| 摘要 |
PURPOSE:To make the contents of a document displayed on an opposite part to a moved end point unvariable by regarding an area based upon a centroid coordinates and area size as an area to be displayed after deformation and projecting the contents of a document on a part existing in the area to a deformed display area rectangular frame. CONSTITUTION:When the deformation of a display area is instructed by moving an optional end point in a rectangular frame, a difference between the centroid coordinates of the deformed display area and that of the undeformed display area is calculated, the centroid moving distance is converted into the centroid moving distance in the area to be displayed based on a coordinate conversion ratio and the centroid coordinates obtained by adding the converted centroid coordinates to the centroid coordinated in the undeformed displayed area is regarded as the centroid coordinates in the deformed displayed area. The vertical and horizontal sizes in the deformed display area are converted into the vertical and horizontal sizes in the displayed area based on the coordinate conversion ratio, an area determined by the centroid coordinates and the area size is regarded as the deformed displayed area and the contents of a document on a part existing in the area are deformed and then projected to the display area rectangular frame to redisplay the contents of the document. Consequently, the contents of the document displayed on the opposite part to the moved end point can be made unvariable.
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