[Plugin] Boolean helper update 08122011

liquid98

Hi TIG, I did some experiments today,

I understand what you mean about the transformation. Using 1.0/nnnn and nnnn is just more convenient..

Setting a global variable was easy. And worked right away. But I also read some wiki that said : "avoid global variables!! ". Is that why you give it ($liquidsscalefactor)such a long name?

Getting a variable from input: also easy.

But to get my variable lsf in to the two classes Kleiner
and Groter, is something I don't understand.
My input method is like this:

` class Getinfo

def initialize() 

	prompts = ["Enter scalefactor   "]
	values = [1000]
	
	results = UI.inputbox prompts, values, "Scalefactor."
	return if not results
	@lsf, = results
	
	UI.messagebox @lsf.class

end

end`

@lsf in Getinfo is a Fixnum class, is that alright?
But in my two classes @lsf is NilClass (empty)

I tried also $lsf and @@lsf.

Any help???

I attached the file I'm working on..

PS:TIG, Realy cool you put all that effort in helping people with ruby and Sketchup! I'm sure lots of people can learn from your posts!

booleanhelper_unf.rb

TIG

For a @@ variable to be accessible it has to be within the same 'class' - you have set three separate classes so @@ won't work between them - you need a $ global version...

Because it's a global variable I suggested a 'long name' that's highly likely to be used by anyone else and cause unexpected conflicts...

To make a variable that's remembered during that Sketchup session across the classes, you set it in the module using the '$' type... E.G.
$liquidsscalefactor=1000.0
written within the 'module' BUT outside the class/def's, I.E. as you have done, BUT you need to remove the '#'
Note also how I've set it as a 'float' rather than an 'integer' by adding '.0' to the end - it's safer when doing division etc as 1/100 >>> 0 but 1/100.0 >>> 0.01
This sets the value of the scaling for that Sketchup session and it is remembered across uses of the three tools.
You then need to change the dialog part to [re]set it thus...
values = [$liquidsscalefactor]
and then later...
$liquidsscalefactor, = results
OR alternatively you could write it as...
$liquidsscalefactor = results[0]

Whenever you open Sketchup it starts at 1000, but any new value is remembered thereafter.
The 1000 value is reverted after a close and reopen of Sketchup.
You CAN save the value permanently so that it is always remembered between sessions using Sketchup.write_default/read_default etc... but that's for another day once you get this method working

liquid98

Hi TIG,

implemented the global variable, works great!

I see: the @@variable is only valid within a class right?

Questions

Is results[0] an element of an array? Are all these results of the inputbox stored during the session?

$booleanhelperscalefactor, = results , if I omit the , $booleanhelperscalefactor becomes an array, why?

To give extra info about the scale-factor I adapted the code like this:

cmd = UI::Command.new("Scale factor "+$booleanhelperscalefactor.to_s) {Bhelper::Groter.new() } cmd.small_icon = File.join(imgdir, "bigger.png") cmd.large_icon = File.join(imgdir, "biggerL.png") cmd.tooltip = ("Scale factor "+$booleanhelperscalefactor.to_s) cmd.menu_text = ("Scale factor "+$booleanhelperscalefactor.to_s)

The text sticks to the initial value of $booleanhelperscalefactor, when i change the scalefactor in sketchup the tooltip and menu-tekst won't change.

Thnx for your help.

By the way, I found the Automatic_SketchUp pdf document, a good resource!

TIG

'results' IS returned as an array - that's why
you can get the contents of an array in several ways
array=[0,1,2,3]
a,b,c,d = array
a

0
b
1
etc
OR as
a=array[0]
a
0
IF you have a ONE element array like yours
xxx = results[0]
is exactly the same as
xxx, = results
as xxx is set the the first [0] element in both cases...

The cmd tooltip is set at the moment the the cmd is defined - so it shows the then current scalefactor.
When you change the scale factor you don't change the then defined details.
You COULD set the cmd as a $ variable so you know its 'handle' - use an unusual reference - say $cmdbooleanhelperscalefactor - When you change the scalefactor in the dialog also add a lie saying
$cmdbooleanhelperscalefactor.tooltip = ("Scale factor "+$booleanhelperscalefactor.to_s)
Not sure it'll work BUT you can see how it might be construed......

liquid98

Hi TIG!

I learned a lot today; and

I got it all working!!!!

Thanx a lot for your help!

I have two final questions though:

(1)
sfa = Sketchup.read_default('liquidsscalefactor','value') sff = sfa[0].to_f . . . trans = Geom::Transformation.scaling(ORIGIN, 1.0/sff)

Is there a more elegant solution to convert sfa to a floating value?

(2)
And I don't understand why sftt is not updating when the scalefactor (sfa) is set??
sfa = Sketchup.read_default('liquidsscalefactor','value') sftt = sfa[0].to_f . . . cmd.menu_text = ("Scale down with factor #{sftt}")

TIG

Little more elegant way...
I would add the optional third part to the read_default as '0'
Then sff=1000.0 if sff==0.0
I don't see any ' write_default' code ?
When the dialog changes the sf value the ' liquidsscalefactor' needs to be [re]written...

liquid98

Hi TIG,

@unknownuser said:

I don't see any 'write_default' code ?

My complete code is now attached in the rb-file below....

Am I right? It has to be:

sfa = Sketchup.read_default('liquidsscalefactor','value', 0) sff = sfa[0].to_f

Instead of that I was looking for a more elegant solution like:

sfa = Sketchup.read_default('liquidsscalefactor','value', 0).to_f

but that's not possible?

TIG, Thnx for your help once again, I lost count already

booleanhelperunf1

TIG

Your
sfa = Sketchup.read_default('liquidsscalefactor', 'value', 0).to_f
will work without intermediate steps... although I'd set the fall-back option to '0'.

liquid98

@tig said:

Your
sfa = Sketchup.read_default('liquidsscalefactor', 'value', 0).to_f
will work without intermediate steps... although I'd set the fall-back option to '0'.

I got it working like this:

sf = (Sketchup.read_default 'liquidsscalefactor', 'value', '0')[0].to_f

final code in first post. Thnx!

TIG

Should NOT need the [] - the returned value should be a string ''

ken

Downloaded the latest version. Here what is happening.

If you don't put a value to the scale, the model disappears.
The model does not stay at it's present locations like the previous version did.

Ken

TIG

The scale should default to 1000 if it's not set, or to another value if it has been set before...

liquid98

Hi Ken, you were right! Thanx for the feedback

Solved both problems,

It's only possible to enter a number > 0

You now can choose between scale about origin or scale about object's center.
The default is to scale about the object's center. If you want to change that, open the ruby-file and uncomment
(remove the #) the first line of code. Please reboot ruby to make it work.

Latest version in topic-start

liquid98

Hi TIG,

Would you be so kind to inspect my code briefly to see if there are things that could be done in a better way or are
actually wrong but function by accident?? (code in first topic)

And a question

The script accepts only input if its a number > 0 It accepts for instance numbers like 1.90.
But it also accepts numbers like 1,90. Nothing happens then when you
try to use it.
How can I filter this kind of input?

I other words, how do I program this:


@@x = 1,90
If x contains  ','
do something

?

Thank you

TIG

Try these tweaks
module Bhelper sf = **'1000.0'**
To make it a 'string'.
Then
@@sf = Sketchup.read_default('liquidsscalefactor','value'**,'1000.0'**)**.to_f**
to trap for it not having set [should never happen!] and .to_f to turn the read string into a 'float'.
You don't need
@@sf = results.to_s.to_f
as it's now already a float, and should be got thus from the input @@sf=results[0]
@@sf = results is wrong/duplicated AND also
Sketchup.write_default('liquidsscalefactor','value',@@sf**.to_s**)
should be inside the 'begin' section, otherwise it 'fires' even after an error.

In your two similar classes
def initialize() sf = (Sketchup.read_default 'liquidsscalefactor', 'value', '0')[0].to_f
should both become
def initialize() sf = (Sketchup.read_default 'liquidsscalefactor', 'value', '1000.0')**.to_f**

ken

Well I tried again. This time I get the error code "NilClass"

Ken

TIG

Ken

Please bear with him...
This is his first Ruby and whilst it is a good idea it needs some 'fine tuning'

ken

@tig said:

Ken

Please bear with him...
This is his first Ruby and whilst it is a good idea it needs some 'fine tuning'

Hello TIG

I was, I waited and no one else seemed to have this problem. I am not in a hurry just trying to get to him info. He is a lot further along in Ruby than I am.

Ken

liquid98

HI Ken and TIG,

Thanx for your feedback, I really enjoy learning to code with your help!

I decided to change the approach of Booleanhelper a bit. In the latest version (1.04) its only possible to scale with factor 10, 100, or 1000. You can choose a value from a dropdown-menu.
I've done this because the plugin is only needed to temporary scale up and down a model.
If you work on a scaled up model for instance with scale 100 you can adapt your measurements easily.
In other words, it makes no sense to scale up and down with a factor of eg 9,81.

@TIG Here is the code of version 1.04. I managed to integrate the scalefactor in the tooltip of the toolbar icons, but the method I used for the tooltips is not working for the menu-items, unfortunately.
Further I put this piece of code in the Getinfo class. As a result the tooltips only update after setting the scalefactor. My idea was to put the code for the tooltip outside the classes, but to no avail;

<span class="syntaxdefault">require </span><span class="syntaxstring">'sketchup.rb'<br /><br /></span><span class="syntaxcomment">#=============================================================================<br /></span><span class="syntaxdefault">    <br />    <br />       </span><span class="syntaxcomment">#$booleanhelper_scaleoption = 1         # Uncomment the first line of code to scale your object about the origin. ( Restart needed!)<br /></span><span class="syntaxdefault">    <br />    </span><span class="syntaxcomment"># Leave it as it is to scale your object about it's center.<br /></span><span class="syntaxdefault">    <br /><br /><br /><br /><br /><br /><br />module Bhelper<br /><br />   sf </span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> 100<br />        if     Sketchup</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">read_default</span><span class="syntaxkeyword">(</span><span class="syntaxstring">'liquidsscalefactor'</span><span class="syntaxkeyword">,</span><span class="syntaxstring">'value'</span><span class="syntaxkeyword">)</span><span class="syntaxdefault"> </span><span class="syntaxkeyword">==</span><span class="syntaxdefault"> nil<br />        <br />            Sketchup</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">write_default</span><span class="syntaxkeyword">(</span><span class="syntaxstring">'liquidsscalefactor'</span><span class="syntaxkeyword">,</span><span class="syntaxstring">'value'</span><span class="syntaxkeyword">,</span><span class="syntaxdefault">sf</span><span class="syntaxkeyword">)<br /></span><span class="syntaxdefault">        <br />        end    <br />    <br /><br />    <br />class Getinfo<br />    <br />    def initialize</span><span class="syntaxkeyword">()</span><span class="syntaxdefault"> <br />        <br />        <br /><br />        </span><span class="syntaxkeyword">@@</span><span class="syntaxdefault">sf </span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> Sketchup</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">read_default</span><span class="syntaxkeyword">(</span><span class="syntaxstring">'liquidsscalefactor'</span><span class="syntaxkeyword">,</span><span class="syntaxstring">'value'</span><span class="syntaxkeyword">)<br /></span><span class="syntaxdefault">        <br />        prompts </span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> </span><span class="syntaxkeyword">[</span><span class="syntaxstring">"Set scalefactor   "</span><span class="syntaxkeyword">]<br /></span><span class="syntaxdefault">        <br />        defaults </span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> </span><span class="syntaxkeyword">[@@</span><span class="syntaxdefault">sf</span><span class="syntaxkeyword">]<br /></span><span class="syntaxdefault">        values </span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> </span><span class="syntaxkeyword">[</span><span class="syntaxstring">"10|100|1000"</span><span class="syntaxkeyword">]</span><span class="syntaxdefault">  </span><span class="syntaxcomment"># For other scale factors please use the native Sketchup-scale tool . This script is intended only for quick scale up and down actions .<br /><br /></span><span class="syntaxdefault">        <br />         results </span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> UI</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">inputbox prompts</span><span class="syntaxkeyword">,</span><span class="syntaxdefault"> defaults</span><span class="syntaxkeyword">,</span><span class="syntaxdefault"> values</span><span class="syntaxkeyword">,</span><span class="syntaxdefault"> </span><span class="syntaxstring">"Scalefactor."<br /></span><span class="syntaxdefault">        <br />        return if not results<br /><br />    <br />    <br />    </span><span class="syntaxkeyword">@@</span><span class="syntaxdefault">sf </span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> results</span><span class="syntaxkeyword">[</span><span class="syntaxdefault">0</span><span class="syntaxkeyword">]<br /></span><span class="syntaxdefault">    <br />      <br />    $cmdbooleanhelperscale</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">tooltip </span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> </span><span class="syntaxkeyword">(</span><span class="syntaxstring">"Scalefactor#{@@sf}"</span><span class="syntaxkeyword">)</span><span class="syntaxdefault"> <br />    $cmdbooleanhelperscale1</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">tooltip </span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> </span><span class="syntaxkeyword">(</span><span class="syntaxstring">"Scalefactor#{@@sf}"</span><span class="syntaxkeyword">)</span><span class="syntaxdefault"> <br />    <br />    <br />    <br />    <br />    <br />    <br />    <br />    <br />        Sketchup</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">write_default</span><span class="syntaxkeyword">(</span><span class="syntaxstring">'liquidsscalefactor'</span><span class="syntaxkeyword">,</span><span class="syntaxstring">'value'</span><span class="syntaxkeyword">,@@</span><span class="syntaxdefault">sf</span><span class="syntaxkeyword">)<br /></span><span class="syntaxdefault">        <br />        <br />        <br />        <br />    end<br /><br />end<br /><br /><br />    <br /><br /><br />class Kleiner<br />    <br />    def initialize</span><span class="syntaxkeyword">()</span><span class="syntaxdefault"> <br />    sf </span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> </span><span class="syntaxkeyword">(</span><span class="syntaxdefault">Sketchup</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">read_default </span><span class="syntaxstring">'liquidsscalefactor'</span><span class="syntaxkeyword">,</span><span class="syntaxdefault"> </span><span class="syntaxstring">'value'</span><span class="syntaxkeyword">,</span><span class="syntaxdefault"> </span><span class="syntaxstring">'100'</span><span class="syntaxkeyword">).</span><span class="syntaxdefault">to_f<br />    <br />    model </span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> Sketchup</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">active_model<br />    entities </span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> model</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">active_entities<br />        selection </span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> model</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">selection<br />    <br />    boundbox </span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> Sketchup</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">active_model</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">bounds<br />    center</span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> boundbox</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">center<br /><br />    <br />    if $booleanhelper_scaleoption  </span><span class="syntaxkeyword">==</span><span class="syntaxdefault"> 1<br />    <br />    center </span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> </span><span class="syntaxkeyword">[</span><span class="syntaxdefault">0</span><span class="syntaxkeyword">,</span><span class="syntaxdefault"> 0</span><span class="syntaxkeyword">,</span><span class="syntaxdefault"> 0</span><span class="syntaxkeyword">]<br /></span><span class="syntaxdefault">    <br />    <br />    end <br />    <br />    trans </span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> Geom</span><span class="syntaxkeyword">;;</span><span class="syntaxdefault">Transformation</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">scaling</span><span class="syntaxkeyword">(</span><span class="syntaxdefault">center</span><span class="syntaxkeyword">,</span><span class="syntaxdefault"> 1.0</span><span class="syntaxkeyword">/</span><span class="syntaxdefault">sf</span><span class="syntaxkeyword">)<br /></span><span class="syntaxdefault">    entities</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">transform_entities</span><span class="syntaxkeyword">(</span><span class="syntaxdefault">trans</span><span class="syntaxkeyword">,</span><span class="syntaxdefault"> selection</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">to_a</span><span class="syntaxkeyword">)<br /></span><span class="syntaxdefault">    <br />    </span><span class="syntaxcomment">#new_view = view.zoom_extents<br /></span><span class="syntaxdefault">    <br />    end<br />end<br /><br /><br /><br /><br /><br />class Groter<br />    <br />    def initialize</span><span class="syntaxkeyword">()</span><span class="syntaxdefault"> <br />    sf </span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> </span><span class="syntaxkeyword">(</span><span class="syntaxdefault">Sketchup</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">read_default </span><span class="syntaxstring">'liquidsscalefactor'</span><span class="syntaxkeyword">,</span><span class="syntaxdefault"> </span><span class="syntaxstring">'value'</span><span class="syntaxkeyword">,</span><span class="syntaxdefault"> </span><span class="syntaxstring">'100'</span><span class="syntaxkeyword">).</span><span class="syntaxdefault">to_f<br />    <br />    model </span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> Sketchup</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">active_model<br />    entities</span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> model</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">active_entities<br />        selection </span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> model</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">selection<br />    <br />    <br />    <br />    boundbox </span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> Sketchup</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">active_model</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">bounds<br />    center</span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> boundbox</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">center<br />    <br />    <br />    if $booleanhelper_scaleoption  </span><span class="syntaxkeyword">==</span><span class="syntaxdefault"> 1<br />    <br />    center </span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> </span><span class="syntaxkeyword">[</span><span class="syntaxdefault">0</span><span class="syntaxkeyword">,</span><span class="syntaxdefault"> 0</span><span class="syntaxkeyword">,</span><span class="syntaxdefault"> 0</span><span class="syntaxkeyword">]<br /></span><span class="syntaxdefault">    <br />    <br />    <br />    end<br /><br />    trans </span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> Geom</span><span class="syntaxkeyword">;;</span><span class="syntaxdefault">Transformation</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">scaling</span><span class="syntaxkeyword">(</span><span class="syntaxdefault">center</span><span class="syntaxkeyword">,</span><span class="syntaxdefault"> sf</span><span class="syntaxkeyword">)<br /></span><span class="syntaxdefault">        entities</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">transform_entities</span><span class="syntaxkeyword">(</span><span class="syntaxdefault">trans</span><span class="syntaxkeyword">,</span><span class="syntaxdefault"> selection</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">to_a</span><span class="syntaxkeyword">)<br /></span><span class="syntaxdefault">    <br />    </span><span class="syntaxcomment">#new_view = view.zoom_extents<br /></span><span class="syntaxdefault">    <br />    end<br />end<br /><br /><br /> <br /> <br /> <br /> <br /><br /></span><span class="syntaxcomment">#=============================================================================<br /></span><span class="syntaxkeyword">if(</span><span class="syntaxdefault"> not $booleanhelper_menu_loaded </span><span class="syntaxkeyword">)<br /><br /></span><span class="syntaxdefault"> <br />    add_separator_to_menu</span><span class="syntaxkeyword">(</span><span class="syntaxstring">"Plugins"</span><span class="syntaxkeyword">)<br /></span><span class="syntaxdefault">        new_menu </span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> UI</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">menu</span><span class="syntaxkeyword">(</span><span class="syntaxstring">"Plugins"</span><span class="syntaxkeyword">).</span><span class="syntaxdefault">add_submenu</span><span class="syntaxkeyword">(</span><span class="syntaxstring">"Boolean helper"</span><span class="syntaxkeyword">)<br /></span><span class="syntaxdefault">        new_toolbar </span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> UI</span><span class="syntaxkeyword">;;</span><span class="syntaxdefault">Toolbar</span><span class="syntaxkeyword">.new(</span><span class="syntaxstring">"Boolean helper"</span><span class="syntaxkeyword">)<br /></span><span class="syntaxdefault">        plugins </span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> Sketchup</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">find_support_file</span><span class="syntaxkeyword">(</span><span class="syntaxstring">"Plugins"</span><span class="syntaxkeyword">)<br /></span><span class="syntaxdefault">        imgdir </span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> File</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">join</span><span class="syntaxkeyword">(</span><span class="syntaxdefault">plugins</span><span class="syntaxkeyword">,</span><span class="syntaxdefault"> </span><span class="syntaxstring">"Booleanhelper"</span><span class="syntaxkeyword">)<br /><br /></span><span class="syntaxdefault">        $cmdbooleanhelperscale </span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> UI</span><span class="syntaxkeyword">;;</span><span class="syntaxdefault">Command</span><span class="syntaxkeyword">.new(</span><span class="syntaxstring">"Scale down"</span><span class="syntaxkeyword">)</span><span class="syntaxdefault"> </span><span class="syntaxkeyword">{</span><span class="syntaxdefault">Bhelper</span><span class="syntaxkeyword">;;</span><span class="syntaxdefault">Kleiner</span><span class="syntaxkeyword">.new()</span><span class="syntaxdefault"> </span><span class="syntaxkeyword">}<br /></span><span class="syntaxdefault">    $cmdbooleanhelperscale</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">small_icon </span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> File</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">join</span><span class="syntaxkeyword">(</span><span class="syntaxdefault">imgdir</span><span class="syntaxkeyword">,</span><span class="syntaxdefault"> </span><span class="syntaxstring">"smaller.png"</span><span class="syntaxkeyword">)<br /></span><span class="syntaxdefault">        $cmdbooleanhelperscale</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">large_icon </span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> File</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">join</span><span class="syntaxkeyword">(</span><span class="syntaxdefault">imgdir</span><span class="syntaxkeyword">,</span><span class="syntaxdefault"> </span><span class="syntaxstring">"smallerL.png"</span><span class="syntaxkeyword">)<br /></span><span class="syntaxdefault">    <br />        <br /><br />        new_menu</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">add_item</span><span class="syntaxkeyword">(</span><span class="syntaxdefault">$cmdbooleanhelperscale</span><span class="syntaxkeyword">)<br /></span><span class="syntaxdefault">        new_toolbar</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">add_item</span><span class="syntaxkeyword">(</span><span class="syntaxdefault">$cmdbooleanhelperscale</span><span class="syntaxkeyword">)<br /></span><span class="syntaxdefault">        <br />    $cmdbooleanhelperscale1</span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> UI</span><span class="syntaxkeyword">;;</span><span class="syntaxdefault">Command</span><span class="syntaxkeyword">.new(</span><span class="syntaxstring">"Scale up"</span><span class="syntaxkeyword">)</span><span class="syntaxdefault"> </span><span class="syntaxkeyword">{</span><span class="syntaxdefault">Bhelper</span><span class="syntaxkeyword">;;</span><span class="syntaxdefault">Groter</span><span class="syntaxkeyword">.new()</span><span class="syntaxdefault"> </span><span class="syntaxkeyword">}<br /></span><span class="syntaxdefault">    $cmdbooleanhelperscale1</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">small_icon </span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> File</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">join</span><span class="syntaxkeyword">(</span><span class="syntaxdefault">imgdir</span><span class="syntaxkeyword">,</span><span class="syntaxdefault"> </span><span class="syntaxstring">"bigger.png"</span><span class="syntaxkeyword">)<br /></span><span class="syntaxdefault">        $cmdbooleanhelperscale1</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">large_icon </span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> File</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">join</span><span class="syntaxkeyword">(</span><span class="syntaxdefault">imgdir</span><span class="syntaxkeyword">,</span><span class="syntaxdefault"> </span><span class="syntaxstring">"biggerL.png"</span><span class="syntaxkeyword">)<br /></span><span class="syntaxdefault">    <br /><br /><br />        new_menu</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">add_item</span><span class="syntaxkeyword">(</span><span class="syntaxdefault">$cmdbooleanhelperscale1</span><span class="syntaxkeyword">)<br /></span><span class="syntaxdefault">        new_toolbar</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">add_item</span><span class="syntaxkeyword">(</span><span class="syntaxdefault">$cmdbooleanhelperscale1</span><span class="syntaxkeyword">)<br /></span><span class="syntaxdefault">    <br />    cmd </span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> UI</span><span class="syntaxkeyword">;;</span><span class="syntaxdefault">Command</span><span class="syntaxkeyword">.new(</span><span class="syntaxstring">"set scale factor"</span><span class="syntaxkeyword">)</span><span class="syntaxdefault"> </span><span class="syntaxkeyword">{</span><span class="syntaxdefault">Bhelper</span><span class="syntaxkeyword">;;</span><span class="syntaxdefault">Getinfo</span><span class="syntaxkeyword">.new()}<br /></span><span class="syntaxdefault">    <br />        new_menu</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">add_item</span><span class="syntaxkeyword">(</span><span class="syntaxdefault">cmd</span><span class="syntaxkeyword">)<br /></span><span class="syntaxdefault">        new_toolbar</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">show<br /><br />        $booleanhelper_menu_loaded </span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> true<br />end <br /><br />end </span><span class="syntaxcomment">#module &nbsp;</span><span class="syntaxdefault"></span>

TIG

Your $cmdbooleanhelperscale.tooltip = ("Scalefactor#{@@sf}") does work IF you change the scale-factor... so set it to work at initialization...
To get the tooltips working from initialization you must set the tooltip in each of the buttons' initialization code; after the @@sf has be established.
Incidentally this is a clever way of having a changing tooltip... where bit you glean it from? Or was it of your own devising??

A few more observations - some very minor:-

For $cmdbooleanhelperscale1 a 1.0/ version - $cmdbooleanhelperscale1.tooltip = "Scalefactor #{1.0/@@sf}" as it'd make it clearer which is increasing and which is decreasing.

Set $cmdbooleanhelperscale.tooltip = ("Scalefactor#{@@sf}") with a space between the text and 'number' like "Scalefactor #{@@sf}".

Wouldn't it be good to re-zoom after you scale stuff? To do this add Sketchup.send_action("viewZoomExtents:") to your methods, immediately after the scaling has been done.

'Capitalize' or 'Title-Case' the menu item text where you set the scale factor.