| 摘要 |
<p>PURPOSE:To easily process hidden lines even to any graphic. CONSTITUTION:When a graphic 31 is defined as an upside graphic arranged on the upper side, the graphic (upside graphic) 31 is designated (clicked) by a mouse. Next, the graphic 31 is surrounded along the outline by a rectangular window, and the recognizing sub step of an erasing graphic is started. In this step, erasing graphic data are stored in an area buff (the part to be erased is recognized) and afterwards, the erasing graphic data stored in the area BUff are erased from a drawing. Then, the processing is finished.</p> |
