Module-class

mariocha

HI, guys,
I need HELP!
I have written my first method (±70 lines) that works very well.
Now I want to wrap it in a module and a class.
(And later a start-operation & commit. And finally a begin-rescue...I guess)
But adding a - class Name -before everything and -end- as last line breaks it all.
I'm trying to find good readings about all this.
Meanwhile here are a few simple lines of it. They give me an "undefined method" error.
After all that work and studying for weeks, I am so disappointed that these few lines give me a headache !

Module.rb

TIG

You need to call the whole 'path' to the method:
McF3D::McF3DTools.new()
AND also add into the initialize() method [which is called by 'new']
[at the end]
perceOuv()

mariocha

@tig said:

You need to call the whole 'path' to the method:
McF3D::McF3DTools.new()
AND also add into the initialize() method [which is called by 'new']
[at the end]
perceOuv()

Many thanks for your answer,
Heu... but very sorry. Still too abstract for me.
Tried many ways to implement McF3D::McF3DTools.new(), but cannot figure out where it goes.
Every scripts I open for reference has a different way of about class.
very tired.

driven

I found and still find it confusing, so it good to create a really simple example...

try each separately or run all at once...

puts 'hi'

####################

def my_hi
  puts 'hi'
end
my_hi # call

####################

class My_Hi
	def my_hi3
		puts 'hi'
	end
end
My_Hi.new.my_hi3 # call

####################

module JcB
	class My_Hi
		def my_hi4
			puts 'hi'
		end # my_hi
	end # My_Hi
end # JcB
JcB;;My_Hi.new.my_hi4 # call

####################

module JcB
  def self.my_hi5
    puts 'hi'
  end # my_hi
end # JcB
JcB;;my_hi5 # call  or  JcB.my_hi5

and there are other variations on the theme...

john

MSP_Greg

Mario,

Glad that helped.

@mariocha said:

is the def Initialize a must ?

Technically, no. But, if there's no need for it, one might ask the question 'should this be a module?' The answer would vary amongst programmers, and isn't dependent on that single criteria.

[EDIT] I should add that when you create a class, it is a Ruby Class object, which has a :new method, which calls initialize if it exists. Just in case you were wondering...

Greg

SUMD SketchUp Misc Docs

mariocha

Hey, great ! Now I get it. (slapping my forehead)
Thanks a lot.
On to start_operation - commit now. update: that was an easy one.
Oh btw, is the def Initialize a must ?

MSP_Greg

Mario,

This might help (I reformatted your code a bit), see the last couple of lines --


# require 'sketchup.rb'   # why?  not needed for this code
module McF3D
  class McF3DTools 
    def initialize
      @mod = Sketchup.active_model  # Open model
      @ent = @mod.entities          # All entities in model
      @sel = @mod.selection         # Current selection
    end
    def perceOuv
      unless @sel[0].is_a?(Sketchup;;ComponentInstance) &&
          @sel[0].definition.behavior.cuts_opening?
        UI.messagebox "Sélectionnez un composant F3D !"
      end  
    end 
  end # class McF3DTools
end # module McF3D
obj = McF3D;;McF3DTools.new()
obj.perceOuv()

The topic of modules & classes in programming is very complex. Conversely, what most people writing a SketchUp extension need to do is a very small subset of that topic.

HTH,

Greg

SUMD SketchUp Misc Docs