ExtrudeEdgesbyRailsbyFace Study
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WOW! thats a lot to grasp.
maybe you could study TIGs other extrude tools too. it would be nice to know how they all work 
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So Simon before TIG answer put all in the positive X Y Z quadran
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Ah! Great -- this is the thing that is needed! Raw material for a manual...
Best,
Jason. -
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Family illness miles away from home means I can't pay full attention right now...
However, the profile-face's orientation [as explained in the notes] is taken from its 'flat' Y/green axis which is taken as Z/vertical when it's copied and 'transposed' onto the end of a rail.
The face is also 'transformed' onto the nearest end of any rail curve.
Perhaps using one face and one rail will give you simpler examples - use EEbyFace... This is 'method' used in EEbyRailsByFace so the results should be the same - the more complex EEbyRailsByFace assumes you understand the basic rules applying to EEbyFace...
Also the built-in FollowMe that's used can 'twist' the profile, so you need to factor that in...
That might explain why the face isn't at the slope' angle but perpendicular to the first segment in the rail's curve ?
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Now I am sure any more of nothing but:
WARNING:
Re:@unknownuser said:
Extrude Edges by Rails by Face":2chior74]The path ends nearest to the face will be used, so asymmetrical faces
should be placed nearest to the side requiring that orientation.May be the best is to always operate with the same arrangement.
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thank you xrok1, Pilou, Jason.
@unknownuser said:
Extrude Edges by Rails by Face":sih1xuny]A copy of the Face is added to each Rib's Path end, rotated so that
its normal is parallel to the vector of the first edge in each Path.
(5)The PIVOT is the nearest edge or the nearest Point of the face from the red axis, rotating around red axis
(sorry for my english)
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Rectification: I'm wrong about these "expected" 30°. Measuring isn't done the good way.@unknownuser said:
and TIG is going to write:
Also the built-in FollowMe that's used can 'twist' the profile, so you need to factor that in...
That might explain why the face isn't at the slope' angle but perpendicular to the first segment in the rail's curve ?I can "see" the behavior for Rails Shape but I can't express it by theory! (help for that dear TIG!)
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@ Simon
If you want some crazzy structures take a look to Topmod (it's free) 
A true gem! You can Load / Save as OBJ
My Topmod gallery
(2pages) -
You are an artist dear Pilou
++s
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Dear TIG,
I wish a strength health for your family.Thank you for attention and to your explanation guides. -> Quotes and rectifications added in consequence here and there.
@unknownuser said:
Also the built-in FollowMe that's used can 'twist' the profile, so you need to factor that in...
Two observations:
[Plugin] Extrude Edges by Faces
Re:for me, icons number 2 and 3 are affected to the same "extrude edges by face"
@unknownuser said:
use EEbyFace...
A good idea. This shows me I was wrong to think until now that profiles and rails was treated differently
Playtime: Cubic chocolate cage
*s
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