AutoCAD 3D Navigation and Visualization: Tuesday Tips With Frank

[The AutoCAD Blog]

AutoCAD is often considered a 2D CAD software product, but it also has an extremely robust 3D environment. Accessing it is as easy as switching to one of the two 3D workspaces included by default. But, like moving into a new neighborhood or going to a new school, one of the first things you need to do is learn how to get around, and the 3D world of AutoCAD is no different.

You’ll be glad to know that zooming and panning in 3D work the same way as they do in 2D, so you’ve got a bit of a head start. You’ve probably already noticed some of the 3D viewing and navigation interface elements that bleed into the 2D world. They can be used there, but they’re really not very useful, so chances are you’ve ignored them. But, in 3D, they are useful, and they’re the subject of today’s post.

Please refer to the image below. The widgets in the upper left labeled as #1 are technically called Viewport Controls. The #2 item is the View Cube, and #3 is the Navigation Bar (or NavBar for short). There are some other places to find these and other tools, but today, we’re paring it down to these three, along with some keyboard and mouse methods.

Viewport Controls

Let’s start with the Viewport Control tools. There are three parts to it, and it’s an extremely efficient way to interact with your 3D model. The left widget brings up your Viewport Controls, the center one contains your View Controls, and the one on the right lets you quickly specify your Visual Style.

The following image shows the popup menu for each of the three widgets. As a 2D user, you probably equate viewport configuration to layouts. However, in the world of 3D modeling, setting up different views in Model Space can be pretty helpful. I wrote about it here on our blog as part of my Tuesday Tips series. In fact, I’m using the same model for this post as I did then (sometimes, the fine line between efficiency and laziness is a bit blurry with me.)

The View Controls (middle) is an extremely efficient way to quickly switch to a preset view of your model. Setting one takes just two mouse clicks. You can choose between all orthographic projections or from four isometric views.

The same can be said for setting a visual style. Depending on your model and workflow, you may want to change how it appears. Most of us modeling in 3D AutoCAD will have a favorite and just leave it that way. Experiment with each, and no doubt you’ll find a favorite also.

Let’s set the top view of our model to be shown in the SW Isometric view and its visual style to be Shaded with Edges. When you set the view, some of the interface elements will change. I’ve either enlarged them or pointed to them in the image below. The Viewport Controls widgets will change to reflect the current setting, the View Cube will rotate to show the current view, the cursor will change into its 3D style, and the UCS icon will change.

View Cube

Let’s now consider the View Cube. It is yet another very efficient way to change your view to a preset. Without delving too deeply into how it works (that might be a future Tuesday Tip), let’s just say that it’s a more visual, interactive way to change your viewing angle. The cube itself is made up of tiles on the faces, edges, and corners that you pick with your cursor to set that view.

You can also select one of the cardinal directions (N, S, E, W) or pick and drag your mouse along the circular compass below the cube. A home icon and a menu dropdown will also appear when you first hover over the View Cube. To change your “home view,” just right-click anywhere on the View Cube, and click “Set Current View as Home.”

Navigation Bar

Finally, there’s the NavBar, which shows up on the right side of the drawing editor and below the View Cube. I’m only going to talk about one of the tools within it. But it consists of – from top to bottom – the steering wheel tools (yet another full blog post of its own), pan and zoom, the Orbit tools, and, at the bottom, the Show Motion tool. Let’s focus on Orbit.

Notice there’s a little drop-down arrow just below the icon. Clicking it will allow you to set your Orbiting to a constrained orbit, a free orbit, or a continuous orbit.

Again, you’re invited to try all three, and no doubt one style will become your favorite. To read about the differences between these, go to the help page on the subject.

Keyboard/Mouse Combos

With all that having been said about the interface tools, in reality, you’ll be like most users, and you’ll do all of your navigating with either just your mouse or with mouse/keyboard combos. You already probably pan and zoom with your mouse (and if you don’t… why not?).

When you’re in a 3D view, your depressed scroll wheel becomes the 3DORBIT command when used in conjunction with your Shift key. So, there’s no slowing yourself down by taking your eyes off your work to hunt down an icon. Your hands are already in place, so use them! Do you like to use Free Orbit? No problem, just add the Ctrl key, making it a Shift/Ctrl combo with the mouse wheel.

Get Going With 3D

Hey, it’s a 3D world out there, and if you’re still using AutoCAD as just a 2D tool, there’s probably a good chance you’ll be using a 3D workspace sometime soon. Now’s a good time to get familiar with your new neighborhood and to learn how to get around efficiently.

All the methods I’ve discussed today are great to know. Try them all out and find your favorite methods. When you do get the call to work in 3D, you’ll be ahead of the game from the beginning.

More Tuesday Tips

Check out our whole Tuesday Tips series for ideas on how to make AutoCAD work for you.

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