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CINEMA 4D Essentials with Rob Garrott is a graduated introduction to this complex 3D modeling, rendering, and animation program, which breaks down into installments that can be completed within 2 hours. This installment covers the basics of the 3D modeling toolkit: splines and polygons. Rob reveals the components behind polygonal-modeling (points, edges, and polygons) and how to manipulate them with the tools in CINEMA 4D. He then walks through splines, an alternative to polygons that uses curves to create 3D geometry. The final chapter shows how to combine these techniques by creating a model of a speaker system.
The Bridge tool really acts just like its name. It allows you to create spans between two different sections of polygons. Now, I've got a very simple scene file that we're starting with here. It's just two cubes and they are arranged along the X-axis. What I want to be able to do is to create a little bridge or span between these two objects going this direction along the X-axis. So, this is a multi-step process. The first step in this process is that I need to merge these two objects into a single polygon object. So, to do that, I'm going to select both objects in the Object Manager and I'll right-click.
And in the contextual menu that comes up, what I want to do is connect both objects and then delete the old objects. So let's do a Connect Objects and Delete. That leaves us with just a single object. You notice our scene hasn't changed its look but the Object Manager has changed. We now have one polygon object that contains all those polygons. Now, we can use the Bridge tool to bridge those two sets of polygons together. Before I do that, I want to create an inset on each of these faces. So, let's grab each polygon. So I've got the Selection tool active. I'll grab that polygon and I'll hold down the Shift key and I'll grab that polygon.
Now, let's right-click and grab the Extrude Inner tool. And this is great. We can do the Extrude Inner tool at the same time on both these polygons. I'll click and drag to the left to extrude inward. Let's make it nice and thin. Here we go! Now, what I want to do is to create a bridge between these and there's a couple of different ways I can do that. I can bridge the two polygons, if I right-click and go to the Bridge tool, if I click on these polygons and go, boom, like that. I've created a bridge. Now, the problem with that bridge as you can see is that it's twisted, it is not straight.
And I don't normally ever use the Bridge tool in Polygon mode; I just wanted you to see what would happen when you did. I'll undo that, Command+Z, and get back to where we were. Now, the way I prefer to use the Bridge tool is in Edge mode. Let's delete those polygons leaving our holes there, and let's now switch over to Edge mode. I've still got the Bridge tool active. If I can go from edge to edge, I'm going to know exactly how I'm creating those polygons. So, let's go from this edge here and go to this edge. This is where you've got to be really careful about which edge you're actually selecting. You can see that I wouldn't want to do any of these other edges.
I want to go right to there. You can see when I let go, that creates a nice little span. I'll do it from here to here, and then I'll do it from here to here, and then I'll do it from here to here. There we go! And now you can see I've spanned that gap with the Bridge tool. That's really the beauty of it. It allows you to quickly create a closure between two sections of polygons.
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