Skill Level Intermediate
- [Instructor] Oftentimes we need to make multiple copies of objects in a circular pattern or array. If you are familiar with creating multiple copies and rotating, you will have no trouble performing a polar array. This video gives you a brief rehearsal of all three. In our exercise file, we will practice polar array in two different areas, dining tables and exterior walls. Before we use the polar array function, let's have a quick refresh on creating multiple copies and rotating. Click the Practice Scene tab. We are in top view of the rectangular dining table I created from an online site that builds custom furniture. Isn't that fun? The chair I downloaded from the 3D warehouse, which was designed by Raquel Mueller and modeled by Sergio. There are two types of multiple copies and they both involve math, multiply and divide. We will first make multiple copies of this chair along the same side the red access using the divide method. Select the chair and activate move. To activate Copy, hit Control key on a Windows computer, or the Option key on a Mac. Find the midpoint of the chair. Of course, we will zoom in. Click and release, lock in the red access and move your mouse over to the opposite side of the table to find the guide point I created, and click and release there. Now, before you do anything else, you need to type in the number of copies you need. That means you cannot orbit, or pan, or space bar, or anything like that. Otherwise multiple copies will not work. We need a total of four chairs along this side. So including this copy, we need to create three copies. Type 3/ and hit enter. With the divide method, the number of copies are spaced evenly apart from the beginning object to the end object. The second method involves multiplying. On the other side of the table, click the mid point of the chair. First we need to select the chair, activate Move, zoom in, find our midpoint, click the midpoint of the chair and activate Copy. Again, Control key on Windows or Option key on the Mac. These chairs are approximately two feet four inches apart from each other. So after we lock in our red access, we can type in the increment two feet four, and hit enter. We immediately need to type in our number of copies. We want three copies, so we will type three. And this time we will type X for times, or multiply and hit enter. We accomplished the same tasks on either side of the table. One with the divide method and the other with the multiply. Finally, we need to practice rotating and copying a chair. And we'll do that with this chair at the head of the table. We will rotate and copy it so it is mirrored on the opposite side of the table. We need to create a guideline or edge that finds the center of the table. I will create an edge. With your chair selected, activate the Rotate tool, and then activate Copy, click the center point of the edge you created, click a second time along the access to align the protractor. Move your mouse. And now we can either rotate all the way around and click. Or if you look at your value control box, it reads angle 180 from here. So we can type in that angle for accuracy, 180, Enter. Now let's click the Polar Array tab. I modeled this outdoor dining table created by furniture designer Hu Ay. We will make a total of six chairs around the table using Polar Array. We need the Rotate tool and the Copy tool. There are a few ways to accomplish this. I will show you one way and you can practice other ways on your own. Of course, we need to first select the chair and activate Rotate. We'll lock in our blue access with the up arrow key so we don't accidentally deviate to another. We'll activate the Copy tool. Find the center of the table as the object we're using for the array distancing. You can hover around until your mouse snaps to the center, and click. A second click along the red access will align the protractor. Move your mouse and type the angle 60, 60 enter. Before you do anything else, we need to enter in the number of copies, which is five, and we'll use the multiply method. We'll type five X enter. Finally, let's click the Windows Scene tab. I want to show you that you can create a polar array using rectangular objects. We will copy these windows all the way around the building using the polar array. This time, let's try the divide method. Select the windows, activate Rotate, activate Copy, lock in the blue access and find the midpoint of the guideline I created for you. We will click once. We'll click a second time along an access to align the protractor and we will move our mouse and type in the angle 270, hit enter. Using the divide method, we will type 3/ because we want three copies of both windows all the way around, and hit enter. When you're done, check that they were all copied correctly. I like to do this to make sure they are aligned. Creating linear and polar arrays is easy as long as you know how to create multiple copies and use the Rotate tool. Adding this knowledge to your SketchUp tool belt will supercharge your productivity.