To express a natural swinging motion by an object pattern by displaying the object of a swinging object so that a supporting point many not be deviated, changing a magnification ratio or a reduction ratio in a direction and three-dimensionally expressing the swinging object.
An object A of a fin fixes the location of a supporting point B and the reduction ratios of left and right sides are changed. Namely, (a) shows that the object A of the fin of a character ROM is displayed by fixing the location of the supporting point B at the reduction ratio of 100%, and (b) shows that the object A of the fin is displayed by fixing the location of the supporting point B at the reduction ratio of 50%. Further, (c) shows that the object A of the fin is displayed by fixing the location of the supporting point B at the reduction ratio of 25%. Because a more natural movement can be made by delaying the change of the reduction ratios at the time of the maximum and minimum, it is desirable that the reduction ratios are changed in a sine wave shape.
KIKUCHI MASAMI
NAGAYAMA YUTAKA
