Soften-Edges using by ruby

baldaman

Oups, here is the code


def ss()
model=Sketchup.active_model
ss=model.selection
### You can assemble any collection of edges
### Here it's from the model's current selection
edges=[]
ss.to_a.each{|e|
   edges << e if e.class==Sketchup;;Edge
   e.entities.each{|ee|edges << ee if ee.class==Sketchup;;Edge}if e.class==Sketchup;;Group
}
edges.each{|edge|
ang=edge.faces[0].normal.angle_between(edge.faces[1].normal)
   if edge.faces[1]
     edge.soft=true if ang >= 45.degrees
     edge.smooth=true if ang >= 45.degrees
   end
}
end#def

TIG

The angle between adjacent faces on the cylinder's curve is 360/numsegs = 15 degrees for 24 segements so that is less than 45 degrees so they won't be smoothed !
I suspect you want to smooth edges that are NOT >= 45.degrees - so reverse the logic of the test to
edge.soft=true if ang < 45.degrees edge.smooth=true if ang < 45.degrees
and then 'sharp' edges will be kept 'solid' but edges with faces with similar normals will get smoothed
So a right-angle arris stays sharp and a nearly flat surface gets smoothed...

baldaman

... I am soooo stupid!
Thank you very much, it works perfectly.
Thank you very much master TIG

TIG

That's OK
I should have spotted the error in your logic earlier too

artmusicstudio

hello,
this piece of code is very helpful.
in my case this works:

SMOOTH LEFT

model=Sketchup.active_model
ss=group20.entities

You can assemble any collection of edges

Here it's from the model's current selection

edges=[]
ss.to_a.each{|e|
edges << e if e.class==Sketchup::Edge
e.entities.each{|ee|edges << ee if e.class==Sketchup::Edge}if e.class==Sketchup::Group
}
edges.each{|edge|
if edge.faces[1]
edge.soft=true
edge.smooth=true
end
}

BUT THIS ONE (smoothing with angle limit)
model=Sketchup.active_model
ss=group20.entities

You can assemble any collection of edges

Here it's from the model's current selection

edges=[]
ss.to_a.each{|e|
edges << e if e.class==Sketchup::Edge
e.entities.each{|ee|edges << ee if ee.class==Sketchup::Edge}if e.class==Sketchup::Group
}
edges.each{|edge|
ang=edge.faces[0].normal.angle_between(edge.faces[1].normal)
if edge.faces[1]
edge.soft=true if ang < 45.degrees
edge.smooth=true if ang < 45.degrees
end
}

is quit by following:

VAR. 0.1 k
load '01.rb'
Error: #<NoMethodError: undefined method normal' for nil:NilClass> C:/Program Files (x86)/Google/Google SketchUp 8/Plugins/01.rb:1516:in draw_stairs'
C:/Program Files (x86)/Google/Google SketchUp 8/Plugins/01.rb:1515:in each' C:/Program Files (x86)/Google/Google SketchUp 8/Plugins/01.rb:1515:in draw_stairs'
C:/Program Files (x86)/Google/Google SketchUp 8/Plugins/01.rb:973:in `each'

any idea about the "normal" problem?

thanx stan

TIG

Recast:

edges.each{|edge|
ang=edge.faces[0].normal.angle_between(edge.faces[1].normal)
if edge.faces[1]
  edge.soft=true if ang < 45.degrees
  edge.smooth=true if ang < 45.degrees
end
}

as

edges.each{|edge|
if edge.faces[1]
  ang=edge.faces[0].normal.angle_between(edge.faces[1].normal)
  edge.soft=true if ang < 45.degrees
  edge.smooth=true if ang < 45.degrees
end
}

because in YOUR version you are trying to get the normal of ALL edge's faces even if an edge doesn't have any faces ! Or if the face only has one face YOUR version fails when it can't find the normal of the non-existent second face !

artmusicstudio

YEAP!

smooth like a sup of tea with milk on a sunny afternon......

smoothing works perfect , thanx a lot ("again what learned", as we say here in bavaria)

lost a ot of time today with fighting again coordinate systems, whatever i do, the elements don't place themselves sometimes , where i expect them to, it seems, that within groups and components the time & space works different sometimes.....
stan

glro

@tig said:

@thomthom said:

@tig said:

Make an array of the selected edges [or of the edges within selected groups etc].
Iterate through those edges and test it they have >1 face.

The native soft+smooth tool doesn't soft+smooth any edges that is connected to more or less than 2 faces.

OK just adjust the code so that it's a edge.faces[1] and not edge.faces[2] test...***

To work on a group's edges


> ###... add this into the mix...
> groups=[]
> ss.to_a.each{|e|groups << e if e.class==Sketchup;;Group}
> groups.each{|group|
>   group.entities.to_a.each{|e|
>     if e.class==Sketchup;;Edge and e.faces.length==2 ###***
>       e.soft=true
>       e.smooth=true
>     end#if
>   }
> }
> ### ???
>

it works for groups, but not for components...
is it possible?

TIG

Assuming ss=Sketchup.active_model.selection...

defns=[]
ss.grep(Sketchup;;ComponentInstance).each{|e|defns << e.definition}
defns.uniq!
defns.each{|defn|
  defn.entities.grep(Sketchup;;Edge).each{|e|
    if e.faces.length==2
      e.soft=true
      e.smooth=true
    end
  }
}

or something similar...

glro

@tig said:

Assuming ss=Sketchup.active_model.selection...

defns=[]
> ss.grep(Sketchup;;ComponentInstance).each{|e|defns << e.definition}
> defns.uniq!
> defns.each{|defn|
>   defn.entities.grep(Sketchup;;Edge).each{|e|
>     if e.faces.length==2
>       e.soft=true
>       e.smooth=true
>     end
>   }
> }

or something similar...

yes...it works

this will save me time, since i noticed that some components edges come back visible in my models, for unknown reason...

now with just one clic, the problem is solved

thank you

TIG

The unexpected reversion of smoothed edges to solid is a known bug.
Never save when in a edit session. Even an auto-save can trigger this, so never stay inside an edit session for longer than you need to...