| 摘要 |
PROBLEM TO BE SOLVED: To provide a picture generator and an information storage medium which express natural motions of characters while controlling complicated motions of characters. SOLUTION: When a right foot 22 of a character 20 is grounded on a game field face 18, the motion of the character is reproduced while limiting movement of the right foot 22 in the game field face 18. When the right foot 22 is grounded on the face 18, the motion of the character is so deformed that movement of the right foot 22 in the game field face 18 may be limited, and motion interpolation to approximate the deformed motion of the character to a reference motion is performed while the right foot 22 is not grounded. In the grounding mode, the foot is fixed to the grounding position, and the position of a knee of character is obtained by inverse kinematics. Coordinates of the knee in a local coordinate system to those in a world coordinate system by a conversion matrix obtained based on the Y roll angle and the Z roll angle, by which the vector connecting the root of the leg and the foot is directed toward the X axis of the world coordinate system, and the X roll angle in motion data. |
