Thank you for this information.

Mind you, I'm in no particular hurry to have this plugin up and running; I have a lot of modeling to finish first.

However, I desire the eventual script to do the following functions:

-Prompt for a specific rotation angle.
-Set the axes on specific lines in a model-specific group that can be manually moved and oriented around the model.
-Select all entities on certain model-specific layers.
-Then rotate the selection on the origin of the new axes position.

I appreciate the response. I'll see what I can't do from here on. (This plugin I'm working on will be a huge time saver if I can get it to work.)

I have this simple ruby script to rotate a selection of entities around the red axis by 45 degrees by pressing the up key:

class Rotationtest

  # perform rotate
  def rotate(angle)
    tr = Geom;;Transformation.rotation([0,0,0],[1,0,0],angle.degrees)
    Sketchup.active_model.active_entities.transform_entities(tr,Sketchup.active_model.selection)
  end

  # process upkey
  def onKeyDown(key, repeat, flags, view)
    case key
      when VK_UP then rotate(45)
    end
  end

end # class Rotationtest


if(not $rotatoiontest_menu_loaded)
  UI.menu("Plugins").add_item("ROTATION TEST") { Sketchup.active_model.select_tool Rotationtest.new }
end

$rotatoiontest_menu_loaded = true 

I want to replace the "press up key to rotate 45 degrees" function with an input prompt for a specific rotation angle when I select the plugin function from the menu.

How should I go about that?

I just had a small but satisfying breakthrough reverse-engineering some established ruby scripts to get the functionality I wanted.

I might just be able to finish this script I have in mind after all...

I want a ruby script that selects all entities on a specific layer, the rotates it on the axis origin after prompting for the specific angle.

Are there any samples of ruby scripts that can do anything like this that I can work from?

I appreciate any help.