1 00:00:01,002 --> 00:00:03,002 - [Instructor] Soft selection is a great tool 2 00:00:03,002 --> 00:00:06,006 for modeling and it's found in the editable poly 3 00:00:06,006 --> 00:00:10,007 and editable mesh objects and their associated modifiers. 4 00:00:10,007 --> 00:00:15,004 But soft selection is generally a destructive process. 5 00:00:15,004 --> 00:00:20,004 You can't really reverse the operations of soft selection. 6 00:00:20,004 --> 00:00:23,002 So it's not really well suited to situations 7 00:00:23,002 --> 00:00:26,004 in which you want to change the level of detail of a model, 8 00:00:26,004 --> 00:00:27,007 for example. 9 00:00:27,007 --> 00:00:30,006 For that you need some parametric solution 10 00:00:30,006 --> 00:00:32,006 and it is possible to use soft selection 11 00:00:32,006 --> 00:00:36,001 in combination with a selection modifier, 12 00:00:36,001 --> 00:00:38,001 but that's actually pretty cumbersome 13 00:00:38,001 --> 00:00:40,001 and gets kind of complicated. 14 00:00:40,001 --> 00:00:41,008 However there's an easier way, 15 00:00:41,008 --> 00:00:45,002 which is the effect region modifier. 16 00:00:45,002 --> 00:00:46,005 I've got a simple plane here 17 00:00:46,005 --> 00:00:50,000 and I'm going to apply the effect region, 18 00:00:50,000 --> 00:00:52,005 allowing me to move part of the model around 19 00:00:52,005 --> 00:00:54,001 and change its shape. 20 00:00:54,001 --> 00:00:56,002 Then I'll be able to go and change the level 21 00:00:56,002 --> 00:00:58,009 of detail of the model afterward. 22 00:00:58,009 --> 00:01:00,008 I'll select that plane. 23 00:01:00,008 --> 00:01:03,001 Go to the modify panel. 24 00:01:03,001 --> 00:01:04,008 We see it's a procedural primitive. 25 00:01:04,008 --> 00:01:08,008 A plane with a certain number of length and width segments. 26 00:01:08,008 --> 00:01:13,006 Let's apply the effect region modifier. 27 00:01:13,006 --> 00:01:15,009 And we see a big bubble there. 28 00:01:15,009 --> 00:01:18,003 Let's zoom out to enclose that geometry. 29 00:01:18,003 --> 00:01:22,001 Use the Z keyboard shortcut for that. 30 00:01:22,001 --> 00:01:23,000 We can't really see it 31 00:01:23,000 --> 00:01:24,009 because it's obscured by the geometry, 32 00:01:24,009 --> 00:01:29,000 but there's an arrow gizmo inside the model. 33 00:01:29,000 --> 00:01:32,004 So let's go into wire frame mode with F3. 34 00:01:32,004 --> 00:01:35,005 We can orbit around with alt and middle mouse. 35 00:01:35,005 --> 00:01:37,005 So this arrow here is the gizmo 36 00:01:37,005 --> 00:01:39,008 for the effect region modifier 37 00:01:39,008 --> 00:01:42,004 and we've got points on either end. 38 00:01:42,004 --> 00:01:45,003 This point down here is the original point 39 00:01:45,003 --> 00:01:47,008 on the surface of the model. 40 00:01:47,008 --> 00:01:48,008 We've got a point up here, 41 00:01:48,008 --> 00:01:52,005 which is the new location of that surface. 42 00:01:52,005 --> 00:01:54,003 We can change the fall off amount here. 43 00:01:54,003 --> 00:01:58,001 Reduce that and get a sharper transition there. 44 00:01:58,001 --> 00:01:59,003 Just like with soft selection, 45 00:01:59,003 --> 00:02:02,002 we have pinch and bubble parameters. 46 00:02:02,002 --> 00:02:05,000 I'll set them both back to zero. 47 00:02:05,000 --> 00:02:06,001 To change the shape, 48 00:02:06,001 --> 00:02:09,005 we can go into the points sub-object mode. 49 00:02:09,005 --> 00:02:11,004 Open up the sub-objects, 50 00:02:11,004 --> 00:02:14,009 choose points, and then we can click on one 51 00:02:14,009 --> 00:02:18,001 or both of these points and move them around. 52 00:02:18,001 --> 00:02:21,004 Generally, we want to leave this point at the bottom here, 53 00:02:21,004 --> 00:02:24,001 somewhere on the original surface. 54 00:02:24,001 --> 00:02:29,009 But this top point we can move around to change that shape. 55 00:02:29,009 --> 00:02:31,004 If we move this point here, 56 00:02:31,004 --> 00:02:33,001 we probably want to move it only 57 00:02:33,001 --> 00:02:36,005 in the X and Y axes in this case. 58 00:02:36,005 --> 00:02:40,006 We can change its position and change the position 59 00:02:40,006 --> 00:02:42,007 of the other point as well. 60 00:02:42,007 --> 00:02:46,000 But if we move this off of the original surface, 61 00:02:46,000 --> 00:02:49,001 then that's going to diminish the effect. 62 00:02:49,001 --> 00:02:49,009 So I don't want to do that. 63 00:02:49,009 --> 00:02:52,004 I'll undo that with Control + Z. 64 00:02:52,004 --> 00:02:54,005 We can layer this deformation by adding 65 00:02:54,005 --> 00:02:57,007 as many effect region modifiers as we need. 66 00:02:57,007 --> 00:03:03,005 I'll exit out of subject mode and add another effect region. 67 00:03:03,005 --> 00:03:05,006 Once again, open it up, 68 00:03:05,006 --> 00:03:08,006 go into points, sub-object mode, 69 00:03:08,006 --> 00:03:11,000 and we can select both of the points 70 00:03:11,000 --> 00:03:12,009 and move them both in X and Y. 71 00:03:12,009 --> 00:03:14,009 Position that over here maybe. 72 00:03:14,009 --> 00:03:20,001 Then select the top point and move it down or move it over. 73 00:03:20,001 --> 00:03:21,000 As we orbit around, 74 00:03:21,000 --> 00:03:23,007 we see that those two effect region modifiers 75 00:03:23,007 --> 00:03:26,006 are adding their cumulative. 76 00:03:26,006 --> 00:03:29,008 Okay, I'll exit out of sub-object mode once again 77 00:03:29,008 --> 00:03:33,000 and go down to the level of the primitive object, 78 00:03:33,000 --> 00:03:34,006 which is the plane. 79 00:03:34,006 --> 00:03:37,005 Select plane in the stack and we can increase 80 00:03:37,005 --> 00:03:39,009 or decrease the level of detail. 81 00:03:39,009 --> 00:03:43,002 Bring the length segments up to 50, press tab, 82 00:03:43,002 --> 00:03:47,003 set the width segments to 50 as well and press enter. 83 00:03:47,003 --> 00:03:49,004 We've just non-destructively increased the level 84 00:03:49,004 --> 00:03:54,000 of detail without changing the overall shape of the model. 85 00:03:54,000 --> 00:03:56,008 That's how to use the effect region modifier 86 00:03:56,008 --> 00:03:59,008 for non-destructive soft transformations.