Edit materials from code

dacastror

Hello
I have a question
How I can edit a previously created materials? (from code)
and how I can change the display name?

Dan Rathbun

Access the material object, via the Materials collection.

Then change it's properties. (See the API dictionary for examples, on both.)

Dan Rathbun

I just tried changing the display name for a new file, opened with the Susan component.

Her trousers have material 'jean blue'

At the console:

mats = Sketchup.active_model.materials
#>> #<Sketchup;;Materials;0x656d2f8>
m = mats['jean blue']
#>> #<Sketchup;;Material;0x6525214>
m.name.inspect
#>> "jean blue"
m.display_name.inspect
#>> "jean blue"
m.name="bluejeans"
#>> "bluejeans"
m.display_name.inspect
#>> "bluejeans"

And I visually see in the Materials Inspector that the display_name has indeed changed.

dacastror

thank you very much, functioned to change the display name

I looked at the API dictionary do not understand,
could you give me an example?
such as changing the color of the material 'blue jean' to red

dacastror

I have understood

mats = Sketchup.active_model.materials m = mats['jean blue'] m.color=[180, 0, 0]

I am new to this,that good there are good people willing to help, thank you very much Dan

(I know very little English)

dacastror

I have another related question,

if I have a cube, each side painted a different color and then create a group or component, how I can access the list of materials the component or group to modify these materials from the code?

Would greatly appreciate a simple example of this, I could not find him anywhere

TIG

Any group [or a component-instance] can themselves have a 'material' - e.g. group.material if it's ' nil' then it has no material, however if it has a material any faces within the group that 'have no material' will display with that group's material [although they still have ' nil' material individually, they will display with the group's material].
The faces [and edges for that matter] inside a group.entities can have materials [ face.material] - or ' nil' if none.
Therefore, to find the materials used inside a group [or component definition found from its instance], make a collection of the group.entities faces and then iterate through those faces and collect each face.material, use .uniq! on that array, so you have only one of each; then iterate that array of materials and make a list of their 'names' etc etc...

thomthom

Note: Material.name is the internal ID name - while Material.diplay_name is what SU display in the material browser (exposes to the UI).
For instance, you cannot use Material.display_name as a key in the Model.materials collection - it will fail in some circumstances (for instance when the name is wrapped in [])

Read more: http://www.thomthom.net/thoughts/2012/03/the-secrets-of-sketchups-materials/

Dan Rathbun

Diego... see: Ruby Newbie's Guide to Getting Started

dacastror

wow, is more complicated than I expected, I doubt that achieves do with my current knowledge of the Ruby API, I guess I'll have to wait a while thank you very much Dan, Tig and Thomthom for guiding me

dacastror

this is what I have achieved so far

entidad = %(#FF8000)[Sketchup]%(#0040BF)[.active_model.selection][0] curretmaterial = entidad%(#0040BF)[.material] nameM = curretmaterial%(#0040BF)[.name] curretmaterial%(#0040BF)[.color]=[102, 0, 51] curretmaterial%(#0040BF)[.name]=%(#BF8080)["nuevo tono"]

I shall be able then apply the recommendations

(sorry for bad English)