How to put outer edges of a face in an array?

Developers Ruby API
1

Dear Friends,

Can anyone help me to put outer edges of a face in an array?

Thank you for your help in advance…

2

Face.#outer_loop-instance_method

Loop#edges-instance_method

# Create a series of points that define a new face.
model = Sketchup.active_model
entities = model.active_entities
pts = []
pts[0] = [0, 0, 0]
pts[1] = [9, 0, 0]
pts[2] = [9, 9, 0]
pts[3] = [0, 9, 0]

# Add the face to the entities in the model
face = entities.add_face(pts)
o_loop = face.outer_loop

# This o_edges - an array of Edge objects:
o_edges = o_loop.edges
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3

How can I change o_edges to simple three-element arrays?

4 
o_points = o_edges.vertices.map(&:position)
o_xyz_arrays = points.map(&:to_a)

BUT … getting the vertices array from edges means there’ll be 2 copies of each vertex, and they may not be in correct “winding order”.

So you should get the vertices from the Sketchup::Loop object.

Ie …

o_points = o_loop.vertices.map(&:position)
o_xyz_arrays = o_points.map(&:to_a)

Why use XYZ arrays when you can use Geom::Point3d objects ?
They have nice methods to do good things, and you can get the individual coordinates via the x(), y() and z() methods.

5

Thank you so much for your help. Your codes works well and solved my problem. Unfortunately I am biginner in ruby and working with edges is difficult for me.

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