Getting group's dimensions

[Sweek]

Hello,

I'm new here and I need help for my project. I try to get width, height and depth of my selected entities.
For example, this is my project's hierarchy:

model = Sketchup.active_model
selection = model.selection

selection.each do |entity| 
  UI.messagebox(entity.name)
  entity.entities.each do |sub_entity|
    UI.messagebox(sub_entity.name)
  end
end

With this code, if I select A, I get the group A, 1 and 2. Now I'd like to get each group's dimensions. I tried this:

model = Sketchup.active_model
selection = model.selection

selection.each do |entity|
  bb1 = Geom;;BoundingBox.new
  bb1.add(entity.bounds)  
  UI.messagebox("Name; #{entity.name}\nWidth; #{bb1.width}\nHeight; #{bb1.height}\nDepth; #{bb1.depth}")
  entity.entities.each do |sub_entity|
    bb2 = Geom;;BoundingBox.new
    bb2.add(sub_entity.bounds)  
    UI.messagebox("Name; #{sub_entity.name}\nWidth; #{bb2.width}\nHeight; #{bb2.height}\nDepth; #{bb2.depth}")
    bb2.clear
  end
  bb1.clear
end

If I select the A group I get the right values for A but not for its subgroups 1 and 2.
If I select the subgroup 1, I get the right values for the subgroup 1.

If you can explain me why I get this, or tell me how to get what i want. I would appreciate.

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[TIG]

Your code looks workmanlike.
When I create a set of nested groups as you propose I get the results I'd expect ??

What is 'wrong' with your results ?

[Sweek]

Thanks for your answer. I will try to explain.

I made this:
-group B size is 15126,
-group 3 size is 15123,
-group 4 size is 15123

If my selection is B like this:

I get this results (which are right only for group B):

As you can see, for group 3 and 4 the width is not correct.
But if my selection is 4 for example:

I get right results for group 4:

Usually, how do you get the size of all groups in a model ?

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[sdmitch]

Just how did you create 3 and 4 inside of B?

If I create 3 and 4, stack them, then group them to create B, your code works as expected.

[Sweek]

Hi,

Effectively, I tried as you said and it works.
I will ask my internship supervisor how he created his groups.

Do you know if people get group's dimension like I did or if they use another way ?

[sdmitch]

@sweek said:

Do you know if people get group's dimension like I did or if they use another way ?

Be aware that bounds dimensions of the container 'B' can and do change when rotated. The sub_groups, 3 and 4, are unaffected. Creating a new bounding box isn't necessary. It will be the same as the entities bounds. Use .local_bounds for the container, which gives you the initial dimensions, then use the x,y and z scales from the transformation to give you the current size.

model = Sketchup.active_model
selection = model.selection

selection.each do |entity|
  bb1=entity.local_bounds; tr1=entity.transformation
  UI.messagebox("Name; #{entity.name}\nWidth; #{bb1.width*tr1.xscale}\nHeight; #{bb1.height*tr1.yscale}\nDepth; #{bb1.depth*tr1.zscale}")
  entity.entities.each do |sub_entity|
    bb2=sub_entity.bounds
    UI.messagebox("Name; #{sub_entity.name}\nWidth; #{bb2.width}\nHeight; #{bb2.height}\nDepth; #{bb2.depth}")
  end
end

[Sweek]

Thank you, I will work on this.