| 摘要 |
<p>PURPOSE:To input coordinates of positions of a figure drawn on a rough original on interactive basis by regarding points at four corners of the original selectively as an origin, and displaying coordinates on the basis of a lateral and a longitudinal axis extending positively from each point. CONSTITUTION:Points A, B, C, and D at four corners of the original OS is regarded selectively as the origin, and the X axis and Y axis are set along segments l1-l4 from the respective points in positive directions as shown by arrows; and coordinates in this selective coordinate system (display coordinate system) are displayed on a display device. Consequently, numerals indicating positions of the figure drawn on the original OS are utilized by an operator on interactive basis to input the coordinates, which are converted into coordinates in a coordinate system (output coordinate system) based upon one specific point as the origin and then outputted.</p> |
