Architectural_Design_with_SketchUp

Chapter 6 Creating Geometry Using Ruby Scripting
Figure 6.9: Boxes colored in the full spectrum
As you can see, adding a color (a “material”) to a face is very easy, too. You just need
to use one of the two related methods of the face object: material for the front side and
back_material for the reverse side. As before, the reverse side (the blue side) is pointing in
the direction of our extrusion, so we need to apply the material to that side.
Materials can be applied as a reference to a material that is already installed in SketchUp
(check for these in the Materials window), as a color name, or—as in our case—as a color
defined by RGB (red, green, blue) values. The following are all valid material assignments
(assuming that mat1 is a material that was previously defined in your code):
face.material = mat1
face.material = “red”
face.material = 0xff0000
face.material = “#ff0000”
face.material = Sketchup::Color.new(255, 0, 0)
face.material = [1.0, 0.0, 0.0]
face.material = [255, 0, 0]
face.material = 255
One thing that you will notice when you create and use a lot of different colors is that
SketchUp will have to add all of them to the already defined materials, which might take
some time. You can always review the result of your creation in the Materials window under
In Model by clicking on the house symbol (see Figure 6.10).
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