Layer color by ruby-code?

[Andreas]

Is it possible to set the layer color by ruby-code?

[thomthom]

Annoyingly - no. It's one of the missing API methods. We can't get/set the layer material, nor can we set material name, erase materials or layers.

[Andreas]

I tried it with "layer-color=.rb"

  layer = model.layers.add "my_layer"
  layer.color = [255,255,255]

But there is the following error:
"undefined method `page_behavior=' for nil:NilClass"

Do you have an idea why the error occurs?

[TIG]

There is no built-in API layer.color=
BUT see here for my stop-gap new method... http://forums.sketchucation.com/viewtopic.php?p=177016#p177016
with that loaded your example layer.color= [255,255,255] should work...

[thomthom]

@tig said:

There is no built-in API layer.color=
BUT see here for my stop-gap new method... http://forums.sketchucation.com/viewtopic.php?p=177016#p177016
with that loaded your example layer.color= [255,255,255] should work...

See his last post...

[TIG]

It works OK for me...

[thomthom]

would help if we got the whole error - with the line number and traceback

[Andreas]

@tig said:

There is no built-in API layer.color=
BUT see here for my stop-gap new method... http://forums.sketchucation.com/viewtopic.php?p=177016#p177016
with that loaded your example layer.color= [255,255,255] should work...

I tried that. I copied "layer-color=.rb" to plugins folder.
And than there was the error when I start my code.
What is the mistake I made?

[thomthom]

what is the full error?
line of error, and traceback?

[TIG]

Have you restarted SUp after installing the new code script ?

[Andreas]

@tig said:

Have you restarted SUp after installing the new code script ?

Yes

[Andreas]

@thomthom said:

would help if we got the whole error - with the line number and traceback

The file "test.rb" is in plugins folder.
That´s the whole code of test.rb

  model = Sketchup.active_model
  layer = model.layers.add "ABS_Grundriss_Wand2"
  layer.color = [255,255,255]

The following error message appears if Sketchup start:
%(#FF0000)[Fehler beim Laden der Datei test.rb
undefined method `page_behavior=' for nil:NilClass]

That error appears in context with "layer-color=.rb" which is in
plugins folder too. If I remove "layer-color=.rb" from plugins folder
there is the following error message:
%(#FF0000)[Fehler beim Laden der Datei test.rb
undefined method `color=' for #Sketchup::Layer:0x6dfe1ec]

That error I understand.

[thomthom]

But there should be a traceback.

If you have a file like this:

def test_me
  x == y
end

and then call that method you should get this error:
Error: #<NameError: undefined local variable or methodx' for main:Object>
C:/Program Files (x86)/Google/Google SketchUp 8/Plugins/testme.rb:2
(eval):2537`

Notice it includes the filename and line number after reporting the error. Do you not get that kind of error?

[thomthom]

I see an issue with this method:

It has multiple .start_operation and commit_operation inside the code flow - which will interfere with any start_operation you started yourself - since SU doesn't handle nested start_operations:

` model.start_operation

...

layer.color = 'red' # this breaks the undo stack

...

model.commit_operation`

Though, it is not related to the error you got.

[Andreas]

@thomthom said:

But there should be a traceback.

If you have a file like this:

> def test_me
>   x == y
> end
> 

and then call that method you should get this error:
Error: #<NameError: undefined local variable or methodx' for main:Object>
C:/Program Files (x86)/Google/Google SketchUp 8/Plugins/testme.rb:2
(eval):2537`

Notice it includes the filename and line number after reporting the error. Do you not get that kind of error?

The first way I test was run automatically at the Sketchup start.
There was only the error message I posted.

[Andreas]

@thomthom said:

I see an issue with this method:

It has multiple .start_operation and commit_operation inside the code flow - which will interfere with any start_operation you started yourself - since SU doesn't handle nested start_operations:

` model.start_operation

...

layer.color = 'red' # this breaks the undo stack

...

model.commit_operation`

Though, it is not related to the error you got.

Sorry, I don´t understand that.

I tried now that:

def layer_color
  model = Sketchup.active_model
  layer = model.layers.add "Test_Layer"
  layer.color = [255,255,255]

end

if( not file_loaded?("test.rb") )
  plugins_menu = UI.menu("Plugins")
	plugins_menu.add_item("LayerColor") {layer_color}
end

#-----------------------------------------------------------------------------
file_loaded("test.rb")

That works without error - but the new layer has the color 102,68,0
and not 255,255,255!!!???

I test that:

def layer_color
  model = Sketchup.active_model
  layer = model.layers.add "Test_Layer"
  layer.color = "Blue"

end

if( not file_loaded?("test.rb") )
  plugins_menu = UI.menu("Plugins")
	plugins_menu.add_item("LayerColor") {layer_color}
end

#-----------------------------------------------------------------------------
file_loaded("test.rb")

The same result like before - Color 102,68,0 instead of blue

Than I test that:

def layer_color
  model = Sketchup.active_model

  my_mat = materials.add "Ahorn"
  my_mat.texture = "O;\\Sketchup\\Mat\\Ahorn.jpg"

  layer = model.layers.add "Test_Layer"

  layer.color = my_mat

end

if( not file_loaded?("test.rb") )
  plugins_menu = UI.menu("Plugins")
	plugins_menu.add_item("LayerColor") {layer_color}
end

#-----------------------------------------------------------------------------
file_loaded("test.rb")

There was no error but also no layer!!