Use the Selection Tree to add objects to the appropriate clash tests. The Selection Tree provides visual feedback about the objects you are adding to your tests.
- I now want to focus on the Selection Tree. And to do that, I'm going to start by actually minimizing the Clash Detective so that it's not filling up my screen. So I'll select on this little button here which looks like a pinhead, which is Autohide. And now we can see the Selection Tree over here. And I'll expand out the Selection Tree, just by highlighting here on the edge. And when I see what looks like two little arrows with a black line going up and down the middle of it, I'll click, hold my mouse button down and drag it out a little way so we can see the Selection Tree a bit better. Here in the Selection Tree, if I scroll, I can see that I have a wide variety of different kinds of files available to me. In this case, it happens to be the three files that are all linked into this model. And if I would expand out the various categories here, we can see that these are categories, such as the overall categories like Analytical Beams, Analytical Walls, Structural Loads. In the architectural model, more architectural elements. Ceilings, curtain walls, doors, floors, parking. If I click the little plus next to the RME, which is mechanical and electrical, we can see Air Terminals, Cable Trays, Ducts, Electrical Systems, Lighting, Pipes. The important thing to remember is is that the categories that you see here in the Selection Tree, in these areas, these are all objects that are inside of, well, first, associated with at level, and B, are actually inside of the model itself. That's the reason why as we scroll down to some of these others, why we see Conduits inside of the file that does the Electrical. But if we scroll up to the Architectural, we're not seeing Conduit as one of the options. Because typically, Conduit does not show up inside of the Architectural models. If we wanted to select on all the objects of a certain type, we could. Right now I happen to be in a view that's looking down at the roof, which means that if I can end up finding a category that shows the roof, I should be able to actually select on that roof object. Here we have Roof underneath the Architectural model, which is RAC sample, and if I click on Roofs, notice how the roof is now selected here? If I wanted to select on all the walls on that level, I would just have to click on Walls. It's hard to tell because the roof is sort of covering a lot of that area, but the walls have now been selected. And we can do this on a level by level basis, selecting on each one of those items. Additionally, if I come down here to the selection tool, just a click, I'll zoom in here so that I can see things just a little bit better. And then I click on this roof. If we look underneath the Selection Tree over here on the side, under Roofs, we can see that the basic Roof category has been expanded and the exact object that I selected has now shown up here in the Selection Tree. The Selection Tree does exactly what it sounds like. It allows you to select objects in your various models, or if you select objects here inside of your model environment, those objects will then display as being selected there in your Selection Tree. And finally, the reason why all of this is important is that anything that's highlighted in the Selection Tree can then be associated with your Clash test, either directly into the Clash test themselves, or by creating a set of elements out of them which means that any item which is currently selected in the Selection Tree can be grouped together into a set that can then be used for your Clash Detections later on. And we'll talk more about sets in just a few videos.