| 摘要 |
To enable a computer graphics system to produce lines of varying thickness, thereby adding depth cues, the lines are drawn as quadrilaterals from vertices information. Each end A or B of a line 82 to be drawn has a depth value assigned and this produces a corresponding line width value. This in turn produces a pair of quadrilateral vertices (84, 85 and 86, 87) whereby the complete line can be drawn as a quadrilateral. Antialiasing techniques are used for edges 90. <IMAGE> |
