9
Active Edge Table Example (cont.)
3.1: (y = 9) Get edges from ET bucket
y (none in this case, y = 9 has no entry in ET)
Scan
line 9 shown in fig 3.28 below
3.2: Remove from the AET any entries
with ymax = y
(remove FA, EF)
3.3: Draw scan line between {DE,
CD}
3.4: y = y+1 = 10
3.5: Update x in {DE, CD}
3.1: (y = 10) (Scan line 10 shown in fig 3.28 below)
And so on
(FvDFH
pages 92, 99)
(FvDFH
pages 92, 99)
Current X
Slope
Y val