GRAPH DISPLAY CONTROL APPARATUS, GRAPH DISPLAY CONTROL METHOD AND NON-TRANSITORY STORAGE MEDIUM HAVING STORED THEREON GRAPH DISPLAY CONTROL PROGRAM

摘要

A graph display control apparatus includes a figure display control unit, a graph figure change unit, a coordinate value calculation unit and a figure prominent display control unit. The figure display control unit sets a coordinate system to a display unit and displays (i) a first graph figure and (ii) a coordinate axis or a second graph figure in the system. The graph figure change unit moves or transforms the first graph figure in the system in response to a user operation to change the first graph figure. The coordinate value calculation unit detects an intersection point of (i) the changed first graph figure and (ii) the coordinate axis or the second graph figure and calculates a coordinate value of the intersection point. The figure prominent display control unit prominently displays the changed first graph figure when the coordinate value is an integer.

主权项

1. A graph display control apparatus comprising:
a display unit; a figure display control unit which sets a coordinate system to the display unit and displays (i) a first graph figure and (ii) a coordinate axis or a second graph figure in the coordinate system on the display unit; a graph figure change unit which moves or transforms the first graph figure in the coordinate system in response to a user operation so as to change the first graph figure; a coordinate value calculation unit which detects an intersection point of (i) the changed first graph figure and (ii) the coordinate axis or the second graph figure as a coordinate calculation intersection point and calculates a coordinate value of the coordinate calculation intersection point; and a figure prominent display control unit which prominently displays the changed first graph figure on the display unit when the calculated coordinate value is an integer.