class ShadowImages

def initialize
　　model = Sketchup.active_model
　　shadowinfo = model.shadow_info

　　prompts = ["Year", "Month", "Day", "StartTime", "EndTime", "Interval(min)"]
　　values = [Time.now.year, Time.now.month, Time.now.day, 8, 16, 60]
　　results = inputbox prompts, values, "ShadowImages"

　　return if not results

　　cyear = results[0]
　　cmonth = results[1]
　　cday = results[2]
　　stime = results[3]
　　etime = results[4]
　　interval = results[5]

　　path = ENV["USERPROFILE"] + "\\My Documents\\ShadowImages_"
　　t = stime.prec_f

　　while t <= etime.prec_f
　　　　chour = t.truncate
　　　　cmin = ((t - chour) * 60).truncate
　　　　# csec = (((t - chour) * 60 - cmin) * 60).round
　　　　csec = 0.0

　　　　ctime = Time.gm cyear, cmonth, cday, chour, cmin, csec
　　　　shadowinfo["ShadowTime"] = ctime

　　　　Sketchup.set_status_text "Current Time: " + ctime.to_s
　　　　# UI.messagebox "Current Time: " + ctime.to_s

　　　　fname = sprintf("%02d", chour) + sprintf("%02d", cmin) + ".jpg"
　　　　view = model.active_view
　　　　view.write_image path + fname
　　　　# view.write_image filename, <width>, <height>, <antialias>, <compressionFactor>

　　　　t += interval.prec_f / 60
　　end

　　UI.messagebox "Finish!"

end

end

if (not file_loaded?("ShadowImages.rb"))
　　add_separator_to_menu("Tools")
　　UI.menu("Tools").add_item("ShadowImages") { ShadowImages.new }
end

file_loaded("ShadowImages.rb")