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公开(公告)号：JPH02250178A
公开(公告)日：1990-10-05
申请号：JP7044389
申请日：1989-03-24
Applicant: IBM JAPAN
Inventor： HIDAKA KAZUYOSHI
Abstract: PURPOSE:To set a segment at a desired angle to another segment on a picture by generating geometrical data closest to an indicated point on a boundary line and displaying the segment, which has a reference point and a determined point as the start point and the end point respectively, as an input candidate. CONSTITUTION:After a reference line and the reference point are obtained, geometrical data of the boundary line between angular areas on a CRT picture. Thereafter, a point Pm indicated by a pointing device is successively updated and defined each time when its coordinates are changed, and the point closest to the point Pm out of all points on the boundary line is denoted as Pd, and the point Pd is updated in accordance with the change of the point Pm, and one latest segment connecting the reference point and the point Pd is displayed on the CRT picture each time when the point Pd is updated. When a termination signal is given from the pointing device, the reference point and the point Pd at this time are determined as the start point and the end point respectively, and values of two-dimensional coordinates of two points are recorded, and the segment connecting these points is drawn on the CRT picture. Thus, the segment is drawn at a desired angle to an already drawn segment.
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2.发明专利
公开(公告)号：JPH07141141A
公开(公告)日：1995-06-02
申请号：JP28638793
申请日：1993-11-16
Applicant: IBM JAPAN
Inventor： HIDAKA KAZUYOSHI
Abstract: PURPOSE:To selectively execute one of plural processing for an object displayed on a display screen by the minimum number of operation steps using a mouse/ cursor. CONSTITUTION:When the 1st indication point of a multi-indication point cursor is positioned on an object and a mouse button is clicked, 1st processing, e.g. 'moving operation' for the object, is specified, and in response to the click of the mouse button after moving the cursor, the object on the original position is erased and the indicated object appears on a current cursor position. When the 2nd indication point of the cursor is positioned on the object and the mouse button is clicked, 2nd processing, e.g. 'copying operation' for the object, is specified, and in response to the click of the mouse button after moving the cursor, the indicated object appears on a current cursor position.
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