Importance

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Abstract

A drawing system includes a pointing device, a control unit and a drawing unit drawing a line of trajectory of the cursor and including a straight line input assisting unit. The assisting unit includes a start point recognizing unit, an end point determination unit and a coordinate aligning unit. The start point recognizing unit recognizes as a start point an initial coordinate having an input position designated by the coordinate input unit. The end point determination unit determines as an end point a last coordinate having an input position designated by the coordinate input unit. The coordinate aligning unit aligns the coordinates of the primary coordinate group on a single line connecting between the start and end points thereby to form a secondary coordinate group. When a line is drawn based on the primary coordinate group, the line is corrected to a straight line based on the secondary coordinate group.

First Claim