Hey!

I started to get some experience in multithreading in ruby. It's very interesting!

Problems, which I want to solve with MT is: Cross THE line A face....

so I have lots of faces (lets say 16) and I have 4 CPUs - so I decided "by hand" that every CPU gets 4 faces to check.
But I want to write a queue for the thread - I think this should be a better performance.

With the help of google I found for example this page: http://www.ruby-doc.org/stdlib-1.9.3/libdoc/thread/rdoc/Queue.html#method-i-pop

But there is written: require 'thread' => but I haven't this file and I can find it nowhere

Do you have any experience to use queues in Ruby?

Thanks again for your help!

@dan rathbun said:

In the index for [Code Snippets] by Subject there is this entry:

Copy selection to new group?

absolutely perfect! That's it!

Thanks a lot!

Just for other interested people:

model = Sketchup.active_model
selection = model.selection.to_a
	
group = model.active_entities.add_group(selection)
group.name = "result"

I want to automate following event with a script:

I group the selected entities, right click: "Elementinformation" and enter a name like "result"...

So, that's what I already have:

model = Sketchup.active_model
selection = model.selection # all the selected entities

Now I want to add a group, give them a name and add "selection" to the group:

group = model.add_group
group.name = "result"
group.entities. ... (?)

How can I add the "selection" to that group? It tried a lot, but without success

Do you have a tip what can I do?

Thanks a lot for your help!

This forum is amazing!

I learn a lot from you! Thanks a lot for all these information!

oh thank you very much!

I saw the function "inject", but I ignored them because I thought, that's not interesting for me.

Just for the sake of completeness: One have to add a "Geom::" in the front of "BoundingBox.new"

Thanks a lot again for your help!

br

Hi!

I have lots of 3D points: points = [[1, 2, 3], [2, 3, 5], ...]

Is there a easy way to get for example the minimum z value of all these points in Ruby?

At the moment I have a points.each loop and compare every z value with the last one....

Thanks for your help!

@thomthom said:

Hang on....

I think I might see what causes what you describe... you're not obtaining global coordinates at all. You're just looking at the local coordinates. You need to apply the transformation of the parent entities to the Point3d object.

When you then change the geometry in your group, you then offset it bounding box, affecting the coordinates. (If I understand this all right)

global_position = vertex.position.transform( parent_transformations )

Uhh jeah - I think that's the point I looked for! I didn't know that I can transform the position it self - but that's exactly that I want!

Thanks a lot!

And thanks for all your tips for optimizations!

@thomthom said:

There is nothing that guaranties that the entities and vertices will be returned in the same order after the model has been modified.

Yes, you're right and I know that - I just compared the minimum of (for example) y values.... at the beginning it should be 0 for some verticies. I pull a face and then the minimum of y is (for example) -10.

@thomthom said:

btw, on a side note - .typename is a terrible performance killer. For more information: http://www.thomthom.net/thoughts/2011/12/never-ever-use-typename/

Oh, thanks a lot! I didn't know that! That's a great info! I will adjust my code.

@thomthom said:

Hard to tell what is going on here without seeing any code.

But you are aware that then you open a group of component its coordinated are transformed into world coordinates automatically by SU?

Okay, sorry, here more explanations with code:

model = Sketchup.active_model
groups = model.entities
result = groups[0]

UI.messagebox result.transformation

entities = result.entities
face = Array.new
		
# read all faces
i=0
entities.each do |tmp|
if tmp.typename == "Face"
	if tmp.normal[2] != 0
		face[i]=Face.new(tmp)
		i+=1
	end
end
end

And the class for faces:

class Face
	def initialize(face)
		
		vertices = face.vertices
		
UI.messagebox vertices[0].position
	end
end

Now I start the code... everything is okay....
then I pull a face manually in Sketchup and start the code again... every verticies has a different NOT GLOBAL position.

I hope I could help you to understand my problem

Thanks a lot for your help!

Hi!

I have a problem with the global vertex positions....

Initial situation:

• a group with different faces inside
• to get the global positions of the single verticies: group.transformation + vertex.position

up till now: everything is fine...

now I pull a face - the group gets larger - group.transformation changes.... AND the moved verticies get a NEGATIV value.

Is there an easy possibility to "rearrange" the verticies? If not, I have to go over all verticies - get the smallest value and rearrange each value.

Thanks a lot for your help!