Information processing apparatus and computer-readable storage medium

A computer-readable storage medium having a program recorded thereon for providing a computer with functions including:

• connection means for proving connection to a haptic sense presentation device;
• virtual mass determination means for calculating an area of an image object based on a feature of the image object and determining the calculated area of the image object as a virtual mass of the image object;
• acceleration calculation means for calculating an acceleration of the image object based on current and previous features of the image object;
• presentation force calculation means for calculating a force to be presented to the haptic sense presentation device connected to said connection means based on the virtual mass determined by said virtual mass determination means and the acceleration calculated by said acceleration calculation means;
• and
• output means for outputting a signal indicative of the force calculated by said presentation force calculation means to the haptic sense presentation device.