| 摘要 |
PURPOSE:To hatch the whole of an internal part even when other graphic exists in the internal part of a triangle by selecting a peak point and a reference border line, and calculating and hatching two pairs of the border points on the basis of the selected line. CONSTITUTION:A data processing device is composed of a processor 7, a graphic data memory 8 to store graphic data such as peak point coordinate data, a graphic processing part 9 to develop the graphic to a bit memory 11, a displaying part 10 to scan, read display a bit map memory 11, a bit map memory 11, a hatching processing part 12, etc. The hatching processing part 12 selects the peak point and the reference border line and calculates and hatches two pairs of the border point on the basis of it. |
