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These are the user uploaded subtitles that are being translated: 1 00:00:00.05 --> 00:00:01.06 - [Instructor] The final section 2 00:00:01.06 --> 00:00:04.06 of any generative design script is the outputs. 3 00:00:04.06 --> 00:00:06.08 This is where we can indicate data 4 00:00:06.08 --> 00:00:08.04 to score each option, 5 00:00:08.04 --> 00:00:10.05 data that we want to send back to Revit 6 00:00:10.05 --> 00:00:13.09 and geometry that will be shown with each design. 7 00:00:13.09 --> 00:00:17.01 So in this lesson, let's create those outputs. 8 00:00:17.01 --> 00:00:20.00 I currently have the Revit and dynamo exercise files 9 00:00:20.00 --> 00:00:21.04 open for this lesson. 10 00:00:21.04 --> 00:00:24.03 Which is where we left off from in the last lesson. 11 00:00:24.03 --> 00:00:25.05 So to begin, 12 00:00:25.05 --> 00:00:28.01 let's start by grouping those evaluated nodes 13 00:00:28.01 --> 00:00:29.06 that we created 14 00:00:29.06 --> 00:00:36.04 and we'll rename that section to evaluate well length. 15 00:00:36.04 --> 00:00:40.08 Perfect. Now let's focus on the output section. 16 00:00:40.08 --> 00:00:42.08 In our case, there'll be four pieces 17 00:00:42.08 --> 00:00:47.03 of data that we'll want to either minimize or maximize. 18 00:00:47.03 --> 00:00:48.09 The first is the overall length 19 00:00:48.09 --> 00:00:51.06 of the windows in relation to the wall. 20 00:00:51.06 --> 00:00:53.04 We're already retrieving this 21 00:00:53.04 --> 00:00:56.00 from within the evaluator section that we did 22 00:00:56.00 --> 00:01:04.04 in the last lesson, from this subtraction node. 23 00:01:04.04 --> 00:01:05.07 At the moment 24 00:01:05.07 --> 00:01:10.02 we can see that it's outputting negative 2,618. 25 00:01:10.02 --> 00:01:14.01 When we optimize this graph, we want to reduce this number. 26 00:01:14.01 --> 00:01:16.09 However, sometimes we're going to have negative numbers 27 00:01:16.09 --> 00:01:19.00 which won't really make sense. 28 00:01:19.00 --> 00:01:21.01 We need to make them positive. 29 00:01:21.01 --> 00:01:24.03 So to do that, let's place an absolute node 30 00:01:24.03 --> 00:01:29.02 by right clicking and searching math dot abs 31 00:01:29.02 --> 00:01:33.01 and then plug that value into the absolute node. 32 00:01:33.01 --> 00:01:36.08 This node will always output a positive number 33 00:01:36.08 --> 00:01:37.06 as we can see 34 00:01:37.06 --> 00:01:42.02 we are now getting positive 2,618. 35 00:01:42.02 --> 00:01:44.04 Next let's right click the node 36 00:01:44.04 --> 00:01:48.03 and make sure it's an output by selecting is output 37 00:01:48.03 --> 00:01:51.04 and then we'll rename it so that it makes sense 38 00:01:51.04 --> 00:01:58.00 in rabbit, let's call it remaining length. 39 00:01:58.00 --> 00:02:01.01 The next output we need is the overlap value 40 00:02:01.01 --> 00:02:03.02 which is currently being output by this. 41 00:02:03.02 --> 00:02:05.02 If statement node 42 00:02:05.02 --> 00:02:07.04 we'll also want this to be a positive value 43 00:02:07.04 --> 00:02:09.03 so we can try to minimize it. 44 00:02:09.03 --> 00:02:12.05 So let's copy and paste this absolute node 45 00:02:12.05 --> 00:02:15.06 and we'll plug the output of the 46 00:02:15.06 --> 00:02:19.06 if statement node into the input of the absolute node 47 00:02:19.06 --> 00:02:24.09 and next let's rename the node to overlap. 48 00:02:24.09 --> 00:02:27.01 Perfect. There are two more data 49 00:02:27.01 --> 00:02:30.04 outputs which will help us optimize our designs. 50 00:02:30.04 --> 00:02:33.03 These are the height and width of the window that selected. 51 00:02:33.03 --> 00:02:36.03 In some cases we may want to minimize 52 00:02:36.03 --> 00:02:39.00 or maximize either of these values. 53 00:02:39.00 --> 00:02:40.07 So let's add 54 00:02:40.07 --> 00:02:45.02 in to watch nodes by searching for watch, and then copy 55 00:02:45.02 --> 00:02:48.01 and pasting that watch note. 56 00:02:48.01 --> 00:02:51.07 And then we'll retrieve the values that are being output 57 00:02:51.07 --> 00:02:56.06 by this list dot get item at index nodes 58 00:02:56.06 --> 00:02:59.06 as these are storing both the width and the height 59 00:02:59.06 --> 00:03:02.02 of the selected window. 60 00:03:02.02 --> 00:03:10.05 So let's plug both of those into the watch nodes 61 00:03:10.05 --> 00:03:12.05 and then we'll rename those appropriately. 62 00:03:12.05 --> 00:03:21.00 So the first will be the width and the second height 63 00:03:21.00 --> 00:03:29.02 and then let's make sure to set both of them as outputs. 64 00:03:29.02 --> 00:03:36.03 Great. Then let's group all of these outputs 65 00:03:36.03 --> 00:03:42.01 and we'll call that group scoring. 66 00:03:42.01 --> 00:03:44.08 Next we need to be able to visualize each design 67 00:03:44.08 --> 00:03:47.02 in the generative design dialogue for that. 68 00:03:47.02 --> 00:03:49.04 We want to see the windows removed 69 00:03:49.04 --> 00:03:51.07 from the wall to give us some indication 70 00:03:51.07 --> 00:03:53.02 of the window spacing. 71 00:03:53.02 --> 00:03:56.07 So to do that, let's add in a solid dot difference 72 00:03:56.07 --> 00:04:03.04 or node by searching for solid dot difference. 73 00:04:03.04 --> 00:04:06.01 This will remove a collection of geometry 74 00:04:06.01 --> 00:04:08.00 from another piece of geometry. 75 00:04:08.00 --> 00:04:09.05 So for the first input, 76 00:04:09.05 --> 00:04:12.05 let's add in the geometry of the wall 77 00:04:12.05 --> 00:04:18.04 whichever trade from this data dot remember node. 78 00:04:18.04 --> 00:04:23.00 Next let's subtract the cuboids of the windows 79 00:04:23.00 --> 00:04:27.04 which we can get from this cuboid.by lengths node. 80 00:04:27.04 --> 00:04:31.01 And we'll put that into the second input. 81 00:04:31.01 --> 00:04:31.09 To visualize this, 82 00:04:31.09 --> 00:04:34.05 we need to turn the preview of the cuboids 83 00:04:34.05 --> 00:04:38.09 off by right, clicking it and selecting preview 84 00:04:38.09 --> 00:04:41.08 and then let's decrease the amount of windows. 85 00:04:41.08 --> 00:04:44.03 So it can make sense of the model. 86 00:04:44.03 --> 00:04:47.09 Perfect. 87 00:04:47.09 --> 00:04:49.03 The generic 88 00:04:49.03 --> 00:04:52.07 of design dialogue in Revvit will actually display any 89 00:04:52.07 --> 00:04:54.00 of the preview geometry the way showing 90 00:04:54.00 --> 00:04:56.05 in dynamo for each option. 91 00:04:56.05 --> 00:04:58.03 So let's remove the points we currently have 92 00:04:58.03 --> 00:04:59.07 in the view by right 93 00:04:59.07 --> 00:05:03.02 clicking the geometry dot translate node and turning preview 94 00:05:03.02 --> 00:05:06.03 off. The last output that we'll need to set 95 00:05:06.03 --> 00:05:11.06 up is the integration of dynamo elements to Revvit elements. 96 00:05:11.06 --> 00:05:13.07 We'll need to place windows based 97 00:05:13.07 --> 00:05:15.07 on the window type that's selected 98 00:05:15.07 --> 00:05:18.04 at the point locations that we have generated 99 00:05:18.04 --> 00:05:20.08 in the generator section of the script. 100 00:05:20.08 --> 00:05:22.04 As we can see, I've already set 101 00:05:22.04 --> 00:05:25.06 up this integration in this last output block 102 00:05:25.06 --> 00:05:30.00 we need to place the window as a family, within a host. 103 00:05:30.00 --> 00:05:32.09 That is the wall, which is why I've needed to resort 104 00:05:32.09 --> 00:05:35.05 to a Python script, dynamo nodes. 105 00:05:35.05 --> 00:05:37.08 Don't provide this functionality out of the box. 106 00:05:37.08 --> 00:05:40.03 Unfortunately 107 00:05:40.03 --> 00:05:41.06 if you're familiar with Python, I suggest opening it 108 00:05:41.06 --> 00:05:45.06 up and having a look through the code for those that aren't. 109 00:05:45.06 --> 00:05:46.07 However 110 00:05:46.07 --> 00:05:51.06 it basically allows us to input a family type a wall 111 00:05:51.06 --> 00:05:53.01 and a list of points 112 00:05:53.01 --> 00:05:56.05 which it all then use to create windows at those points. 113 00:05:56.05 --> 00:05:57.07 So for the first input 114 00:05:57.07 --> 00:06:00.09 which will be the family type, I've added this get item 115 00:06:00.09 --> 00:06:04.07 at index node to that, let's add in the list 116 00:06:04.07 --> 00:06:11.05 of retrieved family types from the input section 117 00:06:11.05 --> 00:06:19.06 which will be from this list dot flattened node 118 00:06:19.06 --> 00:06:22.08 and for the index, let's use the current selection 119 00:06:22.08 --> 00:06:25.06 of the window type on the slider. 120 00:06:25.06 --> 00:06:26.08 So back 121 00:06:26.08 --> 00:06:29.09 at the input section, let's take this window selection 122 00:06:29.09 --> 00:06:33.09 and we'll plug it into the index of that node. 123 00:06:33.09 --> 00:06:35.09 As this Revvit integration, isn't included 124 00:06:35.09 --> 00:06:40.02 with each run of the script due to the gate node. 125 00:06:40.02 --> 00:06:42.02 This data does not need to come 126 00:06:42.02 --> 00:06:46.03 from my remember node for the second input. 127 00:06:46.03 --> 00:06:48.06 Let's use the selected wall. 128 00:06:48.06 --> 00:06:50.04 So all the way back 129 00:06:50.04 --> 00:06:54.08 in the input section, let's take this wall element 130 00:06:54.08 --> 00:06:58.05 and we'll plug it into input one. 131 00:06:58.05 --> 00:06:59.04 And finally 132 00:06:59.04 --> 00:07:01.03 for the last input, we'll need the generated points 133 00:07:01.03 --> 00:07:04.03 which will be fed into this data dot gate node. 134 00:07:04.03 --> 00:07:07.08 So let's that in these points, which we generated 135 00:07:07.08 --> 00:07:12.01 with this curve dot points at equal segment length node. 136 00:07:12.01 --> 00:07:12.09 And we'll plug that 137 00:07:12.09 --> 00:07:18.00 into the gate because these points are not input directly 138 00:07:18.00 --> 00:07:19.05 into the Python script. 139 00:07:19.05 --> 00:07:23.00 It won't be executed until we actually open this gate 140 00:07:23.00 --> 00:07:27.04 or we create the elements on the generic design dialogue. 11297