I’m not really understanding why sometimes the faces are correct like picture 1 and sometimes they are not correct like picture 2. pic 1 [image] pic2 [image] example of the issue [example_problem] code SKETCHUP_CONSOLE.clear Sketchup.file_new # Default code, use or delete... mod = Sketchup.a…

@DanRathbun @dezmo I have created a solution that works using some code I found here and I also added some code in to elucidate what exactly it is that I am doing. I haven’t tried it yet on multiple faces but this solution should work for anyone where the bottom face is on a single plane. SKETCHUP…

[image] cwatts: face.reverse! unless face.normal.z == 1 Perhaps better as … face.reverse! unless face.normal == Z_AXIS If you wanted to test facing downwards … face.reverse! unless face.normal == Z_AXIS.reverse If you look at the API doc for the Toplevel namespace you’ll see the API defi…

[image] cwatts: The winding order of the vertices for the face being used for followme or the ones for the bottom face making up the edges that I am following? I mean that the direction of the normal (facing direction) will depend upon the order that you give when creating faces. And that yo…

I see what you are saying. But I am still getting the issue where the face that I am using for followme produces an inside out solid inconsistently.

With respect to followme, it may depend upon how the winding order / normal direction of the face relates to the follow path. Think of the first part of follow path as a directional vector. You’d want the face that follows the path to be facing in the opposite direction (I believe.)

Does it change spontaneously? I thought it depended upon the input for entities.add_face. If I input the face points the same every time shouldn’t it produce a consistent set of vertices.

[image] cwatts: Does it change spontaneously? I doubt it. See TIG’s words here … [image] Vertices of a Face (Ordered) Ruby API loops = faces.loops # all of the face’s loops oloop = face.outer_loop # outermost perimeter iloops = loops - [oloop] #other inner loops …

[image] cwatts: If I input the face points the same every time shouldn’t it produce a consistent set of vertices. I would seek to be consistent. But whenever you create something, check it’s validity. That it was actually created. Many API factory methods will return false and create nothin…

I’ve found that by doing that you sometimes create a new edge that nulls out part of the edges being followed. Example of issue [image] Relevant code # Default code, use or delete... mod = Sketchup.active_model # Open model ent = mod.entities # All entities in model sel = mod.selection # Current …

[image] cwatts: edges_to_follow = face.edges e1_dir = edges_to_follow[0].line[1] The face#edges method gives you the edges in random order. The face#outer_loop with loop#edges Get an array of the edges that define the loop in an ordered sequence. edges_to_follow = face.outer_loop.edges …

… yes and consistent also. :wink: @cwatts , I posted a link above where TIG shows using the #outer_loop method and explains the winding order.

Why am I inconsistently getting my outer faces going the right direction

Developers Ruby API

DanRathbun August 18, 2020, 12:09am 9

I doubt it.

See TIG’s words here …

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Why am I inconsistently getting my outer faces going the right direction

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