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These are the user uploaded subtitles that are being translated: 1 00:00:00.05 --> 00:00:01.04 - [Instructor] Let's start 2 00:00:01.04 --> 00:00:03.05 the typical generative design workflow 3 00:00:03.05 --> 00:00:05.00 with the input section. 4 00:00:05.00 --> 00:00:08.01 This is where we collect all of the inputs from the user 5 00:00:08.01 --> 00:00:10.02 and data from Revit, which is required 6 00:00:10.02 --> 00:00:11.08 to execute the graph. 7 00:00:11.08 --> 00:00:13.08 The inputs are also variables 8 00:00:13.08 --> 00:00:16.00 that allow the generative design algorithm 9 00:00:16.00 --> 00:00:17.04 to generate new results 10 00:00:17.04 --> 00:00:19.08 by adjusting the input sliders. 11 00:00:19.08 --> 00:00:22.09 I currently have the Revit and Dynamo exercise files open 12 00:00:22.09 --> 00:00:23.08 for this lesson. 13 00:00:23.08 --> 00:00:26.06 In the Revit file, I've created two walls. 14 00:00:26.06 --> 00:00:30.00 One wall with windows and one without. 15 00:00:30.00 --> 00:00:31.05 We'll use the blank wall 16 00:00:31.05 --> 00:00:34.01 to optimize the placement of windows 17 00:00:34.01 --> 00:00:37.00 and we'll use these windows placed in the other wall 18 00:00:37.00 --> 00:00:40.02 as the selection windows that can be placed. 19 00:00:40.02 --> 00:00:42.00 So they're currently placed here in the view 20 00:00:42.00 --> 00:00:44.09 so that we can easily collect them in Dynamo. 21 00:00:44.09 --> 00:00:47.04 Each window has several types. 22 00:00:47.04 --> 00:00:50.02 So while we're only using three different window types, 23 00:00:50.02 --> 00:00:53.00 each one has several widths that can be placed, 24 00:00:53.00 --> 00:00:54.08 which means there'll be many options 25 00:00:54.08 --> 00:00:56.08 for the generative design algorithm 26 00:00:56.08 --> 00:00:58.00 to select from. 27 00:00:58.00 --> 00:01:00.03 So we'll use Dynamo to select the wall we want 28 00:01:00.03 --> 00:01:03.02 to use and also collect these windows. 29 00:01:03.02 --> 00:01:04.05 In the Dynamo exercise file, 30 00:01:04.05 --> 00:01:09.02 we'll start with the input section over here to the left, 31 00:01:09.02 --> 00:01:12.08 which is indicated with this input title. 32 00:01:12.08 --> 00:01:14.09 Currently, I've already collected the windows 33 00:01:14.09 --> 00:01:16.04 in the project. 34 00:01:16.04 --> 00:01:17.07 I've done this by retrieving all 35 00:01:17.07 --> 00:01:20.05 of the family types in the window category 36 00:01:20.05 --> 00:01:22.09 and if we run the script, 37 00:01:22.09 --> 00:01:26.02 we can see in this List.Flatten node 38 00:01:26.02 --> 00:01:28.05 that there're actually 17 different types 39 00:01:28.05 --> 00:01:30.06 of windows we can select from. 40 00:01:30.06 --> 00:01:32.01 From each of these types, 41 00:01:32.01 --> 00:01:34.05 I've then retrieved the width parameter 42 00:01:34.05 --> 00:01:36.02 and the height parameter, 43 00:01:36.02 --> 00:01:41.02 which we can see in this Parameter.Value node. 44 00:01:41.02 --> 00:01:43.06 So let's start by remembering this data, 45 00:01:43.06 --> 00:01:46.01 using the Data.Remember node. 46 00:01:46.01 --> 00:01:47.04 As we learnt previously, 47 00:01:47.04 --> 00:01:49.08 we can use this node to optimize the graph 48 00:01:49.08 --> 00:01:52.00 so that it does not need to retrieve 49 00:01:52.00 --> 00:01:54.09 this window-type parameter information each time 50 00:01:54.09 --> 00:01:56.02 that it runs. 51 00:01:56.02 --> 00:01:57.06 Let's add two of these nodes, 52 00:01:57.06 --> 00:01:59.08 which are found in the GenerativeDesign section 53 00:01:59.08 --> 00:02:04.01 of the node library and then Data and Remember. 54 00:02:04.01 --> 00:02:05.02 Once we've placed these, 55 00:02:05.02 --> 00:02:09.02 let's plug those parameter values into each one. 56 00:02:09.02 --> 00:02:11.06 And then run the graph again. 57 00:02:11.06 --> 00:02:16.06 Perfect, so we now have that data stored in these nodes. 58 00:02:16.06 --> 00:02:19.06 Next, let's retrieve the wall data. 59 00:02:19.06 --> 00:02:22.04 To do that, we can use the selection nodes found 60 00:02:22.04 --> 00:02:24.01 in the generative design section 61 00:02:24.01 --> 00:02:27.00 of the node library. 62 00:02:27.00 --> 00:02:28.09 These nodes allow us to prompt the user 63 00:02:28.09 --> 00:02:30.09 to select elements in the model. 64 00:02:30.09 --> 00:02:36.08 So let's use the Select Wall Element node. 65 00:02:36.08 --> 00:02:40.00 And to make that an input that will show up on our dialog, 66 00:02:40.00 --> 00:02:44.04 we need to right click it and select Is Input. 67 00:02:44.04 --> 00:02:46.00 Great, so now that we have the wall, 68 00:02:46.00 --> 00:02:48.03 we'll need two bits of information. 69 00:02:48.03 --> 00:02:50.06 The location line of the wall to divide 70 00:02:50.06 --> 00:02:52.04 and the wall geometry. 71 00:02:52.04 --> 00:02:54.00 To get the location line, 72 00:02:54.00 --> 00:02:55.08 let's right click the canvas 73 00:02:55.08 --> 00:03:00.05 and search GetLocation. 74 00:03:00.05 --> 00:03:03.02 This retrieves the location line of an element. 75 00:03:03.02 --> 00:03:05.01 So we can plug the element into there 76 00:03:05.01 --> 00:03:07.07 and next, we want the element geometry. 77 00:03:07.07 --> 00:03:13.08 To do this we can use the Element.Geometry node. 78 00:03:13.08 --> 00:03:15.07 And plug that in. 79 00:03:15.07 --> 00:03:17.00 Just like the window data, 80 00:03:17.00 --> 00:03:19.02 we also need to store this data 81 00:03:19.02 --> 00:03:22.04 so that Dynamo does not need to retrieve it over and over. 82 00:03:22.04 --> 00:03:25.08 So let's add in two more remember nodes 83 00:03:25.08 --> 00:03:28.04 and we'll plug the location line into one 84 00:03:28.04 --> 00:03:31.05 and the geometry into the other. 85 00:03:31.05 --> 00:03:34.03 If we go ahead and run the script, 86 00:03:34.03 --> 00:03:36.00 we can see we're getting an error 87 00:03:36.00 --> 00:03:38.09 because we haven't selected a wall element yet. 88 00:03:38.09 --> 00:03:41.00 These nodes will work once the user 89 00:03:41.00 --> 00:03:43.00 has selected a wall. 90 00:03:43.00 --> 00:03:44.07 Great, so we have the Revit data. 91 00:03:44.07 --> 00:03:46.08 We will need to run our graph. 92 00:03:46.08 --> 00:03:49.03 Next, we need the variables that can change 93 00:03:49.03 --> 00:03:50.09 for different design options. 94 00:03:50.09 --> 00:03:53.09 For that, let's add in two integer sliders. 95 00:03:53.09 --> 00:03:56.00 We can find these sliders 96 00:03:56.00 --> 00:03:58.00 by right clicking the canvas 97 00:03:58.00 --> 00:04:01.09 and searching Integer and Integer Slider should show up. 98 00:04:01.09 --> 00:04:03.03 Once you've placed one, 99 00:04:03.03 --> 00:04:06.01 let's copy and paste it using Control + C 100 00:04:06.01 --> 00:04:07.08 and Control + V. 101 00:04:07.08 --> 00:04:10.01 We want both of these sliders to be inputs. 102 00:04:10.01 --> 00:04:12.00 So let's right click both of them 103 00:04:12.00 --> 00:04:15.09 and select Is Input. 104 00:04:15.09 --> 00:04:17.02 The first slider we'll use 105 00:04:17.02 --> 00:04:19.08 to specify the number of segments 106 00:04:19.08 --> 00:04:22.03 to create in the wall location line. 107 00:04:22.03 --> 00:04:25.03 So let's rename it by right clicking it 108 00:04:25.03 --> 00:04:27.04 and selecting Rename Wall 109 00:04:27.04 --> 00:04:33.05 and we'll rename it to Number of Wall Segments. 110 00:04:33.05 --> 00:04:35.02 And hit Accept. 111 00:04:35.02 --> 00:04:39.04 This name will now show up in the Generative Design dialog. 112 00:04:39.04 --> 00:04:42.06 Next, let's adjust the max and min of the slider 113 00:04:42.06 --> 00:04:45.03 and we can do that by selecting this button here 114 00:04:45.03 --> 00:04:48.00 to the left. 115 00:04:48.00 --> 00:04:52.06 For the min, let's change it to two and the max, 40. 116 00:04:52.06 --> 00:04:54.03 By having the min as two, 117 00:04:54.03 --> 00:04:56.08 it means that we'll always have a minimum 118 00:04:56.08 --> 00:04:58.08 of two segments of wall, 119 00:04:58.08 --> 00:05:05.08 which means we'll place at least one window in the middle. 120 00:05:05.08 --> 00:05:07.06 The second slider will be used 121 00:05:07.06 --> 00:05:09.02 to select the window type. 122 00:05:09.02 --> 00:05:16.06 So let's rename it Window Selection. 123 00:05:16.06 --> 00:05:18.00 For the range of this one, 124 00:05:18.00 --> 00:05:20.08 we want to limit it to the amount of windows 125 00:05:20.08 --> 00:05:24.03 that are available, which we know is 17. 126 00:05:24.03 --> 00:05:27.06 So the max will be 16 and the min zero. 127 00:05:27.06 --> 00:05:32.04 This is because lists always start at index zero. 128 00:05:32.04 --> 00:05:33.06 Perfect. 129 00:05:33.06 --> 00:05:34.04 The last thing we need to do 130 00:05:34.04 --> 00:05:36.00 is retrieve the width and height 131 00:05:36.00 --> 00:05:39.09 of the window type that this slider is set to. 132 00:05:39.09 --> 00:05:44.06 To do that, let's add in two GetItemAtIndex nodes 133 00:05:44.06 --> 00:05:48.08 by right clicking and searching GetItemAtIndex. 134 00:05:48.08 --> 00:05:54.08 And then copy and pasting that node. 135 00:05:54.08 --> 00:05:57.04 And we'll move them over to the remember nodes 136 00:05:57.04 --> 00:05:59.03 of the wall data. 137 00:05:59.03 --> 00:06:01.01 For the index inputs, 138 00:06:01.01 --> 00:06:04.06 we want to use the slider that we just created. 139 00:06:04.06 --> 00:06:14.09 So we'll plug that into both of these indexes. 140 00:06:14.09 --> 00:06:16.03 And for the list inputs, 141 00:06:16.03 --> 00:06:25.01 we want the width information and the height information. 142 00:06:25.01 --> 00:06:27.09 Great, so now based on the window selection, 143 00:06:27.09 --> 00:06:32.03 we'll have the relevant width and height. 144 00:06:32.03 --> 00:06:34.04 The last thing we need to do is group all 145 00:06:34.04 --> 00:06:39.03 of our nodes and color it pink. 146 00:06:39.03 --> 00:06:42.01 This indicates the sections as inputs 147 00:06:42.01 --> 00:06:44.04 and also makes our graph a little bit tidier. 11360