This indicates that your face is selected. The face on the inside of your triangle develops a blue shading. Now, click inside the triangle on the face – what happens? Close it back in so the SketchUp creates a face inside of it. For example, let’s use the triangle that we drew up above. You can use the select tools to select a face in SketchUp just like you would a line. You can’t stop SketchUp from creating faces between coplanar lines, but what you can do is delete the faces.
Occasionally, you’ll want to have groups of lines in SketchUp that are coplanar and intersect, but you won’t want a face between them. What happens if you erase one of the bounding edges of this shape? As you can see in the image below, if you erase one of the bounding edges, we no longer have the prerequisites for a face in SketchUp, so the face disappears. The lines around the shape are called the “bounding edges,” because they are the lines that make up the outside boundary of the shape. If I start with two lines, as shown below, then draw a third line between the two end points, what happens?Īs you can see, as soon as this shape is closed, SketchUp automatically creates a face between these three points because it now has the 2 prerequisites required to create a face – at least 3 coplanar (meaning on the same plane) lines and a closed shape. Let’s say that we draw a triangle using the line tool. In order to draw a face, SketchUp must have at least 3 lines that create a closed shape on a 2 dimensional plane (meaning that the 3 lines must all intersect at some point). Faces are two dimensional areas that are drawn between lines. The other kind of objects that exist in SketchUp are faces. They don’t have any area, they simply have a length.
At their most basic, these basically travel in one path between two points. Lines are the objects we created in our first tutorial. In order for us to move forward, I want to talk a little bit about the way models in SketchUp are made up.Įvery model in SketchUp, when broken down to its basic building blocks, contains two types of objects. In part one of my 2D SketchUp drawing tools tutorial (visit that tutorial by clicking here), we talked about using the 2D drawing tools to create lines.
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