point in time. 07:40.960 --> 07:48.640 Something lower that down to 5 I probably do the same with the other medium grass. 07:48.640 --> 07:55.330 Now this obviously you can tinker with to your heart's desire I'm going to go for eight here of course 07:55.330 --> 07:57.250 a lot of these have the same seed. 07:57.310 --> 08:02.410 So I'm just going to even though they're not the same distribution I'm just going to change the seed 08:02.440 --> 08:04.250 type on here. 08:04.270 --> 08:06.920 There we go that shows you what's going on there. 08:06.940 --> 08:09.130 And I think see the zero for that. 08:09.130 --> 08:10.960 That one's absolutely fine. 08:12.800 --> 08:19.040 Soon find out when it comes to rendering so we've got a couple more particle systems to make. 08:19.040 --> 08:20.630 So let's add in. 08:22.530 --> 08:23.410 Another one. 08:23.430 --> 08:26.830 Let's do the grass seed one. 08:30.910 --> 08:32.650 Gas seed grass seed. 08:32.650 --> 08:33.390 There we go. 08:33.580 --> 08:36.340 And again I'm going to borrow. 08:36.370 --> 08:39.030 I'm going to borrow the hammer. 08:39.060 --> 08:40.180 Where is it short. 08:40.180 --> 08:42.870 One short grass down there. 08:43.500 --> 08:46.450 And I'm going to reduce the number all the way down. 08:46.450 --> 08:53.280 I'm literally going to go down to 200 or something along those lines maybe even less one hundred. 08:53.280 --> 08:57.850 It's over the entire area which is fine children. 08:57.850 --> 09:01.190 I'm going to go down to five children. 09:01.210 --> 09:03.410 So there's not very many of these. 09:03.580 --> 09:11.850 And we'll start to see them in a moment when I put on the grass seed not the plants but just the spots 09:11.880 --> 09:13.090 the grass seed. 09:13.090 --> 09:13.940 There we go. 09:16.690 --> 09:21.440 And yet that all looks fine and it's all across the entire scene. 09:21.440 --> 09:26.870 Now I'm going to see how this is starting to look a look through the camera to see what type of view 09:26.870 --> 09:27.430 we've got. 09:27.560 --> 09:31.160 Well the render would look absolutely hideous with that camera selected. 09:31.310 --> 09:35.280 So let's go ahead and go up here. 09:35.390 --> 09:39.010 Lock for camera to view that sumate spin round. 09:39.080 --> 09:43.180 It's probably going to be a view something like that. 09:43.280 --> 09:46.090 Let's change the before we go ahead and render. 09:46.090 --> 09:51.190 Let's change the samples render samples currently at 100 I'm to lower it down to five. 09:51.230 --> 09:55.950 So it's relatively quick it's going to take a while to compute some of those objects. 09:55.950 --> 10:01.820 Then now we can start to see here that's the Hill ish you can see the hill. 10:01.950 --> 10:03.750 That's not a big deal. 10:03.790 --> 10:09.380 We probably need to increase the density of the base graphs because there's not enough of it but that's 10:09.380 --> 10:12.500 why we render so we can go back in straightaway. 10:12.860 --> 10:20.540 I think there's enough Tallgrass there so let's go and grab our short grass particle system and turn 10:20.540 --> 10:25.670 that up to a thousand and see how that renders out. 10:25.670 --> 10:29.890 That's taking a little longer and looks like it's going to be a little more dense. 10:29.960 --> 10:37.070 Of course the lower samples it does mean that you are possible that you're going to get some black colourations 10:37.070 --> 10:42.920 because obviously there's not enough samples to go through the object with light as you can see it's 10:42.920 --> 10:44.670 taking a lot longer as well. 10:44.720 --> 10:47.470 We'll end up with these dark patches right. 10:47.480 --> 10:51.850 That's looking like we've got a decent amount of cover there I'm just going to stop the render. 10:52.030 --> 10:56.960 I'm going to lower that down to 600 for the time being and we can play with these. 10:56.960 --> 10:57.980 That's the great thing. 10:57.980 --> 11:00.480 We can go backwards and forwards all day long. 11:00.510 --> 11:04.860 Now can I add in a couple of our plants themselves. 11:04.940 --> 11:07.780 But I'm going to put them in very specific locations. 11:07.940 --> 11:12.020 So let's go ahead and hop into 3D view. 11:12.020 --> 11:15.420 I'm going to hide the other particle systems first. 11:16.910 --> 11:21.260 And I'm going to go over here and do both of these at the same time. 11:21.350 --> 11:30.800 So the grass short plants only once that's around that area there that Sony put it on hills why not. 11:30.920 --> 11:38.420 And the grass seed plants I'm going to make this brush a little smaller and pop some. 11:38.420 --> 11:44.420 There some here some there one or two up on the top of the hill. 11:44.750 --> 11:45.530 Perfect. 11:45.530 --> 11:47.800 Now there are only going to be a few of those. 11:47.800 --> 11:58.510 So with the particle system I'm going to create a new one and call it grass it's plants. 11:58.610 --> 12:04.510 I'm going to set this one up manually rather than borrowing settings of any of the other ones. 12:04.550 --> 12:13.790 So I wanted to off type hair now and change it straight away for the density here so be it. 12:13.820 --> 12:15.290 Grass short plants. 12:15.290 --> 12:16.860 That's the one we're working on too. 12:16.880 --> 12:19.710 We can see the areas it's going to be in. 12:19.940 --> 12:21.590 I'm going to turn off children. 12:21.770 --> 12:25.630 I don't want any children on this so it is off by default. 12:25.820 --> 12:27.300 Don't need a thousand of them. 12:27.410 --> 12:32.330 Probably 50 maybe a little more than 50 to 200 in total. 12:32.420 --> 12:34.340 And the hair length of one. 12:35.390 --> 12:37.640 The objets is what we're going to use. 12:37.640 --> 12:40.710 We're going to use grass short plant. 12:40.760 --> 12:41.460 There we go. 12:41.630 --> 12:44.250 And set the size to one here as well. 12:44.330 --> 12:45.890 That looks good. 12:45.890 --> 12:48.670 Apart from doesn't seem to be adhering much. 12:48.830 --> 12:50.380 I think that's just. 12:50.470 --> 12:52.820 And no it's not grass short. 12:52.820 --> 12:53.980 Plants. 12:55.320 --> 13:01.060 My painting the right one grass seed plant grass are just a naming. 13:01.960 --> 13:05.300 In their grass short plants. 13:05.320 --> 13:06.780 Excellent. 13:06.790 --> 13:08.380 Is there another one down here. 13:08.490 --> 13:12.220 We need grass up grass short plant grass seed plant. 13:15.150 --> 13:16.420 That's why. 13:17.980 --> 13:22.420 I've signed it to the wrong one or I've just misnamed things and not noticed. 13:22.420 --> 13:25.620 Very easy to do with lots of things on Answer grass short plant. 13:25.720 --> 13:28.340 That's the layout I want. 13:28.450 --> 13:31.180 Now going to copy that into the next one. 13:31.180 --> 13:32.730 So did I name it. 13:32.740 --> 13:33.130 No. 13:33.130 --> 13:34.400 So brass. 13:35.150 --> 13:35.670 Go in here. 13:35.670 --> 13:39.270 Grass short plants. 13:40.340 --> 13:48.310 And then I'm going to borrow it in the particle system six grass short plants grass short plant. 13:48.320 --> 13:49.520 Why can't I see it. 13:49.520 --> 13:50.740 Is it further up. 13:50.870 --> 13:52.570 Yes it is grass short plants. 13:54.020 --> 14:02.210 And I'm going to call this grass seed plants and just scroll down probably even less. 14:02.210 --> 14:06.230 This time some may be a hundred of them in total on the scene. 14:06.260 --> 14:12.740 And I'm going to select the grass seed plant distribution. 14:12.750 --> 14:13.870 Perfect. 14:13.880 --> 14:16.920 So let's oh I haven't changed the object but the looks things. 14:16.940 --> 14:19.770 Grass seed plants. 14:19.970 --> 14:21.650 Okay that's probably too many. 14:21.650 --> 14:25.390 Looks more like a field of corn rather than anything else. 14:25.400 --> 14:27.380 So let's turn it down to 50. 14:28.270 --> 14:31.080 And I want to bits more randomness in here. 14:31.080 --> 14:36.770 So let's see if we can get anywhere with the random size. 14:36.790 --> 14:38.350 That's a bit better. 14:39.860 --> 14:45.200 We make it a bit smaller and of size only seems to make it smaller than what it was before. 14:45.200 --> 14:47.460 So have I increased the size ever so slightly. 14:47.510 --> 14:48.770 It will be larger. 14:48.950 --> 14:52.920 Okay so let's spin back around to around here. 14:52.940 --> 14:59.440 Let's turn on all the other layers themselves starting get a bit dense. 14:59.450 --> 15:04.340 I don't know how long this is going to take to render has our world got an environment texture on it 15:04.340 --> 15:07.530 has excellent can to be well lit. 15:07.550 --> 15:10.050 Let's see how this turns out. 15:10.070 --> 15:15.620 Of course what we should do at some point is also put the bunny back in the scene and let's line up 15:15.620 --> 15:16.940 the camera with the bunny. 15:18.780 --> 15:23.180 It's going to look something like that and render it out. 15:23.260 --> 15:25.180 Let's see what it comes out like. 15:30.100 --> 15:30.420 Okay. 15:30.430 --> 15:32.800 Brilliant that has turned out rather well. 15:32.800 --> 15:35.920 I'm liking how that is looking. 15:35.920 --> 15:38.860 We've got a few tweaks that I can see straightaway to do. 15:38.860 --> 15:44.350 Of course we're only at a very low sample rate at the moment and notice that took a minute and 45. 15:44.350 --> 15:51.770 My laptop is no slouch but it's also not a complete power house so that's rendered out rather nicely. 15:51.790 --> 15:54.410 I like the way it's turned out. 15:54.610 --> 15:56.650 The grass looks quite natural. 15:56.710 --> 16:00.560 Lying about here is a bit too much to grass. 16:00.700 --> 16:05.320 Not sure if that's a good thing or a bad thing and where the tree is going to be which I think is going 16:05.320 --> 16:11.230 to be somewhere around here probably wants to remove some of the grass from there. 16:11.230 --> 16:13.960 She looks quite dense up there right. 16:14.080 --> 16:18.160 So I'd love to see how your guys Meadow's are coming on. 16:18.160 --> 16:23.170 Please show me how you're getting on in the discussions I'd love to see what sort of grass you've come 16:23.170 --> 16:24.280 up with as well. 16:24.280 --> 16:28.260 So I always run a bit short of time in these videos. 16:28.270 --> 16:34.390 I'm just going to run through how I got to this stage a few extra bits that I've done obviously I've 16:34.390 --> 16:40.690 covered in the dirt the ground with a diffuse colour and to do that I have gone to the ground plane 16:40.690 --> 16:47.490 itself gone to the materials propertys and literally created a material I haven't named yet. 16:47.760 --> 16:50.710 Called its soil for the moment. 16:50.710 --> 16:53.820 So it's my soil material and I set it as a lighter colour. 16:53.830 --> 17:01.360 Brown not too dark because the shadowing that's caused by the grass on top of it will usually be enough 17:01.360 --> 17:04.870 to give us some darker soil as well. 17:05.410 --> 17:12.430 Now you'll notice that between the last image you saw and this one here I've added a few extra details 17:12.460 --> 17:13.780 and let's break them down. 17:13.780 --> 17:18.950 Now I'm going to hop into the data properties here and you'll see I've added nothing with the ground. 17:19.020 --> 17:19.390 Yeah. 17:19.410 --> 17:26.080 Virtex group here that I've painted in I've added some extra grass around the rabbit itself to make 17:26.080 --> 17:29.100 sure that it is covered up properly. 17:29.530 --> 17:33.280 Perhaps a little bit taller grass there we could go for lots of different things. 17:33.370 --> 17:41.220 Particle systems I've added that grass around the rabbit base as well and I used my short grass view. 17:41.230 --> 17:45.220 So if we just go into the 3D view I can show you that. 17:45.250 --> 17:47.620 So let's turn off everything. 17:47.620 --> 17:50.990 Here are the bits we need. 17:52.370 --> 17:58.600 Okay so I used our short grass across the entire scene. 17:58.610 --> 18:01.790 I used the medium grass base over there. 18:01.790 --> 18:09.320 This one over there the grass seed itself the long see that I spread it out very thinly across the entire 18:09.320 --> 18:10.470 scene. 18:10.820 --> 18:14.120 The grass short plant scattered all over the place. 18:14.240 --> 18:20.810 But I also made it a tiny bit larger and put it around the rabbit base is welchs to make sure it was 18:21.170 --> 18:23.310 fully covered up around there. 18:23.360 --> 18:28.250 I could have probably painted that in a bit smooth but I did literally just dumped all the grass there 18:28.550 --> 18:30.630 to make sure that the base was covered up. 18:30.680 --> 18:34.780 And finally the grass seed plant will have scattered that about as well. 18:34.880 --> 18:42.440 A few critiques of my final render or this isn't the final render but it was the render before the final 18:42.440 --> 18:43.060 render. 18:43.190 --> 18:48.830 And I've got the grass you can see through here I don't know whether that's a big problem or not but 18:48.830 --> 18:54.490 it does highlight that the ground is super smooth and ground generally isn't super smooth like that. 18:54.590 --> 18:59.090 So there's a couple of things we could make it undulate a bit more but I'm not too bothered at this 18:59.090 --> 19:02.640 stage about that there's something we can always sort out later. 19:02.900 --> 19:04.730 So how did you guys get on. 19:04.730 --> 19:10.850 I'd love to see your field your meadows or your grass land that you've created. 19:10.850 --> 19:15.340 Please share that in the discussions and I will see you guys in the next lecture. 19:15.470 --> 19:16.330 Take care.