Disclosed are apparatus and methods for executing software applications with an actual environment. An output of each light detector is read, through scanning by the horizontal scan circuit, to the signal line from left to right in order, during a horizontal scan period which is sufficiently short such that slit light of a light-sectioning method can be assumed to be substantially stationary. The refrigerant circuit is configured to cool at least one second thermal load. An electrical power target is calculated based on the calculated engine power final target.