Rotating Component so long dim is on red axis

[ktkoh]

I have code to tell me which axis the max bounds dim is on and now I would like to rotate the component so the largest dim is on the red axis. I need help with the translation statement to make the proper rotation.

model = Sketchup.active_model
entities = model.entities
ss= model.selection
entity = ss.first
selection_bb = entity.bounds
max_dir = "blue axis"
if selection_bb.height > selection_bb.depth
    max_dir = "green axis"
    if selection_bb.width > selection_bb.height then max_dir = "red axis"  end
else
    if selection_bb.width > selection_bb.depth then max_dir = "red axis" end
end

UI.messagebox("Max Dir = " + max_dir)

Thanks
Keith

[sdmitch]

One possibility

  model = Sketchup.active_model
  entities = model.entities
  ss= model.selection
  entity = ss.first
#=== save the current origin and transform back to created position ===
  origin = entity.transformation.origin
  trans=entity.transformation
  entity.transform! trans.inverse
#======================================================================
  selection_bb = entity.bounds
  max_dir = "blue axis";axis=Y_AXIS; # if blue, rotate around green
  if selection_bb.height > selection_bb.depth
      max_dir = "green axis";axis=Z_AXIS; # if green, rotate around blue
      if selection_bb.width > selection_bb.height 
        max_dir = "red axis" ;axis=nil; # if red, no rotation needed
      end
  elsif selection_bb.width > selection_bb.depth
        max_dir = "red axis";axis=nil; # if red, no rotation needed
  end
#=== Rotate as needed and move back to current location ===============
  if axis
    tr=Geom;;Transformation.rotation(entity.transformation.origin,axis,90.degrees)
    entity.transform! tr
  end
  tr=Geom;;Transformation.translation(origin)
  entity.transform! tr

[ktkoh]

Thanks for the code it worked just fine. I had finally found the piece I was missing and this is what I had come up with

model = Sketchup.active_model
entities = model.entities
ss= model.selection
entity = ss.first
selection_bb = entity.bounds
max_dir = "blue axis"
if selection_bb.height > selection_bb.depth
max_dir = "green axis"
if selection_bb.width > selection_bb.height then max_dir = "red axis"  end
else
if selection_bb.width > selection_bb.depth then max_dir = "red axis" end
end
case max_dir

when "blue axis"
tr = Geom;;Transformation.rotation [0,0,0], [0,1,0], 90.degrees
entities.transform_entities tr, entity

when "green axis"
tr = Geom;;Transformation.rotation [0,0,0], [0,0,1], 90.degrees
entities.transform_entities tr, entity

end

Similar and the results are both ok.