| 摘要 |
PURPOSE:To perform heavy line drawing easily by registering coordinate data forming centers of heavy lines and width data of heavy lines in the segment buffer while reducing the volume of registered graphic information to the segment buffers of line segment information and line width information as the centers. CONSTITUTION:Coordinate data and line width data forming centers are provided the display processor 4 or the host computer 8 from the operator, and only the coordinate data and line width data are handled in heavy line information control and processing. For example, in the auxiliary memory device 9 and segment buffer 51, only the coordinate data and line width data are stored and registered as heavy line information. In heavy line drawing on the CRT monitor 3 by the heavy line information, after discriminating that the kind of line segment is heavy line by the processor 4, line segment information are automatically prepared by the coordinate data and line width data and bit development data for the frame buffer 6 are obtained. |
