| 摘要 |
<p>PURPOSE:To simplify the processing of investigating the way of overlapping and to improve speed for completing drawing all the windows. CONSTITUTION:In an overlapping way pattern check processing (step 1), an X-direction range check and a Y-direction range check are executed according to the upper left and lower right coordinates at the positions of a high-order window and a low-order window and in pattern discrimination (step 2), the results of the X-direction range check and the Y-direction range check are discriminated as 16 patterns. In the rectangle division processing of the respective patterns 1-16 (step 3 in the case of the rectangle division processing for the pattern 1, step 4 in the case of the pattern 2, step 5 in the case of the pattern 15 and step 6 in the case of the pattern 16), the part of observing the low-order window is divided into rectangles according to the respective ways of overlapping. Finally in a rectangle display processing (step 7), the divided rectangles are displayed.</p> |
