Retrieve Color Layer assigned by Sketchup

c.plassais

thank you TIG

I downloaded your plugin and I looked
It's for my little plugin http://forums.sketchucation.com/viewtopic.php?f=323&t=28957#p251619
I try to add a tool to draw lines with the color of the active layer

Probably the best solution is with the API SDK C + +, as indicated Thomthom.
I found in SDK, this method

OLE_COLOR ISkpLayer::Color [get] Returns the color associated with this layer.

but it is too complicated, Ruby and English is already a lot of work for me

TIG

@dan rathbun said:

I found [url][Plugin] List Layer Colors.rb[/url] (the topic title is a bit mis-spelled BTW.)
It creates a CSV file of Layers and their Colors. But I don't see it setting colors.
[Any further comments on the above plugin, I'll post in that topic.]
EDIT [ Maybe I missed the plugin you were refering to? ]
Nevermind.. I found it, it is a [Code] not a [Plugin].
It's here: [Code] layer-color= v1.2...

That's my code to 'set' a layer's color - it does NOT 'get' it - hence the layer.color**=** method.
There are several ways of using it layer.color="red" etc. It is terribly clunky, only works for colors [not textures] and would be much better as a built-in method...
There was talk of another layer.material method to get the layer's material [I recall it was AdamB's ?] but it hasn't arrived as far as I know... http://forums.sketchucation.com/viewtopic.php?f=180&t=25697&p=224534&hilit=layer#p224534

c.plassais

Thank you Dan

For your help and your time

even a csv list of color layers, it's good for me

c.plassais

and thank also TIG

for your plugin and your time
I use only color, no materials
layer.color one method is perfect for me
Not to change the color layer, just retrieve and use

TIG

This is the 'layer color' csv listing tool http://forums.sketchucation.com/viewtopic.php?p=11924#p11924
It needs Pro though...

Dan Rathbun

I found [Plugin] List Layer Colors.rb (the topic title is a bit mis-spelled BTW.)
It creates a CSV file of Layers and their Colors. But I don't see it setting colors.
[Any further comments on the above plugin, I'll post in that topic.]

EDIT [ Maybe I missed the plugin you were refering to? ]
Nevermind.. I found it, it is a [Code] not a [Plugin].
It's here: [Code] layer-color= v1.2

Jim's new indexes are great!!

Dan Rathbun

Woops! Messed up the url... updated my previous post.

c.plassais

ListLayerColors is perfect for me
must be an object layer to export the layer color

Thx TIG

Is it possible to use it in my plugin ?

TIG

@c.plassais said:

ListLayerColors is perfect for me
must be an object layer to export the layer color
Thx TIG
Is it possible to use it in my plugin ?

A layer needs to have been used [i.e. have at least one face on it] to export as an OBJ and thereby get the color listed, BUT you could simply make a grouped triangular face and give that face a layer - iterate through the model.layers adding the grouped faces until all layers are all done, then run your version of the tool and you have ALL layer colors including unused ones listed in the csv...
You can keep a tally of the temporary face-groups as you make them and then erase them as the OBJ export completes...
Feel free to use my code as you like: a brief mention of my original code/ideas would be kind; if you are to use it commercially then a small donation would be even kinder [if so, PM me about that]...

c.plassais

TIG,
I understand the tip to export all layers
My plugin is not commercial, freeware only on SCF and my French forum
A thousand times thank you

c.plassais

Hy,
TIG plugin ListLayerColors after some modifications, can create new colors in the pallet with layer's colors

require 'sketchup.rb'
###
class CreateLayerColors
def CreateLayerColors ;;get()
  model=Sketchup.active_model
  entities = model.active_entities    
  materials=model.materials
  layers=model.layers
  
  if model.rendering_options["DisplayColorByLayer"]==false
    model.rendering_options["DisplayColorByLayer"]=true
	already_on=false
  else
    already_on=true
  end#if
  # create temporary entities for exporting layers
  vecteur = Geom;;Vector3d.new 0,0,1
  centre = Geom;;Point3d.new 0,0,0
  group_temp=entities.add_group()
  entities = group_temp.entities
  x =0
  layers.each {|layer|
  model.active_layer = layer
  centre = [centre[0], centre[1], centre[2] + x]
  edges = entities.add_circle centre, vecteur, 0.01
  cercle = entities.add_face(edges)
  x= x + 0.01
  }
   
  model.save "temp"
  mpath = Sketchup.find_support_file "temp", "Plugins/"
  model.export(mpath +".obj",false)
  mtl=mpath+".mtl"
  text=IO.readlines(mtl)
 0.upto(text.length-1) do |i|
  if text[i]=~/^newmtl */
    name=text[i].slice(7..-2)### layer name only
    rgbR=((text[i+2].slice(3..11).to_f)*255).to_i.to_s### color rgb values	
    rgbG=((text[i+2].slice(12..20).to_f)*255).to_i.to_s### color rgb values	
    rgbB=((text[i+2].slice(21..29).to_f)*255).to_i.to_s### color rgb values
    
  	couleur_calque = Sketchup;;Color.new(rgbR.to_i, rgbG.to_i, rgbB.to_i)
        unless materials[name]
	    new_matiere = materials.add name
	    new_matiere.color = couleur_calque
	    new_matiere = new_matiere.name
	else
	    materials[name].color = couleur_calque
	end
  end#if
 end#upto

  File.delete(mpath+".obj")
  File.delete(mtl)
  File.delete(mpath)
  group_temp.erase!
  ###
  model.rendering_options["DisplayColorByLayer"]=false if already_on==false
  ###
end#def
end#class
### menu
# add menu items
if(not file_loaded?("CreateLayerColors.rb"))
  UI.menu("Plugins").add_item("Create Layer Colors"){CreateLayerColors;;get}
end#if
file_loaded("CreateLayerColors.rb")
###

CreateColorLayer

Christophe