| 摘要 |
PURPOSE:To produce a stereoscopic drawing as if there were a rhmbically cross-ruled paper by setting the running track angle of a cursor by an input device and then freely moving forward or backward the cursor positioned at the start point set on a screen at a set track angle and by a moved variable set previously or a moved variable inputted by the input device. CONSTITUTION:In an X-Y coordinate system, a mouse cursor is switched over to a cruciform cursor by the operation of a space key of a keyboard and the cruciform cursor is made to freely move forward or backward on four types of running tracks, that is, a horizontal track having a track angle corresponding to a mere X axis (0 deg.) set in the horizontal direction, a vertical track having a track angle corresponding to a mere Y axis (90 deg.) set in the vertical direction in the X-Y coordinate system primarily used for plotting a usual two-dimensional drawing, an isometrical X axis track having a track angle corresponding to an isometrical X axis used in the plotting state of an isometrical drawing, and an isometrical Y axis track having a track angle corresponding to an isometrical Y axis respectively. |
