Problem of control of the vertices

[sWilliams]

Using Edge.curve will give you unexpected results in many situations. It is better to iterate through the edges returned from Entities.add_arc and collect the unique vertices. Like so:

    mod = Sketchup.active_model # Open model
    ents = mod.entities # All entities in model

    r = 10
    c = Geom::Point3d.new(20,20,0)
    start_a = 270.degrees
    end_a = 180.degrees

    edgearray = ents.add_arc( c, X_AXIS, Z_AXIS, r, start_a, end_a, 5)

    pt2 = 10,10,0
    ents.add_face(edgearray.collect{|e|e.vertices}.flatten.uniq << pt2)

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Creating a face with arcs and lines

Normally I use the add_face method to create a face and looking at the documentation I should be able to use the same method where I have a number of points along with a couple arcs that will define the geometry of the face. The funny thing is I have never run into this before, I’ve only had to deal with polygon faces (only straight segments) or circles. Does anyone have an example of creating a face with the add_face method that involves straight segments (ie. points) and arc(s)?