a little bit more information: Standard DC definition attributes (dynamic_attributes): Retrieve with (for the selected instance): xx=Sketchup.active_model.selection[0].definition.attribute_dictionaries['dynamic_attributes'] xx.each{|key,value| puts key.to_s+'-'+value.to_s} Returns (app. depending on user set attributes of the selected instance-in this case LenX and LenY are 'user cannot see' and material is 'user can see'): _formatversion-1.0 _has_movetool_behaviors-0.0 _hasbehaviors-1.0 _lastmodified-2012-02-21 10:13 _lengthunits-CENTIMETERS _lenx_access-NONE _lenx_formlabel-LenX _lenx_label-LenX _lenx_units-DEFAULT _leny_access-NONE _leny_formlabel-LenY _leny_label-LenY _leny_units-DEFAULT _material_access-VIEW _material_formlabel-Material _material_label-Material _material_units-STRING _name-Huis1 lenx-393.700787401575 leny-393.700787401575 material- When changing LenX and LenY to 'user can see': _formatversion-1.0 _has_movetool_behaviors-0.0 _hasbehaviors-1.0 _lastmodified-2012-02-21 10:15 _lengthunits-CENTIMETERS _lenx_access-VIEW _lenx_formlabel-LenX _lenx_label-LenX _lenx_units-DEFAULT _leny_access-VIEW _leny_formlabel-LenY _leny_label-LenY _leny_units-DEFAULT _material_access-VIEW _material_formlabel-Material _material_label-Material _material_units-STRING _name-Huis1 lenx-393.700787401575 leny-393.700787401575 material- Standard instance attributes (dynamic_attributes): xx=Sketchup.active_model.selection[0].attribute_dictionaries['dynamic_attributes'] xx.each{|key,value| puts key.to_s+'-'+value.to_s} _has_movetool_behaviors-0.0 _hasbehaviors-1.0 lenx-393.700787401575 leny-393.700787401575 Now if you add an attribute on definition level eg. LenX this is accessible as lenx for both the comp. definition as the instance. Important: to be able to access that value on instance level with _lenx_formula (eg. to change the value) the attribute must be set to at least 'users can see this attribute' . Otherwise it cannot be changed through ruby. If I get out more information, I'll post it here.

I also wish to draw GL bitmap. Haven't found a way. @dan rathbun said: but when the tool deactivates they vanish. That I don't think you can do anything with...

@dan rathbun said: @driven said: What you can't do via 'SU as Server' is Download or Upload local content. [that's what broke set_html if html = local_file.img] Is this local content still broken on Safari ?? Yes.

@dan rathbun said: So... what happens if you wrap the very long string inside =begin =end The same, .rbs fails. Thank you Dan for your advice. Really I don't look for a solution. I only want to advert others about this. It's difficult to debug this error. Yesterday I scrambled the code but it didn't work. It was difficult to find out why. After a long time I discovered that by mistake I put a comment too long in same line and that was the reason.

@unknownuser said: @Dan: thanks for the info. 11752 builds is not bad for a single version 8.0 (~33 years at 1 build per day!) WHAT !! ... where do you get 33 years from ?? The 8.0 development cycle from start to 8.0.M2 release is no more than 701 DAYS ! ... and there are at least 24 more language builds above 11752, so make it 11776 total ... That's at least 16 (almost 17 builds per day.) Subtract 100 Sundays. And it's more like 11776 / 601 = at least 19 builds per day, if they worked 6 days a week.

@tig said: Isn't it pointless to worry about this infinity-ness, provided that they 'appear' infinitely long ? Yes, that is what I try to do. Draw a line that appear to be infinite - that i ends in the SU horizon. Like the protractor tool does when you rotate. Or like an Guide Line does. I was thinking that if you could calculate where the projection meet, you could then use that as a measurement of how long the line should be, provided you could work out what the screen point represented in world coordinates.

@thomthom said: @dan rathbun said: Hmm ... I see rescue modifiers do not work with require(), for some reason ? What you mean? What modifiers? The conditional keywords if and unless can be used in block position: [ if| unless] ( expression) statements end or modifier position: statement [ if| unless] ( expression) **rescue** can also be used in modifier poistion, but ... my attempt at this: require('booboo.rb') rescue nil ... does NOT trap the LoadError (because LoadError < ScriptError < Exception, and rescue only traps RuntimeError and subclasses by default.) For a one-liner, we must use semi-colons: begin require('booboo.rb'); rescue Exception; nil; end

@anton_s said: Is there a way to change sketchup::text font and size through some code? Not per entity - it is a model setting. From the UI you change it from Model Info > Text Not sure if it is exposed via the API...

That's what was happening here, the block bit, until I put it in it's own thread. @bht= Thread.new { Thread.current["name"] = "BHT"; system("bht_su"); Thread.exit} john

Thank you gentlemen: much appreciated, and I promise not to do math past my bedtime again. (Unless I forget!)

Keith.. updated the template example. Moved the definition of WIN and MAC constants up to the Object level. I had an inline comment, that said they'd be inherited by all nested namespaces. They would not have been. I've been working with mixin modules and subclasses lately, and got some braincells crossed. We've asked Google to define these when Sketchup starts but they have not, as yet.

You must uncheck "Use default value" first ... ADD: OR.. you can hilight "[Default]" at the top of the list, and change the default to what you want most of your code to do with TAB characters. Then change the specific few languages that you want to be different (ie: Python, Javascript, Java, HTML and CSS, all use 4 space tabs, instead of 2. Likely all the C language family as well. C, C++ and C#.)

What Every Programmer Should Know About Floating-Point Arithmetic A.K.A. "Why don’t my numbers add up?"

Thanks John... seemed to paste OK into Notepad. I saved as UNIX EOLs, and "UTF-8 without BOM". Will try it tomarrow.

I did put it in Ruby red to stress it was somehow 'special' without going into the added confusion of 'classes' - with an example to explain it too... OK it maybe ought to have a 'capital-letter', but we all say float not **F**loat quite a lot too without much of an issue ! But no dander is up [yet]...

Sorry, I don't quite understand your point... The tool initializes, it runs self.draw_pulley(), which runs self.dialog() and tests for the validity of its ' return'. If the user cancels the dialog ' nil' is returned and it stops. If the user enters valid inputs it returns ' true' and the remaining steps are executed to completion. If the user enters invalid input it then re-runs self.draw_pulley() [], which in turn runs self.dialog() and tests for its validity in its ' return' etc etc in a loop until either the user cancels or enters valid input... [ after it re-calls the method it immediately returns ' nil' to the previously executing version of the method, so that one goes no further] Note how two sets of references are taken from the ' results', one to test their validity and if OK then another @ set to be used in the next methods and also remembered for the next time... I left it this way because that's what you originally showed... personally I feel that a simple UI.messagebox("Values outside limits !\nExiting.") return nil would do, but at least this way the user does get chances to try again with a valid input in a new dialog - if they want to give up they can just cancel the dialog at any time...

@driven said: I'll make some nicer ones if you want, this was my first attempt at making icons in SU... john A note about toolbar icons. GIFs are not the best. (They are good for print ads, cartoons, etc.) But the edges look ragged. You should save as PNG, as the edges are anti-aliased. (smoothed via blending.)

Fixed a small booboo (see the docheader in file.) @John.. perhaps a good example tool, to make a path, might be a modified edition of the "Examples/linetool.rb"

@unknownuser said: Thank you, this is exactly what I was looking for! It is really weird. I have checked all observers, but didn't remember this method hidden in SketchUp::Pages! Yup.. it is overlooked because is does not have a protoclass defined, nor it's own page in the API reference.

So as I thought I had explained... make a transformation [tb] for 'base' and use it just on that entity group.entities.transform_entities(tb, **base**) THEN make and use another transformation [t] on the whole 'group'... Also note that your approximations of PI etc could be replaced by 60.degrees or other values in degrees, to give consistently accurate angles...