Global Layer Name Change

Bob James

Many thanks, TIG. I don't know anything about ruby language (that is, I don't know how to program in ruby), but I'll sure give it a try.

The real layer names are more like:

Aqua - Payload Vertical
Aqua - Payload Horizontal
Aqua - Tilt Fixture
Aqua - Simple Stand
etc......
Walls
Floor
Ceiling
etc......
Those with a prefix are unique to the current scenario: those without a prefix are "standard" for all scenarios.

So, if I understand your approach, I would first strip off the prefixes, then add the new one.

"txt1 = "Aqua -"; "txt2=""; layer.name=layer.name.gsub(txt1,txt2)]"
Would this strip the Aqua prefix and ignore those without that prefix?
How would I then change the prefix (to only those that had the Aqua prefix before) to "Jason"?
How would it deal with layers that did not have a prefix (or had some other prefix)?

Are there some ruby commands that would do something like (with txt_oldprefix and txt_newprefix being inputs):
txt_oldprefix = "Aqua"
txt_newprefix = "Jason"
LOld = Len(txt_oldprefix)
LName = Length(layer.name)
If (left(layer.name,LOld) = txt_oldprefix,then layer.name = txt_newprefix + right(layer_name,LName-LOld))

Maybe I'm just too dense and should continue going through each layer name and change it by cut and add. It's just such a bummer when there are twenty-something affected layers

TIG

### This changes all matching layer names
### You simply change the values of txt1="" and txt2="" to suit...
txt1="Aqua";txt2="Jason";Sketchup.active_model.layers.each{|layer|layer.name=layer.name.gsub(txt1,txt2)}
### paste the line of text "txt1=...txt2)}" into the Ruby console
### and then <enter> to make the changes...

This replaces [gsub] any 'Aqua - ' text with 'Jason - ' - thus all of the prefixes are changed and other layers are left alone... You are most unlikely to have the txt1 inside the rest of a layer's name so that is safe...

You Len and Left is 'basic' - ruby has other tools... if anything you are making things more complicated !

IF you wanted ALL layers to have the 'Jason' prefix then I recommend doing it in two steps - a bit like you suggest...
Step 1: ...txt1="Aqua - "; txt2=""... ###that will remove all of the prefixes.
Step 2: ...prefix="Jason - "...layer.name=prefix+layer.name... ###that will add the prefix to all layers...

Bob James

Thanks again, TIG.
I wasn't trying to make it more complicated: I used to program in Basic, Fortran IV and Algol (guess that dates me ) and, more recently, making macros in Excel and Access. It was the only way I knew how to try to communicate what I needed.

Again, thank you.

One, hopefully last, dumb guy question: do I make what you gave me into a ruby (Rename_layers.rb) and then type the other into the ruby console?

TIG

If you make a ruby script you'll need to make a definition and give it two arguments txt1 and txt2 etc... Easier is the the single line that can be copy/pasted into the Ruby Console + <enter> [with the txt1=/txt2= adjusted as desired]...

txt1="Aqua";txt2="Jason";Sketchup.active_model.layers.each{|layer|layer.name=layer.name.gsub(txt1,txt2)}

copy all of this line of code...

Bob James

Gave it a try. This is what I got:

txt1="3 Studio";txt2="3 Wood Room";Sketchup.active_model.layers.each{|layer|layer.name=layer.name.gsub(txt1,txt2)}
#Sketchup::Layers:0x206dd8d0

I don't know what that second line means, but the layer names were changed
I'm amazed that that simple command did the trick!

Thank you Ruby Master TIG

TIG

The #Sketchup::Layers:0x206dd8d0 is simply what is returned at the end of processing the model's layers. It's a pointer to the list of them... You could use

layers=Sketchup.active_model.layers

which sets 'layers' as a variable pointing at the model's layers list, you can then use 'layers' later on - e.g.

layers.each{|layer|puts layer.name}

which would print out each of the layers' names in turn in the Ruby Console [puts 123] You could then use layers again to do something else - like change some layers' names...

Chris Fullmer

Bob, you design SpacePorts?!?!??!?!!? ?!?!?!??!?!?!

Thats the coolest thing ever.

Chris

Bob James

This is getting REALLY interesting. My large models normally have over 100 layers. Attached is a partial listing for one model. Note the "0 - Small Payload" names: these were changed with your original name changer command - ENORMOUSLY HANDY.

In my original post I said:

@bob james said:

Or if I've developed a new model and want to re-organize the layers with prefixes.

This is true even for older models that are used as a basic model to which different user equipment is added.

You said
@tig said:

you can then use 'layers' later on - e.g.

layers.each{|layer|puts layer.name}

which would print out each of the layers' names in turn in the Ruby Console [puts 123] You could then use layers again to do something else - like change some layers' names...

I see what you said, but don't really know how to implement it.

Quite often it would be very handy to be able to re-organize the layer names into a better grouping (since there is no provision for sub-layers under a heading layer). In this case being able to have a list of the layers, change the names and then feed it back in. The "feed-back" would probably have to be in the same order as the original name list, but SU would then re-sort them into the new groupings. Is this kind of thing doable?

You can see some of the scenarios I've done at http://www.calspace.com at Processing Scenario - Small and Processing Scenario - Large

![About one-fourth of the layers list. Note the "0 - Small Payload" names: these were changed with your original name changer command - ENORMOUSLY HANDY](/uploads/imported_attachments/XbPH_Picture12.png "About one-fourth of the layers list. Note the "0 - Small Payload" names: these were changed with your original name changer command - ENORMOUSLY HANDY")

TIG

The list is in the order the layers were made. It would be possible to make a sorted list and put that into a text file - it it were any use to you...

However, probably the easiest way to rename stuff as you want is to make step by step changes to how the layers are prefixed. You can change prefix1 to another1 and the prefix2 to another2 etc etc. Just do the rename steps a few times till they are as you want... You just need to do a little bit of thinking about how you might want to rename and check that no steps will interfer with a previous one...

Bob James

Chris: Yeh, and SU makes it possible for an old duffer like me to do enormously interesting things

TIG: I tried your new commands and, as advertised, I received a list of the layer names in the Ruby Console. Interestingly, the order is not the same: I assume they are in the order that they were created (or something like that)?

Now what can I do with this with regard to changing names in SU?

The top part of the Ruby Console list

Bob James

Good to go.

Thanks for taking the time to mess with this small stuff, I certainly appreciate it.