Architectural_Design_with_SketchUp

Architectural Design with SketchUp
sel.each do |e|
# First check if this is a face
if e.typename == “Face”
# Then extrude it
e.pushpull rand(100)
end
end
This time, we are not adding anything to the Entities collection (which is why there is
no ent in the code). Instead, we are using what we have selected by employing Sketchup.
active_model.selection. As shown in Figure 6.12, the faces extruded randomly.
Figure 6.12: Randomly extruded faces
As evident in the code, sometimes it makes sense to check the type of entity you have
selected before you do anything to it (thereby preventing errors). This is done using the typename
method, and some possible entity types are Face, Edge, ConstructionPoint, ComponentInstance,
and Group.
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Using Formulas for Patterned Panels
Scripting geometry becomes especially effective (and beautiful) when we use a nonlinear
formula to define size, position, color, and so forth. The next piece of code creates a rectangular
grid of circles on the x-y plane (the ground) where the circle size is determined in two
directions by a sine function.