Join Paul F. Aubin for an in-depth discussion in this video Understanding view extents and crop regions, part of Revit 2018: Essential Training for Architecture (Imperial).
- [Voiceover] In this movie we're going to talk about crop regions. When you crop review in Revit, it limits the view to displaying only the elements that appear within the crop region. So, every view can have a crop region, whether it's a floor plan, an elevation, a section or even 3D views, and so what we're going to do in this movie is look at ways we can manipulate those crop regions to control what we want to see in each of the views. So, I'm in a floor plan right now, and what I'm going to do is do Z + F to zoom to fit, and then I'm going to type Z + O to zoom out two times, and notice that as I zoom out the outermost extent of this view is these elevation marks right here.
However, if I were to draw a wall, and I'll just do a simple generic wall, and place it out here somewhere. Notice that wall will display. If I zoom out two times further and draw a second wall further way, notice that wall will display. In other words, there really is no limit right now on the extent of this view. In fact, the extents are going to be calculated automatically based on the geometry that's currently in the view. Now, let me delete this wall, but I'm going to keep this one, and let's turn on the crop region.
So, the reason that we can draw indefinitely is because currently there's no crop region enabled in this view. So, the extents are essentially infinite. There are two places you can go to enable and display the crop region. The first is to make sure that there's nothing selected in the view. The Properties palette will display the properties of the floor plan itself. I'm gonna scroll down, and under Extents you'll see a series of check boxes. The first one says crop the view, and the second one says crop region visible.
Crop the view corresponds to this icon down here on the View control bar, and Crop Region Visible corresponds to this icon. So, If I check crop the view here, and apply it, it will change the mode of that icon as well. Now, when you crop the view if you don't turn on the visibility, then you can't see it, so let's also turn on the visibility of the crop region, and again you'll see the icon change on the View control bar, and now you're gonna see this rectangle appear around the floor plan, and that's the crop region.
So, notice that on these three sides Revit just made the crop region a little bit larger than the extent of the elevations, but on this side it took this wall that we drew into account. So, now that we have that, I'm gonna zoom in a little bit. If I select the crop region you can adjust it, so these small little grips at the corner allow me to stretch the crop region, and notice that if I pull it in a little bit closer it'll start to crop out a portion of that wall off to the side, and in fact if I pull that crop region in much closer that entire wall will disappear.
Now, the wall is still there in our model, and we'll be able to see it in other views, but it just no longer displays here in the floor plan. Now, if I do a similar manipulation on this side, I can actually take this crop region, and pull it in far enough that it actually starts to crop out entire sections of the building model. So, in cases where you need a smaller crop region because you want to fit this view onto a smaller sheet of paper, or you're only interested in a couple of the rooms, you can simply enable the crop region, and crop it down to just a smaller area.
I'm gonna go ahead and stretch this back out again. Now, my elevations and sections also have crop regions, so what I'm gonna do is open up the south elevation, and I'm gonna do that by just double clicking this blue triangle right here. Now, you'll be able to tell that this view is cropped because you see how we're only seeing part of a tree right here, and we're getting this straight line edge on the topography on both sides. So, if I come down to the View control bar here, and click the small icon to disable the crop, now what you're going to see is it's gonna display the entire model, and if I zoom out far enough, you'll see that small wall that I drew earlier.
I'm gonna delete that wall, I no longer want it, and I'm gonna turn the cropping of this view back on again. Now, if you wanna adjust the size of the crop, then you just need to turn on the visibility, and then here's the rectangle, and you could manipulate it with the grips. I'm gonna turn that back off again. So, I'm gonna go back to the Level 1 floor plan, and this time I'm gonna select this section right here, right click it, and choose Go To View. Now, you can see that this section is also cropped, and if we wanted to display the crop we could turn on the icon once again, and there's our crop region right there.
Now, I can certainly reduce this down to focus more on the stair as an example, but in these three directions I have straight lines, but in this direction, maybe I wanna follow that diagonal, or the shape of the roof or the ceiling. Well, I can pull this down and get close to follow the shape of the ceiling there, but it's not going to take care of this angled portion of the wall, so one of the things that you can do is with the crop region selected you can actually click this button here to edit that crop.
That will take you into sketch mode, and then you can sketch the shape that you want the crop region to have. So, I'll just click the line option here, pick up start point, kind of draw diagonally following the same angle as the roof, cancel out the command, and then use trim and extend to clean up these corners. When I'm done I'll click finish, and now you'll see that the crop region matches that shape more closely. Once again, if you were to disable the crop it would show the entire building, but the crop region shape is still customized, so later when you re-enable it will go back to the custom shape.
Now, if you want to, you can actually draw the shape of the crop region at the time you create the view. So, if I go back to Level 1 floor plan, let's say that I wanted to do an enlarged view of the Reception and Corridor area. So, what I'm gonna do is go to the View tab, and on the Callout button you have two options: draw by rectangle, or draw by sketch. So, I'm gonna choose draw by sketch, and then what I'm gonna do is just using the straight line option here, I'm just gonna follow that wall of the corridor, kind of come over here, wrap around, go close to the entryway, come back up here, and then finish off like so.
You do need to make an enclosed shape, but notice that I could make this irregular shape like this, it doesn't have to be a perfect rectangle, and when I finish you'll see the crop region now conforms to that shape. I'm gonna take this little bubble here, and move it off to the side, and then I'm gonna select the Callout, right click, and choose Go to View, and now notice that the crop region conforms to that shape you sketched. So, all views have a crop region that you can enable. They default to simple rectangles, but in plan sections and elevations you can actually customize the shapes to conform more closely to the geometry contained within the view.
The crop regions provide an excellent way for you to limit the scope of the view to just a particular area that you want to see, and it's great for getting views to fit comfortably on title blocks and sheets for printing.
First, get comfortable with the Revit environment, and learn to set up a project and add the grids, levels, and dimensions that will anchor your design. Then author Paul F. Aubin helps you dive into modeling: adding walls, doors, and windows; using joins and constraints; creating and mirroring groups; linking to external assets and DWG files; and modeling floors, roofs, and ceilings.
Paul also shows advanced techniques for modeling stairs and complex walls, adding rooms, and creating schedules. Finally, discover how to annotate your drawings so all the components are clearly understood, and learn how to output sheets to DWF, PDF, or AutoCAD.
- Understanding BIM and the Revit element hierarchy
- Navigating views
- Creating a new project from a template
- Adding walls, doors, and windows
- Adding plumbing fixtures and other components
- Linking AutoCAD DWG files
- Rotating and aligning Revit links
- Working with footprint and extrusion roofs
- Adding openings
- Adding railings and extensions to stairs
- Creating stacked and curtain walls
- Hiding and isolating objects
- Adding rooms
- Creating schedule views and tags
- Adding text and dimensions
- Creating new families
- Using reference planes, parameters, and constraints
- Plotting and creating a PDF