require 'sketchup.rb'
# objective: to make a cylinder(s) and or Elbows
# oriented about X,Y & Z axies  
# can be used with Dome.rb by Frank Wiesner to cap ends if so desired
#--------------------------------------------------------------------------
def create_cylinder 

    # The global variables below will allow SU to remember your previous settings
    $r = 30.cm if not $r
    $h = 150.cm if not $h
    $n = 24 if not $n
    @cyl_orientation = "along Z axis" if not @cyl_orientation 
    
    # Dialog Box construction
    cyl_orientation = ["along X axis","along Y axis","along Z axis"]
    enums = [cyl_orientation.join("|")]
    prompts = ["Orientation", "Radius", "Height", "No. of segments " ]
    values = [@cyl_orientation, $r, $h, $n]
    results = inputbox prompts, values, enums, "Cylinder Properties"
    return if not results
    cyl_orientation, $r, $h, $n = results
#--------------------------------------------------------------------------
    model = Sketchup.active_model
    model.start_operation "Create Cylinder"
    entities = model.active_entities
    group = entities.add_group
    entities = group.entities
#--------------------------------------------------------------------------  
   if( results[0] == "along X axis" )
    circle = entities.add_circle([0,0,0], X_AXIS, $r, $n)
    base = entities.add_face(circle)
    base.pushpull -$h
   end
#--------------------------------------------------------------------------
   if( results[0] == "along Y axis" )
    circle = entities.add_circle([0,0,0], Y_AXIS, $r, $n)
    base = entities.add_face(circle)
    base.pushpull -$h
   end
#--------------------------------------------------------------------------
   if( results[0] == "along Z axis" )
    circle = entities.add_circle([0,0,0], Z_AXIS, $r, $n)
    base = entities.add_face(circle)
    base.pushpull -$h
   end
#--------------------------------------------------------------------------
    model.commit_operation
end
#--------------------------------------------------------------------------
if( not file_loaded?("cylinder.rb") )
    add_separator_to_menu("Plugins")
    UI.menu("Plugins").add_item("Cylinder") { create_cylinder }
end
#--------------------------------------------------------------------------
file_loaded("cylinder.rb")