| 摘要 |
PURPOSE:To exactly execute the picture drawing of a graphic by inserting a horizontal side or deleting a specific X coordinate from an output table with respect to the output table before picture drawing is executed to a bit map memory. CONSTITUTION:The number of X coordinates in an output table being smaller than an X coordinate of a small or large horizontal side is counted, and when it is decided that its number is an even number, the X coordinate of a small horizontal side is inserted into the output table 3, but when it is decided that the counting value is an odd number, the X coordinate of the output table 3 remains unchanged. Also, X coordinate values in the output table being over the X coordinate of the small horizontal side, and also, under the X coordinate of the large horizontal side are all deleted. In such a manner, in accordance with the output table 3, picture drawing can be executed to a bit map memory 6, and accordingly, it does not occur that the horizontal side is missing due to the shape of a graphic and surface painting can be executed exactly. |
