Loop returns non-planar vertices?
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face.outer_loop.verticesI got an very unexpected error on this line in one of my scripts:
Error: #<ArgumentError: Points are not planar>
How is that possible?
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It's not possible!
However if the accuracy that is used to allow vertices to have one face and the accuracy used to test for planarity are different then it is possible to get an error.
If you take your 'non-planar' vertices and use their points to make a face is it successful? or is this where the error arises??
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@tig said:
It's not possible!
That's what I was thinking - but yet it happens. The error points to my line which is:
g.entities.add_face( face.outer_loop.vertices )And it makes no difference if I convert the vertices to points first.... x_X
I'll try to find which face is doing this. Maybe it's a face that's very small, or very thin which throws off SU's calculations...
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@thomthom said:
@tig said:
It's not possible!
That's what I was thinking - but yet it happens. The error points to my line which is:
g.entities.add_face( face.outer_loop.vertices )
And it makes no difference if I convert the vertices to points first.... x_X
I'll try to find which face is doing this. Maybe it's a face that's very small, or very thin which throws off SU's calculations...Can you pass an array of vertices to
entities.add_face()?
The API says* entities.add_face(edge1, edge2, edge3, ...) * entities.add_face(edge_array) * entities.add_face(pt1, pt2, pt3, ...) * entities.add_face([pt1, pt2, pt3,...]) * entities.add_face(curve)
BUT no mention of vertices ? As converting them to a points_array first doesn't work anyway...then it's just weird
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Yea - the API doesn't mention a lot of things. Most method that accepts Point3d object also accept Vertex objects. (And it is quicker to skip the conversion of vertices to point3d if you can)
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@thomthom said:
Yea - the API doesn't mention a lot of things. Most method that accepts Point3d object also accept Vertex objects. (And it is quicker to skip the conversion of vertices to point3d if you can)
Good to know...
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What cute tiny face! 0m2
COPLANAR ERROR [#<Sketchup::Vertex:0xc4a7d68>, #<Sketchup::Vertex:0xc4a7d04>, #<Sketchup::Vertex:0xc4a7cf0>] [Point3d(5433.47, 5026.38, 0), Point3d(5433.46, 5026.38, 0), Point3d(5433.47, 5026.38, 0)] Error: #<ArgumentError: Points are not planar> -
Can you trap it by getting
face.loop.edgesandif edge.length < ????then you transform oneedge.vertices[0]position to beedge.vertices[1]position... so the very short edge 'heals up' - your face then 'disappears' if its a triangle! -
Please do not enclose your text in the "Flash" tags (that will not make your text flash or blink...). Please do not type in all caps. But please do keep asking questions. We're a pretty helpful group of people. Thanks!
Chris
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I think you can also get the non-planar message when points are co-linear (which is a sub-set of being co-planar?)
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@unknownuser said:
Ooopps sorry chris! I will keep asking- thanks for letting me know.
Not a problem, thanks for working with us!
As for wondering if the problem has been solved yet, it looks like they are still actively working on solving it. Its been a busy topic this morning.
Chris
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@unknownuser said:
EXCUSE ME: DID ANYONE FIGURE THIS OUT YET?
Yet? This topic started two and a half hour ago...
@unknownuser said:
PLEASE I ALSO HAVE THIS PROBLEM. IT IS HARD TO UNDERSTAND. PLEASE LET ME KNOW I NEED TO FIX IT TOO. THANK YOU.
The cause: http://forums.sketchucation.com/posting.php?mode=quote&f=180&p=303852#pr303848
The face I got the vertices from was very small. SU has problems then.
Do you have the same scenario? Are you trying to build a face from the loop vertices of another face? Or do you have another set of 3d points? Maybe your issue isn't source in the same issue as mine. -
Phone a friend?
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Hi Scott, the question you have is a bit different than the one being discussed here. You might just start a new topic asking the whole group your question - which seems to be specifically "How do I make a wing surface from a list of 3d points" or something along those lines. Your question is a bit burried here in this topic, and you will probably get more eyes seeing your dilema if you just made your own topic. Do you have any programming experience? Not that it matters, you can always learn, I just thought I'd ask.
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