Patent ID: 7995063

Claim:
A figure rendering-apparatus comprising: a figure displaying section to display a figure by rendering the figure on a display screen; a moving point setting section to set an arbitrary point on a rendering figure as a moving point based on a user's operation; a moving point moving range setting section to set a moving range of the moving point based on a user's operation; a locus point setting section to set an arbitrary point on the rendering figure as a locus point based on a user's operation; a moving point position information obtaining section to obtain a plurality of pieces of position information of the moving point when the moving point moves in the moving range; a locus position information obtaining section to obtain a plurality of pieces of position information based on the plurality of pieces of position information of the moving point obtained by the moving point position information obtaining section; and a locus information display control section to display information of one of predetermined functional formulae on the display screen when the plurality of pieces of position information obtained by the locus position information obtaining section fit one of the predetermined functional formulae, and to display information indicating that the plurality of pieces of position information do not fit any of the predetermined functional formulae, on the display screen, when the plurality of pieces of position information do not fit any of the predetermined functional formulae.