class SolCal::Commands::HaAngleToZenithCommand
Protected Instance Methods
do_execute()
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# File lib/solcal/commands/ha_angle_to_zenith_command.rb, line 5 def do_execute a = Math.cos(Angle.from_deg(angle_from_zenith).to_rad) b = Math.cos(latitude.to_rad)*Math.cos(declination.to_rad) c = Math.tan(latitude.to_rad)*Math.tan(declination.to_rad) d = a/b-c return nil unless d >= 0 and d<=1 Angle.from_rad(Math.acos(d)) end